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Sample records for aus landwirtschaftlicher biomasse

  1. Progress in biogas II - Biogas production from agricultural biomass and organic residues. Pt. 1. Proceedings; Progress in Biogas II - Biogasproduktion aus landwirtschaftlicher Biomasse und organischen Reststoffen. T. 1. Tagungsband

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-08-12

    Within the International Congress at the University of Hohenheim (Stuttgart, Federal Republic of Germany) from 29th March to 1st April, 2011, the following lectures were held: (1) Biogas in Europe (F. Scholwin); (2) Biogas development in China: International Cooperation to up-scale the technology (Z. Li); (3) The methane to markets initiative and opportunities for livestock manure digesters in the United states (C. Voell); (4) Biogas for sanitation in Africa - experiences from creating a sustainable market 2003 to 2010 (M. Lebofa); (5) Are biogas plants in Baden-Wuerttemberg efficient? (M. Stanull); (6) The Estonian theoretical and practical biogas production potential and economically feasible feed-in-tariff for renewable electricity for micro CHP using biogas (A. Oja); (7) Biomass potentials for biogas utilization and the effects on sustainability in Kalugo (P. Fiedler); (8) An Integrated Energy System applied to Milking Dairy Cows (I. Bywater); (9) WINUBIO-Alternative technology to improve Austria's biogas capacity (V. Steinmueller); (10) Interdisciplinary approaches to advances in sustainable biogas production in Europe (S. Kusch); (11) Problems encountered in disseminating biogas technology in Uganda (G. Mabudo); (12) reasons to the success to biogas program in Nepal (K. Dawadi); (13) Effects of increasing biomass production for energetic utilization on soil fertility in the German Federal State on Brandenburg (J. Zimmer); (14) Biogas plants as part of sustainable development within peasant family farms in Germany - Interim results of an empirical field study (A. Bischoff); (15) Life cycle assessment of heat and power generation in biogas fed combined heat and power plants under German conditions (J. Lansche); (16) Biogas from lignocellulosic biomass: interest of pretreatments (H. Carrere); (17) Effect of physical and thermal pre-treatments on biogas yield of some agricultural by-products (P. Balsari); (18) Extrusion pre-treatment of green waste for

  2. Progress in biogas II - Biogas production from agricultural biomass and organic residues. Pt. 1. Proceedings; Progress in Biogas II - Biogasproduktion aus landwirtschaftlicher Biomasse und organischen Reststoffen. T. 1. Tagungsband

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-08-12

    Within the International Congress at the University of Hohenheim (Stuttgart, Federal Republic of Germany) from 29th March to 1st April, 2011, the following lectures were held: (1) Biogas in Europe (F. Scholwin); (2) Biogas development in China: International Cooperation to up-scale the technology (Z. Li); (3) The methane to markets initiative and opportunities for livestock manure digesters in the United states (C. Voell); (4) Biogas for sanitation in Africa - experiences from creating a sustainable market 2003 to 2010 (M. Lebofa); (5) Are biogas plants in Baden-Wuerttemberg efficient? (M. Stanull); (6) The Estonian theoretical and practical biogas production potential and economically feasible feed-in-tariff for renewable electricity for micro CHP using biogas (A. Oja); (7) Biomass potentials for biogas utilization and the effects on sustainability in Kalugo (P. Fiedler); (8) An Integrated Energy System applied to Milking Dairy Cows (I. Bywater); (9) WINUBIO-Alternative technology to improve Austria's biogas capacity (V. Steinmueller); (10) Interdisciplinary approaches to advances in sustainable biogas production in Europe (S. Kusch); (11) Problems encountered in disseminating biogas technology in Uganda (G. Mabudo); (12) reasons to the success to biogas program in Nepal (K. Dawadi); (13) Effects of increasing biomass production for energetic utilization on soil fertility in the German Federal State on Brandenburg (J. Zimmer); (14) Biogas plants as part of sustainable development within peasant family farms in Germany - Interim results of an empirical field study (A. Bischoff); (15) Life cycle assessment of heat and power generation in biogas fed combined heat and power plants under German conditions (J. Lansche); (16) Biogas from lignocellulosic biomass: interest of pretreatments (H. Carrere); (17) Effect of physical and thermal pre-treatments on biogas yield of some agricultural by-products (P. Balsari); (18) Extrusion pre-treatment of green waste for

  3. Progress in biogas. Biogas production from agricultural biomass and organic residues. Pt. 1 and 2. Proceedings (oral presentations and poster presentations); Fortschritt beim Biogas. Biogas aus landwirtschaftlicher Biomasse and organischen Reststoffen. T. 1 und 2. Tagungsband. Vortraege and Poster

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    Within the International Conference ''Progress in Biogas - Biogas production from agricultural biomass and organic residues'' at the University Hohenheim (Stuttgart, Federal Republic of Germany) from 18th to 21st September, 2007, the following lectures were held: (1) Global relevance and potential of bioenergy for regional development; (2) Biogas electricity for France feed-in tariff and some other things to know before entering French market; (3) Policy drivers and future prospects for on-farm anaerobic digestion in Northern Ireland; (4) Biogas in Belgium, a swot analysis; (5) Status and prospects of biogas energy use in Ukraine; (6) Recent developments in Chinese agricultural biogas production; (7) Opportunities for agricultural based biogas systems in the province of Ontario, Canada; (8) Pre-treatment and digestion of separated collected household waste in Sweden; (9) To the problem of monitoring measures and prophylaxis measures with the utilization of organic residual substances in biological gas facilities from hygienic view; (10) Fermenting residues from biological gas facilities - nutrients and pollutants, possibilities of application in the agriculture; (11) Treatment and utilization of fermentation residues; (12) Potential of residual gas of NaWaRo feeded biogas plants in Baden-Wuerttemberg; (13) Operating analytics of biogas plants to improve efficiency and to ensure process stability; (14) The potential of biogas and electric power production from subproducts in the sugar and alcohol industries by the application of anaerobic digestion; (15) Co-digestion plant in dairy cattle farm in Emilia Romagna region (Italy); (16) Facing operational problems in a biodigeser in Yuvientsa - Amazonian Region of Ecuador; (17) Biogas plant instead of milk cow - payment and occupation with the use of grassilage; (18) Biogas in ecologic agriculture - experiences from 3 years of fermentation of grass-clover ley; (19) Combined solar-biogas basis for the

  4. Progress in biogas. Biogas production from agricultural biomass and organic residues. Pt. 1 and 2. Proceedings (oral presentations and poster presentations); Fortschritt beim Biogas. Biogas aus landwirtschaftlicher Biomasse and organischen Reststoffen. T. 1 und 2. Tagungsband. Vortraege and Poster

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    Within the International Conference ''Progress in Biogas - Biogas production from agricultural biomass and organic residues'' at the University Hohenheim (Stuttgart, Federal Republic of Germany) from 18th to 21st September, 2007, the following lectures were held: (1) Global relevance and potential of bioenergy for regional development; (2) Biogas electricity for France feed-in tariff and some other things to know before entering French market; (3) Policy drivers and future prospects for on-farm anaerobic digestion in Northern Ireland; (4) Biogas in Belgium, a swot analysis; (5) Status and prospects of biogas energy use in Ukraine; (6) Recent developments in Chinese agricultural biogas production; (7) Opportunities for agricultural based biogas systems in the province of Ontario, Canada; (8) Pre-treatment and digestion of separated collected household waste in Sweden; (9) To the problem of monitoring measures and prophylaxis measures with the utilization of organic residual substances in biological gas facilities from hygienic view; (10) Fermenting residues from biological gas facilities - nutrients and pollutants, possibilities of application in the agriculture; (11) Treatment and utilization of fermentation residues; (12) Potential of residual gas of NaWaRo feeded biogas plants in Baden-Wuerttemberg; (13) Operating analytics of biogas plants to improve efficiency and to ensure process stability; (14) The potential of biogas and electric power production from subproducts in the sugar and alcohol industries by the application of anaerobic digestion; (15) Co-digestion plant in dairy cattle farm in Emilia Romagna region (Italy); (16) Facing operational problems in a biodigeser in Yuvientsa - Amazonian Region of Ecuador; (17) Biogas plant instead of milk cow - payment and occupation with the use of grassilage; (18) Biogas in ecologic agriculture - experiences from 3 years of fermentation of grass-clover ley; (19) Combined solar-biogas basis for the

  5. Energy from biomass. Teaching material; Energie aus Biomasse. Ein Lehrmaterial

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-04-01

    The textbook discusses the available options for power and heat generation from biomass as well as the limits of biomass-based power supply. The main obstacle apart from the high cost is a lack of knowledge, which the book intends to remedy. It addresses students of agriculture, forestry, environmental engineering, heating systems engineering and apprentice chimney sweepers, but it will also be useful to all other interested readers. [German] Biomasse kann aufgrund seiner vielfaeltigen Erscheinungs- und Umwandlungsformen sowohl als Brennstoff zur Waerme- und Stromgewinnung oder als Treibstoff eingesetzt werden. Die energetische Nutzung von Biomasse birgt zudem nicht zu verachtende Vorteile. Zum einen wegen des Beitrags zum Klimaschutz aufgrund der CO{sub 2}-Neutralitaet oder einfach, weil Biomasse immer wieder nachwaechst und von fossilen Ressourcen unabhaengig macht. All den bisher erschlossenen Moeglichkeiten der energetischen Nutzung von Biomasse moechte dieses Lehrbuch Rechnung tragen. Es zeigt aber auch die Grenzen auf, die mit der Energieversorgung durch Bioenergie einhergehen. Hohe Kosten und ein erhebliches Informationsdefizit behinderten bisher eine verstaerkte Nutzung dieses Energietraeges. Letzterem soll dieses Lehrbuch entgegenwirken. Das vorliegende Lehrbuch wurde fuer die Aus- und Weiterbildung erstellt. Es richtet sich vor allem an angehende Land- und Forstwirte, Umwelttechniker, Heizungsbauer und Schornsteinfeger, ist aber auch fuer all diejenigen interessant, die das Thema ''Energie aus Biomasse'' verstehen und ueberblicken moechten. (orig.)

  6. Potenziale der Elektrizitätserzeugung aus erneuerbaren Ressourcen im Freistaat Sachsen

    OpenAIRE

    Hobbie, Hannes; Schippers, Vera; Zipf, Michael; MÖST, Dominik

    2015-01-01

    Der Freistaat Sachsen verfügt über große Potenziale hinsichtlich der Elektrizitätserzeugung aus Windkraft, Photovoltaik, sowie Biogas aus landwirtschaftlicher Biomasse. Im Rahmen dieser großteilig auf geographischen Informationssystemen (GIS) basierenden Analyse wird für die Ermittlung des wirtschaftlichen Potenzials bei Windenergie und Photovoltaik jeweils die EEG-Vergütung nach dem EEG 2012 bei Inbetriebnahme der Anlagen im Jahr 2013 herangezogen. Bei voller Ausschöpfung aller Flächen beträ...

  7. Potenziale der Elektrizitätserzeugung aus erneuerbaren Ressourcen im Freistaat Sachsen

    OpenAIRE

    Hobbie, Hannes; Schippers, Vera; Zipf, Michael; MÖST, Dominik

    2014-01-01

    Der Freistaat Sachsen verfügt über große Potenziale hinsichtlich der Elektrizitätserzeugung aus Windkraft, Photovoltaik, sowie Biogas aus landwirtschaftlicher Biomasse. Im Rahmen dieser großteilig auf geographischen Informationssystemen (GIS) basierenden Analyse wird für die Ermittlung des wirtschaftlichen Potenzials bei Windenergie und Photovoltaik jeweils die EEG-Vergütung nach dem EEG 2012 bei Inbetriebnahme der Anlagen im Jahr 2013 herangezogen. Bei voller Ausschöpfung aller Flächen beträ...

  8. Photovoltaik und Biomasse: Status quo, Standortsteuerung und Perspektiven aus der Sicht von Landesplanung und -entwicklung

    OpenAIRE

    Wagner, Sebastian

    2013-01-01

    "Die Erzeugung regenerativer Energien mit Photovoltaik oder Biomasse ist mit einem hohen Flächenbedarf verbunden. Das begrenzte Potenzial dafür geeigneter Flächen in Verbindung mit der Herausforderung, den hohen Energiebedarf substituieren zu müssen, der gegenwärtig durch den Einsatz fossiler Energieträger gedeckt wird, erfordert für eine sachgerechte Verteilung eine substanziell ermittelte Datengrundlage und regional differenzierte Betrachtung sowie Steuerung. Anhand von Beispielen aus (Ober...

  9. Energy from biomass. Ethics and practice; Energie aus Biomasse. Ethik und Praxis

    Energy Technology Data Exchange (ETDEWEB)

    Franke, Silke (ed.)

    2013-06-01

    The implementation of the energy policy turnaround inevitably results in modifications of the land use and landscape. Besides the discussion about the environmental consequences, a debate about ethical issues increasingly arose. Under this aspect, the booklet under consideration contains the following contributions: (1) Renewable energy sources - the role of bioenergy (Bernard Widmann); (2) Energy from biomass - An ethic analysis (Stephan Schleissing); (3) Culture for our landscapes - combination of biomass and water protection (Frank Wagener); (4) Cultivation of energy crops - short rotation coppices (Frank Burger); (5) Bioenergy region Straubing-Bogen: Excellent in the matter of renewable energy sources (Josefine Eichwald); (6) Rural development - motor for the energy policy turnaround (Roland Spiller).

  10. Energy from waste. Utilization of biomass and substitute fuels; Energie aus Abfall. Biomasse- und Ersatzbrennstoffverwertung

    Energy Technology Data Exchange (ETDEWEB)

    Fricke, K.; Bergs, C.G.; Kosak, G.; Wallmann, R. (eds.)

    2008-07-01

    Within the 69th symposium of ANS e.V. (Braunschweig, Federal Republic of Germany) with the title 'Energy from waste - utilization of biomass and refuse-derived fuels' at 16th and 17th September, 2008, the following lectures were held: (1) Resource efficient operation in waste management (Klaus Fricke, Tobias Bahr, Timo Thiel, Oliver Kugelstadt); (2) A contribution of the waste management to a sustainable energy supply (principle lecture by Helge Wendenburg and Claus-Gerhard Bergs); (3) Energy from waste - Potentials and possibilities of utilization (Rainer Wallmann, Thomas Fritz); (4) Attempts of optimisation for the supply of secondary fuels and energy by waste incinerators (Bernhard Gallenkemper); (5) Supply of power by thermal waste treatment facilities (Arnd I. Urban); (6) Updating a fermentation compound in the compost heap Goettingen (Ottomar Ruehl); (7) An innovative concept for the utilization of waste biomass as an energy resource (Jens-Kai Wegener, Wolfgang Luecke); (8) A future orientated technological conversion of the energetical utilization of biomass (Achim Loewen); (9) Synergistic effects of a co-fermentation with clarification sludge and liquid manure (Norbert Dichtl, Wiebke Rand); (10) Further Development of anaerobic technology from microbiology to utilization of gas (Frank Scholwin, Michael Nelles); (11) Dry fermentation of biomass from waste (Rolf Lieberneiner, Ulf Theilen); (12) Solid-Liquid separation of municipal waste - an experience report VM press (Gregor Stadtmueller); (13) A cost effective total solution of the treatment of biological wastes with partial flow fermentation (Martin Mayer); (14) An exemplary economical optimisation in the composting of wastes by means of a preinstalled fermentation technology with utilization of waste heat (Peter Lutz); (15) Secondary fuels - processing and utilization (Thomas Pretz); (16) Sewage sludge - waste or substitute fuel? (Armin Uhrig); (17) Utilisation of substitute fuels in the paper

  11. Bioethanol from biomass containing lignocellulose - potential and technologies; Bioethanol aus lignocellulosehaltiger Biomasse - Potenziale und Technologien

    Energy Technology Data Exchange (ETDEWEB)

    Faulstich, M.; Schieder, D.; Wagner, U.; Staudenbauer, W.; Igelspacher, R.; Schwarz, W.H.; Meyer-Pittroff, R.; Antoni, D. [Technische Univ. Muenchen (Germany); Prechtl, S. [ATZ Entwicklungszentrum, Sulzbach-Rosenberg (Germany); Bauer, W.P.; Kroner, T. [ia GmbH, Wissensmanagement und Ingenieurleistungen, Muenchen (Germany)

    2004-07-01

    The EU biofuels directive and the tax exemption of biogenic fuels have established a new market for bioethanol in the transport sector. Low-cost lignocellulose biomass (LCB) may be an option for broadening the raw materials base for bioethanol production and to meet the increasing demand for biogenic fuels. Appropriate conversion technologies have been the subject of much research worldwide during the past few years. Against this background, the Bavarian State Minister of Agriculture and Forestry initiated a feasibility study on ethanol production by bioconversion in Bavaria. (orig.)

  12. Practice of the utilization of biomass from waste materials; Praxis der Verwertung von Biomasse aus Abfaellen

    Energy Technology Data Exchange (ETDEWEB)

    Wiemer, Klaus; Kern, Michael; Raussen, Thomas (eds.)

    2010-07-01

    Within the 4th Witzenhaeuser Biomass Conference from 10th to 11th November, 2010, in Witzenhausen (Federal Republic of Germany) the following lectures were held: (1) Consequences of the amendment of the law of life-cycle management and biological waste regulations for the practice of acquisition and utilization of biological wastes (Claus-Gerhard Bergs); (2) An eco-efficient handling with biological wastes and composting wastes (Siegfried Kreibe); (3) Perspectives of the biological waste management (Michael Kern); (4) Assessment of waste biogas plants by environmental verifiers - implementation of the EEG novella (Michael Hub); (5) Fermentation of biogenic residuals - State of the art and perspectives (David Wilken); (6) Energy from cultivation masses and waste biomasses - Perspectives for Europe (Katja Bunzel); (7) Optimization of a biogas plant in practical operation (Michael Buchheit); (8) Odour situation and germ situation before and after an integration of a biogas plant in a composite system (Juergen Roth); (9) Aspects of immission protection rights according to the requirements on the permission and operation of biogas plants (Norbert Suritsch); (10) Actual veterinary regulatory, fertilizer regulatory and waste regulatory requirements on the treatment and utilization of fermentation products (Andreas Kirsch); (11) Utilization of fermentation residues from biological waste: Basic conditions and technology of processing (Thomas Raussen); (12) Practical experiences and new developments using selected examples: Pohlsche Heide, Baar (Switzerland) and Cesena (Italy) (Peter Lutz); (13) New facility concepts of dry fermentation in Lohfelden and Uelzen (Gunnar Ziehmann); (14) New facility concepts of plug flow fermentation (Michael Oertig); (15) Further development of the KOMPOFERM {sup registered} systems (Sandra Striewski); (16) Optimization of the gas yield and reduction of disruptive substances in the processing of biological wastes for the wet fermentation

  13. Nahrungsmittelstandards: ein Vergleich zweier privatwirtschaftlicher Initiativen aus Sicht landwirtschaftlicher Erzeuger

    OpenAIRE

    Herzfeld, Thomas; Teuber, Ramon

    2012-01-01

    Increasing food safety requirements of Western European and US-American retailers for food imports from developing countries are in the centre of intense debate. Smallholders' access to global value chains and potential dependencies form the core critique. This contribution discusses retailer-driven private international food safety standards within a comparative context. We discuss agricultural producer's motivation to adopt either an organic agricultural standard or a retailer initiated bus...

  14. Progress in biogas II - Biogas production from agricultural biomass and organic residues. Pt. 2. Proceedings; Progress in Biogas II - Biogasproduktion aus landwirtschaftlicher Biomasse und organischen Reststoffen. T. 2. Tagungsband

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-08-12

    Within the International Congress at the University of Hohenheim (Stuttgart, Federal Republic of Germany) from 29th March to 1st April, 2011, beside numerous poster presentations the following lectures were held: (1) Coverage of digestate storage tanks: why it is necessary and technical solutions (Paolo Balsari); (2) Digestate Standard in the United Kingdom (David Collins); (3) Unraveling the causes of nitrogen losses from the bioslurry and strategies for value addition (Steven Nyanzi); (4) Biological nitrogen removal from the liquid phase of anaerobic digestate of livestock effluents and energy crops (Francesco Fatone); (5) Ammonium loss of digestate during drying (Claudia Maurer); (6) Innovative process of gaining efficient fertilizers from digestates (Daniel Schloz).

  15. Process chain analysis for methanol production from biomass with the aid of mathematical models; Prozesskettenanalyse fuer die Methanolerzeugung aus Biomasse mit Hilfe von mathematischen Modellen

    Energy Technology Data Exchange (ETDEWEB)

    Saller, G.; Krumm, W. [Siegen Univ. (Gesamthochschule) (Germany)

    1996-12-31

    Using the example of primary energy consumption for methanol production from cellulose-rich biomass, it is shown that process chain analysis with mathematical modelling of the technical systems enables calculations of eco-inventories as a function of the relevant process parameters. Optimisation of process chains with regard to ecological indicators or cost necessitates mathematical modelling because of the many different parameters and parameter combinations involved. (orig) [Deutsch] Am Beispiel des Primaerenergieaufwands bei der Methanolgewinnung aus zellulosealtiger Biomasse wurde gezeigt, dass die Prozesskettenanalyse mit Abbildung der technischen Systeme in mathematischen Modellen die Berechnung von Oekoinventaren in Abhaengigkeit der relevanten Prozessparameter erlaubt. Die Optimierung von Prozessketten hinsichtlich oekologischer Indikatoren oder Kosten ist wegen der Vielzahl an unterschiedlichen Parametern und deren Kombinationsmoeglichkeiten nur mit Hilfe mathematischer Modelle moeglich. (orig)

  16. Gas, power and heat generation from biomass by allothermal gasification; Gas-, Strom- und Waermeerzeugung aus Biomasse durch allotherme Vergasung

    Energy Technology Data Exchange (ETDEWEB)

    Yaqub Chughtai, M. [H und C Engineering GmbH, Gummersbach (Germany); Muehlen, H.J. [DMT-Gesellschaft fuer Forschung und Pruefung mbH, Essen (Germany)

    1998-09-01

    The allothermal DMT gasification process for biomass is a newcomer. The process, its initial materials, the uses of the product gas, and advantages of the allothermal process are described here. (orig./SR) [Deutsch] Der Einsatz des allothermen DMT-Vergasungsverfahrens fuer Biomasse ist neu. Verfahren, Einsatzstoffe und Produktgasnutzung, sowie Vorteile des allothermen Verfahrens werden hier beschrieben. (orig./SR)

  17. Biomass based energy. A review on raw materials and processing methods; Energie aus Biomasse. Eine Uebersicht ueber Rohstoffe und Verfahren

    Energy Technology Data Exchange (ETDEWEB)

    Woellauer, P.

    2007-07-01

    The book reviews the variety of biogenic raw materials and the technologically important biomass conversion techniques. The chapter on the different kinds of biomass includes a) wood from forestry, landscape culturing and saw mills, bark and old wood; b) plants (corn, miscanthus, cannabis, wheat, rye, sugar beets, grass, rape, etc.), residuals and wastes (straw, liquid manure, slaughthouse wastes, kitchen wastes, sewage sludge, others). The chapter on biomass conversion processing discusses combustion, oxidation in spercritical water, gasification and reforming, fermentation, extrusion or extraction, and downstream processes. The chapter on biomass based electricity and mechanical energy includes refrigeration engineering, direct utilization: Otto engines, Diesel engines, microgas turbine fuel cells, and heat processing: Striling engine, vapour turbine, ORC turbine, externally fired gas turbine, and the Kalina process.

  18. Catalytically supported reduction of emissions from small-scale biomass furnace systems; Katalytisch unterstuetzte Minderung von Emissionen aus Biomasse-Kleinfeuerungsanlagen

    Energy Technology Data Exchange (ETDEWEB)

    Hartmann, Ingo; Lenz, Volker; Schenker, Marian; Thiel, Christian [DBFZ Deutsches Biomasseforschungszentrum gemeinnuetzige GmbH, Leipzig (Germany); Kraus, Markus; Matthes, Mirjam; Roland, Ulf [Helmholtz-Zentrum fuer Umweltforschung GmbH - UFZ, Leipzig (Germany); Bindig, Rene; Einicke, Wolf-Dietrich [Leipzig Univ. (Germany)

    2011-06-29

    total oxidation of the pollutants normally, an external heating, preferably by electrical method, is necessary. The electrostatic pre-separation of dust can reduce the dust loading of the catalyst significantly. An influence of the catalytic exhaust gas after-treatment on the dust composition based on the present investigations could not be clearly proven, but a dramatic impact, however, can be excluded from the studies. [German] Die verstaerkte Nutzung von fester Biomasse in Kleinfeuerungsanlagen zur Erzeugung von Waerme aus regenerativen Energiequellen geht leider mit einem erhoehten Ausstoss an luftgetragenen Schadstoffen einher. Die Minderung ist einerseits durch den Einsatz hochwertiger moderner Feuerungen nach dem neusten Stand der Technik moeglich. Andererseits werden derzeit mehrere vielversprechende Verfahrensansaetze zur Nachruestung von Kleinfeuerungen entwickelt, die eine effektive Emissionsminderung durch die nachtraegliche Behandlung des Abgases erlauben sollen. Die im Rahmen dieses Projektes erarbeitete Uebersicht der am Markt verfuegbaren oder in aktuellen Forschungsprojekten in der Entwicklung befindlichen sekundaeren Emissionsminderungstechniken an Biomasse-Kleinfeuerungsanlagen zeigt, dass weiterhin erheblicher Forschungsbedarf zur nachhaltigen Waermeerzeugung aus biogenen Festbrennstoffen besteht. Die Novellierung der 1. BImSchV sieht eine notwendige drastische Reduzierung von ausgestossenen Luftschadstoffen aus Biomasse-Kleinfeuerungsanlagen vor. Beim Einsatz des Brennstoffes Holz in modernen Zentralheizungskesseln koennen bei Volllast die geforderten Grenzwerte eingehalten werden. Dynamische Lastaenderungen koennen jedoch auch bei Holzzentralheizungskesseln kurzzeitige drastische missionsanstiege bewirken. Feuerraum- und Regelungsoptimierungen muessen in Zukunft zu einer weiteren Absenkung von Emissionswerten beitragen. Die typischen einfachen Einzelraumfeuerstaetten wie handbeschickte Stueckholzfeuerungen sind unter Typenpruefbedingungen zur

  19. Catalytically supported reduction of emissions from small-scale biomass furnace systems; Katalytisch unterstuetzte Minderung von Emissionen aus Biomasse-Kleinfeuerungsanlagen

    Energy Technology Data Exchange (ETDEWEB)

    Hartmann, Ingo; Lenz, Volker; Schenker, Marian; Thiel, Christian [DBFZ Deutsches Biomasseforschungszentrum gemeinnuetzige GmbH, Leipzig (Germany); Kraus, Markus; Matthes, Mirjam; Roland, Ulf [Helmholtz-Zentrum fuer Umweltforschung GmbH - UFZ, Leipzig (Germany); Bindig, Rene; Einicke, Wolf-Dietrich [Leipzig Univ. (Germany)

    2011-06-29

    total oxidation of the pollutants normally, an external heating, preferably by electrical method, is necessary. The electrostatic pre-separation of dust can reduce the dust loading of the catalyst significantly. An influence of the catalytic exhaust gas after-treatment on the dust composition based on the present investigations could not be clearly proven, but a dramatic impact, however, can be excluded from the studies. [German] Die verstaerkte Nutzung von fester Biomasse in Kleinfeuerungsanlagen zur Erzeugung von Waerme aus regenerativen Energiequellen geht leider mit einem erhoehten Ausstoss an luftgetragenen Schadstoffen einher. Die Minderung ist einerseits durch den Einsatz hochwertiger moderner Feuerungen nach dem neusten Stand der Technik moeglich. Andererseits werden derzeit mehrere vielversprechende Verfahrensansaetze zur Nachruestung von Kleinfeuerungen entwickelt, die eine effektive Emissionsminderung durch die nachtraegliche Behandlung des Abgases erlauben sollen. Die im Rahmen dieses Projektes erarbeitete Uebersicht der am Markt verfuegbaren oder in aktuellen Forschungsprojekten in der Entwicklung befindlichen sekundaeren Emissionsminderungstechniken an Biomasse-Kleinfeuerungsanlagen zeigt, dass weiterhin erheblicher Forschungsbedarf zur nachhaltigen Waermeerzeugung aus biogenen Festbrennstoffen besteht. Die Novellierung der 1. BImSchV sieht eine notwendige drastische Reduzierung von ausgestossenen Luftschadstoffen aus Biomasse-Kleinfeuerungsanlagen vor. Beim Einsatz des Brennstoffes Holz in modernen Zentralheizungskesseln koennen bei Volllast die geforderten Grenzwerte eingehalten werden. Dynamische Lastaenderungen koennen jedoch auch bei Holzzentralheizungskesseln kurzzeitige drastische missionsanstiege bewirken. Feuerraum- und Regelungsoptimierungen muessen in Zukunft zu einer weiteren Absenkung von Emissionswerten beitragen. Die typischen einfachen Einzelraumfeuerstaetten wie handbeschickte Stueckholzfeuerungen sind unter Typenpruefbedingungen zur

  20. Chemische Wertschöpfung aus Biomasse mittels selektiver katalytischer Oxidation zu Ameisensäure (FA) - der Erlanger OxFA-Prozess

    OpenAIRE

    Albert, Jakob

    2015-01-01

    Die Aufgabe der vorliegenden Arbeit bestand darin, den OxFA-Prozess zur oxidativen Gewinnung von Ameisensäure aus Biomasse weiterzuentwickeln und in einen technisch realisierbaren Prozess zu überführen. Zunächst wurde eine Abschätzung der Umsetzbarkeit verschiedener Biomassen vorgenommen. Es zeigte sich, dass die Umsetzung wasserlöslicher Biopolymere zu sehr hohen FA-Ausbeuten führt. Dabei spielen die Funktionalisierung des Kohlenstoffgerüsts sowie im Falle von Mehrfachzuckern die Verknüpf...

  1. Particle Reduction Strategies - PAREST. Agricultural emissions. Sub-report; Strategien zur Verminderung der Feinstaubbelastung - PAREST. Landwirtschaftliche Emissionen. Teilbericht

    Energy Technology Data Exchange (ETDEWEB)

    Daemmgen, Ulrich; Haenel, Hans-Dieter; Roesemann, Claus; Hahne, Jochen [Johann Heinrich von Thuenen-Institut (vTI), Braunschweig (Germany); Eurich-Menden, Brigitte; Grimm, Ewald; Doehler, Helmut [Kuratorium fuer Technik und Bauwesen in der Landwirtschaft e.V. (KTBL), Darmstadt (Germany)

    2013-06-15

    The German agricultural emission inventory is designed as an instrument of policy advice. The essential aim is to describe the emitting processes so that options for reducing emissions can be quantified. The German agricultural emission model GAS-EM uses in the field of NH{sub 3} emissions from soils and plants in the EMEP / CORINAIR Guidebook (EMEP / CORINAIR, 2002) proposed methods. These differ in emission factors between several types of fertilizers and their application to acre or grassland in function of the average spring temperature. In the field of emissions from animal husbandry GAS-EM follows a material flow approach, where initially the energy and nutrient requirements for a given power (here are weight, weight gain, milk yield, number of piglets, etc. involved) the excretion of metabolizable carbon compounds and the N excretion can be calculated with feces and urine. Subsequently, for all animal species emissions of nitrogen species NH{sub 3}, NO, N{sub 2}O and N{sub 2} from the grazing, indoor housing, storage and distribution of farm fertilizers calculated. [German] Das deutsche landwirtschaftliche Emissionsinventar ist als Instrument der Politikberatung konzipiert. Wesentliches Ziel ist es, die emittierenden Prozesse so zu beschreiben, dass Minderungsmoeglichkeiten quantifiziert werden koennen. Das deutsche landwirtschaftliche Emissions-Modell GAS-EM bedient sich im Bereich der NH{sub 3}-Emissionen aus Boeden und Pflanzen der im EMEP/CORINAIR-Guidebook (EMEP/CORINAIR, 2002) vorgeschlagenen Methoden. Diese unterscheiden bei den Emissionsfaktoren zwischen mehreren Duengersorten und deren Anwendung auf Acker oder Gruenland in Abhaengigkeit von der mittleren Fruehjahrstemperatur. Im Bereich der Emissionen aus der Tierhaltung verfolgt GAS-EM einen Stofffluss-Ansatz, bei dem zunaechst ueber den Energie- und Naehrstoffbedarf bei gegebener Leistung (hier werden Gewicht, Gewichtszuwachs, Milchleistung, Zahl der Ferkel u. ae. hinzugezogen) die Ausscheidungen

  2. Production of ethanol from lignocellulosic biomass. State of the art and perspectives; Bioethanolproduktion aus Lignocellulose. Stand der Technik und Perspektiven

    Energy Technology Data Exchange (ETDEWEB)

    Kroner, T. [ia GmbH, Muenchen (Germany); Prechtl, S. [ATZ Entwicklungszentrum, Sulzbach-Rosenberg (Germany); Igelspacher, R. [Technische Univ. Muenchen (Germany). Lehrstuhl fuer Energiewirtschaft und Anwendungstechnik; Schieder, D.; Schwarz, W.H. [Technische Univ. Muenchen (Germany). Lehrstuhl fuer Mikrobiologie; Antoni, D. [Technische Univ. Muenchen (Germany). Lehrstuhl fuer Energie- und Umwelttechnik der Lebensmittelindustrie; Faulstich, M. [Technische Univ. Muenchen (Germany). Lehrstuhls fuer Technologie Biogener Rohstoffe; ATZ Entwicklungszentrum, Sulzbach-Rosenberg (Germany)

    2006-07-01

    While many kinds of renewable energy sources are suitable for power and heat generation, at present only biomass can be used as fuel for transportation. Biodiesel from rape seed and ethanol from corn are the most common biofuels in Germany. Due to the limited and expensive feedstock, an increasing number of fast growing and economic alternatives is being researched. One possibility could be the use of lignocellulosic biomass for the production of ethanol. The following article gives a survey to suitable processes and shows their advantages and disadvantages. (orig.)

  3. Decentralized power generation from solid biomass in the course of the Renewable Energy Law (EEG); Dezentrale Stromerzeugung aus fester Biomasse im Rahmen des Erneuerbare-Energien-Gesetzes (EEG)

    Energy Technology Data Exchange (ETDEWEB)

    Sauter, Philipp; Witt, Janet; Billig, Eric [DBFZ Deutsches Biomasseforschungszentrum gemeinnuetzige GmbH, Leipzig (Germany). Bereich Bioenergiesysteme

    2012-07-01

    The increased use of renewable energy sources is the stated goal of the German and European climate policy. According to the German government, in 2020, 35 % of electricity production will be covered by renewable energy (currently 20 %). To achieve this goal, the federal government has enacted the EEG. Currently, solid biomass plays an important role by having a share of 10 % of renewable electricity production while providing combined heat and power (CHP). Since the enactment of the EEG in 2000, the number, as well as the installed capacity of biomass (thermal) power plants (CHP) increased more than tenfold. During the first two versions of the EEG (EEG 2000 and EEG 2004) mainly larger (> MW{sub el}) and medium (> 500 MW{sub el}) sized biomass CHP-plants were installed. Later on (EEG 2009), progressively smaller biomass CHP-plants were built. This is due to the increasing scarcity of fuel wood as well as technological advances in power generation of small biomass CHP-plants - initially in the use of ORC turbines and most recently in the development of thermochemical gasifiers with a gas engine attached. In total, German CHP-plants using solid biomass produced 9 590 GWhel EEG relevant electricity in 2011. Therefore, more than 7.8 million tbone dry wood is used (except the fuel used in CHP-plants of the pulp and paper industry). It is expected, that the use of other types of biomass, such as straw, miscanthus and other energy crops will increase in the near future and mostly small, heat-operated biomass CHP-plants will be installed. (orig.)

  4. Higher efficiency, lower bonuses. Financial incentives for power from biomass according to EEG 2012; Mehr Effizienz, weniger Boni. Die Foerderung von Strom aus Biomasse nach dem EEG 2012

    Energy Technology Data Exchange (ETDEWEB)

    Mueller, Dominik [Ecologic Institute, Berlin (Germany)

    2012-07-01

    The German parliament passed a total of eight new laws for the intended energy turnaround. Apart from changes in atomic law, the focus was on a complete amendment of the Renewables Act (EEG). The contribution outlines the new regulations for power generation from biomass from 2012. It indicates the changes from former regulations and describes the structural changes required for sustainable power supply from biomass, among others.

  5. Results of a demonstration experiment: Hydrogenation of pyrolysis oils from biomass; Ergebnisse eines Demonstrationsversuchs zur Hydrierung von Pyrolyseoelen aus Biomassen

    Energy Technology Data Exchange (ETDEWEB)

    Kaiser, M. [DMT-Gesellschaft fuer Forschung und Pruefung mbH, Essen (Germany)

    1998-09-01

    Sump phase hydrogenation is a technique specially developed for coal liquefaction; it provides a possibility of processing the liquid products of biomass pyrolyis into high-grade carburettor fuels. A demonstration experiment was carried out at the hydrogenation plant of DMT. The plant has a capacity of 10 kg/h. The technical feasibility of hydrogenation of biomass oils was demonstrated in a continuous experiment. The contribution describes the experimental conditions, yields, and product qualities. (orig.) [Deutsch] Die fuer die Kohleverfluessigung entwickelte Sumpfphasenhydrierung bietet die Moeglichkeit, die Fluessigprodukte der Pyrolyse von Biomassen zu hochwertigen Vergaserkraftstoffen zu veredeln. Im Hydriertechnikum der DMT wurde hierzu ein Demonstrationsversuch durchgefuehrt. Die Anlage ist fuer einen Kohledurchsatz von 10 kg/h ausgelegt. In einem kontinuierlichen Versuchslauf wurde mit dieser Anlage die technische Machbarkeit der Hydrierung von Bio-Oelen demonstriert. In dem vorliegenden Beitrag werden die Versuchsbedingungen, Ausbeuten und Produktqualitaeten vorgestellt. (orig.)

  6. Fundamental studies on combined separation of dust and gaseous pollutants in biomass combustion systems; Grundlagenuntersuchungen zur kombinierten Abscheidung von Staeuben und gasfoermigen Schadstoffen aus Biomasseverbrennungsanlagen

    Energy Technology Data Exchange (ETDEWEB)

    Hemmer, G.

    2002-07-01

    The author attempted to characterise a model process for combined separation of redispersed ashes of a biomass combustion system (tree bark ash) and a waste incinerator, with acid pollutant gases (SO{sub 2} and HCl) in the carrier gas. The acid gases were reduced using the most common industrial sorbents,i.e. bicarbonate of sodium (NaHCO{sub 3}) and calcium hydroxide (Ca(OH)-2). The development and construction of a combined filtration system was a basic prerequisite of the investigations. [German] Das Ziel der vorliegenden Arbeit war die Charakterisierung eines Modellprozesses zur kombinierten Abscheidung von redispergierten Aschen aus einer Biomasseverbrennung (Rindenasche) und einer Hausmuellverbrennung zusammen mit sauren Schadgasen (SO{sub 2} und HCl) im Traegergas. Zur Reduktion der sauren Schadgase wurden dabei die industriell am haeufigsten verwendeten Sorbentien, Natriumbicarbonat (NaHCO{sub 3}) und Calciumhydroxid (Ca(OH){sub 2}), eingesetzt. Eine grundlegende Voraussetzung fuer die Untersuchungen zur kombinierten Abscheidung von Staeuben und gasfoermigen Schadstoffen war die Errichtung einer eigens zu diesem Zweck entwickelten Filtrationsanlage (Kombi-Filteranlage). (orig.)

  7. Contribution of the renewable energy sources rape oil and biomass from wood plantations to climate protection; Beitrag der nachwachsenden Energietraeger Rapsoel und Biomasse aus Holzplantagen zum Klimaschutz

    Energy Technology Data Exchange (ETDEWEB)

    Teepe, R.; Brumme, R.; Flessa, H.; Beese, F. [Goettingen Univ. (Germany). Inst. fuer Bodenkunde und Waldernaehrung

    1999-07-01

    The objective of the present study was to find out whether and to what extent the N{sub 2}O and CH{sub 4} budgets of poplar plantations and rape fields have potential for cutting carbon dioxides and, hence, influence the ecological valuation of the alternative energy sources poplar chipwood and rape oil. N{sub 2}O and CH{sub 4} budgets were measured over a period of 1.5 years; annual budgets were converted into carbon dioxide equivalents. Furthermore, net energy yield was calculated and trace gas emissions from all production steps were established. From this the carbon dioxide conservation effect of the two renewable energy sources and the influence of soil-related trace gas emissions could be determined. (orig.) [German] Ziel dieser Studie war es, zu untersuchen, ob und in welchem Mass die N{sub 2}O- und CH{sub 4}-Fluesse auf der Pappelplantage und dem Rapsfeld das CO{sub 2}-Einsparungspotential und damit die oekologische Bewertung der alternativen Energietraeger Pappel-Hackschnitzel und Rapsoel beeinflussen. Dazu wurden die N{sub 2}O- und CH{sub 4}-Fluesse im Verlauf von 1 {sup 1}/{sub 2} Jahren gemessen und die annuellen Fluesse in CO{sub 2}-Aequivalenten umgerechnet. Weiterhin wurden der Netto-Energieertrag berechnet und die Spurengasemissionen aus allen Produktionsschritten ermittelt. Hieraus liess sich der CO{sub 2}-Einsparungseffekt der beiden nachwachsenden Rohstoffe und der Einfluss der bodenbuertigen Spurengasfluesse bestimmen. (orig.)

  8. Prospects for biogenic natural gas. Pt. I. Production from wet and dry biomass; Perspektiven fuer Bio-Erdgas. T. I.. Bereitstellung aus nasser und trockener Biomasse

    Energy Technology Data Exchange (ETDEWEB)

    Leible, Ludwig; Kaelber, Stefan; Kappler, Gunnar [Karlsruher Institut fuer Technologie (KIT), Karlsruhe (DE). Inst. fuer Technikfolgenabschaetzung und Systemanalyse (ITAS); Eltrop, Ludger; Stenull, Maria [Stuttgart Univ. (DE). Inst. fuer Energiewirtschaft und Rationelle Energieanwendung (IER); Lansche, Jens [Hohenheim Univ., Stuttgart (Germany). Inst. fuer Agrartechnik; Poboss, Norman [Stuttgart Univ. (DE). Inst. fuer Feuerungs- und Kraftwerkstechnik (IFK); Stuermer, Bernd; Kelm, Tobias [Zentrum fuer Sonnenenergie- und Wasserstoff-Forschung Baden-Wuerttemberg (ZSW), Stuttgart (Germany); Koeppel, Wolfgang [Deutsche Vereinigung des Gas- und Wasserfaches e.V. (DVGW), Forschungsstelle am Engler-Bunte-Institut (EBI), Karlsruhe (Germany)

    2012-07-01

    Biogenic natural gas offers as substitute for natural gas (SNG) various opportunities for different types of biomass for a more efficient handling and energy use in the power, heat and fuel sector. Part I of this publication deals with techno-economic aspects of SNG production based on biogas and thermo-chemically produced gas. Associated GHG emissions are discussed as well. Part II focuses on the utilization of biogenic natural gas for heat, power and fuel production. A comparison with fossil natural gas and the direct use of biogas or thermo-chemically produced gas is included. (orig.)

  9. Ergebnisse eines Vergleichs von Rechtsformen landwirtschaftlicher Unternehmen in mittel- und osteuropäischen Ländern

    OpenAIRE

    Schulze, Eberhard; Netzband, Claudia

    1998-01-01

    Ziel der Analyse zu den Rechtsformen landwirtschaftlicher Unternehmen war es, Kenntnisse darüber zu gewinnen, welche Rechtsformen sich im Transformationsprozeß herausgebildet haben, welchen Umfang sie einnehmen, durch welche Merkmale sie gekennzeichnet sind und ob die Besteuerung Einfluß auf die Wahl der Rechtsform hat. Im Bericht wird dargelegt, welche Rechtsformen landwirtschaftlicher Unternehmen in den untersuchten Ländern entstanden sind, welche natürliche und welche juristische Personen ...

  10. Biomass as an energy source. An efficiency comparison from the view of land use; Biomasse als Energietraeger. Ein Effizienzvergleich aus Sicht der Landnutzung

    Energy Technology Data Exchange (ETDEWEB)

    Grosse, Werner [TU Dresden (Germany). Inst. fuer Internationale Forst- und Holzwirtschaft

    2011-07-01

    The growth in the world population correlates to this day with an increase in the consumption of resources. This rising consumption is coupled with greater use of land, and a decrease in the global forest area. These contrasting developments demand new concepts with regard to efficient land use. Efficiency in this context describes the relationship between the outcome and the outlay; essentially the degree of efficiency of a procedure with respect to the use of a commodity. Presented in the paper is an analysis of how, with more efficient technologies than those employed to date, biomass can be made available for energetic use. The backdrop to this is the more rapid increase in the energetic use of wood than material use in Europe and in the Federal republic of Germany, and a forecast annual wood shortfall (in Germany) of as much as 40 million m{sup 3} by the year 2020. The focus of this study is on the establishment of short rotation coppice on agricultural land, which is compared with the cultivation of annual agricultural energy crops on the basis of energy balances. Short rotation coppice plantations achieve an output: input ratio in the energy balance of up to 60: 1, whereas in the case of maize, for example, the ratio falls to 15: 1. In the course of economically-driven efforts to produce more biomass for the generation of heat, electricity and fuels, while at the same time attaining a positive ecological appraisal, such efficiency considerations must be accounted for to a greater extent than has been the case to date. (orig.)

  11. Low-energy membrane techniques for the separation of biomass from waste water; Niedrig-Energie Membranverfahren zur Abtrennung von Biomasse aus dem Abwasser

    Energy Technology Data Exchange (ETDEWEB)

    Rosenwinkel, K.H.; Wagner, J. [Hannover Univ. (Germany). Inst. fuer Siedlungswasserwirtschaft und Abfalltechnik

    1997-12-31

    Topics of this article are: low-energy membrane technologies for wastewater treatment; design; operation; costs of low-energy membrane technologies, investment and operating cost; available and used processes: WSMS, ZenoGem, Airlift, Bioloop, description of the process and performance. (SR) [Deutsch] Membranverfahren werden im steigenden Masse zur Aufbereitung von Wasser und Abwasser eingesetzt. Im Bereich der Abwasserbehandlung werden zunehmend Mikro- und Ultrafiltrations-Membranen zur Biomassenabtrennung und Entkeimung eingesetzt. Limitierender Faktor zur Steigerung der Raumausbeute des Belebungsverfahrens war bisher der Rueckhalt der Biomasse durch ein nachgeschaltetes Sedimentationsbecken. Durch den Einsatz von Membranen in der Abtrennung kann die Biomassenkonzentration im Belebungsverfahren um ein vielfaches gesteigert, und damit das erforderliche Reaktorvolumen um denselben Faktor reduziert werden. Die grosstechnische Verbreitung dieses Verfahrens ist in der kommunalen Abwasserreinigung bisher an zwei Kriterien gescheitert: Erstens liegen die Betriebskosten, vor allem aufgrund des erforderlichen Energieeinsatzes, deutlich hoeher als bei einer konventionellen Verfahrensfuehrung. Zweitens ist bisher eine Entkeimung fuer die wenigsten Klaeranlagen von den Aufsichtsbehoerden gefordert. Bei industriellen Abwaessern gelten bezueglich dieser Kriterien andere Grenzen aufgrund anderer Konzentrationen und Anforderungen. Im Rahmen dieses Uebersichts-Vortages sollen die von mehreren Herstellern entwickelten Niedrig-Energie-Membranverfahren vorgestellt werden. Durch die Verlegung der bisher druckseitig angeordneten Pumpen auf die Saugseite und den Einsatz der Belueftung zur Erzeugung der erforderlichen Ueberstroemung der Membranen ergibt sich eine deutliche Rezudierung des Energiebedarfes. Die sich daraus ergebenden Vorteile, die Kosten und die am Markt verfuegbaren Verfahren sollen im folgenden erlaeutert werden. (orig.)

  12. Elektronische Deichsel für landwirtschaftliche Arbeitsmaschinen mit Umfeldsensorik und zusätzlichen Geoinformationen

    OpenAIRE

    Jahnke, Bernhard; Noack, Patrick O.; Happich, Georg; Geimer, Marcus

    2012-01-01

    Während die Leistungsnachfrage landwirtschaftlicher Unternehmen bei Großtraktoren und selbstfahrenden Landmaschinen stetig wächst, erreichen Landmaschinenhersteller bezüglich Fahrzeuggröße und -masse insbesondere für den Straßenverkehr zunehmend kritische Werte. Das Konzept der elektronischen Deichsel hingegen ermöglicht durch den Einsatz fahrerloser Maschinen annähernd eine Verdopplung der Flächenleistung ohne zusätzlichen Personalaufwand und steigert somit Produktivität und Wirtschaftlichke...

  13. Elektronische Deichsel für landwirtschaftliche Arbeitsmaschine - Auf dem Weg nach autonomen Landmaschinen

    OpenAIRE

    Zhang, Xi; Geimer, Marcus; Noack, Patrick O.; Ehrl, Markus

    2010-01-01

    Diese Veröffentlichung stellt eine elektronische Deichsel für landwirtschaftliche Arbeitsmaschinen vor, die eine virtuelle Kopplung zwischen zwei Landmaschinen herstellen kann, damit eine mannlose Maschine einer führenden Maschine folgt und die gleiche Arbeit wie die führende gleichzeitig leisten kann. Die beiden Arbeitsmaschinen können im Feldeinsatz von einem Fahrer wie eine bedient und eingesetzt werden und die von einer Arbeitskraft im Feld bediente Leistung und Zugkraft können weiter ges...

  14. Effects of an intensified production adjustment to the biomass production in the operational sequence of agricultural enterprises on ecological and economic indices. Results of modellings in practical operations; Auswirkungen einer verstaerkten Produktionsausrichtung zur Biomasseerzeugung im Betriebsablauf landwirtschaftlicher Unternehmen auf oekologische und oekonomische Kennziffern. Ergebnisse von Modellierungen in Praxisbetrieben

    Energy Technology Data Exchange (ETDEWEB)

    Wagner, Bernhard; Reinicke, Frank

    2008-07-01

    The supply of biomass for the power generated is the centre of the contribution under consideration. Authoritative is the sustainable organization of the production in the cultivation of the energy crops and in the entire operating system. At first, the actual situation in selected operating systems is described due to the data of the last three years. From this, scenarios are derived in which the crop rotations are accomplished application specific and with consideration of the natural local conditions on an intensified production of bio sources of energy. Likewise, aspects of specifically changed nutrient flows and energy flows are pointed out such as the intensities in plant protection, the erosion danger and effects on the bio diversity. Only on basis of application specific analyses, the sustainability of production can be improved. Regional cultivation concentrations for energy crops are conceivable. However the borders of the cultivation of energy plant primarily depend on the economic characteristic numbers of individual companies.

  15. Bionic energy system based on an air breathing chemoelectric converter (fuel cell) with biomass-derived glucose as hydrogen transfer medium and assessment of renewable glucose production; Bionisches Energiesystem auf der Basis eines luftatmenden chemoelektrischen Wandlers (Brennstoffzelle) mit Glucose aus Biomasse als Wasserstoffuebertraeger sowie Abschaetzung des Potentials an nachwachsender Glucose

    Energy Technology Data Exchange (ETDEWEB)

    Radebold, R.; Radebold, W.

    2001-07-01

    The fundamental principles and thermodynamics of the biological energy system as well as the role of glucose and H{sub 2}O{sub 2} in the photosynthesis and breathing processes are briefly explained. Transposition of the principles in a bionic energy system is discussed, and resulting engineering aspects and advantages of a bionic energy system based on renewable biomass-derived glucose are shown and compared with conventional energy systems based on fossil fuels. The potential of inland production of suitable biomass is assessed. (orig./CB) [German] Funktion und Thermodynamik des biologischen Energiesystems sowie die Rollen von Glucose und H{sub 2}O{sub 2} in Photosynthese und Atmung werden kurz erlaeutert, ueber die Umsetzung dieser Prinzipien zu einem bionischen Energiesystem wird berichtet. Technische Konsequenzen und Vorteile eines bionischen Energiesystems mit Glucose aus nachwachsender Biomasse werden im Vergleich zum heutigen technischen Energiesystems mit fossilen Brennstoffen eroertert. Eine Schaetzung des heimischen Potentials an nachwachsender, fuer diese Zwecke geeigneter Biomasse wird vorgelegt: rund die Haelfte der heutigen Nutzenergie koennte ueber ein bionisches Energiesystem bereitgestellt werden. (orig.)

  16. Elektroenergieerzeugung aus erneuerbaren Energiequellen in Sachsen

    OpenAIRE

    Rindelhardt, Udo; Schwanitz, M.; Hackstein, G.; Riedel, J.

    2010-01-01

    Im Bericht werden die Potentiale zur Elektroenergieerzeugung aus verschiedenen erneuerbaren Energiequellen in Sachsen zusammengestellt. Dabei werden natürliche Potentiale und - wo möglich - technische Potentiale sowie wirtschaftliche Potentiale unterschieden. Das ermittelte technische Potential (ohne Biomasse) entspricht etwa einer Elektroenergieproduktion von 7400 GWh jährlich. Davon entfallen etwa 2/3 auf die Windenergie und der Rest zu gleichen Teilen auf die Wasserkraft und die Photovolta...

  17. Experience with fermentation of grass and grass silage from extensively used grassland. Feasibility study on monofermentation of grass silage from contaminated sites - biomass from grasslands of the Elbe dyke foreland; Betriebserfahrungen mit der Vergaerung von Gras und Grassilagen von extensiv genutztem Gruenland. Machbarkeitsuntersuchung zur Monovergaerung von Grassilagen schadstoffkontaminierter Standorte am Beispiel der eingesetzten Biomasse von Gruenlandflaechen aus dem Deichvorland der Elbe

    Energy Technology Data Exchange (ETDEWEB)

    Heuer, Hans-Juergen [Landwirtschaftskammer Niedersachsen, Bezirksstelle Uelzen (Germany)

    2011-07-01

    This feasibility study was concluded in 2011; monofermentation of grass silage from contaminated sites of the Elbe dyke foreland was investigated. It was found that a biogas operated in monofermentation of grass silage from extensively used grasslands is technically and economically feasible in batch operation. It was also shown that the fermentation residue can be used as agricultural fertilizer, provided that it is first turned in a compost turning unit and then worked into the soil. In view of the high pollutant concentration of the soils in the Elbe dyke foreland, the results of the project give the agricultural businesses in the Elbe valley grasslands an alternative use of the land. [German] Die Machbarkeitsuntersuchung zur Monovergaerung von Grassilagen schadstoffkontaminierter Standorte am Beispiel der eingesetzten Biomasse von Gruenlandflaechen aus dem Deichvorland der Elbe wurde Anfang Mai 2011 abgeschlossen. Im Ergebnis wurde herausgearbeitet, dass sich eine Biogaslage im Monovergaerungsverfahren mit ausschliesslich nur Grassilagen von extensiv gefuehrten Gruenlandflaechen technisch und wirtschaftlich in einer Batch-Anlage betreiben laesst. Auch wurde der Nachweis gefuehrt, dass die Biomasse aus dem Deichvorland der Elbe als Gaerrest auf das Gruenland im Deichvorland unter Beruecksichtigung von naturschutzfachlichen Vorgaben und nach den Vorgaben der guten fachlichen Praxis beim Duengen zurueckgefuehrt werden kann. Vor einer Aufbringung auf dem Gruenland sollte der feste Gaerrest jedoch mit einem Kompost-Umsetzer aufbereitet werden. Nach dem Ausstreuen auf dem Gruenland ist der Gaerrest mit einer Wiesenschleppe einzureiben. Vor dem Hintergrund der hohen Schadstoffbelastung der Boeden im Deichvorland der Elbe, tragen die im Projekt erarbeiteten Ergebnisse dazu bei, den landwirtschaftlichen Betriebsleitern in der Elbtalaue eine alternative Nutzung zur bisherigen Lebensmittelproduktion unterbreiten zu koennen.

  18. Silage seepage and water protection. Production and recovery of silage seepage from animal feed and biomass for biogas plants. 7. ed.; Silagesickersaft und Gewaesserschutz. Anfall und Verwertung von Silagesickersaft aus Futtermitteln und Biomasse fuer Biogasanlagen

    Energy Technology Data Exchange (ETDEWEB)

    Spiekers, Hubert [Bayerische Landesanstalt fuer Landwirtschaft (LfL), Freising-Weihenstephan (Germany); Attenberger, Erwin [Bayerisches Landesamt fuer Umwelt, Augsburg (Germany)

    2012-11-15

    The production of silage is now standard and an important basis for a successful milk and beef production. Silage is also needed in agricultural biogas plants as a substrate for energy production. This publication is intended to serve agriculture as a source of information and guidance document for the construction and operation of silos and the administration as an orientating work aid. The factors influencing the accumulation of silage seepage and the possibilities of prevention in silage and silage management are presented and evaluated from environmental and legal perspective. [German] Die Produktion von Silage ist heute Standard und eine wichtige Grundlage fuer eine erfolgreiche Milch- und Rindfleischerzeugung. Silage wird auch in landwirtschaftlichen Biogasanlagen als Substrat zur Energieerzeugung benoetigt. Die vorliegende Publikation soll der Landwirtschaft als Informationsquelle und Handlungsanleitung fuer den Bau und Betrieb von Siloanlagen und der Verwaltung als orientierende Arbeitshilfe dienen. Die Einflussgroessen auf den Anfall an Sickersaeften und die Moeglichkeiten der Vermeidung bei der Silierung und dem Silagemanagement werden dargestellt und aus umwelt- und rechtlicher Sicht bewertet.

  19. Swamp future. Energy for Western Pomerania Grid formation and potentials for the thermal utilization of biomass from paludi culture; MoorZukunft. Energie fuer Vorpommern. Netzwerkbildung und Potentiale fuer die thermische Verwertung von Biomasse aus Paludikultur

    Energy Technology Data Exchange (ETDEWEB)

    Nordt, Anke; Schroeder, Christian [Greifswald Univ. (Germany). Inst. fuer Botanik und Landschaftsoekologie; Schroeder, Philipp

    2013-10-01

    MoorZukunft aims to initiate pilot projects for utilisation biomass from ''wet'' peatland for energy purposes. Also alternative concepts of funding regional cooperations are to be developed. The implementation of paludiculture, the sustainable cultivation of rewetted peatland, needs innovative unions between farmers who produce primary material for paludi-products and biomass consumers for energy or material utilisation. Areas for implementing paludiculture are identified and potential partners for regional use and consumption are cross-linked. Business models will be developed with the parties of possible cooperations, i.g. between farmer and municipal energy supplier and functional attended until realisation. The procedure to initiate pilot projects will be explained. This expands from requests of areas and partners until possible forms of organisation locally shared utilisation partnerships. (orig.)

  20. Fuel gas from biomass for power and heat generation. Results of tests at the test gasification plant at Technical University Dresden; Brenngase aus Biomasse fuer die Strom- und Waermeerzeugung. Ergebnisse der Untersuchungen am Vergasungsversuchsstand der TU Dresden

    Energy Technology Data Exchange (ETDEWEB)

    Boehning, D.; Beckmann, M. [Technische Universitaet Dresden (Germany). Institut fuer Energietechnik

    2009-07-01

    The gasification of biomass into smaller decentralized plants with a thermal output up to 500 kW has been a subject of variable intensity in research and development. The current development state of the process is however still insufficient regardless of the process, such that a reliable and economic operation of the plants can be guaranteed. For the use of the produced fuel in the gas-engine, high standards are necessary for its quality. The article focusses on the reduction of tar content in fuel gas via catalytic partial oxidation. It describes the theoretical analysis of fundamentals with results and presents experimental tests at the gasification plant and the obtained results. Tests have been realized at the 75 kW{sub th} fixed bed gasifier at the catalytic partial oxidation (1{sup st} Function unit) and at the cooling of gas (2{sup nd} Function unit). The construction and material of the catalyst are essential parameters as well as the apply amount of oxygen, the position of supplying and mixing. By the use of a gas cooling in a stationary fluidized bed is it possible to decrease the tar content in the fuel gas, via condensation on bed material (charcoal). The gas cooling is installed behind the catalyst. The outcome of the combination of both gas treatment-function-units is a further monovariant for optimization. The second unit can also be considered as a ''safety filter''. (orig.)

  1. Kinder aus alkoholbelasteten Familien

    OpenAIRE

    Klein, Michael; Zobel, Martin

    1997-01-01

    Es wird ein Überblick zu Forschung und Theorienbildung in bezug auf Kinder aus alkoholbelasteten Familien gegeben. Diese weisen ein bis zu sechsfach erhöhtes Risiko auf, selbst abhängigkeitskrank zu werden und zeigen darüberhinaus häufiger auffällige Symptome, insbesondere in den Bereichen Angst, Depression, Eßstörungen, antisoziales Verhalten, Impulsivitätsstörungen und Störungen der Verhaltenskontrolle. Diese Störungen werden bisweilen direkt (z.B. als Alkoholembryopathie) oder meistens ind...

  2. Eine neue Moriola aus Java

    NARCIS (Netherlands)

    Bachmann, E.

    1936-01-01

    Unter allen Flechten unterscheidet sieh die nur aus Norwegen bekannte Gattung Moriola dadurch, dass ihr Lager aus Goniocysten besteht, das sind kugel- oder länglichrunde oder unregelmässig gestaltete braune Behälter mit netzartiger Oberfläche, von denen braune, zylindrische oder schwach torulöse Hyp

  3. Energetische Verwertung von Biomasse

    Science.gov (United States)

    Zahoransky, Richard; Allelein, Hans-Josef; Bollin, Elmar; Oehler, Helmut; Schelling, Udo

    Etwa 0,1% der Solarenergie wandeln sich durch Photosynthese aus dem Kohlendioxid der Luft in Biomasse um. Die Biomassen sind als Festbrennstoff nutzbar oder zu gasförmigen Brennstoffen weiterverarbeitbar. Zwei Arten von Biomassen sind zu unterscheiden: Anfallende Biomasse

  4. Verbesserung und Effizienzsteigerung landwirtschaftlicher Verfahrenstechnik durch wettbewerbsorientierte organisatorische Maßnahmen

    OpenAIRE

    Traurig, Rebecca E.

    2007-01-01

    Die Veränderungen, die aus dem technischen und biologischen Fortschritt in Verbindung mit einer kaum noch steigenden Nachfrage nach Agrarprodukten resultieren, werden die Struktur der Landwirtschaft prägen. Deshalb könnte sich großräumig eine Konzentration der landwirtschaftlichen Produktion in solchen Regionen ergeben, die aufgrund pedeologischer und klimatischer Gegebenheiten relativ günstige Voraussetzungen für eine verfahrenstechnisch optimierte bzw. einkommensträchtige Erzeugung bieten. ...

  5. Aus der Praxis

    Directory of Open Access Journals (Sweden)

    Elisabeth Eder-Janca

    2013-06-01

    Full Text Available Der erste Satz, den ich als Kind gehört habe, als es zum ersten Mal in die Schule ging lautete: „Jetzt beginnt der Ernst des Lebens!“ Als meine Tochter dreißig Jahre später in derselben Situation war, hatte sich an dem Spruch noch immer nichts geändert. Und auch heute, Jahre später, höre ich diese „aufmunternden“ Worte noch immer von Eltern. Trotz allen Ernstes habe ich mich seit 2000 entschlossen, genau in diesem schulischen Umfeld zu arbeiten – und es macht riesigen Spaß in Workshops, fortlaufenden Wochenveranstaltungen und Ferien/Mediencamps Kindern und Jugendlichen in der Freizeit und Schule medienpädagogische Inhalte zu vermitteln. Interessant ist es, sich die Entwicklung an der Schnittstelle von Schule, Medienpädagogik und Freizeitbereich anzusehen.Alle meine/unsere Projekte basieren auf dem Medienkompetenz-Modell von Baacke. Auch wenn es vielleicht oft diskutiert und hinlänglich bekannt ist, sollen hier nochmals die für unsere Arbeit relevanten Fakten erwähnt werden. Dieter Baacke geht in seiner Habilitationsschrift von 1973 von einer engen Verbindung von Medienkompetenz und Kommunikativer Kompetenz aus. Diese Kompetenz ist dem Menschen angeboren. Nichts desto trotz muss sie geübt, erweitert und weiterentwickelt werden. Das heißt, wir sind in der praktischen Arbeit am Zentrum für Medienkompetenz immer davon ausgegangen, dass speziell Kinder und Jugendliche Wissen haben und dieses Wissen geformt und erweitert werden kann und muss, um sie (medien-kompetent zu machen. Wichtig ist, dass sie sehr wohl als Kinder/Jugendliche und nicht als kleine Erwachsene gesehen wurden/werden. Speziell in letzter Zeit werden Kinder sehr häufig überschätzt und überfordert – sie sind aber immer noch Kinder!

  6. Elektromagnetische Strahlung. Informationen aus dem Weltall.

    Science.gov (United States)

    Schäfer, H.

    Contents: Informationen aus dem Weltall. Neue und zukünftige Geräte. Wichtiges und Interessantes aus der Positionsastronomie. Die Helligkeit der Sterne und anderer astronomischer Objekte. Spektroskopie und Spektralanalyse. Beobachtungen außerhalb des optischen Bereiches.

  7. Kuldma, Aus, Roosma ja Siska

    Index Scriptorium Estoniae

    2007-01-01

    2006. aasta Kuldnõela võitja kuulutatakse välja Tallinnas Viru keskuses 9.03.2007. Kandidaadid Katrin Kuldma kollektsiooniga Chocolate, Reet Aus kaubamärgiga Re Use, Tiiu Roosma pesukollektsiooniga BonBon Lingerie ja Marika Siska kaubamärgiga Sangar

  8. Möbeldekor aus Elfenbein

    OpenAIRE

    Gruber, Claudia

    2001-01-01

    Die Arbeit befaßt sich mit der Rekonstruktion von Elfenbeinen, die aus Ausgrabungen im Vorderen Orient stammen und als Möbelverzierung angesprochen werden. Anhand eines ikonographischen Vergleichs mit Denkmälern der entsprechenden Regionen, Assyrien, Nordsyrien/Südostkleinasien und Phönizien, und unter Einbeziehung von Originalmaterial wird versucht, theoretische Möglichkeiten einer Rekonstruktion zu erarbeiten. Besondere Aufmerksamkeit wird den technischen Merkmalen an den Elfenbeinen gesche...

  9. Ueber die Neoperla-Arten aus Java

    NARCIS (Netherlands)

    Klapálek, Fr.

    1910-01-01

    Die Anregung zum Versuche die bisher aus Java bekannten Neoperla-Arten zusammenzustellen, gab mir die Sendung des Herrn E. Jacobson aus Semarang. Sie enthielt zwei Arten, von welchen die eine für mich neu war; ich nehme mir die Freiheit dieselbe ihrem Entdecker zu widmen. Bei dieser Gelegenheit habe

  10. Nachtrag: Wie sieht die Zukunft Europas aus?

    OpenAIRE

    Alexander Schaub

    2005-01-01

    Nachtrag: Wie sieht die Zukunft Europas aus?Ergänzend zu dem im ifo Schnelldienst 15/2005 diskutierten Thema "Wie sieht die Zukunft Europas aus?" zieht Dr. Alexander Schaub, Europäische Kommisison, eine Bilanz der Erfolge des Europäischen Binnenmarktes und gibt einen Ausblick über seine Zukunft: "Es gibt viele Gründe, optimistisch zu sein. Europa hat seine Stärken. Schon vor der Erweiterung war der Europäische Binnenmarkt der größte in der Welt. Heute bietet er noch mehr Potential. Er ist unt...

  11. Grenzen interorganisationalen Lernens. Beobachtungen aus der Entwicklungszusammenarbeit

    OpenAIRE

    Ehlers, Kay E.; Wolff, Stephan

    2008-01-01

    Im interorganisationalen Zusammenhang von Entwicklungshilfeprojekten kooperieren Organisationen mit unterschiedlichen Intentionen und Tiefenstrukturen. Dabei entsteht, so kann mit theoretischer Analyse und mit empirischem Rückgriff auf vier Entwicklungshilfeprojekte aus dem Trinkwasser- und Hygienebereich gezeigt werden, kaum ein Raum gemeinsamen Lernens. Eher entsteht ein irritationsminimierendes sektoradäquates System - getrennt durch verschiedene Sichten, verbunden durch normierte Verständ...

  12. Mollusken aus posttertiären Schichten von Celebes

    NARCIS (Netherlands)

    Schepman, M.M.

    1912-01-01

    Die im Folgenden behandelten Mollusken stammen aus der Nähe von Kajoe ragi auf Celebes, woselbst sie durch R. FENNEMA aus denselben Schichten ausgelesen wurden, aus denen früher durch J. G. DE MAN einige brachyure Krebse beschrieben sind. Es darf deswegen betreffs näherer Angaben über die Herkunft d

  13. Operationalisierung der Anforderungen aus der ISO 26000

    OpenAIRE

    Gold, Fabian

    2013-01-01

    In der Norm DIN ISO 26000 (Leitfaden zur gesellschaftlichen Verantwortung) werden die Verantwortung von Organisationen "für die Auswirkungen ihrer Entscheidungen und Aktivitäten" auf Gesellschaft und Umwelt sowie Anforderungen zu transparentem und ethischem Verhalten für verantwortlich handelnde Organisationen in den Mittelpunkt gestellt. Die vorliegende Masterarbeit zeigt auf, wie sich die sieben Handlungsfelder aus der Norm DIN ISO 26000 operationalisieren lassen, und welche quantitative...

  14. Neuartige Tryptophan-Synthasen aus Hyperthermophilen: Charakterisierung der Enzyme aus Sulfolobus solfataricus

    OpenAIRE

    Leopoldseder, Sonja

    2006-01-01

    In der vorliegenden Arbeit wurde die Tryptophan Synthase aus Sulfolobus solfataricus strukturell und funktionell untersucht. Zu diesem Zweck wurden die Operon-ständigen Gene strpA und strpB2a, sowie das nicht Operon-ständige strpB2b getrennt in Escherichia coli exprimiert, die Genprodukte gereinigt und charakterisiert. sTrpB2a und sTrpB2b katalysieren mit vergleichbar hoher Effizienz die Synthese von Tryptophan aus Serin und Indol. Während sTrpB2b nicht mit sTrpA interagiert, bilden sTrpB2a ...

  15. Vermarktung von nach besonderen Richtlinien erzeugten landwirtschaftlichen Produkten aus dem Oberrhheingebiet

    OpenAIRE

    Richter, Dr. Toralf

    2006-01-01

    Die grenzübergreifende REGIO Südlicher Oberrhein wird durch die Regionen Elsass, Nordwestschweiz und Südbaden definiert. Die REGIO besitzt mit den Städten Basel, Mulhouse, Colmar, Freiburg, Lörrach bedeutende urbane Zentren, die gleichzeitig wichtige heimische Absatzmärkte für die regionale Landwirtschaft darstellen. Die Erschliessung und Verteidigung der heimischen Märkte kann langfristig aber nur durch die enge Verzahnung zwischen landwirtschaftlicher Erzeugung und Verbrauch in einer Region...

  16. Renewable liquid fuels from biomass containing lignocellulose; Regenerative Fluessigkraftstoffe aus Lignocellulose haltiger Biomasse

    Energy Technology Data Exchange (ETDEWEB)

    Schieder, D.; Witzelsperger, J. [TU Muenchen (Germany). Lehrstuhl fuer Technologie Biogener Rohstoffe; Prechtl, S. [ATZ Entwicklungszentrum, Sulzbach-Rosenberg (Germany)

    2005-07-01

    The authors review the production processes of liquid fuels from lignocellulose, current research programs and developments. The two principal routes to biofuels are thermochemical processes, like pyrolysis and gasification, and fermentation. One produces pyrolytic oils and gases, the other bio-ethanol. Since energy efficiency of large-scale plants is not yet good enough, small-scale dispersed fuel production in the agricultural areas can be profitable. (uke)

  17. Demographische Diskurse und Politiken aus Geschlechterperspektive

    Directory of Open Access Journals (Sweden)

    Diana Auth

    2007-07-01

    Full Text Available Der von Peter A. Berger und Heike Kahlert herausgegebene Sammelband umfasst Analysen, die sich aus Geschlechterperspektive mit dem demographischen Wandel im nationalen und internationalen Kontext beschäftigen. Durch seine ideologie- und herrschaftskritischen sowie empirisch fundierten Beiträge zum demographischen Wandel trägt das Buch zur Versachlichung der medial wie wissenschaftlich aufgeheizten Debatte bei. Die Autor/-innen widersprechen allesamt der Tendenz, soziale Probleme zu demographisieren, und fordern stattdessen eine stärkere Historisierung, Kontextualisierung und eine geschlechtssensible Analyse und Interpretation demographischer Entwicklungen.

  18. AUS98 - The 1998 version of the AUS modular neutronic code system

    Energy Technology Data Exchange (ETDEWEB)

    Robinson, G.S.; Harrington, B.V

    1998-07-01

    AUS is a neutronics code system which may be used for calculations of a wide range of fission reactors, fusion blankets and other neutron applications. The present version, AUS98, has a nuclear cross section library based on ENDF/B-VI and includes modules which provide for reactor lattice calculations, one-dimensional transport calculations, multi-dimensional diffusion calculations, cell and whole reactor burnup calculations, and flexible editing of results. Calculations of multi-region resonance shielding, coupled neutron and photon transport, energy deposition, fission product inventory and neutron diffusion are combined within the one code system. The major changes from the previous AUS publications are the inclusion of a cross-section library based on ENDF/B-VI, the addition of the MICBURN module for controlling whole reactor burnup calculations, and changes to the system as a consequence of moving from IBM main-frame computers to UNIX workstations This report gives details of all system aspects of AUS and all modules except the POW3D multi-dimensional diffusion module refs., tabs.

  19. Reet Aus - egoismiülikooli õppejõud / Reet Aus ; intervjueerinud Tanel Veenre

    Index Scriptorium Estoniae

    Aus, Reet, 1974-

    2009-01-01

    Moekunstnik Reet Aus osalemisest oma kollektsiooniga Londoni moenädala raames toimunud näitusel "Estethica", rohelisest disainist, tööst teatrikunstnikuna, oma kaubamärgist ReUse, moekunsti eelistest ja puudustest, ilust, endast, majanduskriisist, linnastumisest

  20. Ueber die Coleopteren-Gattung Dendrodipnis, Woll. aus Sumatra

    NARCIS (Netherlands)

    Reitter, Edm.

    1886-01-01

    Die Gattung Dendrodipnis wurde in 1873 von Wollaston in »The Entomologist’s Monthly Magazine”, vol. X, pag. 33, für eine Art aus Japan aufgestellt. Eine zweite Art beschrieb ich in 1881 in den »Mittheilungen des Münchener Entomologischen Vereins,” Jahrg. V, pag. 140, aus Sumatra. Auf der Insel Sumat

  1. Risiko Energiewende Wege aus der Sackgasse

    CERN Document Server

    Kleinknecht, Konrad

    2015-01-01

    Der Ausstieg aus der Nutzung der Kernenergie in Deutschland wurde im Sommer 2011 im Eiltempo beschlossen. Jetzt zeigt sich, dass es keinen realistischen Plan für den Umbau der Energieversorgung in der vorgesehenen Frist von zehn Jahren gibt. Für die Umstellung unserer gesamten Stromversorgung und damit unserer Wirtschaft ist der Zeitraum zu kurz. Es fehlt eine belastbare empirische Begründung, die Fragen der Versorgungssicherheit, der Finanzierbarkeit, der Auswirkungen auf die wirtschaftliche Entwicklung und die soziale Gerechtigkeit behandeln müsste. Somit droht diese Wende an ihren Widersprüchen zu scheitern. Konrad Kleinknecht versucht in seinem Buch, die Probleme zu benennen und Antworten zu finden. Für ihn stellen sich die folgenden Fragen: Welche Möglichkeit haben wir, mit Windkraft und Solarenergie einen Teil der Stromversorgung zu ersetzen? Welche Stromquellen bieten gesicherte Leistung? Können wir auf Kohlekraftwerke verzichten? Brauchen wir neue Stromtrassen? Wie lässt sich Strom speichern?...

  2. Sandwichelemente mit Deckschichten aus Hochleistungsbeton und einem Kern aus extrudiertem Polystyrol

    OpenAIRE

    Müller, Frank

    2015-01-01

    Sandwichelemente vereinen aufgrund des gezielten Einsatzes verschiedener Materialien und deren schichtartigen Aufbaus sehr gute Dämmeigenschaften und ein geringes Eigengewicht mit hoher Tragfähigkeit und Biegesteifigkeit. Sie werden daher seit Beginn der 1960er-Jahre sowohl im Metallleichtbau als auch im Stahlbetonmassivbau vielfältig eingesetzt. Im Rahmen der vorliegenden Arbeit wurden Sandwichelemente mit Deckschichten aus einem mikro- oder auch textilbewehrtem Hochleistungsbeton und einem ...

  3. Solarzellen aus Folien-Silizium: Neue Materialien der Photovoltaik

    Science.gov (United States)

    Hahn, Giso

    2004-01-01

    Die Photovoltaik wird auf absehbare Zeit vor allem kristallines Silizium als Baumaterial nutzen, mit Tendenz zu billigeren, multikristallinen Wafern. Allerdings werden heutige Wafer aus großen Silizium-Blöcken gesägt, was viel Material verpulvert. Das treibt den Anteil des Wafers an den Gesamtkosten des Solarmoduls auf 50% hoch. Folien-Silizium nutzt dagegen durch eine andere Herstellungstechnik das Material viel besser aus und senkt so die Waferkosten erheblich. Im Wirkungsgrad können Solarzellen aus Folien-Silizium schon fast mit herkömmlichen Zellen konkurrieren. Ein weiterer Vorteil von Folien-Silizium: Es kann relativ problemlos in die Produktionslinien heutiger Solarzellen aus kristallinem Silizium eingegliedert werden. Allerdings sind die attraktivsten Herstellungsverfahren noch nicht serienreif.

  4. Brombeeren aus den östlichen Niederlanden und angrenzenden Gebieten

    OpenAIRE

    Beek, Abraham van de

    2012-01-01

    In diesem Artikel werden mehrere neue Arten aus dem Genus Rubus L. aus dem deutsch-niederländischen Grenzgebiet beschrieben, sowie ein neuer Name für R. laetus Beek veröffentlicht. In this article some new Rubus species from the German-Dutch border region are described.R. laetus Linton is stated as the correct name for the taxon, until now called R. lintonii Focke ex Bab., and a new name is given for R. laetus Beek.

  5. Biomass boilers

    OpenAIRE

    Nahodil, Jiří

    2011-01-01

    Bachelor’s thesis deals with the use of biomass for heating houses and apartment houses. The first part is dedicated to biomass. Here are mentioned the possibility of energy recovery, treatment and transformation of biomass into a form suitable for burning, its properties and combustion process itself. The second part is devoted to biomass boilers, their separation and description. The last section compares the specific biomass boiler with a boiler to natural gas, particularly from an economi...

  6. ESWL aus der Sicht des Osteologen

    Directory of Open Access Journals (Sweden)

    Tischer T

    2004-01-01

    Full Text Available In der Urologie hat die Zertrümmerung von schmerzhaften Nierensteinen mittels extrakorporaler Stoßwellen die nicht-invasive Therapie von Nierensteinen revolutioniert. Dieses erfolgversprechende Konzept wurde vor über 15 Jahren in der Orthopädie aufgegriffen. Dabei wurde versucht, die verzögerte Knochenbruchheilung durch Stimulation der Knochenenden mit Hilfe fokussierter extrakorporaler Stoßwellen zu beschleunigen. Im folgenden wurde dieses Verfahren erfolgreich zur Behandlung von Knochenbruchheilungsstörungen, der Tendinitis calcarea, der Epicondylitis radialis humeri und der Fasciitis plantaris eingesetzt. Dabei ist – anders als bei der Nierensteinzertrümmerung – nicht die Zerstörung von Hartgewebe für den Wirkmechanismus verantwortlich. Lange Zeit waren die Kenntnisse sowohl über die Wirkmechanismen extrakorporaler Stoßwellen am Knochen, als auch über mögliche unerwünschte Nebenwirkungen nur eingeschränkt verfügbar. In den letzten Jahren sind jedoch viele neue Studien publiziert worden. Die vorliegende Arbeit faßt den entsprechenden gegenwärtigen Kenntnisstand über die Wirkung extrakorporaler Stoßwellen auf den Knochen aus tier- und zellkulturexperimentellen Grundlagenuntersuchungen zusammen. Insbesondere in bezug auf mögliche unerwünschte Nebenwirkungen der ESWT haben die bisher durchgeführten Untersuchungen wertvolle Hinweise ergeben. Darüber hinaus konnten in jüngster Zeit erste Ergebnisse bezüglich der molekularen Wirkweise extrakorporaler Stoßwellen am Stütz- und Bewegungsapparat vorgelegt werden, die ein komplexes Bild der tatsächlichen Vorgänge erahnen lassen. Durch eine Intensivierung der tierexperimentellen Grundlagenforschung zur ESWT wird es möglich sein, in naher Zukunft eine breit abgesicherte, experimentell-wissenschaftliche Grundlage zum Einsatz extrakorporaler Stoßwellen am Stütz- und Bewegungsapparat zu erarbeiten.

  7. Short-rotation coppices. State of the realizability, organisation and a model for the evaluation of the production and supply of rapidly growing wood from short-rotation coppices als a biofuel for biomass-fuelled heating power stations in Bavaria; Kurzumtriebsplantagen. Stand der Umsetzbarkeit, Organisation und ein Modell zur oekonomischen Bewertung von Produktion und Bereitstellung schnell wachsenden Holzes aus Kurzumtriebsplantagen als biogener Festbrennstoff fuer Biomasse(heiz)kraftwerke in Bayern

    Energy Technology Data Exchange (ETDEWEB)

    Paschlau, Helmut F.

    2011-04-07

    The study examines most aspects of Short-rotation Coppice Crops (SRC), mainly from willows (Salix sp.) and poplars (Populus sp.), for energetic use in big biomass powerstations in Bavaria (southern Germany). In addition to the compilation of framework conditions concerning environmental and agrarian politics as well as legal issues, every link in the process chain of SRC will be considered - from planting to harvesting, treatment of the wood chips and Just-in-time delivery to the powerplant - followed by an evaluation of SRC in ecological terms. The basic aim of this study is to evaluate every single link with regard to organisational und economic issues, analysis of relevant markets and to develop a comprehensive calculation model for the amount of annuities of the whole process chain.

  8. Biomass pretreatment

    Science.gov (United States)

    Hennessey, Susan Marie; Friend, Julie; Elander, Richard T; Tucker, III, Melvin P

    2013-05-21

    A method is provided for producing an improved pretreated biomass product for use in saccharification followed by fermentation to produce a target chemical that includes removal of saccharification and or fermentation inhibitors from the pretreated biomass product. Specifically, the pretreated biomass product derived from using the present method has fewer inhibitors of saccharification and/or fermentation without a loss in sugar content.

  9. A guide to the AUS modular neutronics code system

    International Nuclear Information System (INIS)

    A general description is given of the AUS modular neutronics code system, which may be used for calculations of a very wide range of fission reactors, fusion blankets and other neutron applications. The present system has cross-section libraries derived from ENDF/B-IV and includes modules which provide for lattice calculations, one-dimensional transport calculations, and one, two, and three-dimensional diffusion calculations, burnup calculations and the flexible editing of results. Details of all system aspects of AUS are provided but the major individual modules are only outlined. Sufficient information is given to enable other modules to be added to the system

  10. Cyclische Diazastannylene. - XXVI : Funktionalisierte Cyclodisilazane aus cyclischen Diazanstannylenen

    OpenAIRE

    Veith, Michael; Lisowsky, Richard

    1988-01-01

    1,3-Di-tert-butyl-2,2-dihalogen-4,4-dimethylcyclodisilazane Substituent Chlor (3), Brom (4), Iod (5)) lassen sich aus dem 1,3-Di-tert-butyl-2,2-dimethyl-1,2,3,2,42-diazasilastannetidin (1) durch Umsetzung mit SiCl4, SiBr4 oder SiI4 erhalten. Je leichter das Halogen im Tertahalogenid ist, um so drastischere Reaktionsbedingungen müssen gewählt werden. Aus 4 ist durch Umsetzung mit Natriumazid auch das entsprechende Si, Si-Diazid (9) zugänglich. Alle neu synthetisierten Verbindungen 3, 4, 5 und ...

  11. Solvatation eines Coumarinfarbstoffes in Gemischen aus Alkanen und Alkoholen

    OpenAIRE

    Cichos, Frank

    1998-01-01

    Diese Arbeit charakterisiert die Solvatation des organischen Farbstoffes Coumarin 153 in Gemischen aus jeweils einem Alkan und einem Alkohol. Dabei werden Methoden der statischen und zeitaufgeloesten optischen Spektroskopie sowie klassische molekulardynamische Simulationen fuer die Untersuchungen angewendet. Die experimentellen Ergebnisse zeigen, dass der Farbstoff im Gemisch selektiv durch den Alkohol solvatisiert ist. Die Staerke dieser Solvatation ist für den ...

  12. Biomass energy

    International Nuclear Information System (INIS)

    Bioenergy systems can provide an energy supply that is environmentally sound and sustainable, although, like all energy systems, they have an environmental impact. The impact often depends more on the way the whole system is managed than on the fuel or on the conversion technology. The authors first describe traditional biomass systems: combustion and deforestation; health impact; charcoal conversion; and agricultural residues. A discussion of modern biomass systems follows: biogas; producer gas; alcohol fuels; modern wood fuel resources; and modern biomass combustion. The issue of bioenergy and the environment (land use; air pollution; water; socioeconomic impacts) and a discussion of sustainable bioenergy use complete the paper. 53 refs., 9 figs., 14 tabs

  13. Prozessentwicklung zur biotechnologischen Produktion von Acrolein aus Nebenprodukten der Bioethanolherstellung

    OpenAIRE

    Oehmke, Sebastian

    2013-01-01

    Da fossile Quellen endlich sind, werden Chemikalien aus nachwachsenden Rohstoffen immer interessanter für die Forschung und Industrie. Zu den vielversprechenden Plattformchemikalien gehört das Stoffpaar 3-Hydroxypropionaldehyd/ Acrolein. Jedoch sind bisherige Ansätze für eine wirtschaftliche Produktion von 3-Hydroxypropionaldehyd/ Acrolein im industriellen Maßstab nicht ausreichend. Deshalb wurde in dieser Arbeit geprüft, inwieweit sich Schlempe, ein glycerinhaltiges Nebenprodukt der Bioethan...

  14. Isolierung und Typisierung von Salmonellen aus Trinkwasserquellen in Benin, Westafrika

    OpenAIRE

    Uesbeck, Alexandra

    2009-01-01

    Die Situation der Trinkwasserversorgung im ländlichen oberen Ouémé Einzugsgebiet in Benin, Westafrika, ist dadurch gekennzeichnet, dass viele Menschen keinen Zugang zu sicherem Trinkwasser haben. Am häufigsten stehen offene traditionelle und moderne Brunnen, die 90 % aller Wasserquellen ausmachen, zur Trinkwasserversorgung zur Verfügung. Bohrlöcher mit geschlossenen Pumpenanlagen, die bakteriologisch unbedenkliches Wasser liefern, machen nur 6 % aller Wasserstellen aus. Aufgrund unzureichende...

  15. Electronic Commerce in der Schweiz: Lehren aus Fallbeispielen

    OpenAIRE

    Harabi, Najib; Hespeler, Frank

    2001-01-01

    Das Ziel des folgenden Papiers besteht darin, erstens die Ergebnisse der Fallstudien im Bereich Electronic Commerce in der Schweiz zusammenzufassen und zweitens, wichtige Lehren aus diesen „Case studies“ zu ziehen. Folgende wichtigste Lehren zur optimalen Praxis von E-Commerce lassen sich zusammentragen: • Strategische Partnerschaften traditioneller Unternehmen mit Firmen des ICT-Sektors erleichtern den Markteinstieg und können dazu beitragen, Investitionsrisiken durch Teilen der Kosten für d...

  16. Electronic Commerce in der Schweiz: Lehren aus Fallbeispielen

    OpenAIRE

    Harabi, Najib; Hespeler, Frank

    2001-01-01

    Das Ziel des folgenden Papiers besteht darin, erstens die Ergebnisse der Fallstudien im Bereich Electronic Commerce in der Schweiz zusammenzufassen und zweitens, wichtige Lehren aus diesen „Case studies“ zu ziehen. Folgende wichtigste Lehren zur optimalen Praxis von E-Commerce lassen sich zusammentragen: • Strategische Partnerschaften traditioneller Unternehmen mit Firmen des ICT-Sektors erleichtern den Markteinstieg und können dazu beitragen, Investitionsrisiken durch Teilen der Kosten f...

  17. Optimierung von driftbestimmten Solarzellen aus amorphem und nanokristallinem Silizium

    OpenAIRE

    Brummack, Hanna

    2000-01-01

    Die vorliegende Arbeit beschäftigt sich mit der Herstellung, Optimierung und Untersuchung von Dünnschichtsolarzellen aus amorphem und nanokristallinem Silizium, wobei Motivation und Perspektive die Kombination beider Materialien in einer Tandemstruktur mit möglichst hohem stabilisierten Wirkungsgrad ist. Im Bereich des amorphen Siliziums liegt der Schwerpunkt auf der Erhöhung des stabilisierten Wirkungsgrads durch Optimierung sowohl der Herstellparameter als auch der Schichtstruktur der S...

  18. Text Mining: Wissensgewinnung aus natürlichsprachigen Dokumenten

    OpenAIRE

    Witte, René; Mülle, Jutta

    2006-01-01

    Das noch recht junge Forschungsgebiet "Text Mining" umfaßt eine Verbindung von Verfahren der Sprachverarbeitung mit Datenbank- und Informationssystemtechnologien. Es entstand aus der Beobachtung, dass ca. 85% aller Datenbankinhalte nur in unstrukturierter Form vorliegen, so dass sich die Techniken des klassischen Data Mining zur Wissensgewinnung nicht anwenden lassen. Beispiele für solche Daten sind Volltextdatenbanken mit Büchern, Unternehmenswebseiten, Archive mit Zeit...

  19. Organisationale Kosten-Nutzen-Perspektiven aus Gender-Sicht

    OpenAIRE

    Hanappi-Egger, Edeltraud; Hofmann, Roswitha

    2005-01-01

    Die Hierarchie der Geschlechterverhältnisse ist konstitutives Merkmal von Organisationen und tritt insbesondere dann in den Vordergrund, wenn es um die Abwägung von Kosten und Nutzen in Entscheidungssituationen geht. Aus Sicht der Autorinnen kann es daher, im Sinne der Beseitigung existierender Geschlechterhierarchien, ausgesprochen "nützlich" sein, die Basisannahmen solcher Kosten-Nutzen-Überlegungen und deren Rolle im ökonomischen und gesellschaftspolitischen Diskurs kritisch zu betrachten....

  20. Systematic radiological survey distinguishing contaminated from non-contaminated agricultural areas in the Korma district; Systematische Differenzierung kontaminierter und nicht kontaminierter landwirtschaftlicher Nutzflaechen in der Region Korma

    Energy Technology Data Exchange (ETDEWEB)

    Hille, R.; Dederichs, H. [Forschungszentrum Juelich GmbH (Germany)

    1999-08-01

    Erklaerung fuer den extrem starken Anstieg der Dosis der Personengruppe 'Vorschulkinder' sein. Sehr stark macht sich auch die wirtschaftliche Lage bemerkbar. Die Bevoelkerung ist verstaerkt darauf angewiesen, auch Nahrungsmittel aus dem Wald zu verwenden. Die Frage zeigt sich in einer Erhoehung der inkorporierten Aktivitaet. Die externe Belastung sinkt aufgrund des physikalischen Zerfalls und der fortgesetzten vertikalen Migration in tiefere Bodenschichten. Gegenlaeufig ist jedoch die interne Akkumulation von Caesium in der Bevoelkerung. Die Konsequenz ist, dass die interne Strahlenbelastung entgegen der allgemeinen Erwartung auch in den Doerfern, die nicht als waldnah zu bezeichnen sind, den dominanten Dosisbeitrag liefert. (orig.)

  1. Biomass recalcitrance

    DEFF Research Database (Denmark)

    Felby, Claus

    2009-01-01

    , to resistance to enzymatic deconstruction, with the aim of discovering new cost-effective technologies for biorefineries. It contains chapters on topics extending from the highest levels of biorefinery design and biomass life-cycle analysis, to detailed aspects of plant cell wall structure, chemical treatments...... of plant cell wall structure, chemical treatments, enzymatic hydrolysis, and product fermentation options. "Biomass Recalcitrance" is essential reading for researchers, process chemists and engineers working in biomass conversion, also plant scientists working in cell wall biology and plant biotechnology.......Alternative and renewable fuels derived from lignocellulosic biomass offer a promising alternative to conventional energy sources, and provide energy security, economic growth, and environmental benefits. However, plant cell walls naturally resist decomposition from microbes and enzymes...

  2. Biomass [updated

    Energy Technology Data Exchange (ETDEWEB)

    Turhollow Jr, Anthony F [ORNL

    2016-01-01

    Biomass resources and conversion technologies are diverse. Substantial biomass resources exist including woody crops, herbaceous perennials and annuals, forest resources, agricultural residues, and algae. Conversion processes available include fermentation, gasification, pyrolysis, anaerobic digestion, combustion, and transesterification. Bioderived products include liquid fuels (e.g. ethanol, biodiesel, and gasoline and diesel substitutes), gases, electricity, biochemical, and wood pellets. At present the major sources of biomass-derived liquid fuels are from first generation biofuels; ethanol from maize and sugar cane (89 billion L in 2013) and biodiesel from vegetable oils and fats (24 billion liters in 2011). For other than traditional uses, policy in the forms of mandates, targets, subsidies, and greenhouse gas emission targets has largely been driving biomass utilization. Second generation biofuels have been slow to take off.

  3. Biomass power; Biomasse-Energie

    Energy Technology Data Exchange (ETDEWEB)

    Woergetter, M.

    2003-07-01

    The author reports about use of biomass in Austria and Bavaria: power generation, production of biodiesel, bioethanol, energy efficiency of small biomass furnaces. (uke) [German] Bioenergie wird von breiten Kreisen als wichtiger Ansatz in Richtung einer nachhaltigen Entwicklung in Europa gesehen. Die Herausforderung liegt dabei im neuen Herangehen an Entscheidungen; Dimensionen der Wirtschaft, der Umwelt und der Gesellschaft sind dabei zu beruecksichtigen. Bioenergie ist somit keine reine Frage der Umwelt, sondern zielt auf den Umbau unseres Systems in Richtung Nachhaltigkeit. (orig.)

  4. Biomass potential

    Energy Technology Data Exchange (ETDEWEB)

    Asplund, D. [VTT Energy, Espoo (Finland)

    1996-12-31

    Biomass resources of the industrialised countries are enormous, if only a small fraction of set-aside fields were used for energy crops. Forest resources could also be utilised more efficiently than at present for large-scale energy production. The energy content of the annual net growth of the total wood biomass is estimated to be 180 million toe in Europe without the former USSR, and about 50 million toe of that in the EC area, in 1990. Presently, the harvesting methods of forest biomass for energy production are not yet generally competitive. Among the most promising methods are integrated harvesting methods, which supply both raw material to the industry and wood fuel for energy production. Several new methods for separate harvesting of energy wood are being developed in many countries. (orig.)

  5. Biomass IGCC

    Energy Technology Data Exchange (ETDEWEB)

    Salo, K.; Keraenen, H. [Enviropower Inc., Espoo (Finland)

    1996-12-31

    Enviropower Inc. is developing a modern power plant concept based on pressurised fluidized-bed gasification and gas turbine combined cycle (IGCC). The process is capable of maximising the electricity production with a variety of solid fuels - different biomass and coal types - mixed or separately. The development work is conducted on many levels. These and demonstration efforts are highlighted in this article. The feasibility of a pressurised gasification based processes compared to competing technologies in different applications is discussed. The potential of power production from biomass is also reviewed. (orig.) 4 refs.

  6. Bioaktivitäten von Wertstoffen aus Saccharomyces Hefen

    OpenAIRE

    Jährig, Silke Christiane

    2007-01-01

    In der vorliegenden Arbeit wurden die antioxidative Aktivität sowie die immunmodulierende Kapazität von Zellwänden und Zellwandbestandteilen der Bierhefe Saccharomyces cerevisiae untersucht. Die Zellwände von Saccharomyces-Hefen bestehen aus (1→3),(1→6)-β-D-Glucan, Mannanen, Proteinen und Lipiden. Als potentieller Immunmodulator ist vor allem das (1→3),(1→6)-β-D-Glucan von Interesse. Vor kurzem konnte für dieses Glucan zusätzlich eine antioxidative Wirkung nachgewiesen werden [KOGAN et al., 2...

  7. Energy from waste. Vol. 9; Energie aus Abfall. Bd. 9

    Energy Technology Data Exchange (ETDEWEB)

    Thome-Kozmiensky, Karl J.; Beckmann, Michael

    2012-11-01

    This book reports on a further optimization of the waste incineration from different perspectives. Under this aspect, a lot of contributions to the following aspects are presented: energetic waste utilization, fires in silos and fire prevention, energy efficiency, process regulation, steam generators, materials for waste incinerators, exhaust gas treatment, production of substitute fuels. [German] Dieses Buch, welches sich mit der Optimierung der Abfallverbrennung aus verschiedenen Blickwinkeln befasst, enthaelt Beitraege zu folgenden Schwerpunktthemen: 1. Energetische Abfallverwertung; 2. Bunkerbraende und Brandvermeidung; 3. Energieeffizienz; 4. Prozessregelung; 5. Dampferzeuger; 6. Werkstoffe fuer Abfallverbrennungsanlagen; 7. Abgasbehandlung; 8. Herstellung von Ersatzbrennstoffen. Alle 46 Beitraege wurden fuer die Datenbank ENERGY aufgenommen.

  8. Spektakel Spitzensport : der Moloch aus Stars, Rekorden, Doping, Medienwahn, Sponsorenmacht

    OpenAIRE

    Knobbe, Thorsten

    2006-01-01

    Die Arbeit analysiert das Zusammenspiel des sogenannten ‚magischen Dreiecks‘ aus Sport- Wirtschaft-Medien. Um die Jahrtausendwende wird die professionelle Leibesertüchtigung von zahlreichen Skandalen, Todesfällen und Krisen bis hin zum Super-GAU der Tour de France 1998 geschüttelt. Doch der moderne Spitzensport – längst Mediensport, Mega-Show, ja Kulturgut – ist so präsent wie nie zuvor. Wo also steht der Olympische Geist des ‚ Citius – Altius – Fortius ‘ heute? Welche Sportrealitä...

  9. Biomass shock pretreatment

    Energy Technology Data Exchange (ETDEWEB)

    Holtzapple, Mark T.; Madison, Maxine Jones; Ramirez, Rocio Sierra; Deimund, Mark A.; Falls, Matthew; Dunkelman, John J.

    2014-07-01

    Methods and apparatus for treating biomass that may include introducing a biomass to a chamber; exposing the biomass in the chamber to a shock event to produce a shocked biomass; and transferring the shocked biomass from the chamber. In some aspects, the method may include pretreating the biomass with a chemical before introducing the biomass to the chamber and/or after transferring shocked biomass from the chamber.

  10. Electrifying biomass

    International Nuclear Information System (INIS)

    British Columbia's (BC) energy plan was outlined in this PowerPoint presentation. BC Hydro is the third largest electric utility in Canada with a generating capacity of 11,000 MW, 90 per cent of which is hydro generation. Various independent power project (IPP) biomass technologies were outlined, including details of biogas, wood residue and municipal solid waste facilities. An outline of BC Hydro's overall supply mix was presented, along with details of the IPP supply mix. It was suggested that the cancellation of the Duke Point power project has driven growth in the renewable energy sector. A chart of potential energy contribution by resource type was presented, as well as unit energy cost ranges. Resources included small and large hydro; demand side management; resource smart natural gas; natural gas; coal; wind; geothermal; biomass; wave; and tidal. The acquisition process was reviewed. Details of calls for tenders were presented, and issues concerning bidder responsibility and self-selection were examined. It was observed that wood residue presents a firm source of electricity that is generally local, and has support from the public. In addition, permits for wood residue energy conversion are readily available. However, size limitations, fuel risks, and issues concerning site control may prove to be significant challenges. It was concluded that the success of biomass energy development will depend on adequate access and competitive pricing. tabs., figs

  11. Bemerkenswerte Zweiflügler aus Niedersachsen und Bremen (Insecta: Diptera) – 3. Teil

    OpenAIRE

    Stuke, Jens-Hermann

    2010-01-01

    Neue Dipteren-Funde von 29 Arten aus den Familien Bombyliidae, Canacidae, Carnidae, Chyromyidae, Milichiidae, Piophilidae, Rhagionidae, Sciomyzidae, Stratiomyidae und Ulidiidae werden aus Niedersachsen und Bremen mitgeteilt. 13 Arten werden erstmals für das Untersuchungsgebiet gemeldet, Meoneura prima (BECKER, 1893) und Meoneura anceps FREY, 1935 sind neu für Deutschland.

  12. Milax Clerxi nov. spec., eine neue Nacktschnecke aus Südjugoslawien (Gastropoda, Pulmonata, Milacidae)

    NARCIS (Netherlands)

    Rähle, W.

    1977-01-01

    Durch das Entgegenkommen von Herrn Dr. C. O. van Regteren Altena, Leiden, erhielt der Verfasser eine Serie juveniler, fast erwachsener und erwachsener Nacktschnecken aus der Gattung Milax zur Bearbeitung, welche aus der Umgebung der Stadt Ohrid in Mazedonien stammen und dort im Sommer 1974 von Drs.

  13. Energy from waste. Vol. 6; Energie aus Abfall. Bd. 6

    Energy Technology Data Exchange (ETDEWEB)

    Thome-Kozmiensky, Karl J.; Beckmann, Michael

    2009-07-01

    This book deals with waste incineration from different perspectives. It contains articles on the following subtopics: 1. Strategies; 2. Combustion of household waste and substitute fuels; 3. District heating and district cooling through household waste combustion; 4. Emission control; 5. Corrosion diagnosis; 6. Corrosion control through protective coatings; 7. Operator strategies for minimising corrosion; 8. Hazardous waste incineration. All 34 articles have been abstracted for the ENERGY database. [German] Dieses Buch, welches sich mit der Optimierung der Abfallverbrennung aus verschiedenen Blickwinkeln befasst, enthaelt Beitraege zu folgenden Schwerpunktthemen: 1. Strategien; 2. Verbrennung von Siedlungsabfaellen und Ersatzbrennstoffen; 3. Fernwaerme und Fernkaelte durch Siedlungsabfallverbrennung; 4. Immissionsschutz; 5. Korrosionsdiagnose; 6. Korrosionsminderung durch Schutzschichten; 7. Strategien der Betreiber fuer Korrosionsminderung; 8. Sonderabfallverbrennung. Alle 34 Beitraege wurden fuer die Datenbank ENERGY aufgenommen.

  14. Vollautomatische Segmentierung der Prostata aus 3D-Ultraschallbildern

    Science.gov (United States)

    Heimann, Tobias; Simpfendörfer, Tobias; Baumhauer, Matthias; Meinzer, Hans-Peter

    Diese Arbeit beschreibt ein modellbasiertes Verfahren zur Segmentierung der Prostata aus 3D-Ultraschalldaten. Kern der Methode ist ein statistisches Formmodell, das auf Beispieldaten der Prostata trainiert wird. Erster Schritt der Segmentierung ist ein evolutionärer Algorithmus, mit dem das Modell grob im zu segmentierenden Bild positioniert wird. Für die darauf folgende lokale Suche wurden mehrere Varianten des Algorithmus evaluiert, unter anderem Ausreißer-Unterdrückung, freie Deformation und Gewichtung der verwendeten Erscheinungsmodelle nach ihrer Zuverlässigkeit. Alle Varianten wurden auf 35 Ultraschallbildern getestet und mit manuellen Referenzsegmentierungen verglichen. Die beste Variante erreichte eine durchschnittliche Oberflächenabweichung von 1.1 mm.

  15. The economic dilemma of big bioenergy projects: Small is beautiful; Ueber das wirtschaftliche Dilemma grosser Bioenergie-Projekte: vom Klotzen und Kleckern

    Energy Technology Data Exchange (ETDEWEB)

    Dobelmann, J.K.

    2001-11-01

    Biomass is a subject of high current awareness among farmers, waste managers, power plant operators, investors and project managers. The boundary conditions are good: The Renewable Energy Act specifies reimbursement while the Biomass Ordinance goes into details of implementation. In spite of this, progress is not as fast as expected. The contribution explains why. [German] Die Biomassenutzung steht derzeit hoch im Kurs. Angefangen von Landwirten, die neue Maerkte wittern, ueber Abfallentsorger, die Chancen auf die schnelle Mark mit gesetzlich aufgewerteten Abfaellen sehen, bis zu Kraftwerksbetreibern, die auf einen neuen Brennstoff zu guenstigen Konditionen hoffen. Aber auch Investoren und Projektentwickler elektrisiert der Gedanke, Abfall aus landwirtschaftlicher Produktion oder der Lebensmittelerzeugung Gewinn bringend zur Energieerzeugung einzusetzen. Die Rahmenbedingungen fuer die Nutzung von Biomasse sind gut: Das Erneuerbare-Energien-Gesetz regelt die Stromverguetung und die Biomasse-Verordnung die Ausfuehrungsdetails. Dennoch kam es auf dem Markt fuer grosse Bioenergieanlagen bisher nicht zu dem erhofften Aufschwung. Der folgende Beitrag erlaeutert warum. (orig.)

  16. Biomass torrefaction mill

    Science.gov (United States)

    Sprouse, Kenneth M.

    2016-05-17

    A biomass torrefaction system includes a mill which receives a raw biomass feedstock and operates at temperatures above 400 F (204 C) to generate a dusty flue gas which contains a milled biomass product.

  17. Energy from Biomass for Conversion of Biomass

    Science.gov (United States)

    Abolins, J.; Gravitis, J.

    2009-01-01

    Along with estimates of minimum energy required by steam explosion pre-treatment of biomass some general problems concerning biomass conversion into chemicals, materials, and fuels are discussed. The energy necessary for processing biomass by steam explosion auto-hydrolysis is compared with the heat content of wood and calculated in terms of the amount of saturated steam consumed per unit mass of the dry content of wood biomass. The fraction of processed biomass available for conversion after steam explosion pre-treatment is presented as function of the amount of steam consumed per unit mass of the dry content of wood. The estimates based on a simple model of energy flows show the energy required by steam explosion pre-treatment of biomass being within 10% of the heat content of biomass - a realistic amount demonstrating that energy for the process can be supplied from a reasonable proportion of biomass used as the source of energy for steam explosion pre-treatment.

  18. Investigation for a chemical and physical description of different types of biomass; Untersuchung zur chemischen und physikalischen Beschreibung verschiedener Biomassen

    Energy Technology Data Exchange (ETDEWEB)

    Stuelpnagel, R. [Kassel Univ. (Gesamthochschule), Witzenhausen (Germany). Inst. fuer Nutzpflanzenkunde

    1998-09-01

    If the same type of biomass is harvested at different times, preserved by different technques and then processed into fuel, the physical and chemical characteristics of the fuel will differ. After describing biomass fuel of the `wet line`, the author carried out investigations of lumpiness, bulk density and materials density of chopped materials in order to obtain a preliminary physical characterisation. Two samples of wood chips were characterized as well. The chemical description started with an analysis of nutrient content, acidity and concentrations of fermentation acids in the `wet line` biomass. (orig.) [Deutsch] Wird die gleiche Biomasse zu unterschiedlichen Zeitpunkten geerntet, auf verschiedenen Wegen konserviert und beim Feuchtgut mechanisch zu Brennstoff aufbereitet, so wird dies Einfluss auf die physikalischen und chemischen Charakteristika eines Brennstoffes nehmen. Nach einer ersten Beschreibung des Brennstoffes Biomasse aus der `Feuchtgutlinie` sollten durch Untersuchungen zur Stueckigkeit, Schuettdichte und Materialdichte von Haeckselgut aus beiden Verfahren eine erste physikalische Charakterisierung durchgefuehrt werden, in die auch zwei Proben von Holzhackschnitzeln einbezogen wurde. Mit der Analyse der Naehrstoffgehalte sowie der Aciditaet und der Gehalte an Gaersaeuren in den Biomassen aus der Feuchtgutlinie sollte die chemische Beschreibung begonnen werden. (orig.)

  19. Kooperative Normsetzung im Internet. Partizipationsbedingungen aus handlungstheoretischer Perspektive

    Directory of Open Access Journals (Sweden)

    Ulf Tranow

    2014-06-01

    Full Text Available Das Internet bietet die Möglichkeit, eine große Anzahl von Personen an Entscheidungen über verbindliche Normen zu beteiligen. Verfahren der ‚internetvermittelten kooperativen Normsetzung‘ (IKN bieten das Potential, in Organisationen oder in der Politik zu demokratischeren, ‚besseren‘ und legitimeren Entscheidungen zu kommen. Praxisanwendungen von Online-Beteiligungsverfahren zeigen allerdings, dass eine hinreichende Partizipationsbereitschaft nicht fraglos vorausgesetzt werden kann. In dem Beitrag wird das Partizipationsproblem aus handlungstheoretischer Perspektive untersucht. Die Ausgangsthese ist, dass eine IKN der Kollektivgutproblematik unterliegt. Eine erfolgreiche IKN verlangt, dass Personen zur Partizipation bereit sind, obwohl ihr Verhalten insignifikant ist. Mit Rückgriff auf die Theorie sozialer Rationalität (Lindenberg 2001 und unter Einbezug empirischer Studien werden mit einer expressiven, demonstrativen und normorientierten Partizipation drei Motivtypen identifiziert, die für eine Überwindung des Kollektivgutproblems relevant sein können. Diese drei Motive unterliegen jeweils bestimmten konstitutiven Bedingungen und Restriktionen, die ebenfalls diskutiert werden.

  20. Animal Welfare: eine empirische Analyse landwirtschaftlicher Frames

    OpenAIRE

    Deimel, Ingke; Franz, Annabell; SPILLER, Achim

    2012-01-01

    Nach den aktuellen Erkenntnissen der nutztierwissenschaftlichen Forschung rekurriert das Verständnis von Animal Welfare auf vier Kriterien: Haltungssystem, Management, Tiergesundheit und Tierverhalten (KEELING und KJ™RNES, 2009). Es ist jedoch unklar, inwieweit sich dieses Verständnis auch in der landwirtschaftlichen Praxis wiederfindet. In der vorliegenden empirischen Studie wird erstmals mit Hilfe einer Faktorenanalyse das Animal-Welfare-Verständnis konventioneller deutscher Schweinemäster ...

  1. Integration landwirtschaftlicher Funktionen in die Raumplanung

    OpenAIRE

    2005-01-01

    Der anhaltende Strukturwandel in der Landwirtschaft und die spezifische Problematik der Intensivtierhaltung werfen regionale Entwicklungs- und Planungsprobleme auf, die vor allem in Niedersachsen eine kontroverse Diskussion über den Einsatz steuernder Instrumente und die Rolle der Raumordnung und Bauleitplanung auslöste. Die LAG Nordwest der ARL nahm diese Diskussion zum Anlass, im Rahmen einer Arbeitgruppe praxisorientierte Handlungsempfehlungen für eine bessere Integration landwirtschaftlic...

  2. Untersuchungen zur Bestimmung der Übergreifungslängen textiler Bewehrungen aus Carbon in Textilbeton (TRC)

    OpenAIRE

    Lorenz, Enrico; Ortlepp, Regine

    2011-01-01

    Für das Funktionieren von Verstärkungsschichten aus Textilbeton ist eine sichere Kraftübertragung zwischen den einzelnen Verbundbaustoffen sicherzustellen. Aufgrund der sehr hohen Garnzugfestigkeiten sind besonders bei Verwendung textiler Bewehrungen aus Carbon sehr effektive Verstärkungen herstellbar. In Textilbetonbauteilen sind hierbei im Regelfall Übergreifungsstöße der textilen Bewehrungslagen nicht zu vermeiden. Der vorliegende Beitrag befasst sich daher mit der experimentellen und anal...

  3. Umgelenkte Lamellen aus kohlenstofffaserverstärktem Kunststoff als freistehende Spannglieder im Konstruktiven Ingenieurbau

    OpenAIRE

    Hwash, Mohamed

    2013-01-01

    Vor ca. 60 Jahren begann die Entwicklung der Faserverbundwerkstoffe (FVK). Bereits Anfang der fünfziger Jahre wurden die ersten Karosserieteile für die Corvette aus FVK produziert. Das erste Segelflugzeug wurde aus glasfaserverstärktem Kunststoff an der Universität Stuttgart gebaut. Zwischen 1956 und 1970 wurden ca. 70 unterschiedliche Kunststoffhaustypen entwickelt. Einige der einzigartigen Kunststoffhäuser, wie das Monsantohaus, Futuro, Rondo etc., stehen immer noch als Beweise für diese Ze...

  4. Phytochemische, pharmakologische und chemoökologische Untersuchungen zu Sesquiterpenlactonen aus Kamille, Schafgarbe und Arnika

    OpenAIRE

    Flemming, Marcel

    2014-01-01

    E.1 Phytochemische und pharmakologische Untersuchungen von Proazulenen aus Kamille und Schafgarbe Im Teil B dieser Arbeit konnte eine Isolierung des Proazulens Matricin aus der Kamille (Matricaria recutita L.) durch rein chromatographische Methoden entwickelt werden. Mit Hilfe von drei Flash-Chromatographieschritten an Kieselgel, Aluminiumoxid und RP-18-Kieselgel konnte Matricin einer Reinheit von (98,6%, HPLC) und einer Ausbeute von 0,016% isoliert werden. Außerdem wurde eine Methode zur ...

  5. Energy from waste. Vol. 5; Energie aus Abfall. Bd. 5

    Energy Technology Data Exchange (ETDEWEB)

    Thome-Kozmiensky, Karl J.; Beckmann, Michael

    2008-07-01

    The fifth volume to the topic 'Energy from waste' contains the following contributions: (1) Combustion of mixed and recovered wastes - acceptance in the Federal Republic of Germany (Karl J. Thome-Kozmiensky); (2) Strategies for energetic use of biomass (M. Beckmann, M. Klemm); (3) Conversion from corporate strategies to an optimized power supply under consideration of the Renewable Energy Resources Act - five years operational experiences (J. Guenther); (4) Optimization of mechanical-biological waste treatment plants (K. Ketelsen); (5) Importance of a rapid test for substitute fuels (S. Rotter, A. Lehmann, T. Marzi, E. Moehle, D. Schingnitz, G. Hoffmann); (6) Filtering technology for substitute fuels - Experience report with control filters in power plants (C. Lake, E. Hacke); (7) The fuel processing plant Weidenhausen - Substitute fuel based power supply of the paper plant of SCA Witzenhausen (A. Puchelt); (8) Energy efficiency at the mechanical biological residual waste processing (R. Wallmann); (9) Planning of substitute fuel based power plants for power plant (M. Horeni, M. Walther); (10) Fluidized bed combustion for municipal and industrial wastes - Substitute fuel based power plants in the industrial park Hoechst (D. Lorbach); (11) Multistage steam superheating - Increase of efficiency of substitute fuel based, biomass based and solar thermal power plants (R. Schu, R. Leithner); (12) Energetic utilization of biomass in Austria (D. Sager, J. Bleeker); (m) First operational experiences at the combustion of biomass in the biomass cogeneration plant Emden (H. Braeuer, J. Bleeker); (13) Use of biomass and substitute fuels in fluidized bed combustions (F. Winter, P. Szentannai); (14) Costs of biomass combustion - Procurement, operational costs, returns (W. Schumacher, D. Schwier); (15) Generation of substitutes of natural gas (SNG) from gasification gases (S. Biollaz); (16) Reduction of tar in the gasification gas from biomass by means of catalytical and

  6. Production of bio-oils from wood by flash pyrolysis; Herstellung von Bio-Oelen aus Holz in einer Flash-Pyrolyseanlage

    Energy Technology Data Exchange (ETDEWEB)

    Meier, D.; Ollesch, T. [Bundesforschungsanstalt fuer Forst- und Holzwirtschaft, Hamburg (Germany). Inst. fuer Holzchemie und Chemische Technologie des Holzes; Gerdes, C.; Kaminsky, W. [Hamburg Univ. (Germany). Inst. fuer Technische und Makromolekulare Chemie (ITMCh)

    1998-09-01

    Flash pyrolysis is a medium-temperature process (around 475 C) in which biomass is heated up rapidly in the absence of oxygen. The pyrolysis products are cooled down rapidly, condensing into a reddish-brown liquid with around half the calorific value of a conventional heating oil. In contrast to conventional charcoal production, flash pyrolysis is a modern process whose process parameters enure high liquid yields. Modern fluidized-bed reactors for flash pyrolysis of biomass tend to have high heating rates and short times of residue. In the `Hamburg process`, fluidized-bed reactors are used successfully for pyrolysis of plastics. A flash pyrolysis plant for biomass treatment was constructed in cooperation with Hamburg University with funds provided by the `Bundesstiftung Umwelt`. This contribution describes the first series of experiments, mass balances and oil analyses using beech wood as material to be pyrolyzed. (orig./SR) [Deutsch] Flash-Pyrolyse ist ein Mitteltemperatur-Prozess (ca. 475 C), in dem Biomasse unter Sauerstoffausschluss sehr schnell erhitzt wird. Die entstehenden Pyrolyseprodukte werden schnell abgekuehlt und kondensieren zu einer roetlich-braunen Fluessigkeit, die etwa die Haelfte des Heizwertes eines konventionellen Heizoeles besitzt. Flash-Pyrolyse ist, im Gegensatz zur konventionellen Holzverkohlung, ein modernes Verfahren, dessen spezielle Verfahrensparameter hohe Fluessigausbeuten ermoeglichen. Hohe Aufheizraten, verbunden mit kurzen Verweilzeiten, werden mit stationaeren Wirbelbettreaktoren erzielt die gegenwaertig vorwiegend fuer die Flash-Pyrolyse von Biomasse eingesetzt werden. Im `Hamburger Verfahren` haben sich Wirbelbettreaktoren im Bereich der Kunststoffpyrolyse bewaehrt. Daher wurde in Zusammenarbeit mit der Universitaet Hamburg und finanzieller Foerderung der Bundesstiftung Umwelt eine Flash-Pyrolyseanlage fuer Biomasse gebaut: In dieser Arbeit werden erste Versuchsreihen, Massenbilanzen und Oelanalysen aus der Pyrolyse von

  7. Biomass treatment method

    Science.gov (United States)

    Friend, Julie; Elander, Richard T.; Tucker, III; Melvin P.; Lyons, Robert C.

    2010-10-26

    A method for treating biomass was developed that uses an apparatus which moves a biomass and dilute aqueous ammonia mixture through reaction chambers without compaction. The apparatus moves the biomass using a non-compressing piston. The resulting treated biomass is saccharified to produce fermentable sugars.

  8. Karotisstenose-S3-Leitlinien: Aus der Sicht des Interventionisten

    Directory of Open Access Journals (Sweden)

    Deutschmann H

    2013-01-01

    Full Text Available Die S3-Leitlinien zur Diagnostik, Therapie und Nachsorge der extrakraniellen Karotisstenose bewerten sowohl die endovaskuläre Stentbehandlung (CAS als auch die chirurgische Endarteriektomie (CEA im Lichte der in den Jahren zuvor durchgeführten großen randomisierten klinischen Studien. Dabei wird die derzeit vorhandene wissenschaftliche Evidenz berücksichtigt. Aus den Leitlinien geht hervor, dass die CEA symptomatischer Stenosen geringfügig sicherer ist, was die unmittelbaren periinterventionellen Komplikationen wie ipsilateraler Schlaganfall und Mortalität betrifft. Längerfristig sind sowohl CEA als auch CAS gleichermaßen effektiv zur Prävention eines Rezidivschlaganfalles. Die CAS asymptomatischer Stenosen „kann“ in Zentren durchgeführt werden, in denen das periprozedurale Risiko für Schlaganfall und Tod 3 % liegt, vorzugsweise jedoch nur bei Patienten 70 Jahren und erhöhtem chirurgischen Risiko. Für die CAS der symptomatischen Karotisstenose gilt Ähnliches wie für die asymptomatische Stenose. Erfahrene Zentren (Komplikationsrate 6 % können, unter Berücksichtigung allfälliger zusätzlicher Risiken (z. B. ungünstige Anatomie, ihren Patienten die CAS anbieten, auch wenn keiner der zusätzlichen Faktoren, die gegen eine CEA sprechen, vorliegt. Zusätzlich scheint das unmittelbar perioperative Herzinfarktrisiko bei der CAS geringer zu sein als bei der CEA. Die CAS hat auch einen hohen Stellenwert bei der Behandlung von Tandemstenosen, bei bilateralen hochgradigen Stenosen sowie bei Akutverschlüssen, bei denen eine mechanische Thrombektomie zur Revaskularisation des intrakraniellen Gefäßverschlusses notwendig ist. Letztlich bewegen wir uns immer stärker auf eine individualisierte, stark an die Patienten angepasste Therapie hin. Der Expertise des Interventionszentrums sowie der sorgfältigen präinterventionellen Bildgebung mittels Ultraschall, CT- oder MR-Angiographie kommen in diesem Kontext eine besondere Bedeutung zu.

  9. Comparison of different methods of assessing the tar content of gases from wood gasification; Vergleich verschiedener Methoden zur Bestimmung des Teergehalts in Gasen aus der Holzvergasung

    Energy Technology Data Exchange (ETDEWEB)

    Moersch, O.; Spliethoff, H.; Hein, K.R.G. [Stuttgart Univ. (Germany). Inst. fuer Verfahrenstechnik und Dampfkesselwesen

    1998-09-01

    The authors present a method developed at the Institute of Chemical Engineering and Steam Boiler Technology (IVD) of Stuttgart University for quasi-continuous online measurement of tar concentrations in gases from biomass gasification. The method is compared with other methods in terms of time requirements, accuracy, and cost: Gravimetry, wet chemical analysis, solid phase amino-adsorption (SPA), and online process gas chromatography. The measurements were carried out on the fluidized-bed combustion system of the IVD. Wood was gasified at 800 degrees centigrade with a fuel/air ratio of 0.25. The measured tar concentrations differed widely, i.e. between 0.8 and 6.8 g per cubic metre. (orig.) [Deutsch] In dieser Arbeit wird ein am Institut fuer Verfahrenstechnik und Dampfkesselwesen (IVD) entwickeltes Verfahren zur quasikontinuierlichen Online-Messung des Teergehalts im Gas aus der Biomassevergasung vorgestellt und mit anderen Methoden aus der Literatur im Hinblick auf Zeitaufwand, Genauigkeit und Kosten verglichen. Untersucht wurden dabei eine gravimetrische Methode, die nasschemische Bestimmung, das Solid-Phase-Amino Adsorptionsverfahren (SPA), sowie die Online Analyse mittels Prozess-Gaschromatograph. Die Messungen wurden an der Wirbelschichtvergasungsanlage des IVD durchgefuehrt. Vergast wurde Holz bei 800 C und einer Luftzahl von 0.25. Der mit den verschiedenen Verfahren ermittelte Teergehalt unterscheidet sich zum Teil erheblich. Es ergaben sich Werte zwischen 0.8 und 6.8 g/m{sup 3}. (orig.)

  10. Das Lektin aus der Erbse Pisum sativum : Bindungsstudien, Monomer-Dimer-Gleichgewicht und Rückfaltung aus Fragmenten

    Science.gov (United States)

    Küster, Frank

    2002-11-01

    Das Lektin aus Pisum sativum, der Gartenerbse, ist Teil der Familie der Leguminosenlektine. Diese Proteine haben untereinander eine hohe Sequenzhomologie, und die Struktur ihrer Monomere, ein all-ß-Motiv, ist hoch konserviert. Dagegen gibt es innerhalb der Familie eine große Vielfalt an unterschiedlichen Quartärstrukturen, die Gegenstand kristallographischer und theoretischer Arbeiten waren. Das Erbsenlektin ist ein dimeres Leguminosenlektin mit einer Besonderheit in seiner Struktur: Nach der Faltung in der Zelle wird aus einem Loop eine kurze Aminosäuresequenz herausgeschnitten, so dass sich in jeder Untereinheit zwei unabhängige Polypeptidketten befinden. Beide Ketten sind aber stark miteinander verschränkt und bilden eine gemeinsame strukturelle Domäne. Wie alle Lektine bindet Erbsenlektin komplexe Oligosaccharide, doch sind seine physiologische Rolle und der natürliche Ligand unbekannt. In dieser Arbeit wurden Versuche zur Entwicklung eines Funktionstests für Erbsenlektin durchgeführt und seine Faltung, Stabilität und Monomer-Dimer-Gleichgewicht charakterisiert. Um die spezifische Rolle der Prozessierung für Stabilität und Faltung zu untersuchen, wurde ein unprozessiertes Konstrukt in E. coli exprimiert und mit der prozessierten Form verglichen. Beide Proteine zeigen die gleiche kinetische Stabilität gegenüber chemischer Denaturierung. Sie denaturieren extrem langsam, weil nur die isolierten Untereinheiten entfalten können und das Monomer-Dimer-Gleichgewicht bei mittleren Konzentrationen an Denaturierungsmittel auf der Seite der Dimere liegt. Durch die extrem langsame Entfaltung zeigen beide Proteine eine apparente Hysterese im Gleichgewichtsübergang, und es ist nicht möglich, die thermodynamische Stabilität zu bestimmen. Die Stabilität und die Geschwindigkeit der Assoziation und Dissoziation in die prozessierten bzw. nichtprozessierten Untereinheiten sind für beide Proteine gleich. Darüber hinaus konnte gezeigt werden, dass auch unter

  11. Aussiedler aus Osteuropa weniger gern gesehen : Einstellungsmuster gegenüber Gastarbeitern, Übersiedlern und Aussiedlern

    OpenAIRE

    Wiegand, Erich

    1991-01-01

    'In den letzten zwei Jahren sind die Zahlen der Übersiedler aus der ehemaligen DDR und der deutschstämmigen Aussiedler aus Osteuropa, die in die Bundesrepublik zugewandert sind, sprunghaft angestiegen. Im juristischen Sinne unterscheidet sich ihre Situation ganz erheblich von der Rechtsposition der ausländischen Arbeitnehmer und deren Familienangehörigen aus den ehemaligen Anwerbeländern, die größtenteils schon lange in Deutschland leben, sowie der Asylsuchenden aus den verschiedensten Länder...

  12. Biomass gasification in a circulating fluidized bed; Vergasung von Biomasse in der zirkulierenden Wirbelschicht

    Energy Technology Data Exchange (ETDEWEB)

    Ising, M.; Hoelder, D.; Backhaus, C.; Althaus, W. [Fraunhofer Inst. fuer Umwelt-, Sicherheits- und Energietechnik UMSICHT, Oberhausen (Germany)

    1998-09-01

    Biomass gasification in a circulating fluidized bed, in combination with a gas engine or gas burner, is a promising option for energetic use of biomass. Economic efficiency analyses on the basis of the UMSICHT plant show that this technology for combined heat and power generation from biomass is promising also for the range below 10 MW. The economic situation of any plant must be considered for the specific boundary conditions imposed by the power supply industry. The feasibility of the process was tested in a demonstration plant at Oberhausen. The plant was optimized further in extensive test series, and a number of tar reduction processes were investigated and improved on. The authors now intend to prove that gasification in a circulating fluidized bed combined with a gas engine cogeneration plant is feasible in continuous operation. (orig./SR) [Deutsch] Die Vergasung von Biomasse in der zirkulierenden Wirbelschicht ist in Kombination mit einem Gasmotor oder einem Gasbrenner eine vielversprechende Option fuer die energetische Biomassenutzung. Wirtschaftlichkeitsbetrachtungen auf Basis der UMSICHT-Anlage zeigen, dass diese Technologie fuer die gekoppelte Strom- und Waermeerzeugung aus Biomasse auch im Leistungsbereich unter 10 MW grosse Chancen verspricht. Dabei ist die oekonomische Situation einer Anlage im Einzelfall unter Beachtung der energiewirtschaftlichen Randbedingungen zu beurteilen. Durch den Betrieb einer Demonstrationsanlage in Oberhausen konnte die Funktion des Verfahrens nachgewiesen werden. In weiteren umfangreichen Versuchsreihen werden die Anlage weiter optimiert und verschiedene Konzepte zur Teerminderung untersucht und weiterentwickelt. Angestrebt ist der Nachweis des Dauerbetriebs von ZWS-Vergasung zusammen mit dem Gasmotoren-BHKW. (orig./SR)

  13. Potential and possibilities of supplying energy from biomass and biogas; Potentiale und Moeglichkeiten der Energiebereitstellung durch Biomasse und Biogas

    Energy Technology Data Exchange (ETDEWEB)

    Sonnenberg, H. [Bundesforschungsanstalt fuer Landwirtschaft, Braunschweig (Germany). Inst. fuer Betriebstechnik; Weiland, P.; Ahlgrimm, H.J. [Bundesforschungsanstalt fuer Landwirtschaft (FAL), Braunschweig (Germany). Inst. fuer Technologie

    1998-06-01

    Agriculture`s potential contribution to the energy supply of the ``town of the future`` through the conversion of biomass to energy, including biogas production, is a rather modest one. Supposing that the share of total renewable energy in Germany`s primary energy demand rises to approximately 4%, then the proportion of biomass from biotic raw materials especially produced for the purpose will at the most make up an eighth of this amount. Beyond this, biomass is burdened with other drawbacks such as low supply efficiency, limited availability, and weather-dependent reliability. On the other hand, biomass is well suited for conversion to solid, liquid, and gaseous fuels, including inexpensive ones with low energy density (solid fuels), mostly used for stationary heating applications, as well as more expensive ones such as liquid fuels with a high energy density for mobile applications in the automotive sector. Thanks to its capacity to regenerate, biomass is an inexhaustible resource. Moreover, its natural life cycle has a small impact on the environment. [Deutsch] Der Beitrag, den die Landwirtschaft durch energetische Nutzung von Biomasse, z.B. auch mit der Erzeugung von Biogas, zur Energieversorgung der `Stadt der Zukunft` leisten kann, nimmt sich bescheiden aus. Wird erwartet, dass innerhalb des naechsten Jahrzehnts der Anteil regenerativer Energien insgesamt auf etwa 4% des Primaerenergie-Verbrauchs Deutschlands ansteigen koennte, so duerfte Biomasse als speziell zur Energiegewinnung angebaute nachwachsende Rohstoffe mit bestensfalls 0,5 Prozentpunkten daran beteiligt sein. Es beduerfen darueber hinaus auch Nachteile, wie geringe Bereitstellungseffizienz, beschraenkte Verfuegbarkeit und witterungsabhaengige Zuverlaessigkeit, der Beachtung. Die Biomasse kann jedoch mit Erfolg in feste, fluessige und gasfoermige Energietraeger konvertiert werden, sowohl in preiswerte mit geringer Energiedichte (Festbrennstoffe) fuer bevorzugt stationaeren Heizungs-Einsatz als auch

  14. Pretreated densified biomass products

    Science.gov (United States)

    Dale, Bruce E; Ritchie, Bryan; Marshall, Derek

    2014-03-18

    A product comprising at least one densified biomass particulate of a given mass having no added binder and comprised of a plurality of lignin-coated plant biomass fibers is provided, wherein the at least one densified biomass particulate has an intrinsic density substantially equivalent to a binder-containing densified biomass particulate of the same given mass and h a substantially smooth, non-flakey outer surface. Methods for using and making the product are also described.

  15. Energy use of biomass

    OpenAIRE

    HOLEČKOVÁ, Michaela

    2010-01-01

    The aim of this bachelor thesis is the research of different types of biomass, description of the various types of methods and technologies for energy usage of biomass and the mapping of large power plant units in the Czech Republic. The first part of this thesis deals with the definition of biomass, its distribution and the description of basic essential attributes describing its composition. The downstream part of this work is focused on the technologies of gaining energy out of biomass or ...

  16. Vollkeramik, Titan oder konventionelle Metallkeramik: Welche Bruchlasten halten die Rekonstruktionen in vitro aus?

    OpenAIRE

    Stawarczyk, B; Fischer, J.

    2008-01-01

    In der vorliegenden Untersuchung wurden die Bruchlasten von Kronen mit verschiedenen Gerüst- und Verblendkombinationen geprüft und verglichen. Dafür wurden formidentische Gerüste aus Titan und Zirkoniumdioxid hergestellt und mit dafür geeigneten Verblendkeramiken verblendet. Als Kontrollgruppe dienten Kronen aus dem konventionellen System Degudent U/VM13. Die verblendeten Kronen wurden auf einem Metallstumpf zementiert und in einer entsprechenden Prüfvorrichtung im 45°-Winkel bis zum Bruch be...

  17. Lebensgeschichten aus der Fremde. Autobiografien deutschsprachiger emigrierter SchriftstellerInnen als Beispiele literarischer Akkulturation nach 1933

    Directory of Open Access Journals (Sweden)

    Robert Krause

    2010-12-01

    Full Text Available Mit der Massenauswanderung aus Deutschland und Europa zwischen 1933 und 1941 nahmen Flucht- und Lebenswege ihren Ausgang, die in zahlreichen Fällen nie mehr zurück in die verlassene Heimat, sondern vielmehr zu einer neuen persönlichen, gesellschaftlichen und kulturellen Existenz führten. Etliche solcher Lebensgeschichten aus der Fremde werden durch autobiografische Texte bezeugt und tragen als Erinnerungen bis heute zum kulturellen Gedächtnis und zur kollektiven Identität der Nachkriegsgesell...

  18. Proteins in biomass streams

    NARCIS (Netherlands)

    Mulder, W.J.

    2010-01-01

    The focus of this study is to give an overview of traditional and new biomasses and biomass streams that contain proteins. When information was available, the differences in molecular structure and physical and chemical properties for the different proteins is given. For optimal biomass use, isolati

  19. medinfo quergelesen: Informationen aus dem Weblog medinfo (Januar-April 2009)

    OpenAIRE

    Klein, D

    2009-01-01

    Are you up to date? This article provides a selection of the most interesting contents of the weblog medinfo from January to April 2009. Sind Sie auf dem Laufenden? Dieser Beitrag enthält eine Auswahl der interessantesten Inhalte aus dem medinfo-Blog von Januar bis April 2009.

  20. Gesundheitspsychologie aus dem deutschsprachigen Raum: Literaturentwicklung, Forschungstrends und interdisziplinäre Vernetzung.

    OpenAIRE

    Schui, Gabriel; Krampen, Günter

    2009-01-01

    Die Literaturentwicklung in der Gesundheitspsychologie imdeutschsprachigen Raum, die von Krampen und Montada(2000) bibliometrisch beschrieben wurde, wird hiermit aktuellen Daten aus PSYNDEX und PsycINFO weiterverfolgt. Dargestellt werden die relativen Literaturhäufigkeiten für gesundheitspsychologische Thesaurusbegriffe und Sachgebietsklassifikationen nach der American Psychological Association(APA). Weiterhin wird die Gesundheitspsychologie mit anderen kleineren Teildisziplinen sowie den ang...

  1. Review Essay: Die Geburt der (technischen) Netze aus den Vorstellungen von Subjektivität

    OpenAIRE

    Viehöver, Willy

    2007-01-01

    Tanja PAULITZ untersucht aus einer konstruktivistischen Mikroperspektive Technikentwicklungsprozesse im Feld der Vernetzungstechnologien. Das Kernthema der innovativen Studie ist die Bestimmung des Verhältnisses von (technischer) Vernetzung und Subjektivität. Vernetzung und Subjektivierung stehen dabei nicht in einem Verhältnis instrumenteller Nutzung, sondern in einer produktiven Wechselbeziehung. PAULITZ' Arbeit nimmt eine Herstellungsperspektive ein, die ihr Hauptaugenmerk einerseits auf d...

  2. Die Biosynthese cytotoxischer Lignane aus Linum nodiflorum L. (Linaceae): ß-Peltatin 6-O-Methyltransferase

    OpenAIRE

    Kranz, Kerstin

    2004-01-01

    Lignane sind im Pflanzenreich weit verbreitete phenolische Sekundärstoffe, von denen Vertreter mit cytotoxischer, antimykotischer und antimikrobieller Wirkung bekannt sind. Das Aryltetralinlignan Podophyllotoxin, das aus Podophyllum peltatum oder Podophyllum hexandrum gewonnen wird, dient als Ausgangsstoff der semisynthetischen Krebs-medikamente Etoposid, Teniposid und Etopophos. Aber auch in Linaceae ist das Vork...

  3. Atractocybeloides, eine kleinwüchsige Trilobitengattung aus baltoskandischen Geschieben und ihrem Anstehenden

    Directory of Open Access Journals (Sweden)

    H.-H. Krueger

    2002-01-01

    Full Text Available Aus mittel- bis oberordovizischen Geschieben werden fünf Taxa der kleinwüchsigen Trilobitengattung Atractocybeloides vorgestellt, davon die beiden neuen Arten Atractocybeloides nebeni n. sp. und Atractocybeloides oepiki n. sp. Die Gattung wurde 1991 an Fragmenten aufgestellt. Sie hat sich in der Aseri-Stufe aus Cybele entwickelt. Neue Funde und das reichhaltige Material aus der Sammlung Rhebergen, in der auch fast vollständige Panzerhemden von A. berneri enthalten sind, ermöglichten eine Rekonstruktion. Weiterhin wird die aus Norwegen beschriebene Art Atractopyge gracilis der Gattung Atractocybeloides zugeordnet. Große Ähnlichkeiten bestehen zur ungefähr gleichaltrigen nordamerikanischen kleinwüchsigen Gattung Cybeloides. Five taxa of the small trilobite genus Atractocybeloides are presented from Middle to Late Ordovician erratic boulders, including the new species Atractocybeloides nebeni n. sp. and Atractocybeloides oepiki n. sp. The genus was errected in 1991 on the basis of fragmentary material. It evolved from Cybele during Aseri-zone times. A reconstruction is made possible due to new finds and the rich material from the Rhebergen collection, including nearly complete cuticles of A. berneri. Furthermore, Atractopyge gracilis from Norway is assigned to Atractocybeloides. Strong similarities exist to the roughly coeval, small trilobite genus Cybeloides, which is known from North America. doi:10.1002/mmng.20020050108

  4. Monitoring `Renewable fuels`. Gasification and pyrolysis of biomass. Second situation report; Monitoring ``Nachwachsende Rohstoffe``. Vergasung und Pyrolyse von Biomasse. Zweiter Sachstandsbericht

    Energy Technology Data Exchange (ETDEWEB)

    Roesch, C.; Wintzer, D.

    1997-04-01

    The second situation report deals with gasification and pyrolysis as means of improving the energetic utilisation of wood and strawlike biomass and with various possibilities of utilising the gas produced in these processes. It also presents different gasification techniques, measures for gas purification, and ways of utilising gas for electricity generation. Out of the wide range of possible process combinations for producing energy from biomass the report only deals more closely with a few concepts that appear very promising from today`s viewpoint. Working from the current state and perspectives of technical development and from prospective operating conditions and potential market chances of pyrolysis and gasification the report deliberates on the future orientation of research, development, and demonstration activities. (orig./SR) [Deutsch] Im zweiten Sachstandsbericht werden die Vergasung und Pyrolyse zur besseren energetischen Nutzung von Holz und halmartiger Biomasse und verschiedene Moeglichkeiten zur Verwertung des dabei erzeugten Gases betrachtet. Es werden unterschiedliche Vergasungstechniken, Massnahmen zur Gasreinigung und Arten der Gasnutzung zur Stromgewinnung dargestellt. Aus der Vielzahl an moeglichen Kombinationen werden einige, aus gegenwaertiger Sichtweise besonders vielversprechende Konzepte zur Energieerzeugung ueber die Biomassevergasung naeher ausgefuehrt. Ausgehend vom Stand und von den Perspektiven der technischen Entwicklungen sowie den Einsatzbedingungen und potentiellen Marktchancen werden Schlussfolgerungen fuer die zukuenftige Ausrichtung im Bereich Forschung, Entwicklung und Demonstration Anstrengungen gezogen. (orig./SR)

  5. Complex pendulum biomass sensor

    Science.gov (United States)

    Hoskinson, Reed L.; Kenney, Kevin L.; Perrenoud, Ben C.

    2007-12-25

    A complex pendulum system biomass sensor having a plurality of pendulums. The plurality of pendulums allow the system to detect a biomass height and density. Each pendulum has an angular deflection sensor and a deflector at a unique height. The pendulums are passed through the biomass and readings from the angular deflection sensors are fed into a control system. The control system determines whether adjustment of machine settings is appropriate and either displays an output to the operator, or adjusts automatically adjusts the machine settings, such as the speed, at which the pendulums are passed through the biomass. In an alternate embodiment, an entanglement sensor is also passed through the biomass to determine the amount of biomass entanglement. This measure of entanglement is also fed into the control system.

  6. Biomass to energy

    International Nuclear Information System (INIS)

    This road-map proposes by the Group Total aims to inform the public on the biomass to energy. It explains the biomass principle, the possibility of biomass to energy conversion, the first generation of biofuels (bio ethanol, ETBE, bio diesel, flex fuel) and their advantages and limitations, the european regulatory framework and policy with the evolutions and Total commitments in the domain. (A.L.B.)

  7. Process for treating biomass

    Energy Technology Data Exchange (ETDEWEB)

    Campbell, Timothy J; Teymouri, Farzaneh

    2015-11-04

    This invention is directed to a process for treating biomass. The biomass is treated with a biomass swelling agent within the vessel to swell or rupture at least a portion of the biomass. A portion of the swelling agent is removed from a first end of the vessel following the treatment. Then steam is introduced into a second end of the vessel different from the first end to further remove swelling agent from the vessel in such a manner that the swelling agent exits the vessel at a relatively low water content.

  8. Gasification-based biomass

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2009-01-18

    The gasification-based biomass section of the Renewable Energy Technology Characterizations describes the technical and economic status of this emerging renewable energy option for electricity supply.

  9. Process for treating biomass

    Science.gov (United States)

    Campbell, Timothy J.; Teymouri, Farzaneh

    2015-08-11

    This invention is directed to a process for treating biomass. The biomass is treated with a biomass swelling agent within the vessel to swell or rupture at least a portion of the biomass. A portion of the swelling agent is removed from a first end of the vessel following the treatment. Then steam is introduced into a second end of the vessel different from the first end to further remove swelling agent from the vessel in such a manner that the swelling agent exits the vessel at a relatively low water content.

  10. Combustion gas from biomass - innovative plant concepts on the basis of circulating fluidized bed gasification; Brenngas aus Biomasse - innovative Anlagenkonzepte auf Basis der Zirkulierenden Wirbelschichtvergasung

    Energy Technology Data Exchange (ETDEWEB)

    Greil, C.; Hirschfelder, H. [Lurgi Umwelt GmbH, Frankfurt am Main (Germany)

    1998-09-01

    The contribution describes the applications of the Lurgi-ZWS gas generator. There are three main fields of application: Direct feeding of combustion gas, e.g. into a rotary kiln, as a substitute for coal or oil, without either dust filtering or gas purification. - Feeding of the combustion gas into the steam generator of a coal power plant after dust filtering and, if necessar, filtering of NH{sub 3} or H{sub 2}S. - Combustion in a gas turbine or gas engine after gas purification according to specifications. The applications are described for several exemplary projects. (orig./SR) [Deutsch] Im folgenden wird ueber die Anwendung des Lurgi-ZWS-Gaserzeugers berichtet. Nach heutiger Sicht stehen drei Anwendungsgebiete im Vordergrund: - direkte Einspeisung des Brenngases in z.B. einen Zementdrehrohrofen zur Substitution von Kohle oder Oel, ohne Entstaubung und Gasreinigung. - Einspeisung des Brenngases nach Entstaubung und gegebenenfalls Entfernung weiterer Komponenten wie NH{sub 3} oder H{sub 2}S in den Dampferzeuger eines Kohlekraftwerkes - Einsatz des Brenngases in einer Gasturbine oder Gasmotor nach spezifikationsgerechter Gasreinigung. Die aufgefuehrten Einsatzmoeglichkeiten werden am Beispiel von Projekten beschrieben. (orig./SR)

  11. Optimierung von Applikationen aus der Hochspannungstechnik mit dünnen Schichten aus mikrovaristorgefüllten Polymeren mithilfe von nichtlinearen transienten 3D Simulationen

    OpenAIRE

    Weida, Daniel

    2014-01-01

       Die Schichten aus ZnO-Mikrovaristormaterial sind dünn im Vergleich zu ihrer lateralen Ausdehnung. Folglich wirkt das Material überwiegend in den zur Oberfläche tangentialen Richtungen feldsteuernd. Aufgrund der geringen Dicke kann die feldsteuernde Wirkung in der zur Oberfläche normalen Richtung meist vernachlässigt werden. Somit können diese dünnen Schichten näherungsweise als 2D-Objekte in den 3DSimulationen berücksichtigt werden. Mit dieser Option wurde die vorhandene ...

  12. Bulk chemicals from biomass

    NARCIS (Netherlands)

    Haveren, van J.; Scott, E.L.; Sanders, J.P.M.

    2008-01-01

    Given the current robust forces driving sustainable production, and available biomass conversion technologies, biomass-based routes are expected to make a significant impact on the production of bulk chemicals within 10 years, and a huge impact within 20-30 years. In the Port of Rotterdam there is a

  13. World wide biomass resources

    NARCIS (Netherlands)

    Faaij, A.P.C.

    2012-01-01

    In a wide variety of scenarios, policy strategies, and studies that address the future world energy demand and the reduction of greenhouse gas emissions, biomass is considered to play a major role as renewable energy carrier. Over the past decades, the modern use of biomass has increased rapidly in

  14. Hydrothermal conversion of biomass

    NARCIS (Netherlands)

    Knezevic, Dragan

    2009-01-01

    This thesis presents research of hydrothermal conversion of biomass (HTC). In this process, hot compressed water (subcritical water) is used as the reaction medium. Therefore this technique is suitable for conversion of wet biomass/ waste streams. By working at high pressures, the evaporation of wat

  15. Remarks on energetic biomass

    International Nuclear Information System (INIS)

    The authors report a study of energy biomass by considering its three main sources (forest, agriculture and wastes) and three energy needs (heat, fuel for transports, electricity) in the French national context. After having recalled the various uses of biomass (animal feeding, energy production, materials, chemical products), the authors discuss the characteristics of biomass with respect to other energy sources. Then, they analyse and discuss the various energy needs which biomass could satisfy: heat production (in industry, in the residential and office building sector), fuel for transports, electricity production. They assess and discuss the possible biomass production of its three main sources: forest, agriculture, and wastes (household, agricultural and industrial wastes). They also discuss the opportunities for biogas production and for second generation bio-fuel production

  16. Hydrothermal liquefaction of biomass

    DEFF Research Database (Denmark)

    Toor, Saqib; Rosendahl, Lasse; Rudolf, Andreas

    2011-01-01

    This article reviews the hydrothermal liquefaction of biomass with the aim of describing the current status of the technology. Hydrothermal liquefaction is a medium-temperature, high-pressure thermochemical process, which produces a liquid product, often called bio-oil or bi-crude. During...... the hydrothermal liquefaction process, the macromolecules of the biomass are first hydrolyzed and/or degraded into smaller molecules. Many of the produced molecules are unstable and reactive and can recombine into larger ones. During this process, a substantial part of the oxygen in the biomass is removed...... by dehydration or decarboxylation. The chemical properties of bio-oil are highly dependent of the biomass substrate composition. Biomass constitutes of various components such as protein; carbohydrates, lignin and fat, and each of them produce distinct spectra of compounds during hydrothermal liquefaction...

  17. Rheology of concentrated biomass

    Science.gov (United States)

    Samaniuk, J. R.; Wang, J.; Root, T. W.; Scott, C. T.; Klingenberg, D. J.

    2011-12-01

    Economic processing of lignocellulosic biomass requires handling the biomass at high solids concentration. This creates challenges because concentrated biomass behaves as a Bingham-like material with large yield stresses. Here we employ torque rheometry to measure the rheological properties of concentrated lignocellulosic biomass (corn stover). Yield stresses obtained using torque rheometry agree with those obtained using other rheometric methods, but torque rheometry can be used at much larger solids concentration (weight fractions of insoluble solids greater than 0.2). Yield stresses decrease with severity of hydrolysis, decrease when water-soluble polymers are added (for nonhydrolyzed biomass), and increase with particle length. Experimental results are qualitatively consistent with those obtained from particle-level simulations.

  18. Sustainable biomass-derived hydrothermal carbons for energy applications

    Energy Technology Data Exchange (ETDEWEB)

    Falco, Camillo

    2012-01-15

    initial reaction mixture was found out to be extremely beneficial, because it allowed the fixation of a higher N amount, in the algae derived HTC carbons (i.e. {approx} 60%), and the attainment of higher product yields (50%). Both positive effects were attributed to Maillard type cascade reactions taking place between the monosaccharides and the microalgae derived liquid hydrolysis/degradation products, which were in this way recovered from the liquid phase. KOH chemical activation of the microalgae/glucose mixture derived HTC carbons produced highly microporous N-doped carbons. Although the activation process led to a major reduction of the N-content, the retained N-amount in the ACs was still considerable. These features render these materials ideal candidates for supercapacitors electrodes, since they provide extremely high surface areas, for the formation of electric double-layer, coupled to abundant heteroatom doping (i.e. N and O) necessary to obtain a pseudocapacitance contribution. [German] Die Notwendigkeit, die Abhaengigkeit der Menschheit von fossilen Brennstoffen zu reduzieren ist die treibende Kraft hinter aktuellen Forschungsanstrengungen in den Materialwissenschaften. Folglich besteht heutzutage ein erhebliches Interesse daran Alternativen zu Materialien, die aus fossilen Resourcen gewonnen werden, zu finden. Kurzfristig ist zweifellos Biomasse die vielversprechendste Alternative, da sie aus heutiger Sicht die einzige nicht-fossile, nachhaltige und nachwachsende Kohlenstoffquelle ist. Konsequenterweise werden die Anstrengungen neue Syntheseansaetze zur Konvertierung von Biomasse und ihren Derivaten in kohlenstoffbasierten Materialien forwaehrend erhoeht. In diesem Zusammenhang hat sich die Hydrothermalkarbonisierung (HTC) als sehr vielseitiges Werkzeug zur Konvertierung von Biomasse-basierten Ausgangsstoffen in funktionale Kohlenstoffmaterialien herausgestellt. Dennoch gibt es bisher wenige Ansaetze um rohe Biomasse, genauer gesagt Lignicellulose, direkt in

  19. Ärma talu ehitanud Aus Invest müüdi Panama riiulifirmale maha / Kadri Paas

    Index Scriptorium Estoniae

    Paas, Kadri, 1982-

    2007-01-01

    Ärma talu ehitanud Aus Invest OÜ ei ole maksnud tööde eest kõigile alltöövõtjatele. Proua Evelin Ilvese sõnul on Ermamaa peatöövõtjale kõigi kokkulepitud tööde eest maksnud. 2007. a. mais müüsid Aivar Aus ja Mait Aus Tartu maakohtu registriosakonna andmetel Aus Invest OÜ Panamal registreeritud riiulifirmale Arliana Enterprises Corp. Vt. samas: Nõunik sekkus presidendi teleintervjuusse. Kui telekanali TV3 Lõuna-Eesti reporter Valgamaal visiidil viibivalt Toomas Hendrik Ilveselt ja proua Evelin Ilveselt Ärma talu ehitusega kaasnenud võlgade kohta aru päris, sekkus kõnelusse presidendi avalike suhete nõunik Toomas Sildam. Vt. ka lk. 10: Urmo Soonvald. Ärma triibulised. Ajakirjanik ootab Ärma talu probleemidega seoses suuremat avalikustamist

  20. Sulfid-Chinon Reduktase (SQR) aus Aquifex aeolicus: Gensynthese, Expression, Reinigung und biochemische Charakterisierung

    OpenAIRE

    Schödl, Thomas

    2003-01-01

    Biologische Sulfidoxidation findet in Organismen aller drei Domänen des Lebens statt. Als das in vielen Bakterien dafür verantwortliche Enzym wurde eine Sulfid:Chinon Oxidoreduktase (SQR) identifiziert. In der vorliegenden Arbeit wurde die SQR aus dem hyperthermophilen Eubakterium Aquifex aeolicus heterolog in Escherichia coli exprimiert und zur Homogenität gereinigt. Dazu wurde ein künstliches Gen synthetisiert, welches an den Codon-Gebrauch von Escherichia coli angepasst ist. Das gereinigte...

  1. Verletzungsmanagement im Spitzensport. Eine systemtheoretisch-konstruktivistische Analyse mit Fallstudien aus den Sportarten Leichtathletik und Handball.

    OpenAIRE

    Mayer, Jochen

    2009-01-01

    Problemstellung Schmerzen, Beschwerden und Verletzungen sind ein alltägliches Phänomen im Spitzensport. Ausgehend von Hinweisen auf einen aus medizinischer Sicht höchst problematischen Umgang mit Schmerzen und Verletzungen durch Athleten und ihr Umfeld werden in der vorliegenden Arbeit Möglichkeiten und Grenzen eines ganzheitlichen Verletzungsmanagements im Spitzensport beleuchtet. Dabei stehen Fragen der verletzungsbezogenen Entscheidungspraxis und ihrer psychosozialen Entscheidungsbeding...

  2. Herstellung und Eigenschaften von Metall/Halbleiter-Übergittern und Mikroringresonatoren : zwei Anwendungen aus der Nanotechnologie

    OpenAIRE

    Zander, Tim

    2009-01-01

    Diese Arbeit behandelt die Herstellung und Charakterisierung von planaren Metall-Halbleiter-Übergittern (MeSSL), bestehend aus einer Abfolge von ultradünnen InGaAs/GaAs/Cr-Schichten. Weiterhin wird die Änderung der Emissionsenergie in Abhängigkeit einer äußeren Verspannung von Mikroringresonatormoden sowie die darin enthaltenen selbstorganisiert gewachsenen InAs-Quantenpunkte (QP) untersucht. Die Herstellung der planaren MeSSLs wird durch Aufrollen einer Schichtfolge von epitaktisch gewach...

  3. Photooxidative Entfernung von biogenen Geruchsstoffen in der Trinkwasseraufbereitung aus Talsperrenwässern

    OpenAIRE

    Zoschke, Kristin

    2013-01-01

    Das saisonale Auftreten von erdig/modrigen Geruchsstoffen beeinträchtigt die organoleptische Qualität von Trinkwasser aus Talsperren weltweit. Grund für diese Beeinträchtigungen sind biogene Geruchsstoffe, die in oligo- bis mesotrophen Trinkwassertalsperren vorwiegend von benthischen Cyanobakterien freigesetzt werden. Als wichtigste Vertreter der biogenen Geruchsstoffe in den untersuchten sächsischen Trinkwassertalsperren wurden Geosmin und 2-Methylisoborneol (2-MIB) identifiziert, die bereit...

  4. Studien zum Verhalten von Anthocyanen aus Heidelbeeren im Humanstoffwechsel - Stabilisierung und Bindung durch Proteine

    OpenAIRE

    Ackermann, Matthias

    2010-01-01

    Identifizierung und Strukturaufklärung von Anthocyanen und ihrer Metabolite erfolgten mit Hilfe der mittels Hochleistungsflüssigchromatographie-Diodenarray-Detektion-Elektro-spray-Tan¬dem¬massen¬spektrometrie (HPLC-DAD-ESI-MS/MS). Quantitative Analysen wurden via HPLC-DAD durchgeführt. Die hierzu erforderlichen Referenzverbindungen wurden mittels präparativer HPLC aus Heidelbeeren isoliert (Reinheit zwischen 85,8% und 99,4%). Der Gehalt an Anthocyanen in den untersuchten Heidelbeerfrüchten la...

  5. Konferenzbericht: Analysen und Politik für Ostdeutschland – aus der Forschung des IWH –

    OpenAIRE

    Damm, B.; Günther, Jutta

    2009-01-01

    Mit der Tagung „Analysen und Politik für Ostdeutschland”, die am 18. November 2010 zum vierten Mal stattfand, verfolgt das IWH im Rahmen seines Auftrags der wirtschaftspolitischen Beratung das Ziel, aktuelle Themen aus der laufenden Forschung des Instituts einer wirtschaftspolitisch interessierten Fachöffentlichkeit zu präsentieren und zu diskutieren. Die jüngste Veranstaltung widmete sich der Frage, welche wirtschaftliche Entwicklung Ostdeutschland nach der Finanzkrise einschlägt und inwiefe...

  6. ELECTRONIC COMMERCE IN DER SCHWEIZ: Ergebnisse aus Einzelfallstudien und statistischen Erhebungen

    OpenAIRE

    Harabi, Najib; Schoch, Rolf; Hespeler, Frank

    2000-01-01

    Wo steht die Schweiz heute bezüglich Akzeptanz, Verbreitung und Nutzung von neuen Arbeits-und Geschäftsformen in Wirtschaft und Gesellschaft? Eine der bisher umfassendsten und gründlichsten internationalen empirischen Untersuchungen in der Bevölkerung und bei Betrieben gibt auf diese Frage wissenschaftlich fundierte Antworten: Renommierte Forschungsinstitute aus zehn Ländern der Europäischen Union (Dänemark, Deutschland, Frankreich, Finnland, Irland, Italien, Niederlande, Spanien, Schweden, V...

  7. Ethnische Stereotype im Kindergarten? Erzieherinnenhaltungen gegenüber Zuwanderern aus der Türkei

    OpenAIRE

    Kratzmann, Jens; Pohlmann-Rother, Sanna

    2012-01-01

    Dieser Beitrag greift die Diskussion um die Bedeutung von Stereotypen gegenüber Kindern mit Migrationshintergrund für deren Bildungserfolg auf. Anhand von qualitativen Interviews mit 10 Erzieherinnen aus der BiKS-Studie wird der Frage nachgegangen, inwieweit sich in deren Haltungen Stereotype gegenüber Kindern mit türkischem Migrationshintergrund und deren Familien zeigen. Die Interviews wurden auf der Grundlage eines Modells, das Stereotype als mehrdimensionales Konstrukt auffasst, inhaltsan...

  8. Vergleichende In-vivo-Untersuchung der Knochenneubildung mit konvertierten osteogenen Effektorzellen aus Stammzellen des Fettgewebes

    OpenAIRE

    Dehner, Jan-Friedrich

    2010-01-01

    Hintergrund und Ziele Autogene Knochentransplantate bieten eine Vielzahl von Möglichkeiten bei der Rekonstruktion von größeren Defekten im kraniofazialen Bereich. Allerdings sind der Anwendung auch Grenzen gesetzt. Durch die Verwendung von entsprechend vorbehandelten Stammzellen aus körpereigenen Entnahmeregionen besteht die Chance einer knöchernen Defektheilung über die Reichweite der Knochenersatzmaterialien hinaus. In dieser Studie wird das Einheilverhalten von differenzierten Stammzellen ...

  9. Behandlung von Essstörungen bei Jugendlichen aus Sicht der kinder- und jugendpsychiatrischen Klinik

    OpenAIRE

    Pfeiffer, Ernst; Hansen, Berit; Korte, Alexander; Lehmkuhl, Ulrike

    2005-01-01

    Der Beitrag stellt - im Sinne klinischer Leitlinien - die aktuelle Praxis einer auf die Behandlung von Essstörungen spezialisierten Universitätsklinik für Kinder- und Jugendpsychiatrie dar. Die Notwendigkeit eines multimodalen Therapiekonzeptes wird betont, bestehend aus Maßnahmen zur Normalisierung von Gewicht und Essverhalten, Heilpädagogik, einzel-, gruppen- und familienbezogener Psychotherapie, ergänzt durch Körper-, Kunst- und Musiktherapie und ggf. Psychopharmakotherapie. Abschlie...

  10. Aus der Geschichte Europas auf dem Weg zu einer europäischen Verfassung

    OpenAIRE

    Vette, Markus

    2003-01-01

    Die Europäische Gemeinschaft, ursprünglich aus sechs Partnern gebildet, wurde zwar bereits mehrfach erweitert und umfasste im Jahr 2003 15 Mitgliedsstaaten, aber eine so umfangreiche Herausforderung wie die Erweiterung 2004 und die Reform der Institutionen stand ihr sicher noch nicht bevor. Denn mit der kommenden Erweiterung besteht die Chance, dass alle europäischen Völker ihre Angelegenheiten erstmals dauerhaft und institutionalisiert friedlich miteinander regeln können. Um kein Missverstän...

  11. Erfassung der Wirkung von Lehrerprofessionalität aus bildungsökonomischer Perspektive

    OpenAIRE

    Silvia Teuber; Uschi Backes-Gellner; Johannes Mure

    2008-01-01

    Dieser Beitrag versucht die Professionalität von Lehrenden aus bildungsökonomischer Perspektive greifbar zu machen und die wichtigsten ökonomisch relevanten Studien und Ergebnisse zu diesem Themengebiet vorzustellen. So wird zum einen die Selektion und Motivation des Lehrers beleuchtet, die einen bedeutenden Einfluss auf die Schülerleistung hat. Jedoch lohnt auch eine Betrachtung der vorliegenden Rahmen- und Anreizbedingungen, da diese die Lehrkraft bzw. deren Verhalten maßgeblich beeinflusse...

  12. Lernen im Medienverbund: Nachhaltigkeit von Aus- und Weiterbildung der Polizei BaWü

    OpenAIRE

    Bendel, Oliver; Leithner, Barbara; Keller, Miriam; Back, Andrea

    2003-01-01

    Der Arbeitsbericht Lernen im Medienverbund: Nachhaltigkeit von Aus- und Weiterbildung der Polizei BaWü stellt die Neukonzeption einer Weiterbildung der Polizei Baden-Württemberg vor. Behandelt werden in diesem Zusammenhang generelle Aspekte bei der Einführung und Durchführung von Blended-Learning-Massnahmen, die Integration von Massnahmen im Bildungsbereich, Rollen bei Blended-Learning-Massnahmen, die Integration von Blended-Learning-Massnahmen in die tägliche Arbeit, Flexibilität und Aktuali...

  13. Verglichende Ökobilanz zweier Fahrzeugkomponenten aus unterschiedlichen Werkstoffen und Herstellungsprozessen

    OpenAIRE

    Herrmann, Jana; Michel, Sara; Scheel, Ramona; Seipt, Juliane; Grasshoff, Nico; Klapper, Helge; Plischtil, Max; Seifert, Johannes

    2014-01-01

    Unternehmen sind mehr und mehr dem globalen Wettbewerb, strengeren gesetzlichen Regelungen und veränderten Kundenbedürfnissen ausgesetzt. Durch eine Neuausrichtung des Unternehmens auf Stakeholder-Management können sich Entscheidungsträger an veränderte Marktbedingungen anpassen. Der vorliegende Beitrag ist ein Leitfaden zum Stakeholder-Management der gemeinsam mit Nachhaltigkeitsexperten von PricewaterhouseCoopers entwickelt wurde. Er besteht aus den Schritten (i) Strategisch Denken, (ii) An...

  14. Ziehen von Rohren aus Aluminiumlegierungen über einem Pendelziehdorn mit Ultraschall

    OpenAIRE

    Klubovic, Vladimir V.; Komlik, L. K.; Chrenov, O. V.

    1994-01-01

    Unter Einkopplung von longitudinalen Ultraschallschwingungen kann man beim Rohrziehen aus Aluminiumlegierungen über einem Pendelziehdorn die Ziehkraft um 25 - 32 % senken und gleichzeitig die logarithmische Formänderung beim Ziehen pro Durchgang steigern. Das Rohrziehen mit Ultraschall über einem fliegenden Dorn ist effektiver als das Vollprofilziehen. Die Anwendung von Ultraschallschwingungen mit großer Intensität ist eine notwendige Bedingung für eine effektive Senkung der Ziehkraft, besond...

  15. Ein Arachniden-Opisthosoma aus dem Obervisé von NW-Sachsen

    Directory of Open Access Journals (Sweden)

    E. Kahlert

    1998-01-01

    Full Text Available Ein aus dem Unterkarbon von NW-Sachsen stammendes Opisthosoma wird als Cryptomartus sp. beschrieben. Damit liegt stratigraphisch nach bisherigen Erkenntnissen der älteste Fund dieses Genus vor. An Arachnid-Opisthosoma from the Lower Carboniferous of North Western Saxony. An opisthosoma of Cryptomartus sp. is described from the Lower Carboniferous of North Western Saxony. That this my knowledge is the oldest record for the genus. doi:10.1002/mmng.19980010109

  16. In vitro Herstellung eines vorderen Kreuzbandkonstruktes aus mesenchymalen Stammzellen und einem Kollagen Typ I-Hydrogel

    OpenAIRE

    Schupp, Kathrin

    2007-01-01

    Verletzungen des vorderen Kreuzbandes gehören zu häufigsten Verletzungen des menschlichen Bandapparates. Da das vordere Kreuzband über ein schlechtes intrinsisches Heilungspotenzial verfügt, ist heutzutage die chirurgische Rekonstruktion mittels Sehnentransplantaten die Therapie der Wahl. Die vorliegende Arbeit beschäftigte sich mit der Fragestellung, ob es möglich ist, ein Kreuzband-Konstrukt aus mesenchymalen Stammzellen (MSCs) und einem Kollagen Typ I-Hydrogel herzustellen und wie die Einw...

  17. Isolierung, Kultivierung und magnetische Separation von Vorläuferzellen aus humanem respiratorischem Epithel

    OpenAIRE

    Wentges, Marek

    2004-01-01

    EINLEITUNG: Eine Trachealrekonstruktion bedingt Komplikationen wie z.B. Infektionen und Stenosierungen durch Granulationsgewebe. Diese werden durch ein differenziertes respiratorisches Epithel, das eine mukoziliäre Clearance ermöglicht, deutlich reduziert. Die Basalzellen gelten als die Vorläuferzellen des humanen respiratorischen Epithels (HRE), d.h. sie können sich teilen und besitzen das Potenzial zur Differenzierung. Durch die magnetische Zellseparation (MACS) sollen Vorläuferzellen aus d...

  18. RAMS/LCC Anforderungen im IRIS Standard - Herausforderung für Unternehmen aus der Schienenfahrzeugindustrie

    Directory of Open Access Journals (Sweden)

    Fatih ÖZTÜRK

    2014-12-01

    Full Text Available Um eine Teilhabe am internationalen Markt zu garantieren bzw. zu ermöglichen ist auch für Unternehmen aus dem Schienensektor ein funktionierendes Qualitätsmanagementsystem von Nöten. Zuspruch fand hierfür vor allem der Branchenstandard IRIS, welches im Jahre 2006 erstmals in Anwendung kam und mittlerweile auch 13 Unternehmen aus der Türkei ein Zertifikat besitzen. Der Trend ist steigend. In vielerlei Hinsicht scheint dieser Standard den Wünschen der Unternehmungen gerecht zu werden, doch auch Unmutstöne sind von einigen zuhören, die besonders auf die geringen Kenntnisse und Erfahrung der einzelnen Klienten zurückzuführen sind. Anzuführen ist auch die Tatsache, dass IRIS ein erst recht neuer Standard ist und deshalb auch je nach Schwierigkeiten und Wünschen des Klientels nach oben hin Aufbaufähig ist. Schwierigkeiten seitens der Befragten Unternehmen sind vor allem im Bereich des RAMS/LCC Management zu hören, die einige Firmen überfordern. In dieser Arbeit wird auch genauer auf dieses eingegangen und genauer aus der Sicht der  Unternehmen betrachtet.

  19. Erstnachweis von Taiwania, Cryptomeria und Liquidambar aus dem Bitterfelder und Baltischen Bernstein

    Directory of Open Access Journals (Sweden)

    H. Jähnichen

    1998-01-01

    Full Text Available Aus dem untermiozänen Bernstein von Bitterfeld (Sachsen-Anhalt werden erstmalig ein strukturzeigender Zweig von Taiwania schaeferi, ein isoliertes Nadel-Fragment von Cryptomeria sp. sowie ein Fruchtstand von Liquidambar europaea beschrieben. Außerdem muß “Widdringtonites oblongifolius” (Goeppert & Menge Caspary & Klebs 1906/07 pro parte aus dem obereozänen Baltischen Bernstein nach morphologisch-anatomischen Merkmalskomplexen ebenfalls zu Taiwania schaeferi gestellt werden. “Enormicutis eoconferta” — aff. Cryptomeria spec. (Schneider 1986 aus der obereozänen Braunkohle von Nordwestsachsen muß nach morphologisch-anatomischen Details zu Athrotaxis couttsiae (Heer Gardner revidiert werden. First record of Taiwania, Cryptomeria and Liquidambar from Bitterfeld and Baltic amber A structure-bearing twig of Taiwania schaeferi, an isolated needle-fragment of Cryptomeria spec. as also an aggregate fruit of Liquidambar europaea are firstly described from the Lower Miocene amber of Bitterfeld (Saxony-Anhalt. Moreover “Widdringtonites oblongifolius” (Goeppert & Menge Caspary & Klebs 1906/07 p.p. from the Upper Eocene Baltic amber after morphological-anatomical features must be also assigned to Taiwania schaeferi. “Enormicutis eoconferta” — aff. Cryptomeria sp. (Schneider 1986 from the Upper Eocene brown-coal of North Western Saxony after morphological-anatomical details must be revised to Athrotaxis couttsiae (Heer Gardner. doi:10.1002/mmng.19980010112

  20. Internationalität in Gender Studies – Reflexionen aus Indien und der Türkei

    Directory of Open Access Journals (Sweden)

    Dörte Segebart

    2013-07-01

    Full Text Available Der audiovisuelle Beitrag Internationalität in Gender Studies – Reflexionen aus Indien und der Türkei stellt durch die Darstellung sehr persönlicher individueller Sichtweisen und Erfahrungen die Spannbreite von Positionen zum Thema dar. Theoretische Reflexionen werden nicht unbedingt untermauert, aber auch nicht negiert. Der Beitrag will innerhalb des Jahrbuchs daran erinnern, dass hinter den theoretischen Debatten Menschen stehen, die sich miteinander austauschen und auseinandersetzen wollen. Multidirektionale Transfers sind erwünscht sowie eine ständige kritische Auseinandersetzung über das Wie. Duygu Aloglu aus Ankara, Türkei und Lavinia Mawlong aus Shillong und Mumbai, Indien promovieren am Institut für Geographische Wissenschaften an der FU Berlin. Sie sprechen über ihre persönliche Sichtweise auf das Thema Internationalisierung von Gender Studies, fokussieren speziell auf die Situation in der Türkei und in Indien und betten dies in ihren eigenen persönlichen Hintergrund ein. Die Interviews wurden auf Englisch und separat geführt. Sie sind im Film zusammengefügt worden.

  1. Incident-Reporting-Systeme als Möglichkeit zum organisationalem Lernen (nicht nur) aus Fehlern und kritischen Ereignissen

    OpenAIRE

    Vegten, Mandy Amanda van

    2008-01-01

    Die vorliegende Dissertation betrachtet institutionsinterne lokale (Critical-)Incident-Reporting-Systeme ((C)IRS) als eine Möglichkeit zum Lernen aus Fehlern und unerwünschten kritischen Ereignissen (sogenannte Incidents) im Krankenhaus. Die Notwendigkeit aus Incidents zu lernen, wird im Gesundheitswesen bereits seit den 1990er Jahren verstärkt diskutiert. Insbesondere risikoreichen Organisationen, in denen Incidents fatale Konsequenzen haben können, sollten umfassende Strategien erarbeiten, ...

  2. Gas generation from biomass for decentralized power supply systems; Gaserzeugung fuer dezentrale Energiesysteme auf der Basis von Biomasse

    Energy Technology Data Exchange (ETDEWEB)

    Kubiak, H.; Papamichalis, A.; Heek, K.H. van [DMT-Inst. fuer Kokserzeugung und Brennstofftechnik, Essen (Germany)

    1996-12-31

    By a reaction with steam, bioresidues and plants can be converted into a gas consisting mainly of hydrogen, carbon monoxide and methane which can be used for electric power generation in gas engines, gas turbins and fuel cells. The conversion processes, especially the fuel cell process, are environment-friendly and efficient. For decentralized applications (i.e. for biomass volumes of 0.5 to 1 t/h), an allothermal process is recommended which is described in detail. (orig) [Deutsch] Durch Reaktion mit Wasserdampf lassen sich Bioreststoffe und Energiepflanzen zu einem Gas umsetzen, das im wesentlichen aus Wasserstoff, Kohlenmonoxid und Methan besteht und z.B. ueber Gasmotoren, Gasturbinen, vorzugsweise aber Brennstoffzellen zu Strom umgewandelt werden kann. Die Umwandlungsverfahren, insbesondere unter Benutzung von Brennstoffzellen, sind umweltfreundlich und haben einen hohen Wirkungsgrad. Als Vergasungsverfahren eignet sich fuer die dezentrale Anwendung. - d.h. fuer eine Biomassemenge von 0,5 bis 1 t/h - insbesondere das hier beschriebene allotherme Verfahren. (orig)

  3. The biomass file

    International Nuclear Information System (INIS)

    As biomass represents the main source of renewable energy to reach the 23 per cent objective in terms of energy consumption by 2020, a first article gives a synthetic overview of its definition, its origins, its possible uses, its share in the French energy mix, its role by 2020, strengths and weaknesses for its development, the growth potential of its market, and its implications in terms of employment. A second article outlines the assets of biomass, indicates the share of some crops in biomass energy production, and discusses the development of new resources and the possible energy valorisation of various by-products. Interviews about biomass market and development perspectives are proposed with representatives of institutions, energy industries and professional bodies concerned with biomass development and production. Other articles comments the slow development of biomass-based cogeneration, the coming into operation of a demonstration biomass roasting installation in Pau (France), the development potential of biogas in France, the project of bio natural gas vehicles in Lille, and the large development of biogas in Germany

  4. Biomass in Germany

    International Nuclear Information System (INIS)

    This document provides, first, an overview of biomass industry in Germany: energy consumption and renewable energy production, the French and German electricity mix, the 2003-2013 evolution of renewable electricity production and the 2020 forecasts, the biomass power plants, plantations, biofuels production and consumption in Germany. Then, the legal framework of biofuels development in Germany is addressed (financial incentives, tariffs, direct electricity selling). Next, a focus is made on biogas production both in France and in Germany (facilities, resources). Finally, the French-German cooperation in the biomass industry and the research actors are presented

  5. The importance of biomass

    Energy Technology Data Exchange (ETDEWEB)

    Demirbas, A. [Selcuk University, Konya (Turkey)

    2004-03-15

    Various agricultural residues such as grain dust, wheat straw and hazelnut shell are available in Turkey as the sources of biomass energy. Among the biomass energy sources, fuelwood seems to be one of the most interesting because its share of the total energy production of Turkey is high at 21% and the techniques for converting it to useful energy are not necessarily sophisticated. The total forest potential of Turkey is around 935 million m3 with an annual growth of about 28 million m{sup 3}. Turkey's annual biomass potential in 2001 was million tons of oil equivalent. (author)

  6. Biomass_Master

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Biomass data found in this data set are broken into four regions of the Northeast US Continental Shelf Large Marine Ecosystem: Gulf of Maine, Georges Bank,...

  7. Biomass Carbon Stock

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Biomass carbon includes carbon stored in above- and below-ground live plant components (such as leaf, branch, stem and root) as well as in standing and down dead...

  8. Hydrothermal conversion of biomass

    OpenAIRE

    Knezevic, Dragan

    2009-01-01

    This thesis presents research of hydrothermal conversion of biomass (HTC). In this process, hot compressed water (subcritical water) is used as the reaction medium. Therefore this technique is suitable for conversion of wet biomass/ waste streams. By working at high pressures, the evaporation of water and high energy consumption that it requires can be avoided. The main focus of this work was HTC process aiming at production of transportation fuel intermediates. For this study, a new experime...

  9. Biomass feedstock analyses

    Energy Technology Data Exchange (ETDEWEB)

    Wilen, C.; Moilanen, A.; Kurkela, E. [VTT Energy, Espoo (Finland). Energy Production Technologies

    1996-12-31

    The overall objectives of the project `Feasibility of electricity production from biomass by pressurized gasification systems` within the EC Research Programme JOULE II were to evaluate the potential of advanced power production systems based on biomass gasification and to study the technical and economic feasibility of these new processes with different type of biomass feed stocks. This report was prepared as part of this R and D project. The objectives of this task were to perform fuel analyses of potential woody and herbaceous biomasses with specific regard to the gasification properties of the selected feed stocks. The analyses of 15 Scandinavian and European biomass feed stock included density, proximate and ultimate analyses, trace compounds, ash composition and fusion behaviour in oxidizing and reducing atmospheres. The wood-derived fuels, such as whole-tree chips, forest residues, bark and to some extent willow, can be expected to have good gasification properties. Difficulties caused by ash fusion and sintering in straw combustion and gasification are generally known. The ash and alkali metal contents of the European biomasses harvested in Italy resembled those of the Nordic straws, and it is expected that they behave to a great extent as straw in gasification. Any direct relation between the ash fusion behavior (determined according to the standard method) and, for instance, the alkali metal content was not found in the laboratory determinations. A more profound characterisation of the fuels would require gasification experiments in a thermobalance and a PDU (Process development Unit) rig. (orig.) (10 refs.)

  10. Biomass cogeneration. A business assessment

    Energy Technology Data Exchange (ETDEWEB)

    Skelton, J.C.

    1981-11-01

    This guide serves as an overview of the biomass cogeneration area and provides direction for more detailed analysis. The business assessment is based in part on discussions with key officials from firms that have adopted biomass cogeneration systems and from organizations such as utilities, state and federal agencies, and banks that would be directly involved in a biomass cogeneration project. The guide is organized into five chapters: biomass cogeneration systems, biomass cogeneration business considerations, biomass cogeneration economics, biomass cogeneration project planning, and case studies.

  11. Biomass pyrolysis for chemicals

    Energy Technology Data Exchange (ETDEWEB)

    De Wild, P.

    2011-07-15

    The problems associated with the use of fossil fuels demand a transition to renewable sources (sun, wind, water, geothermal, biomass) for materials and energy where biomass provides the only renewable source for chemicals. In a biorefinery, biomass is converted via different technologies into heat, power and various products. Here, pyrolysis (thermal degradation without added oxygen) of lignocellulosic biomass can play an important role, because it leads to an array of useful chemicals. Examples are furfural and acetic acid from hemicellulose, levoglucosan from cellulose and phenols and biochar from lignin. Since the three major biomass polymers hemicellulose, cellulose and lignin possess dissimilar thermal stabilities and reactivities, type and amount of degradation products are tunable by proper selection of the pyrolysis conditions. To determine if step-wise pyrolysis would be suitable for the production of chemicals, staged degasification of lignocellulosic biomass was studied. Due to limited yields, a hot pressurized water pre-treatment (aquathermolysis) followed by pyrolysis was subsequently developed as an improved version of a staged approach to produce furfural and levoglucosan from the carbohydrate fraction of the biomass. Lignin is the only renewable source for aromatic chemicals. Lignocellulosic biorefineries for bio-ethanol produce lignin as major by-product. The pyrolysis of side-streams into valuable chemicals is of prime importance for a profitable biorefinery. To determine the added-value of lignin side-streams other than their use as fuel for power, application research including techno-economic analysis is required. In this thesis, the pyrolytic valorisation of lignin into phenols and biochar was investigated and proven possible.

  12. Untersuchungen zur Kryokonservierung hämatopoetischer Stammzellen aus menschlichem Knochenmark mit Trehalose

    OpenAIRE

    Scheinkoenig, Christine

    2005-01-01

    Knochenmark oder periphere Blutstammzellen (PBSC) werden unter anderem für autologe oder, z.B. aus logistischen Gründen, für allogene hämatopoetische Stammzelltransplantationen kryokonserviert. Üblicherweise wird hierfür das Knochenmark 1:1 mit einer 20%igen DMSO – Lösung gemischt und kontrolliert eingefroren. Das frisch aufgetaute Knochenmark–DMSO Gemisch wird dem Patienten bei etwa 4°C infundiert, um eine bei höheren Temperaturen verstärkt stattfindende Zellschädigung durch DMSO zu vermeide...

  13. Bemerkenswerte Pflanzenvorkommen aus dem östlichen Ruhrgebiet im Jahr 2014

    OpenAIRE

    2015-01-01

    Im Folgenden werden für das östliche Ruhrgebiet bemerkenswerte Funde aufgeführt. Das Gebiet umfasst die Städte Gelsenkirchen, Essen, Herne, Bochum, Dortmund, Hagen und Hamm sowie die Kreise Recklinghausen, Unna und den Ennepe-Ruhr-Kreis. Zur besseren Auswertung wurden hinter den Fundorten die MTB-Angaben (Topographische Karte 1:25.000) angegeben und ggf. eine Bewertung des Fundes für den hiesigen Raum und der floristische Status hinzugefügt. Funde aus dem östlichen Ruhrgebiet, die von nordrhe...

  14. What does the phasing out of nuclear energy?; Was bedeutet der Ausstieg aus der Kernenergie?

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2015-07-01

    Since August 6, 2011 the phasing out of nuclear energy in Germany is decided politically. But he is mastered still a long way. In fact, the power economic development until shutdown of nuclear power plants the last in the year 2022 will significantly be affected by the replacement of the contribution to power supply by renewable energy. [German] Seit dem 6.8.2011 ist der Ausstieg aus der Kernenergienutzung in Deutschland politisch beschlossen. Doch bewaeltigt ist er noch laengst nicht. Tatsaechlich wird die stromwirtschaftliche Entwicklung bis zum Abschalten der letzten Kernkraftwerke im Jahr 2022 massgeblich vom Ersatz des entfallenden Versorgungsbeitrages durch erneuerbare Energien gepraegt sein.

  15. Hinweise zur Landschaftsentwicklung auf der Querfurt-Merseburger Platte aus historisch-geographischer Sicht

    OpenAIRE

    Arndt, Oliver

    2004-01-01

    Das beschriebene Gebiet umfasst eine Fläche von 282 km2 und stellt als Ausschnitt des subherzynen Schwarzerdegebietes einen relativ homogenen Raum im südlichen Sachsen-Anhalt dar. Es umfasst den größten Teil der im Landschaftsprogramm von Sachsen-Anhalt als „Querfurter Platte“ bezeichneten Landschaftseinheit (Ministerium für Umwelt- und Naturschutz des Landes Sachsen-Anhalt 1994). Aus geologischer Sicht ist das Untersuchungsgebiet zweigeteilt. An die durch Muschelkalk geprägte "Querfurter Mul...

  16. Code aus einem Forschungskontext mit CLAM in einen Web-Service verwandeln

    OpenAIRE

    Matteo Romanello

    2016-01-01

    Poster bei dem von CLARIN-D veranstaltetem CA3 Forum im Hamburg. Der Computational Linguistics Application Mediator (CLAM) ist ein im Rahmen von CLARIN-NL entwickeltes Python Tool, das darauf abzielt, die Transformation von Code aus einem Forschungskontext in einen Web-Service zu vereinfachen (van Gompel & Reynaert 2014). Während der HandsOn Session wird die CLAM Anwendung am Beispiel des für meine Promotion entwickelte Programms vorge...

  17. POW3D-Neutron diffusion module of the AUS system. A user`s manual

    Energy Technology Data Exchange (ETDEWEB)

    Harrington, B.V.; Pollard, J.P.; Barry, J.M.

    1996-11-01

    POW3D is a three-dimensional neutron diffusion module of the AUS modular neutronics code system. It performs eigenvalue, source of feedback-free kinetics calculations. The module includes general criticality search options and extensive editing facilities including perturbation calculations. Output options include flux or reaction rate plot files. The code permits selection from one of a variety of different solution methods (MINI, ICCG or SLOR) for inner iterations with region re balance to enhance convergence. A MINI accelerated Gauss-Siedel method is used for upscatter iterations with group rebalance to enhance a convergence. Chebyshev source extrapolation is applied for outer iterations. A detailed index is included.

  18. Nanostrukturierte Filme aus anorganisch-organischen Hybridmaterialien für die Photovoltaik

    OpenAIRE

    Perlich, Jan

    2009-01-01

    Es wurden nanostrukturierte dünne Filme aus kristallinem TiO2 für Anwendungen in der Photovoltaik untersucht. Die Herstellung der dünnen Filme basiert auf einem Hybridansatz. Das über eine Sol-Gel-Synthese bereitgestellte anorganische Metalloxid wird durch die Templateigenschaften des eingesetzten organischen Diblockcopolymers strukturiert. Über die Filmaufbringung mittels Schleuderbeschichtung wurden zunächst Hybridfilme hergestellt, die durch Kalzinierung in kristalline TiO2-Filme mit maßge...

  19. Europa nach Irakkrise und Verfassungskrach: aus polnischen und tschechischen Zeitungen und Fachzeitschriften, 1. Halbjahr 2004

    OpenAIRE

    Lang, Kai-Olaf

    2004-01-01

    Die am 1. Mai 2004 vollzogene Erweiterung der Europäischen Union gab in den Beitrittsländern Ostmitteleuropas vielfach dazu Anlaß, die eigene Position im sich wandelnden europäischen und internationalen Umfeld zu reflektieren. Neben der Sorge um das Schicksal der transatlantischen Beziehungen wird in zahlreichen Beiträgen die Furcht vor einer neuen Fragmentierung Europas deutlich: Gerade erst im sicheren Hafen EU angelangt, droht am Horizont die Gefahr eines neuen Kerns, aus Sicht vieler Beob...

  20. Über die Funktion und Struktur der Tyrosinase aus Streptomyces antibioticus

    OpenAIRE

    Salzbrunn, Kai Uwe

    2007-01-01

    Für die Aufklärung der chemisch anspruchsvollen Monophenolase-Reaktion von Tyrosinasen wurde ein System entwickelt, um das Zielprotein aus dem Bakterium Streptomyces antibioticus in großen Mengen und mit hoher Reinheit zu isolieren. Zudem konnte ein hypothetischer Reaktionsmechanismus für die Monophenolase- und die Diphenolase-Aktivität der Tyrosinase formuliert werden. Die beiden Reaktionen der S. antibioticus-Tyrosinase wurden kinetisch analysiert und auf diesem Weg die Aktivität des Enzyms...

  1. Evaluierung der technischen und wirtschaftlichen Umsetzbarkeit eines neuartigen Verfahrenskonzepts zur Herstellung von Proteinprodukten aus Sojabohnen

    OpenAIRE

    Seiler, Markus

    2006-01-01

    Die Sojabohne ist der weltweit bedeutsamste Rohstoff zur Herstellung von Proteinprodukten, Öl und Futtermittel. Die Herstellung der Proteinprodukte erfolgt im Anschluss an die mit Hexan durchgeführte Ölextraktion, die annähernd quantitativ verläuft (Restölgehalt < 2%). Dann besteht die Voraussetzung aus dem entölten Rückstand in wässriger Phase ohne Emulsionsbildung Proteinprodukte herstellen zu können. Es hat in der Vergangenheit bereits vielfache Versuche gegeben, dass toxikologisch und öko...

  2. RNA-Seq-basierte Isolierung des Resistenzgens Bs4C aus Paprika

    OpenAIRE

    Strauß, Tina

    2015-01-01

    Das Paprika Resistenzgen Bs4C aus Capsicum pubescens vermittelt Resistenz gegenüber Xanthomonas campestris pv. vesicatoria (Xcv)-Stämmen, die den (transcription activator-like) TAL-Effektor AvrBs4 exprimieren. Vorangegangene Arbeiten ließen vermuten, dass AvrBs4 die Expression von Bs4C transkriptionell induziert. In einem “proof of principle”-Experiment, wurde Bs4C unter Verwendung eines RNA-Seq-basierten Ansatzes isoliert. Unter 68 differentiell AvrBs4-induzierten Paprikagenen war jedoch nur...

  3. Ein Insektenrest (Odonata, Meganisoptera) aus dem Ober-Karbon des Piesberges bei Osnabrück

    OpenAIRE

    Brauckmann, Carsten

    1983-01-01

    Der erste Insektenrest (linker Vorder- und Hinterflügel) aus Gesteinen des Westfalium D (Ober-Karbon = Silesium) vom Piesberg N'Osnabrück wird als Erasipterella piebergensis n. g. n. sp. beschrieben und abgebildet. Er gehört in die nächste Verwandtschaft der ältesten bekannten Libellen-Gattung Erasipteron (Ordnung Odonata; Unterordnung Meganisoptera), unterscheidet sich von dieser aber vornehmlich durch die wesentlich kleineren Ausmaße, den weniger schlanken Flügel-Umriß und die stärkere Aufl...

  4. Para uma sociologia das ausências e uma sociologia das emergências

    Directory of Open Access Journals (Sweden)

    Boaventura de Sousa Santos

    2012-10-01

    Full Text Available Procede‑se a uma crítica do modelo de racionalidade ocidental – o modelo de uma razão indolente – propondo‑se os prolegómenos de um outro modelo, o de uma razão cosmopolita. Procura‑se fundar três procedimentos sociológicos nesta razão cosmopolita: a sociologia das ausências, a sociologia das emergências e o trabalho de tradução.

  5. Zusammenhänge zwischen Cyberbullying und Bullying – erste Ergebnisse aus einer Selbstberichtsstudie

    OpenAIRE

    Wachs, Sebastian; Wolf, Karsten D.

    2011-01-01

    Wenn Lis (2007) Annahme zutrifft, dass das neue Phänomen Cyberbullying nichts anderes ist als „alter Wein in neuen Schläuchen“, dann sind viele Cyberbullies und Cybervictims gleich-zeitig auch Bullies und Victims im realen Leben. Weitere Ziele waren, die Prävalenz von (Cyber-)Bullying zu messen und die Gemeinsamkeiten und Unterschiede beider Formen zu untersuchen. Die Studie wurde als Online-Umfrage nach der CAPI-Methode umgesetzt. Das Sample besteht aus 838 Jugendlichen (von 11-17 Jahren), d...

  6. YEAR 2 BIOMASS UTILIZATION

    Energy Technology Data Exchange (ETDEWEB)

    Christopher J. Zygarlicke

    2004-11-01

    This Energy & Environmental Research Center (EERC) Year 2 Biomass Utilization Final Technical Report summarizes multiple projects in biopower or bioenergy, transportation biofuels, and bioproducts. A prototype of a novel advanced power system, termed the high-temperature air furnace (HITAF), was tested for performance while converting biomass and coal blends to energy. Three biomass fuels--wood residue or hog fuel, corn stover, and switchgrass--and Wyoming subbituminous coal were acquired for combustion tests in the 3-million-Btu/hr system. Blend levels were 20% biomass--80% coal on a heat basis. Hog fuel was prepared for the upcoming combustion test by air-drying and processing through a hammer mill and screen. A K-Tron biomass feeder capable of operating in both gravimetric and volumetric modes was selected as the HITAF feed system. Two oxide dispersion-strengthened (ODS) alloys that would be used in the HITAF high-temperature heat exchanger were tested for slag corrosion rates. An alumina layer formed on one particular alloy, which was more corrosion-resistant than a chromia layer that formed on the other alloy. Research activities were completed in the development of an atmospheric pressure, fluidized-bed pyrolysis-type system called the controlled spontaneous reactor (CSR), which is used to process and condition biomass. Tree trimmings were physically and chemically altered by the CSR process, resulting in a fuel that was very suitable for feeding into a coal combustion or gasification system with little or no feed system modifications required. Experimental procedures were successful for producing hydrogen from biomass using the bacteria Thermotoga, a deep-ocean thermal vent organism. Analytical procedures for hydrogen were evaluated, a gas chromatography (GC) method was derived for measuring hydrogen yields, and adaptation culturing and protocols for mutagenesis were initiated to better develop strains that can use biomass cellulose. Fly ash derived from

  7. YEAR 2 BIOMASS UTILIZATION

    Energy Technology Data Exchange (ETDEWEB)

    Christopher J. Zygarlicke

    2004-11-01

    This Energy & Environmental Research Center (EERC) Year 2 Biomass Utilization Final Technical Report summarizes multiple projects in biopower or bioenergy, transportation biofuels, and bioproducts. A prototype of a novel advanced power system, termed the high-temperature air furnace (HITAF), was tested for performance while converting biomass and coal blends to energy. Three biomass fuels--wood residue or hog fuel, corn stover, and switchgrass--and Wyoming subbituminous coal were acquired for combustion tests in the 3-million-Btu/hr system. Blend levels were 20% biomass--80% coal on a heat basis. Hog fuel was prepared for the upcoming combustion test by air-drying and processing through a hammer mill and screen. A K-Tron biomass feeder capable of operating in both gravimetric and volumetric modes was selected as the HITAF feed system. Two oxide dispersion-strengthened (ODS) alloys that would be used in the HITAF high-temperature heat exchanger were tested for slag corrosion rates. An alumina layer formed on one particular alloy, which was more corrosion-resistant than a chromia layer that formed on the other alloy. Research activities were completed in the development of an atmospheric pressure, fluidized-bed pyrolysis-type system called the controlled spontaneous reactor (CSR), which is used to process and condition biomass. Tree trimmings were physically and chemically altered by the CSR process, resulting in a fuel that was very suitable for feeding into a coal combustion or gasification system with little or no feed system modifications required. Experimental procedures were successful for producing hydrogen from biomass using the bacteria Thermotoga, a deep-ocean thermal vent organism. Analytical procedures for hydrogen were evaluated, a gas chromatography (GC) method was derived for measuring hydrogen yields, and adaptation culturing and protocols for mutagenesis were initiated to better develop strains that can use biomass cellulose. Fly ash derived from

  8. SERI Biomass Program

    Science.gov (United States)

    Bergeron, P. W.; Corder, R. E.; Hill, A. M.; Lindsey, H.; Lowenstein, M. Z.

    1983-02-01

    The biomass with which this report is concerned includes aquatic plants, which can be converted into liquid fuels and chemicals; organic wastes (crop residues as well as animal and municipal wastes), from which biogas can be produced via anerobic digestion; and organic or inorganic waste streams, from which hydrogen can be produced by photobiological processes. The Biomass Program Office supports research in three areas which, although distinct, all use living organisms to create the desired products. The Aquatic Species Program (ASP) supports research on organisms that are themselves processed into the final products, while the Anaerobic Digestion (ADP) and Photo/Biological Hydrogen Program (P/BHP) deals with organisms that transform waste streams into energy products. The P/BHP is also investigating systems using water as a feedstock and cell-free systems which do not utilize living organisms. This report summarizes the progress and research accomplishments of the SERI Biomass Program during FY 1982.

  9. Biomass for bioenergy

    DEFF Research Database (Denmark)

    Bentsen, Niclas Scott

    . With emphasis on the potential of bioenergy from agricultural crop residues the production of residues from six major crops are analysed on global scale. Crops included are barley, maize, rice, soy bean, sugar cane and wheat, which together cover approximately 50 % of the world’s arable land. The analysis finds......)energy applications. The main objective of the work presented here has been to explore the options for increasing the use of biomass in energy systems and how to optimise the use of biomass in energy systems. Main findings Residues from agriculture and forestry, dedicated energy crops and waste make up the primary...... significant biomass resources. The only resource exhibiting substantial future potential to increase is energy crops on former agricultural or degraded lands. Energy crop production is estimated to have a potential to increase from its current (2010) level of 2-3 EJ per year to 22-34 EJ per year by 2100...

  10. Aerosols from biomass combustion

    Energy Technology Data Exchange (ETDEWEB)

    Nussbaumer, T.

    2001-07-01

    This report is the proceedings of a seminar on biomass combustion and aerosol production organised jointly by the International Energy Agency's (IEA) Task 32 on bio energy and the Swiss Federal Office of Energy (SFOE). This collection of 16 papers discusses the production of aerosols and fine particles by the burning of biomass and their effects. Expert knowledge on the environmental impact of aerosols, formation mechanisms, measurement technologies, methods of analysis and measures to be taken to reduce such emissions is presented. The seminar, visited by 50 participants from 11 countries, shows, according to the authors, that the reduction of aerosol emissions resulting from biomass combustion will remain a challenge for the future.

  11. Biomass Deconstruction and Recalcitrance

    DEFF Research Database (Denmark)

    Zhang, Heng

    This thesis is about the use of an agricultural residue as a feedstock for fermentable sugars to be used for second generation (2G) bioethanol. The main focus of this thesis work is upon the recalcitrance of different anatomical fractions of wheat straw. Biomass recalcitrance is a collective...... system, a plate incubator and a high performance liquid chromatography (HPLC) system. In comparison with the reported HTS platforms, the Copenhagen platform is featured by the fully automatic biomass sample preparation system, the bench-scale hydrothermal pretreatment setup, and precise sugar measurement...... biomass based 2G bioethanol industrialization will need cooperative efforts from biologists, plant researchers and processing engineers. It is the hope that this thesis may contribute to this development process....

  12. Hydrothermal liquefaction of biomass

    DEFF Research Database (Denmark)

    Toor, Saqib; Rosendahl, Lasse; Hoffmann, Jessica;

    2014-01-01

    into biochemical/biotechnical methods and thermochemical methods; such as direct combustion, pyrolysis, gasification, liquefaction etc. This chapter will focus on hydrothermal liquefaction, where high pressures and intermediate temperatures together with the presence of water are used to convert biomass...... into liquid biofuels, with the aim of describing the current status and development challenges of the technology. During the hydrothermal liquefaction process, the biomass macromolecules are first hydrolyzed and/or degraded into smaller molecules. Many of the produced molecules are unstable and reactive...

  13. Clean fuels from biomass

    Science.gov (United States)

    Hsu, Y.-Y.

    1976-01-01

    The paper discusses the U.S. resources to provide fuels from agricultural products, the present status of conversion technology of clean fuels from biomass, and a system study directed to determine the energy budget, and environmental and socioeconomic impacts. Conversion processes are discussed relative to pyrolysis and anaerobic fermentation. Pyrolysis breaks the cellulose molecules to smaller molecules under high temperature in the absence of oxygen, wheras anaerobic fermentation is used to convert biomass to methane by means of bacteria. Cost optimization and energy utilization are also discussed.

  14. Biomass stoves in dwellings

    DEFF Research Database (Denmark)

    Luis Teles de Carvalho, Ricardo

    and analyzed in this session. Experimental results regarding the performance of biomass combustion stoves and the effects of real-life practices in terms of thermal efficiency, particulate and gaseous emissions will be addressed. This research is based on the development of a new testing approach that...... combines laboratory and field measurements established in the context of the implications of the upcoming eco-design directive. The communication will cover technical aspects concerning the operating performance of different types of biomass stoves and building envelopes, in order to map the ongoing...

  15. Biomass living energy

    International Nuclear Information System (INIS)

    Any energy source originating from organic matter is biomass, which even today is the basic source of energy for more than a quarter of humanity. Best known for its combustible properties, biomass is also used to produce biofuels. This information sheet provides also information on the electricity storage from micro-condensers to hydroelectric dams, how to save energy facing the increasing of oil prices and supply uncertainties, the renewable energies initiatives of Cork (Ireland) and the Switzerland european energy hub. (A.L.B.)

  16. Method for pretreating lignocellulosic biomass

    Science.gov (United States)

    Kuzhiyil, Najeeb M.; Brown, Robert C.; Dalluge, Dustin Lee

    2015-08-18

    The present invention relates to a method for pretreating lignocellulosic biomass containing alkali and/or alkaline earth metal (AAEM). The method comprises providing a lignocellulosic biomass containing AAEM; determining the amount of the AAEM present in the lignocellulosic biomass; identifying, based on said determining, the amount of a mineral acid sufficient to completely convert the AAEM in the lignocellulosic biomass to thermally-stable, catalytically-inert salts; and treating the lignocellulosic biomass with the identified amount of the mineral acid, wherein the treated lignocellulosic biomass contains thermally-stable, catalytically inert AAEM salts.

  17. Ausência de expectativa de suporte para o cuidado aos idosos da comunidade

    Directory of Open Access Journals (Sweden)

    Déborah Cristina de Oliveira

    2016-06-01

    Full Text Available RESUMO Objetivo: identificar fatores associados à ausência de expectativa de suporte para o cuidado aos idosos da comunidade. Método: foram utilizados parte dos dados do estudo multicêntrico "Fragilidade em Idosos Brasileiros", pesquisa quantitativa, epidemiológica e transversal desenvolvida no período de 2008 a 2009. Foram realizadas análises de comparação e regressão dos dados de 671 idosos. Resultados: a avaliação da expectativa de suporte para o cuidado aos idosos mostrou-se um bom indicador de risco para ausência de expectativa de suporte em mulheres, idosos que residiam sozinhos e com percepção ruim da própria saúde. Conclusão: conclui-se que é preciso refletir sobre o sistema de suporte oferecido aos idosos no Brasil, visto que o perfil destes que estão em risco é cada vez maior na população. Ressalta-se também a importância da inserção de métodos subjetivos para avaliação da percepção dos idosos sobre suporte para o cuidado.

  18. Energy-saving PUR window profiles. Final report; Energiesparende Fensterprofile aus PUR. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Kleiss, J.

    2000-06-01

    Window frames are important constructional elements and may cause significant heat loss. The STABAU company developed a new system of PUR window profiles that comply with the standards set for passive buildings. The project comprised the development and production of the new materials and the development, testing and production of profiles with optimal thermal insulation characteristics. Several passive buildings have already been equipped with the new window profiles. [German] Der Bewilligungsempfaenger ist ein im Fensterbau taetiges Unternehmen mit eigenem Profilsystem aus Polyurethan=PUR. Im Zuge der allgemein steigenden Anforderungen an die Waermedaemmung von Wandbauteilen, speziell Fenstern und Tueren, sowie nach Markt-Einfuehrung der bedampften Isolierglasscheiben mit wesentlich verbesserten Waerme-Daemmwerten stellten die Rahmenmaterialien einen wesentlichen Schwachpunkt in der Waermedaemmung von Bauteilen dar. Fuer die ueber den Standard hinausgehenden Anwendungen bei Niedrigst-Energie- und besonders bei sog. Passiv-Haeusern gab es kaum anspruchsgerechte Loesungen. Dem Antragsteller gelang es nun durch Weiterentwicklung seines bewaehrten Standard-Systems dieses im Daemmwert auf das heute bei 2-fach Isolierglas uebliche Niveau zu bringen und ausserdem dieses Profil mittels zusaetzlicher Daemmschalen aus PUR auf Passivhaus-Niveau aufzuruesten. Die Vorgehensweise bestand im Wesentlichen in der Schaffung von neuen, thermisch getrennten Verstaerkungsprofilen im Inneren des Profils einschliesslich deren technologischer Einfuehrung sowie der Entwicklung, Erprobung und Herstellung von Schalen-Profilen mit besonders guten Daemmwerten. Das Projekt wurde abgeschlossen mit einem ueberzeugenden Pruefnachweis der angestrebten Daemmeigenschaften und der praktischen Ausfuehrung einer Reihe von Niedrigstenergie- und Passivhaus-Objekten. (orig.)

  19. Famennium-Anthozoa aus Marokko. 1. Czarnockia Różkowska, 1969 (Rugosa

    Directory of Open Access Journals (Sweden)

    D. Weyer

    2002-01-01

    Full Text Available Aus Cephalopoda-Kalken der mittleren/oberen Clymenia-Stufe (Niveau mit Gonioclymenia des Tafilalt im Anti-Atlas ist Czarnockia maroccana n. sp. beschrieben. Die Kollektion von 7 Polyparen zeigt eine erhebliche innerartliche Variabilität, die nur mit ausführlichen Schliffserien aller subtabularen und calicularen Regionen erfassbar wird. Das seltene, bisher allein aus der Wocklumeria-Stufe des Heiligkreuz-Gebirges in Polen bekannte Petraiidae-Genus – Endglied einer phylogenetischen Reihe Neaxon → Petraia → Famennelasma → Czarnockia – ist erstmals in einem weitern Verbreitungsareal nachgewiesen, dürfte aber kosmopolitisch in der Psychrosphäre (Cyathaxonia-Fazies des Ober-Famennium anzutreffen sein. Famennian Anthozoa from Morocco. 1. Czarnockia Różkowska, 1969 (Rugosa The new species Czarnockia maroccana is described from cephalopod limestones of the middle/upper Clymenia genozone (level with Gonioclymenia in the Tafilalt district of the Anti Atlas region. The small collection of seven syntypes demonstrates a surprising intraspecific variation visible only after intensive serial sectioning of all subtabular and calicular parts of the skeleton. This is the first record of the rare genus from a second area outside the type occurrence in the Wocklumeria genozone of the Polish Holy Cross Mountains. As a member of the phyletic line Neaxon → Petraia → Famennelasma → Czarnockia, the taxon should be found cosmopolitically in the psychrospheric Cyathaxonia facies of Upper Famennian times. doi:10.1002/mmng.20020050106

  20. Time-lapse-Embryomonitoring und Oozytenvitrifikation: Neue Verfahren in der Reproduktionsmedizin aus ethischer Sicht

    Directory of Open Access Journals (Sweden)

    Kreß H

    2013-01-01

    Full Text Available Zurzeit zeigt sich der stetige technische Fortschritt der Reproduktionsmedizin an zwei neuen Verfahren. Es geht um die Möglichkeit, außerkörperlich erzeugte Embryonen in neuartigen Inkubatorsystemen zu beobachten (Time-lapse-Monitoring, und um die Kryokonservierung von Eizellen (Oozytenvitrifikation. Das Einfrieren von Eizellen kann in Frage kommen, wenn eine Frau einen Kinderwunsch aus persönlichen oder sozialen Gründen auf einen späteren Zeitpunkt verschieben möchte („social egg freezing“ oder wenn sie sich aus Krankheitsgründen einer keimzellschädigenden Behandlung aussetzen lassen muss (medizinisch indizierte Vitrifikation. Der Artikel beleuchtet diese unterschiedlichen Handlungsoptionen unter ethischen Aspekten. Er wägt jeweils ihre normative Verträglichkeit, ihre Humanverträglichkeit und ihre Sozialverträglichkeit ab und hält sie – bei manchen Differenzen, die im Einzelnen bestehen – insgesamt für ethisch vertretbar. Für konkrete Entscheidungen kommt es auf den Einzelfall und auf die Einzelumstände an.

  1. Biomass co-firing

    DEFF Research Database (Denmark)

    Yin, Chungen

    2013-01-01

    Co-firing biomass with fossil fuels in existing power plants is an attractive option for significantly increasing renewable energy resource utilization and reducing CO2 emissions. This chapter mainly discusses three direct co-firing technologies: pulverized-fuel (PF) boilers, fluidized...

  2. Biomass Scenario Model

    Energy Technology Data Exchange (ETDEWEB)

    2015-09-01

    The Biomass Scenario Model (BSM) is a unique, carefully validated, state-of-the-art dynamic model of the domestic biofuels supply chain which explicitly focuses on policy issues, their feasibility, and potential side effects. It integrates resource availability, physical/technological/economic constraints, behavior, and policy. The model uses a system dynamics simulation (not optimization) to model dynamic interactions across the supply chain.

  3. Biomass Conversion Factsheet

    Energy Technology Data Exchange (ETDEWEB)

    None

    2016-06-05

    To efficiently convert algae, diverse types of cellulosic biomass, and emerging feedstocks into renewable fuels, the U.S. Department of Energy (DOE) supports research, development, and demonstration of technologies. This research will help ensure that these renewable fuels are compatible with today’s vehicles and infrastructure.

  4. Identifizierung von direkten Zielgenen des homöotischen Transkriptionsfaktors DEFICIENS aus Antirrhinum majus mittels Chromatin Immunopräzipitation

    OpenAIRE

    Müller, Bettina M.

    2003-01-01

    Die Blüten angiospermer Pflanzen bestehen aus morphologisch distinkten Organen, die in vier Wirteln angeordnet sind. Im ersten Wirtel werden Sepalen, im zweiten Petalen, im dritten Stamina und im vierten Karpelle angelegt. In Antirrhinum üben die MADS-Box Transkriptionsfaktoren DEFICIENS (DEF) und GLOBOSA (GLO) Schlüsselfunktionen bei der Ausprägung der Petalen und Stamina aus. Der Funktionsverlust von DEF oder GLO resultiert in einer homöotischen Umformung von Petalen zu Sepalen und von Stam...

  5. Språkexperiment, språkskepsis, identifikationer: Rilkes diktsvit Aus dem Nachlaß des Grafen C. W.

    OpenAIRE

    Landgren, Bengt

    2011-01-01

    This essay examines a lesser known poetic cycle by Rainer Maria Rilke (1875–1926): Aus dem Nachlaß des Grafen C. W. ("Posthumous Poems by Count C. W."). Written in November, 1920 (Part I), and March, 1921 (Part II), when Rilke for some months was staying in an old mansion ("Schloß Berg") in the northwestern part of Switzerland, this poetic cycle remained unpub­lished until 1950. Aus dem Nachlaß des Grafen C. W. has been interpreted in different ways. One scholar (I. Schnack) suggests that it ...

  6. Topologie und Relativbewegungen stielbildender Untereinheiten der V1-ATPase aus der Tabakschwärmerraupe Manduca sexta

    OpenAIRE

    Rizzo, Vincenzo Filippo

    2004-01-01

    Durch Ablösen einzelner Untereinheiten mit Hilfe des Detergens Lauryldimethyloxid (LDAO) konnten aus der V1ATPase (A3:B3:C:D:E:F:G2:Hy) aus Manduca sexta hydrolytisch aktive Subkomplexe gewonnen werden. Diese waren A3B3DEG (176% Hydrolyseaktivität relativ zur V1ATPase), A3B3HEGF (53 %), A3B3EG (58 %) und A3B3DEGH (47 %). Der zur Hydrolyse minimal notwendige A3B3EG-Subkomplex wurde hinsichtlich der Lage der Stieluntereinheiten E und G elektronenmikroskopisch untersucht. Die Bildanalyse der mit...

  7. Mikrobiologische und biochemische Analyse der Fermentationseigenschaften von Lactobacillus paralimentarius AL28 und Lactobacillus plantarum AL30 in Sauerteigen aus Pseudozerealien

    OpenAIRE

    Vogel, Antje

    2011-01-01

    Pseudozerealien besitzen kein Gluten und sind daher für Menschen mit Zöliakie von Bedeutung. Es gibt derzeit keine kommerziell erhältlichen Starterkulturen für Sauerteige aus Pseudozerealien. In der vorliegenden Arbeit wurden die Stämme L. paralimentarius AL28 und L. plantarum AL30 in ihrer Eignung als Starterkulturen für Sauerteige aus Pseudozerealien evaluiert. In den Analysen wurden Amaranth und Buchweizen eingesetzt. Die Teige wurden im Labormaßstab bei 30°C und einer Teigausbeute 200...

  8. Charakterisierung von Möhren und Weizen aus ökologischem und konventionellem Anbau anhand ihrer Carotinoid- und Polyphenolkonzentration

    OpenAIRE

    Roose, Marco

    2007-01-01

    Kurzfassung: Der Markt für ökologische Lebensmittel wächst stark. Verbraucher kaufen Produkte aus ökologischem Landbau aus einer Vielzahl von Gründen. Ein Teil dieser Gründe lässt sich nicht auf die Produktqualität zurückführen, sondern beruht auf der Annahme, dass sich der Produktionsprozess des Ökologischen Landbaus hinsichtlich der Schonung von Umweltressourcen, der Nachhaltigkeit der Produktion und sozialen Komponenten vom konventionellen Anbau unterscheidet. Daneben spielt der Wunsch nac...

  9. Carbon Fiber from Biomass

    Energy Technology Data Exchange (ETDEWEB)

    Milbrandt, Anelia [Clean Energy Manufacturing Analysis Center, Godlen, CO (United States); Booth, Samuel [Clean Energy Manufacturing Analysis Center, Godlen, CO (United States)

    2016-09-01

    Carbon fiber (CF), known also as graphite fiber, is a lightweight, strong, and flexible material used in both structural (load-bearing) and non-structural applications (e.g., thermal insulation). The high cost of precursors (the starting material used to make CF, which comes predominately from fossil sources) and manufacturing have kept CF a niche market with applications limited mostly to high-performance structural materials (e.g., aerospace). Alternative precursors to reduce CF cost and dependence on fossil sources have been investigated over the years, including biomass-derived precursors such as rayon, lignin, glycerol, and lignocellulosic sugars. The purpose of this study is to provide a comprehensive overview of CF precursors from biomass and their market potential. We examine the potential CF production from these precursors, the state of technology and applications, and the production cost (when data are available). We discuss their advantages and limitations. We also discuss the physical properties of biomass-based CF, and we compare them to those of polyacrylonitrile (PAN)-based CF. We also discuss manufacturing and end-product considerations for bio-based CF, as well as considerations for plant siting and biomass feedstock logistics, feedstock competition, and risk mitigation strategies. The main contribution of this study is that it provides detailed technical and market information about each bio-based CF precursor in one document while other studies focus on one precursor at a time or a particular topic (e.g., processing). Thus, this publication allows for a comprehensive view of the CF potential from all biomass sources and serves as a reference for both novice and experienced professionals interested in CF production from alternative sources.

  10. Enzymes for improved biomass conversion

    Energy Technology Data Exchange (ETDEWEB)

    Brunecky, Roman; Himmel, Michael E.

    2016-02-02

    Disclosed herein are enzymes and combinations of the enzymes useful for the hydrolysis of cellulose and the conversion of biomass. Methods of degrading cellulose and biomass using enzymes and cocktails of enzymes are also disclosed.

  11. Molekulare Analysen der Wirkung von Anthocyanen und antimikrobiellen Peptiden aus Insekten auf das Wachstum von Listeria monocytogenes und pathogenen Escherichia coli

    OpenAIRE

    Herges, Lea Sophie

    2014-01-01

    Aufgrund der Verbreitung von Antibiotikaresistenzen bei pathogenen Mikroorganismen über vertikalen und horizontalen Gentransfer ist die Suche nach neuen Antiinfektiva ein bedeutsames Forschungsfeld. Gegenstand dieser Untersuchung sind Naturstoffe wie Anthocyane aus Beerenextrakten, denen gesundheitsfördernde, antioxidative Eigenschaften zugeschrieben werden, und antimikrobiellen Peptiden (AMP) aus Insekten. Anthocyan-haltige Beerenextrakte und AMP wurden in vitro im Mikrotiterplatten-Screenin...

  12. Romania biomass energy. Country study

    International Nuclear Information System (INIS)

    The present report was prepared under contract to UNIDO to conduct a case study of biomass energy use and potential in Romania. The purpose of the case study is to provide a specific example of biomass energy issues and potential in the context of the economic transition under way in eastern Europe. The transition of Romania to a market economy is proceeding at a somewhat slower pace than in other countries of eastern Europe. Unfortunately, the former regime forced the use of biomass energy with inadequate technology and infrastructure, particularly in rural areas. The resulting poor performance thus severely damaged the reputation of biomass energy in Romania as a viable, reliable resource. Today, efforts to rejuvenate biomass energy and tap into its multiple benefits are proving challenging. Several sound biomass energy development strategies were identified through the case study, on the basis of estimates of availability and current use of biomass resources; suggestions for enhancing potential biomass energy resources; an overview of appropriate conversion technologies and markets for biomass in Romania; and estimates of the economic and environmental impacts of the utilization of biomass energy. Finally, optimal strategies for near-, medium- and long-term biomass energy development, as well as observations and recommendations concerning policy, legislative and institutional issues affecting the development of biomass energy in Romania are presented. The most promising near-term biomass energy options include the use of biomass in district heating systems; cofiring of biomass in existing coal-fired power plants or combined heat and power plants; and using co-generation systems in thriving industries to optimize the efficient use of biomass resources. Mid-term and long-term opportunities include improving the efficiency of wood stoves used for cooking and heating in rural areas; repairing the reputation of biogasification to take advantage of livestock wastes

  13. Biomass and biomass change in lodgepole pine stands in Alberta.

    Science.gov (United States)

    Monserud, Robert A; Huang, Shongming; Yang, Yuqing

    2006-06-01

    We describe methods and results for broad-scale estimation and mapping of forest biomass for the Canadian province of Alberta. Differences over successive decades provided an estimate of biomass change. Over 1500 permanent sample plots (PSP) were analyzed from across the range of lodgepole pine (Pinus contorta var. latifolia Engelm.), the major forest tree species of Alberta. The PSP network is densest in stands aged between 70 and 100 years and is well-represented by stands of all ages to 150 years of age. Stand biomass (Mg ha(-1)) was estimated for each PSP plot as the sum of the respective biomass components for each tree (live and standing dead). The biomass components for live trees were stem, bark, branches, foliage and roots. The components for standing dead trees excluded foliage. Equations from previous biomass studies were used for biomass component estimation. Biomass estimates of additional non-tree components were attempted, but without much success. Biomass of the soil organic layer was estimated once on 452 PSPs and a mean estimate of total dead fuels on the ground (28.4 Mg ha(-1)) was available only for the entire distribution of lodgepole pine. However, values of these two components were essentially constant over time and therefore did not alter the analysis or conclusions obtained by analyzing total tree biomass alone. We then used this spatial network of 1549 plots as the basis for mapping biomass across Alberta. Mapping methods were based on Australian National University SPLINe (ANUSPLIN) software, Hutchinson's thin-plate smoothing spline in four dimensions (latitude, longitude, elevation and biomass). Total tree biomass (mean = 172 Mg ha(-1)) was dominated by stem biomass (mean = 106 Mg ha(-1)), which was an order of magnitude greater than the mean estimates for the bark (11 Mg ha(-1)), branch (12 Mg ha(-1)) and foliage (12 Mg ha(-1)) components. A close relationship was found between total tree biomass and stand stem volume (R(2) = 0

  14. Biomass gasification in the Netherlands

    Energy Technology Data Exchange (ETDEWEB)

    Van der Drift, A. [ECN Biomass and Energy Efficiency, Petten (Netherlands)

    2013-07-15

    This reports summarizes the activities, industries, and plants on biomass gasification in the Netherlands. Most of the initiatives somehow relate to waste streams, rather than clean biomass, which may seem logic for a densely populated country as the Netherlands. Furthermore, there is an increasing interest for the production of SNG (Substitute Natural Gas) from biomass, both from governments and industry.

  15. High Pressure Biomass Gasification

    Energy Technology Data Exchange (ETDEWEB)

    Agrawal, Pradeep K

    2016-07-29

    According to the Billion Ton Report, the U.S. has a large supply of biomass available that can supplement fossil fuels for producing chemicals and transportation fuels. Agricultural waste, forest residue, and energy crops offer potential benefits: renewable feedstock, zero to low CO2 emissions depending on the specific source, and domestic supply availability. Biomass can be converted into chemicals and fuels using one of several approaches: (i) biological platform converts corn into ethanol by using depolymerization of cellulose to form sugars followed by fermentation, (ii) low-temperature pyrolysis to obtain bio-oils which must be treated to reduce oxygen content via HDO hydrodeoxygenation), and (iii) high temperature pyrolysis to produce syngas (CO + H2). This last approach consists of producing syngas using the thermal platform which can be used to produce a variety of chemicals and fuels. The goal of this project was to develop an improved understanding of the gasification of biomass at high pressure conditions and how various gasification parameters might affect the gasification behavior. Since most downstream applications of synags conversion (e.g., alcohol synthesis, Fischer-Tropsch synthesis etc) involve utilizing high pressure catalytic processes, there is an interest in carrying out the biomass gasification at high pressure which can potentially reduce the gasifier size and subsequent downstream cleaning processes. It is traditionally accepted that high pressure should increase the gasification rates (kinetic effect). There is also precedence from coal gasification literature from the 1970s that high pressure gasification would be a beneficial route to consider. Traditional approach of using thermogravimetric analyzer (TGA) or high-pressure themogravimetric analyzer (PTGA) worked well in understanding the gasification kinetics of coal gasification which was useful in designing high pressure coal gasification processes. However, similar approach for

  16. High Pressure Biomass Gasification

    Energy Technology Data Exchange (ETDEWEB)

    Agrawal, Pradeep K [Georgia Tech Research Corporation, Atlanta, GA (United States)

    2016-07-29

    According to the Billion Ton Report, the U.S. has a large supply of biomass available that can supplement fossil fuels for producing chemicals and transportation fuels. Agricultural waste, forest residue, and energy crops offer potential benefits: renewable feedstock, zero to low CO2 emissions depending on the specific source, and domestic supply availability. Biomass can be converted into chemicals and fuels using one of several approaches: (i) biological platform converts corn into ethanol by using depolymerization of cellulose to form sugars followed by fermentation, (ii) low-temperature pyrolysis to obtain bio-oils which must be treated to reduce oxygen content via HDO hydrodeoxygenation), and (iii) high temperature pyrolysis to produce syngas (CO + H2). This last approach consists of producing syngas using the thermal platform which can be used to produce a variety of chemicals and fuels. The goal of this project was to develop an improved understanding of the gasification of biomass at high pressure conditions and how various gasification parameters might affect the gasification behavior. Since most downstream applications of synags conversion (e.g., alcohol synthesis, Fischer-Tropsch synthesis etc) involve utilizing high pressure catalytic processes, there is an interest in carrying out the biomass gasification at high pressure which can potentially reduce the gasifier size and subsequent downstream cleaning processes. It is traditionally accepted that high pressure should increase the gasification rates (kinetic effect). There is also precedence from coal gasification literature from the 1970s that high pressure gasification would be a beneficial route to consider. Traditional approach of using thermogravimetric analyzer (TGA) or high-pressure themogravimetric analyzer (PTGA) worked well in understanding the gasification kinetics of coal gasification which was useful in designing high pressure coal gasification processes. However

  17. Termisk forgasning af biomasse

    DEFF Research Database (Denmark)

    Henriksen, Ulrik Birk

    2005-01-01

    of these activities has been fruitful. The two- stage gasifier was developed for gasification aiming at decentralised cogeneration of heat and power. The development ranged from lap-top scale equipment to a fully automatic plant with more than 2000 hours of operation. Compared to most other gasification processes...... and development. The advantages of that process is, that the main parts of the inorganic species from the biomass, which are undesirable in the power plant, is deposed in the ashes in the gasifier without the use of gas cleaning equipment. Originally the purpose of the activities was to find gasification...... to thermal gasification of biomass. Focus is on gasification for decentralised cogeneration of heat and power, and on related research on fundamental processes. In order to insure continuity of the presentation the other activities in the group, have also been described. The group was started in the late...

  18. BIOMASS newsletter. No. 8

    International Nuclear Information System (INIS)

    The International Atomic Energy Agency Programme on Biosphere Modelling and Assessment (BIOMASS) Newsletter has been launched with general objectives of providing an international focal point in the area of biosphere assessment modelling, developing methods for analysis of radionuclide transfer in the biosphere for use in radiological assessment, improving modelling methods, and developing international consensus on biosphere modelling philosophies, approaches and parameter values. The main themes included in the Newsletter include radioactive waste disposal (reference biosphere), environmental releases and biosphere processes

  19. BIOMASS newsletter. No. 7

    International Nuclear Information System (INIS)

    The International Atomic Energy Agency Programme on Biosphere Modelling and Assessment (BIOMASS) Newsletter has been launched with general objectives of providing an international focal point in the area of biosphere assessment modelling, developing methods for analysis of radionuclide transfer in the biosphere for use in radiological assessment, improving modelling methods, and developing international consensus on biosphere modelling philosophies, approaches and parameter values. The main themes included in the Newsletter include radioactive waste disposal (reference biosphere), environmental releases and biosphere processes

  20. Differenzielle Wirkung und Wirkungsweise dialektisch-behavioral orientierter Therapie der Borderline-Persönlichkeitsstörung aus Patientenperspektive

    OpenAIRE

    Meißner, Jeannette

    2015-01-01

    Ziel: Nach einem Jahr dialektisch-behavioral orientierter Behandlung von Borderline Patienten im ambulanten Setting werden verschiedene Wirksamkeitskriterien und Therapieprozessvariablen, wie die Qualität der Therapieallianz aus Patientenperspektive untersucht. Methode: In einer naturalistischen Studie absolvierten 47 Borderline-Patienten eine DBT-orientierte Behandlung. Das Therapieergebnis wurde mittels indirekten und direkten Veränderungsmaßen, wie Patientenziele erfasst. Prozessvariablen ...

  1. al-Jumail – Fischerdorf aus der ersten Hälfte des 20. Jahrhunderts im Nordwesten Katars

    DEFF Research Database (Denmark)

    Kinzel, Moritz; Schäfer, Bernadeta

    Zerfallsstadien aufweisen; eine Moschee, eine Schule, Ruinen eines Forts sowie einige Versammlungsbauten ergänzen das Dorfgefüge. Die bislang erhaltenen Bauten – obwohl allesamt aus dem 20. Jahrhundert stammend – wurden nach althergebrachter Bautradition errichtet. Al Jumail wurde in den 1980er Jahren verlassen...

  2. Briefe aus dem Morgenland - Otto Friedrich von Richters Forschungsreise in den Jahren 1814-1816 / Vladimir Sazonov

    Index Scriptorium Estoniae

    Sazonov, Vladimir, 1979-

    2013-01-01

    Arvustus: Briefe aus dem Morgenland - Otto Friedrich von Richters Forschungsreise in den Jahren 1814-1816, hrsg. von Indrek Jürjo, Sergei Stadnikov, Hamburger Beiträge zur Geschichte des östlichen Europa, Bd. 20. Hamburg: Verlag Dr. Kovač 2013, 313 lk.

  3. Commercial Biomass Syngas Fermentation

    Directory of Open Access Journals (Sweden)

    James Daniell

    2012-12-01

    Full Text Available The use of gas fermentation for the production of low carbon biofuels such as ethanol or butanol from lignocellulosic biomass is an area currently undergoing intensive research and development, with the first commercial units expected to commence operation in the near future. In this process, biomass is first converted into carbon monoxide (CO and hydrogen (H2-rich synthesis gas (syngas via gasification, and subsequently fermented to hydrocarbons by acetogenic bacteria. Several studies have been performed over the last few years to optimise both biomass gasification and syngas fermentation with significant progress being reported in both areas. While challenges associated with the scale-up and operation of this novel process remain, this strategy offers numerous advantages compared with established fermentation and purely thermochemical approaches to biofuel production in terms of feedstock flexibility and production cost. In recent times, metabolic engineering and synthetic biology techniques have been applied to gas fermenting organisms, paving the way for gases to be used as the feedstock for the commercial production of increasingly energy dense fuels and more valuable chemicals.

  4. Ethanol from lignocellulosic biomasses

    International Nuclear Information System (INIS)

    In this report are presented results achieved on the process optimisation of bioethanol production from wheat straw, carried out within the ENEA's project of biomass exploitation for renewable energy. The process consists of three main steps: 1) biomass pretreatment by means of steam explosion; 2) enzymatic hydrolysis of the cellulose fraction; 3) fermentation of glucose. To perform the hydrolysis step, two commercial enzymatic mixtures have been employed, mainly composed by β-glucosidase (cellobiase), endo-glucanase and exo-glucanase. The ethanologenic yeast Saccharomyces cerevisiae has been used to ferment the glucose in he hydrolyzates. Hydrolysis yield of 97% has been obtained with steam exploded wheat straw treated at 2200C for 3 minutes and an enzyme to substrate ratio of 4%. It has been pointed out the necessity of washing with water the pretreated what straw, in order to remove the biomass degradation products, which have shown an inhibition effect on the yeast. At the best process conditions, a fermentation yield of 95% has been achieved. In the Simultaneous Saccharification and Fermentation process, a global conversion of 92% has been obtained, which corresponds to the production of about 170 grams of ethanol per kilogram of exploded straw

  5. Ein Versuch, Naturverhältnisse aus feministischer Sicht zu interpretieren

    Directory of Open Access Journals (Sweden)

    Helga Purgand

    2002-07-01

    Full Text Available Mit dem vorliegenden Sammelband Geschlechterverhältnisse – Naturverhältnisse wird nach dem innovativen Beitrag der feministischen Debatte für umweltsoziologisches Denken gefragt und nach Überschneidungen, Grenzen und Zwischenräumen zwischen „Geschlecht“ und „Natur“ gesucht. In ihm wird der lobenswerte Versuch unternommen, einen Zusammenhang zwischen Geschlechter- und Naturverhältnissen herzustellen „die in der Umweltsoziologie bislang stark vernachlässigte feministische Diskussion und Geschlechterforschung einzubeziehen und als genderbezogene Perspektive zu etablieren“. (S. 9 Das Buch enthält Beiträge von 15 Autorinnen, die unterschiedliche Natur- und Geschlechtsverhältnisse facettenreich, überwiegend kreativ und theoretisch anspruchsvoll betrachten. Das Buch enthält Zugänge aus der allgemeinen Soziologie, den Sprach- und Kulturwissenschaften, aus politik- und naturwissenschaftlichen Zusammenhängen. Den ausdrücklich formulierten Anspruch, von multi- zu einer inter-disziplinären Durchdringung zu gelangen, erfüllt es nur in Ansätzen (besonders mit der Einleitung und den theoretischen Problemexplikationen. Das zustande gekommene „Nach-, Zusammen- und Querdenken“ über Begriffe, Theorien und neuere Forschungsansätze (von Foucault über Butler bis zu Donna Haraway belegt die Notwendigkeit, die naturwissenschaftlichen Annahmen „immanent zu dekonstruieren“. Sehr aufschlussreich sind in diesem Zusammenhang die Beiträge von Irmgard Schultz, Elvira Scheich, aber auch von Mary Mellor und besonders von Paula-Irene Villa, die interessante und kreative Gedanken zur Klärung des Verhältnisses von Natur, Kultur und Geschlecht anbieten. Deutlich wurde, dass weiterhin ein kontroverses Ringen um angemessene konzeptionelle Fassungen von Geschlechts- und Naturverhältnissen und die Integration von Gender als zentraler analytischer Querschnitts-Kategorie nötig sind. Insgesamt ist dem Buch ist eine schnelle Verbreitung und

  6. Was ist ungerecht? Diskriminierungsebenen aus multiplen Blickwinkeln What is Unjust? Levels of Discrimination from Multiple Perspectives

    Directory of Open Access Journals (Sweden)

    Christoph Sorge

    2008-07-01

    Full Text Available Aus einer interdisziplinären Kolloquiumsreihe im Wintersemester 2004/2005 des Cornelia Goethe Centrums für Frauenstudien und die Erforschung der Geschlechterverhältnisse (CGC ist eine Aufsatzsammlung mit acht Beiträgen entstanden, welche sich mit frauenspezifischen Unrechtserfahrungen auseinandersetzen. Der Facettenreichtum der Aufsatzthemen entspricht dem im Titelkompositum „Unrechtserfahrungen“ ausgedrückten Spannungsverhältnis: Zum einen wird anhand von konkret erlebten Einzelschicksalen und von Darstellungen in der Literatur die Erfahrung von Ungerechtigkeit und Unrecht problematisiert. Zum anderen wird die rechtliche Begrifflichkeit genauer untersucht. Die Autorinnen kommen aus den Bereichen Philologie, Rechts- und Geschichtswissenschaft. Entsprechend bietet der Band eine vielfältige und insgesamt ergiebige Gesamtschau auf die Unrechtserfahrungen von Frauen in Vergangenheit und Gegenwart.This collected volume of eight essays tackles the experience of injustice specific to women. It was born out of an interdisciplinary colloquium during the winter semester of 2004/2005 at the Cornelia Goethe Center for Women’s Studies and the Study of Gender Relations (CGC. The richly varied themes of the essays correspond to the tension expressed in the composite word in the title “unjust-experience”: For one, the volume problematizes the experience of inequality and injustice through individual concrete experience and through literary presentations. In addition, it examines legal terminology in detail. The authors come from the wide-ranging areas of philology, law, and history. Accordingly, the volume offers a diverse and altogether rich overview of women’s experiences of injustice in the past and the present.

  7. Biofuel from "humified" biomass

    Science.gov (United States)

    Kpogbemabou, D.; Lemée, L.; Amblès, A.

    2009-04-01

    In France, 26% of the emissions of greenhouse effect gas originate from transportation which depends for 87% on fossil fuels. Nevertheless biofuels can contribute to the fight against climate change while reducing energetic dependence. Indeed biomass potentially represents in France 30 Mtoe a year that is to say 15% national consumption. But 80% of these resources are made of lignocellulosic materials which are hardly exploitable. First-generation biofuels are made from sugar, starch, vegetable oil, or animal fats. Due to their competition with human food chain, first-generation biofuels could lead to food shortages and price rises. At the contrary second-generation biofuel production can use a variety of non food crops while using the lignocellulosic part of biomass [1]. Gasification, fermentation and direct pyrolysis are the most used processes. However weak yields and high hydrogen need are limiting factors. In France, the National Program for Research on Biofuels (PNRB) aims to increase mobilizable biomass resource and to develop lignocellulosic biomass conversion. In this context, the LIGNOCARB project studies the liquefaction of biodegraded biomass in order to lower hydrogen consumption. Our aim was to develop and optimize the biodegradation of the biomass. Once the reactor was achieved, the influence of different parameters (starting material, aeration, moisture content) on the biotransformation process was studied. The monitored parameters were temperature, pH and carbon /nitrogen ratio. Chemical (IHSS protocol) and biochemical (van Soest) fractionations were used to follow the maturity ("humic acid"/"fulvic acid" ratio) and the biological stability (soluble, hemicelluloses, celluloses, lignin) of the organic matter (OM). In example, the increase in lignin can be related to the stabilization since the OM becomes refractory to biodegradation whereas the increase in the AH/AF ratio traduces "humification". However, contrarily to the composting process, we do

  8. Biomass to energy; La valorisation energetique de la biomasse

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-06-15

    This road-map proposes by the Group Total aims to inform the public on the biomass to energy. It explains the biomass principle, the possibility of biomass to energy conversion, the first generation of biofuels (bio ethanol, ETBE, bio diesel, flex fuel) and their advantages and limitations, the european regulatory framework and policy with the evolutions and Total commitments in the domain. (A.L.B.)

  9. Biomass process handbook

    Energy Technology Data Exchange (ETDEWEB)

    1983-01-01

    Descriptions are given of 42 processes which use biomass to produce chemical products. Marketing and economic background, process description, flow sheets, costs, major equipment, and availability of technology are given for each of the 42 processes. Some of the chemicals discussed are: ethanol, ethylene, acetaldehyde, butanol, butadiene, acetone, citric acid, gluconates, itaconic acid, lactic acid, xanthan gum, sorbitol, starch polymers, fatty acids, fatty alcohols, glycerol, soap, azelaic acid, perlargonic acid, nylon-11, jojoba oil, furfural, furfural alcohol, tetrahydrofuran, cellulose polymers, products from pulping wastes, and methane. Processes include acid hydrolysis, enzymatic hydrolysis, fermentation, distillation, Purox process, and anaerobic digestion.

  10. Ecosystems and biomass energy

    International Nuclear Information System (INIS)

    Biomass, particularly fuelwood and charcoal, is one of the main sources of fuel to meet the energy needs of traditional, commercial and industrial activities in developing countries. While it satisfies only about 14% of the world's primary energy needs, in some countries it satisfies up to 80% of those needs. As a result of population growth, urbanization, economic reforms, restructuring and new development targets in most of these countries, new forms of energy and a more intensive use of energy are expected for the years ahead. This additional demand for energy will be met mainly by hydroelectricity, coal and fossil fuels. However, where biomass is available or can be planted, bio fuels can be converted into new forms of energy (electricity and power) and energy carriers (liquid and gaseous fuels) to meet not only the energy needs of the modem sectors but also to maintain a sustainable supply to traditional users. In fact, FAO estimates that biomass could provide nearly three times more energy than it does without affecting the current supply of other commodities and goods such as food, fodder, fuel, timber and non-wood fuel products. The benefits derived from the utilization of biomass as a source of energy are twofold: (a) the task of supplying bio fuels can help to attract new investment, create new employment and income opportunities in rural areas, raise the value of natural resources and preserve the environment and (b) new forms of energy and energy carriers could foster increased production and productivity at the rural and community level, particularly in remote areas where conventional fuels are not easily available at affordable prices. Bioenergy can be easily developed in modular and decentralized schemes and offers many advantages. It could be an inexpensive source of energy, even at present energy prices, and it requires less capital investment for its implementation than alternative solutions. However, there are many disadvantages, too. For

  11. Hydrothermal Liquefaction of Biomass

    Energy Technology Data Exchange (ETDEWEB)

    Elliott, Douglas C.

    2010-12-10

    Hydrothermal liquefaction technology is describes in its relationship to fast pyrolysis of biomass. The scope of work at PNNL is discussed and some intial results are presented. HydroThermal Liquefaction (HTL), called high-pressure liquefaction in earlier years, is an alternative process for conversion of biomass into liquid products. Some experts consider it to be pyrolysis in solvent phase. It is typically performed at about 350 C and 200 atm pressure such that the water carrier for biomass slurry is maintained in a liquid phase, i.e. below super-critical conditions. In some applications catalysts and/or reducing gases have been added to the system with the expectation of producing higher yields of higher quality products. Slurry agents ('carriers') evaluated have included water, various hydrocarbon oils and recycled bio-oil. High-pressure pumping of biomass slurry has been a major limitation in the process development. Process research in this field faded away in the 1990s except for the HydroThermal Upgrading (HTU) effort in the Netherlands, but has new resurgence with other renewable fuels in light of the increased oil prices and climate change concerns. Research restarted at Pacific Northwest National Laboratory (PNNL) in 2007 with a project, 'HydroThermal Liquefaction of Agricultural and Biorefinery Residues' with partners Archer-Daniels-Midland Company and ConocoPhillips. Through bench-scale experimentation in a continuous-flow system this project investigated the bio-oil yield and quality that could be achieved from a range of biomass feedstocks and derivatives. The project was completed earlier this year with the issuance of the final report. HydroThermal Liquefaction research continues within the National Advanced Biofuels Consortium with the effort focused at PNNL. The bench-scale reactor is being used for conversion of lignocellulosic biomass including pine forest residue and corn stover. A complementary project is an international

  12. „NS-Raubgut aus zweiter Hand“ - Provenienzrecherchen in der Bibliothek des IGdJ

    Directory of Open Access Journals (Sweden)

    Jörn Kreuzer

    2014-12-01

    Full Text Available Das Institut für die Geschichte der deutschen Juden in Hamburg führt im Rahmen des Projekts "NS-Raubgut in der Bibliothek des IGdJ" umfangreiche Recherchen in seinen Buchbeständen durch. Die Untersuchung fügt sich in die Reihe von Forschungsvorhaben, die in der Folge der "Washingtoner Konferenz über Vermögenswerte aus der Zeit des Holocaust" (1998 und der ein Jahr später verabschiedeten "Erklärung der Bundesregierung, der Länder und der kommunalen Spitzenverbände zur Auffindung und zur Rückgabe NS-verfolgungsbedingt entzogenen Kulturgutes, insbesondere aus jüdischem Besitz" in diversen deutschen Bibliotheken, Museen, Archiven und anderen kulturellen Einrichtungen durchgeführt werden. Zurzeit befinden sich in der Bibliothek des IGdJ rund 50.000 Bände. Im Grunde ist bei allen Werken, die vor 1945 erschienen sind, eine Provenienz aus NS-Raub- bzw. NS-Beutegutbeständen möglich. Eine systematische Erfassung und Bearbeitung dieses rund 6.000 bis 9.000 Bände umfassenden Bestandes ist bislang nicht erfolgt. Da die Institutsbibliothek als jüdische Sammlung konzipiert und aufgebaut wurde, verstärkt sich diese Vermutung. Weil das Institut erst 1966 gegründet wurde, handelt es sich wahrscheinlich um "NS-Raubgut aus zweiter Hand“. Eine weitere Aufgabenstellung ergibt sich aus der Tatsache, dass in den Anfangsjahren der Bibliothek keine Zugangsjournale geführt wurden. Somit können in vielen Fällen nur die Bücher selbst Hinweise auf ihre Herkunft geben, weshalb als erste Maßnahme die eingehende Buchautopsie anhand des Zettelkatalogs durchgeführt wird. Der systematischen Suche nach NS-verfolgungsbedingt entzogenem Kulturgut folgt die Dokumentation und Bekanntgabe der Ergebnisse mit dem Ziel der Restitution an die Vorbesitzer oder deren Erben. In einem Werkstattbericht werden erste Ergebnisse vorgestellt. The Institute of the History of the German Jews (Institut für die Geschichte der deutschenJuden, IGdJ is currently conducting a

  13. Entrained Flow Gasification of Biomass

    DEFF Research Database (Denmark)

    Qin, Ke

    . Biomass gasification experiments were performed in a laboratory-scale atmospheric pressure entrained flow reactor with the aim to investigate the effects of operating parameters and biomass types on syngas products. A wide range of operating parameters was involved: reactor temperature, steam/carbon ratio...... remained nearly unchanged with varying mixing ratio during straw/wood co-gasification, while increased gradually with increasing biomass mixing ratio during biomass/coal co-gasification. A mathematic model of biomass entrained flow gasification was developed. The model included mixing, drying and pyrolysis......, char-gas and soot-gas reactions, detailed gas-phase reactions, and mass and heat transfer. The model could reasonable predict the yields of syngas products obtained in the biomass gasification experiments. Moreover, the simulation results suggest that the soot can be completely converted and thereby...

  14. Biomass in Latin America -- overview

    International Nuclear Information System (INIS)

    The paper discusses the interest of the Organization of American States as a participant in this hemispheric conference on biomass, provides an introduction to the Latin American experience in biomass energy through open-quotes snapshotsclose quotes of various country activities, and concludes with a discussion of four conditions that form strong incentives for new north/south and south/north ventures in the biomass energy and chemical arena in this hemisphere

  15. Liquid fuel from biomass

    International Nuclear Information System (INIS)

    Various options for Danish production of liquid motor fuels from biomass have been studied in the context of the impact of EEC new common agricultural policy on prices and production quantities of crops, processes and production economy, restraints concerning present and future markets in Denmark, environmental aspects, in particular substitution of fossil fuels in the overall production and end-use, revenue loss required to assure competition with fossil fuels and national competence in business, industry and research. The options studied are rapeseed oil and derivates, ethanol, methanol and other thermo-chemical conversion products. The study shows that the combination of fuel production and co-generation of heat and electricity carried out with energy efficiency and utilization of surplus electricity is important for the economics under Danish conditions. Considering all aspects, ethanol production seems most favorable but in the long term, pyrolyses with catalytic cracking could be an interesting option. The cheapest source of biomass in Denmark is straw, where a considerable amount of the surplus could be used. Whole crop harvested wheat on land otherwise set aside to be fallow could also be an important source for ethanol production. Most of the options contribute favorably to reductions of fossil fuel consumption, but variations are large and the substitution factor is to a great extent dependent on the individual case. (AB) (32 refs.)

  16. Modelling tree biomasses in Finland

    Energy Technology Data Exchange (ETDEWEB)

    Repola, J.

    2013-06-01

    Biomass equations for above- and below-ground tree components of Scots pine (Pinus sylvestris L), Norway spruce (Picea abies [L.] Karst) and birch (Betula pendula Roth and Betula pubescens Ehrh.) were compiled using empirical material from a total of 102 stands. These stands (44 Scots pine, 34 Norway spruce and 24 birch stands) were located mainly on mineral soil sites representing a large part of Finland. The biomass models were based on data measured from 1648 sample trees, comprising 908 pine, 613 spruce and 127 birch trees. Biomass equations were derived for the total above-ground biomass and for the individual tree components: stem wood, stem bark, living and dead branches, needles, stump, and roots, as dependent variables. Three multivariate models with different numbers of independent variables for above-ground biomass and one for below-ground biomass were constructed. Variables that are normally measured in forest inventories were used as independent variables. The simplest model formulations, multivariate models (1) were mainly based on tree diameter and height as independent variables. In more elaborated multivariate models, (2) and (3), additional commonly measured tree variables such as age, crown length, bark thickness and radial growth rate were added. Tree biomass modelling includes consecutive phases, which cause unreliability in the prediction of biomass. First, biomasses of sample trees should be determined reliably to decrease the statistical errors caused by sub-sampling. In this study, methods to improve the accuracy of stem biomass estimates of the sample trees were developed. In addition, the reliability of the method applied to estimate sample-tree crown biomass was tested, and no systematic error was detected. Second, the whole information content of data should be utilized in order to achieve reliable parameter estimates and applicable and flexible model structure. In the modelling approach, the basic assumption was that the biomasses of

  17. Biomass for energy. Danish solutions

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-06-01

    Information is given on a number of typical and recently established plants of all types and sizes, for converting the main Danish biomass resources (manures, straw and wood derived from agricultural activities and forestry)into energy. Danish biomass resources and energy and environmental policies are described. In Denmark there is a very wide range of technologies for converting biomass into energy, and these are clarified. In addition, performance data from a number of plants fuelled with biomass fuels are presented. The course of further developments within this field is suggested. The text is illustrated with a considerable number of coloured photographs and also with graphs and diagrams. (ARW)

  18. Drinking water pollution with nickel from water boilers; Nickel-Eintrag aus Wasserkochern ins Trinkwasser

    Energy Technology Data Exchange (ETDEWEB)

    Helmers, E. [Amt fuer Umweltschutz, Stuttgart (Germany). Chemisches Inst.

    1998-07-01

    The EU is planning to drop the threshold value for nickel in drinking water down to 20 {mu}g/l (present German threshold value: 50 {mu}g/l). Since ICP-MS-screenings of spot checks of water cookers were striking with respect to nickel, emissions of electrical water cookers have been investigated systematically within this study. As a result, water cookers with open heating coils are emitting relevant amounts of nickel into the water while it is brought to the boil. Investigation of eight preused water cookers with open heating coils revealed that the boiled water contained more than 50 {mu}g Ni/l in one case, more than 20 {mu}g Ni/l in two cases and, between 10 and 20 {mu}g Ni/l in two more cases, respectively. Removing of the lime by the aid of citric acid is increasing the nickel concentrations by a factor of up to 50 (max. 640 {mu}g/l). A new device was checked in a long-term test. During standard use with tapwater, Ni concentrations fall below the detection limit of 5 {mu}g Ni/l (120 cooking events). However, after removing of the lime, 5 times of cooking were necessary in order to diminish the Ni concentrations below the limit of 20 {mu}g/l. In the case of dionized water Ni concentrations below the limit of 20 {mu}g/l. In the case of deionized water Ni concentrations remained between 94 und 190 {mu}g/l. Health risk assessment: The intake of nickel with beverages made from hot water out of these cookers is in the range of 26 {mu}g/day. Considering an alltogether dietary nickel intake of 130-170 (900) {mu}g/day, this is not beyond the scope. However, according to the fact that nickel allergies (dermatitis) are very frequent (up to 13% of the population), this source should be limited or closed. (orig.) [Deutsch] Aus Anlass der geplanten Absenkung des Trinkwassergrenzwertes fuer Nickel auf 20 {mu}g/l sowie aufgrund von Auffaelligkeiten bei Stichprobenuntersuchungen wurde das Nickel-Emissionsverhalten von elektrischen Wassererhitzern betrachtet. Hierbei erwies sich

  19. Suspension membrane reactor for biological elimination of non-degradable materials from mixed effluents. Final report; Suspensionsmembranreaktor zur biologischen Eliminierung schwer abbaubarer Stoffe aus Abwassergemischen. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Raebiger, N.; Schierenbeck, A.

    2002-07-01

    zurueckgefuehrt, um einen vollstaendigen Abbau durch die Einstellung einer substratspezifischen Verweilzeit zu gewaehrleisten. Durch eine zwischengeschaltete Mikrofiltration wird die Biomasse zurueckgehalten und somit das Aufwachsen eines Biofilms im Nanofiltrationsteil verhindert. Die Anwendung des bestehenden Suspensions-Membranreaktors und der neuen zweistufigen Anlagen erfolgt im zweiten Teil des Forschungsvorhabens anhand eines synthetischen Abwassers mit dem praxisrelevanten Modellschadstoff 4-Chlorphenol sowie anhand eines realen industriellen Prozessabwassers der Filzfrei-Behandlung aus der Bremer Wollkaemmerei mit einem erhoehten AOX-Gehalt. (orig.)

  20. Vegetal and animal biomass; Les biomasses vegetales et animales

    Energy Technology Data Exchange (ETDEWEB)

    Combarnous, M. [Bordeaux-1 Univ., Lab. Energetique et Phenomenes de Transfert, UMR CNRS ENSAM, 33 - Talence (France)

    2005-07-01

    This presentation concerns all types of biomass of the earth and the seas and the relative implicit consumptions. After an evaluation of the food needs of the human being, the author discusses the solar energy conversion, the energetic flux devoted to the agriculture production, the food chain and the biomass. (A.L.B.)

  1. ALTENER - Biomass event in Finland

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    The publication contains the lectures held in the Biomass event in Finland. The event was divided into two sessions: Fuel production and handling, and Co-combustion and gasification sessions. Both sessions consisted of lectures and the business forum during which the companies involved in the research presented themselves and their research and their equipment. The fuel production and handling session consisted of following lectures and business presentations: AFB-NETT - business opportunities for European biomass industry; Wood waste in Europe; Wood fuel production technologies in EU- countries; new drying method for wood waste; Pellet - the best package for biofuel - a view from the Swedish pelletmarket; First biomass plant in Portugal with forest residue fuel; and the business forum of presentations: Swedish experiences of willow growing; Biomass handling technology; Chipset 536 C Harvester; KIC International. The Co-combustion and gasification session consisted of following lectures and presentations: Gasification technology - overview; Overview of co-combustion technology in Europe; Modern biomass combustion technology; Wood waste, peat and sludge combustion in Enso Kemi mills and UPM-Kymmene Rauma paper mill; Enhanced CFB combustion of wood chips, wood waste and straw in Vaexjoe in Sweden and Grenaa CHP plant in Denmark; Co-combustion of wood waste; Biomass gasification projects in India and Finland; Biomass CFB gasifier connected to a 350 MW{sub t}h steam boiler fired with coal and natural gas - THERMIE demonstration project in Lahti (FI); Biomass gasification for energy production, Noord Holland plant in Netherlands and Arbre Energy (UK); Gasification of biomass in fixed bed gasifiers, Wet cleaning and condensing heat recovery of flue gases; Combustion of wet biomass by underfeed grate boiler; Research on biomass and waste for energy; Engineering and consulting on energy (saving) projects; and Research and development on combustion of solid fuels

  2. Schmidt. Sinfonie Nr. 1 E-Dur; Strauss. Vier sinfonische Zwischenspiele aus Intermezzo. Detroit Symphony Orchestra, Neeme Järvi / Helge Grünewald

    Index Scriptorium Estoniae

    Grünewald, Helge

    1996-01-01

    Uuest heliplaadist "Schmidt. Sinfonie Nr. 1 E-Dur; Strauss. Vier sinfonische Zwischenspiele aus Intermezzo. Detroit Symphony Orchestra, Neeme Järvi. Chandos/Koch CD 9357 (WD: 68'20") DDD (WD:114'36")

  3. ZPID-Monitor 2004 zur Internationalität der Psychologie aus dem deutschsprachigen Bereich: Der ausführliche Bericht

    OpenAIRE

    Krampen, Günter; Schui, Gabriel

    2006-01-01

    Präsentiert werden wichtige Befunde der jährlichen ZPID-Monitor Erhebungen zur Fortlaufenden Registrierung und Evaluation der Dissemination der Psychologie aus dem deutschsprachigen Bereich in der internationalen psychologischen Forschungsgemeinschaft.

  4. Studien zur Messung von Rekonstruktionseffizienz und Untergrund der $\\tau$-Lepton-Identifikation im Zerfall $Z\\to \\tau \\tau$ beim ATLAS-Experiment aus Daten

    CERN Document Server

    Johnert, Sebastian

    2008-01-01

    In dieser Diplomarbeit werden zwei Methoden vorgestellt, mit denen τ -Leptonen in den zuk ̈nf- u tigen Daten des ATLAS-Experiments untersucht werden sollen. Den ersten Teil bildet die Be- stimmung von Missidentifikationsraten von Jets aus QCD-2-Jet-Ereignissen als τ -Leptonen. Der zweite Teil ist die Entwicklung einer Methode zur Bestimmung der τ -Rekonstruktions- und -Identifikationseffizienz relativ zur μ-Effizienz. In diesem Zusammenhang werden invariante Massen aus Z → ll-Ereignissen bestimmt, die Massen aus Z → τ τ -Ereignissen mit denen aus Z → ee und Z → μμ verglichen, τ -Effizienzen gemittelt uber alle Bereiche und in verschiedenen ̈ o η-Bereichen berechnet sowie eine M ̈glichkeit zur Bestimmung von τ -Effizienzen in unterschied- lichen Transversalimpulsbereichen vorgestellt. Des Weiteren wird eine verbesserte Absch ̈tzung a des QCD-Untergrunds vorgenommen und das Verhalten der τ -Effizienz unter Ber ̈cksichtigung u des Triggers untersucht.

  5. Biomass plantations - energy farming

    Energy Technology Data Exchange (ETDEWEB)

    Paul, S.

    1981-02-01

    Mounting oil import bills in India are restricting her development programmes by forcing the cutting down of the import of other essential items. But the countries of the tropics have abundant sunlight and vast tracts of arable wastelands. Energy farming is proposed in the shape of energy plantations through forestry or energy cropping through agricultural media, to provide power fuels for transport and the industries and also to provide fuelwoods for the domestic sector. Short rotation cultivation is discussed and results are given of two main species that are being tried, ipil-ipil and Casuarina. Evaluations are made on the use of various crops such as sugar cane, cassava and kenaf as fuel crops together with hydrocarbon plants and aquatic biomass. (Refs. 20)

  6. Mobile Biomass Pelletizing System

    Energy Technology Data Exchange (ETDEWEB)

    Thomas Mason

    2009-04-16

    This grant project examines multiple aspects of the pelletizing process to determine the feasibility of pelletizing biomass using a mobile form factor system. These aspects are: the automatic adjustment of the die height in a rotary-style pellet mill, the construction of the die head to allow the use of ceramic materials for extreme wear, integrating a heat exchanger network into the entire process from drying to cooling, the use of superheated steam for adjusting the moisture content to optimum, the economics of using diesel power to operate the system; a break-even analysis of estimated fixed operating costs vs. tons per hour capacity. Initial development work has created a viable mechanical model. The overall analysis of this model suggests that pelletizing can be economically done using a mobile platform.

  7. Sprache als Spiegel : zu Grundlagen, Strukturen und Aussagen der Spiegelmetaphorik in Rudolf Steiners "Mysteriendramen" aus textsemantischer Sicht

    OpenAIRE

    Höhne, Alexander

    2005-01-01

    Diese Untersuchung zeigt die Ergebnisse textsemantischer Reflexionen auf der Grundlage hermeneutisch orientierter Forschungsprozesse und aus einer Haltung des Positivismus. Auf einem deduktiv angelegten Weg vom Begriff der Sprache über kontextuell und systemtheoretisch erfasste Bedingungen des verbalen Redens (als Sprechen und Schreiben), sowohl von Steiner als auch allgemeiner, bis hin zu den Grundbedingungen metaphorischer Rede, mündet die Untersuchung in der Betrachtung e...

  8. Szenarien zur zukünftigen Stromversorgung, kostenoptimierte Variationen zur Versorgung Europas und seiner Nachbarn mit Strom aus erneuerbaren Energien

    OpenAIRE

    Czisch, Gregor

    2005-01-01

    Sowohl die Ressourcenproblematik als auch die drohenden Ausmaße der Klimaänderung lassen einen Umstieg auf andere Energiequellen langfristig unausweichlich erscheinen und mittelfristig als dringend geboten. Unabhängig von der Frage, auf welchem Niveau sich der Energiebedarf stabilisieren lässt, bleibt dabei zu klären, welche Möglichkeiten sich aus technischer und wirtschaftlicher Sicht in Zukunft zur Deckung unseres Energiebedarfs anbieten. Eine aussichtsreiche Option besteht in der Nutzung r...

  9. Psychische Gesundheit und Rückkehrvorstellungen am Beispiel von Flüchtlingen aus dem ehemaligen Jugoslawien

    OpenAIRE

    Lersner, Ulrike von; Rieder, Heide; Elbert, Thomas

    2008-01-01

    Theoretischer Hintergrund: Viele Flüchtlinge aus dem ehemaligen Jugoslawien leben seit ca. 11 Jahren in Deutschland. Es fehlt bislang an Daten zu den Langzeitfolgen der traumatischen Kriegsereignisse und der Einflüsse von Exilfaktoren auf die psychische Gesundheit in dieser Population. Auch sind Zusammenhänge zwischen diesen Faktoren sowie die Einstellung zur Rückkehr nicht ausreichend untersucht.Fragestellung: Wie ist die psychische Gesundheit dieser Flüchtlinge nach durchschnittlich 11 Jahr...

  10. Internationalität und Internationalisierung der deutschsprachigen Psychologie aus bibliometrischer Perspektive - Methoden und Befunde zu Geschichte und aktueller Entwicklung

    OpenAIRE

    Schui, Gabriel

    2004-01-01

    Die vorliegende Arbeit befasst sich mit der Anwendung bibliometrischer Verfahren auf die psycho-logiehistorische Fragestellung nach Veränderungen der internationalen Visibilität und Dissemination der psychologischen Forschung aus den deutschsprachigen Ländern im Verlauf des 20. Jahrhunderts. Zunächst erfolgt eine kurze Einführung in die Inhalte und Methoden der Wissenschaftsforschung. Dabei liegen die Schwerpunkte auf der Anwendung in der Psychologie und auf der Darstellung der relativ jun...

  11. Leitfähige Beschichtungen aus Indium-Zinn-Oxid Nanopartikeln für flexible transparente Elektroden

    OpenAIRE

    Königer, Tobias

    2009-01-01

    Ziel dieser Arbeit war die Entwicklung von flexiblen transparenten Elektroden aus ITO-Nanopartikeln für optoelektronische Anwendungen. Die ITO-Nanopartikel Beschichtungen sollten für die Anwendung als flexible transparente Elektrode laut anwendungstechnischen Vorgaben folgende Anforderungen erfüllen: •Flächenwiderstand von unter 1000 Ohmsq •Transmission im sichtbaren Bereich von über 80% •Erhalt der elektrischen Leitfähigkeit unter oszillatorischer Biegebelastung Die Untersuchungsschwerpunkte...

  12. Heterologe Expression von Proteinen aus Ananas comosus zur Aufklärung der pharmakologischen Wirkmechanismen von Bromelain

    OpenAIRE

    Luniak, Nora

    2007-01-01

    Ziel der Arbeit war die Herstellung der pharmakologisch aktiven Komponenten von Bromelain in Form von rekombinanten Proteinen. Mit den bisher angewendeten Trennmethoden ist es jedoch nicht möglich, einzelne Proteine aus dem Gemisch zu isolierten und daher die pharmakologische Wirkung einer Fraktion auf ein Protein zurückzuführen. Die Arbeit beschäftigte sich daher mit der rekombinanten Herstellung von Cysteinproteasen, die die Hauptbestandteile biochemisch und pharmakologisch charakterisierte...

  13. Update der AG Reproduktionsgenetik der DGRM: Nicht-invasive Pränataltests aus mütterlichem Blut

    Directory of Open Access Journals (Sweden)

    Stumm M

    2014-01-01

    Full Text Available Die Entwicklung von nicht-invasiven pränatalen Analyseverfahren an zellfreier fetaler DNA aus maternalem Blut haben die Pränataldiagnostik in den vergangenen beiden Jahren stark verändert. In unserem kurzen Update wollen wir Sie über die aktuellen Entwicklungen informieren und Ihnen einige praktische Tipps für den klinischen Alltag mit auf den Weg geben.

  14. Flexibilisierung von Entgeltsystemen: Voraussetzung für ein systematisches Beschäftigungsmanagement ; Ergebnisse aus qualitativen Fallstudien

    OpenAIRE

    Walter A. Oechsler; Wiskemann, Gabriel

    1999-01-01

    Im Rahmen eines interdisziplinären Projektverbunds des Zentrums für Europäische Wirtschaftsforschung in Mannheim und der Universität Mannheim wurden im Zeitraum von Mitte April bis Mitte Mai 1998 in Form von Fallstudien die Entgeltsysteme von drei Großunternehmen aus dem Rhein-Neckar-Raum untersucht. Ziel war es zum einen, die Flexibilisierungsnotwendigkeiten sowie die den einzelnen Unternehmen zur Verfugung stehenden Flexibilisierungsspielräume bei der Gestaltung ihrer Entgeltsysteme zu anal...

  15. Sprache und Geschlecht : wie quantitative Methoden aus der Experimental- und Neuropsychologie einen Beitrag zur Geschlechterforschung leisten können

    OpenAIRE

    Ferstl, Evelyn C.; Kaiser, Anelis

    2013-01-01

    "Wer die auf Geistes- und Sozialwissenschaften basierende Literatur aus dem Kanon der Geschlechtertheorie betrachtet, erhält den Eindruck, dass die Psychologie innerhalb dieses Forschungsbereichs keine tragende Rolle spielt. Ein möglicher Grund für die fehlende Integration psychologischer Forschung scheint ihr Zugriff auf quantitative empirische Methoden zu sein, ein Ansatz, der für die naturwissenschaftlich orientierte psychologische Forschung zentral ist. In diesem Artikel wollen die Autori...

  16. Der Einfluss von Polysacchariden aus Malz, Hefe und Bakterien auf die Filtrierbarkeit von Würze und Bier

    OpenAIRE

    Kreisz, Stefan

    2005-01-01

    Polysaccharide aus Malz, Hefe und Bakterien beeinflussen die Viskosität und die Filtrierbarkeit von Würze und Bier entscheidend, wobei der Einfluss von einzelnen Polysacchariden über den gesamten Produktionsprozess zunehmen kann. Durch Viskositätsmessungen, Filtertests und Trübungsmessungen konnte der individuelle Einfluss der einzelnen Polysaccharide gemessen werden. Um die Veränderung des Einflusses verschiedener Polysaccharide über den gesamten Brauprozess verfolgen zu können wurde eine St...

  17. Sozial-emotionale und kognitive Merkmale von Scheidungskindern und Kindern aus Zwei-Eltern- Familien - ein querschnittlicher Vergleich

    OpenAIRE

    Kardas, Jeanette; Langenmayr, Arnold

    1999-01-01

    In Zusammenhang mit der Erforschung von Trennungs- und Scheidungseffekten bei Kindern mangelt es an deutschsprachigen empirischen Untersuchungen. Mit einer im Querschnitt angelegten Feldstudie wurden 48 Scheidungskinder und 32 Kinder aus Zwei-Eltern-Familien hinsichtlich spezieller sozial-emotionaler und einiger kognitiver Merkmale direkt untersucht. Bevorzugt wurden dabei projektive und semi-projektive Testverfahren verwandt. Eine der Hauptfragestellungen bezog sich auf das Frustrationsbewäl...

  18. Der Effekt von Wachstumsfaktoren auf die Proliferation von humanen Fibrochondrozyten aus unterschiedlichen avaskulären Regionen des Meniskus

    OpenAIRE

    Martinek, Stefanie

    2005-01-01

    In der vorliegenden experimentellen Arbeit wurde der Effekt von drei verschiedenen Wachstumsfaktoren, Transforming growth factor a (TGFa), Vascular endothelial growth factor (VEGF) und Insulin-like growth factor 1 (IGF-1), auf die Proliferation zweier verschiedener Populationen menschlicher Meniskuszellen gemessen. Unter Verwendung von 16 Menisci aus 4 weißen Neuseeland Kaninchen wurde zunächst das Verhalten von Menisci in einer Gewebekultur untersucht. Die steril entnommenen Kaninchen-Menisc...

  19. Spurenbestimmung von Insektiziden in Sedimenten und Böden aus dem Einzugsgebiet des Lake Abaya / Äthiopien

    OpenAIRE

    Schmeck, Thorsten

    2006-01-01

    Zur Spurenanalyse von fünfzehn Insektiziden, im wesentlichen Organochlorpestizide, im µg kg-1-Bereich in Sedimentenbohrkernen und Böden aus dem Einzugsgebiet des Lake Abaya, einem der großen Binnenseen Äthiopiens, wurden Messmethoden, von der Probenvorbereitung bis zur Bestimmung mittels GC-MS, untersucht. Die Messmethoden wurden mit Hilfe ausführlicher Experimente zu den Wiederfindungen der Analyten validiert. Zur Extraktion wurden Ultraschallextraktion (USE), Soxhletextraktion und...

  20. Kombination aus Biowäscher- und Biomembranverfahren zur Reinigung von Abluft und hydrophilen und hydrophoben Inhaltsstoffen

    OpenAIRE

    Reiser, Martin; Fischer, Klaus; Engesser, Karl-Heinrich

    1994-01-01

    Abluft, die eine Mischung aus wasserlöslichen uod wasserunlöslichen organischen Lösungsmitteln enthält, stellt für ein biologisches Reinigungsverfahren eine große Herausforderung dar. Durch Kombination eines Biomembranreaktors mit Silikonkautschukmembranen und einem Biowäscher konnten für ein Gemisch von Methanol, n-Hexan und Toluol in der Abluft gute Reinigungsleistungen erzielt werden.

  1. Bestimmung der Größenverteilung von sekundären organischen Aerosolen aus der Photooxidation biogener Terpene

    OpenAIRE

    Bonn, Boris

    2002-01-01

    Diese Arbeit untersucht die Bildung vonsekundärem organischem Aerosol aus der Gasphasenoxidation vonbiogenen Terpenen. Dazu wurde die Größenverteilung desentstandenen Aerosols kontinuierlich über die Bestimmung derelektrischen Beweglichkeit der einzelnen Teilchen gemessen (SMPS,TSI 3936). In diesem Zusammenhang wurde im ersten Teil dasNukleationspotential der unterschiedlichen Oxidationstypen vona-Pinen und b-Pinen durch O_3, OH und NO_3 über die Messung dergebildeten Partikelanzahl- und Volu...

  2. Systematische Untersuchung der kontrollierten Partikelabscheidung aus überkritischem Kohlendioxid und Entwicklung geeigneter Trägersysteme

    OpenAIRE

    Metzger, Philipp

    2011-01-01

    Die Verkleinerung von Arzneistoffpartikeln stellt ein gängiges Verfahren zur Verbesserung ihrer Lösungseigenschaften dar. Eine solche Zerkleinerung kann durch die kontrollierte Paritkelabscheidung (controlled particle deposition – CPD) aus überkritischem Kohlendioxid in poröse Träger hinein erreicht werden. Dabei entsteht unmittelbar die fertige Arzneiform. Die Arbeit beinhaltet zum einen die Entwicklung poröser Träger für die kontrollierte Partikelabscheidung, basierend auf Ammoniumcarbo...

  3. Abbau von epsilon-Caprolactam aus Abluftwäscherlaugen mittels Licht verstärkter Fenton-Reaktion

    OpenAIRE

    Heck, Edmund; Jung, Christian; de Oliveira, Lamark; Olwig, Ralf; Säck, Jan-Peter; Sattler, Christian; Schäfer, Thomas; Senholdt, Marion; Weskott, Klaus; Zinner, Dania

    2009-01-01

    Caprolactam-haltige Wässer aus Abluftwäschern der Veredlung von Nylongewebe können mittels der Licht verstärkten Fenton-Reaktion gereinigt und für die Kreislaufführung aufbereitet werden. Der Abbauweg des Caprolactams wurde untersucht, um die rasche Eliminierung zu erklären und um die Zwischenprodukte bis zur Mineralisierung zu identifizieren.

  4. Die Vorratsdatenspeicherung in Europa, Deutschland und Bayern - eine vergleichende Betrachtung und Bewertung aus Sicht der IT-Sicherheit

    OpenAIRE

    Biendl, Michael

    2011-01-01

    Die vorliegende Magisterarbeit analysiert, vergleicht und bewertet die rechtliche und praktische Ausgestaltung der Vorratsdatenspeicherung in Europa aus Sicht der IT-Sicherheit. Aufbauend auf grundlegenden Überlegungen zum erforderlichen sicherheitstechnischen Schutzniveau erfolgt eine Analyse der europarechtlichen Vorgaben zur technischen Absicherung der Datenbestände. Ausgehend von den europäischen Vorgaben wird anschließend untersucht, inwieweit diese in den einzelnen Mitgliedstaaten der E...

  5. Chancen und Herausforderungen der religiösen Bildung im Lebensraum Schule aus muslimischer Perspektive

    Directory of Open Access Journals (Sweden)

    Sule Dursun

    2016-06-01

    Full Text Available Dieser Beitrag basiert – mit dem Hinweis auf die zunehmende Präsenz der herkunftsorientierten religiösen Einrichtungen in Europa – auf dem Argument, dass die islamisch-religiöse Bildung in den Schulen Europas überdacht werden muss und ihr eine entscheidende Rolle zukommt. Neben den herkunftsorientierten religiösen Einrichtungen in Europa wird in diesem Beitrag die Bedeutung des islamischen Religionsunterrichts aus dem Blickwinkel des kontextualisierten Islams beleuchtet. Mittels Fallbeispielen zur religiösen Bildung am religiösen Markt (= religiöse Institutionen außerhalb des Schulraums wird in diesem Beitrag aufgezeigt, dass der islamische Religionsunterricht im Gegensatz zu den religiösen Institutionen keine Monopolkirche sein darf, in der vorwiegend eine Art Volksfrömmigkeit vermittelt wird. Opportunities and Challenges of Religious Education in Schools – A Muslim Perspective This contribution is based on the argument that the role of Islamic religious education at schools should be reconceived in relation to the growing presence of origin-oriented religious institutions in Europe. In addition to the origin-oriented religious institutions in Europe, this paper aims to present the importance of Islamic religious education from the perspective of contextualized Islam. Based on case studies for religious education in the religious market (outside the education area this paper shows that the Islamic religious education cannot offer Church`s monopoly and act like origin-oriented religious institutions to mediate popular piety.

  6. Demographische Diskurse und Politiken aus Geschlechterperspektive Demographic Discourse and Politics from the Perspective of Gender

    Directory of Open Access Journals (Sweden)

    Diana Auth

    2007-07-01

    Full Text Available Der von Peter A. Berger und Heike Kahlert herausgegebene Sammelband umfasst Analysen, die sich aus Geschlechterperspektive mit dem demographischen Wandel im nationalen und internationalen Kontext beschäftigen. Durch seine ideologie- und herrschaftskritischen sowie empirisch fundierten Beiträge zum demographischen Wandel trägt das Buch zur Versachlichung der medial wie wissenschaftlich aufgeheizten Debatte bei. Die Autor/-innen widersprechen allesamt der Tendenz, soziale Probleme zu demographisieren, und fordern stattdessen eine stärkere Historisierung, Kontextualisierung und eine geschlechtssensible Analyse und Interpretation demographischer Entwicklungen.The collected volume, edited by Peter A. Berger and Heike Kahlert, contains analyses that concern themselves with demographic change in the national and international context. The book contains empirically based articles on demographic change that are critical of ideology and dominance, thus contributing to the objectification of the heated debate in the media and science. The authors all contradict the tendency to demographically position social problems and demand instead a stronger focus on history, contextualization, and a gender-sensitive analysis and interpretation of demographic developments.

  7. Biomass, energy for the future?

    International Nuclear Information System (INIS)

    This document contains a brief presentation of a book in which the authors examine whether biomass will be able to participate to energy transition and respond to the increasing energy needs. They define the biomass, describe its use, recall its history, and discuss its role in energy transition. They question the use of biomass and wander whether it's a good idea to burn wood, if biofuels will be able to replace oil, whether biofuels are good for the environment, if biomass will be able to respond to the needs of building and chemical industries, whether it is worth to produce electricity from biomass, and whether methane has a future as energy vector. They examine the role of forest as a source of biomass-energy (how France could get the best out of its forests, whether it is better to plant trees or to exploit the forests). They discuss the role of agriculture, the role of wastes as a source of biomass-energy (whether it is better to burn or methanize wastes, what to choose between manure and corn for local energies). They examine the perspectives for biomass-energy, and notably whether there is enough land to feed humans and produce energy, how to decide between food, energy, materials and chemistry

  8. Liquid biofuels from blue biomass

    DEFF Research Database (Denmark)

    Kádár, Zsófia; Jensen, Annette Eva; Bangsø Nielsen, Henrik;

    2011-01-01

    Marine (blue) biomasses, such as macroalgaes, represent a huge unexploited amount of biomass. With their various chemical compositions, macroalgaes can be a potential substrate for food, feed, biomaterials, pharmaceuticals, health care products and also for bioenergy. Algae use seawater as a growth...

  9. Catalytic Gasification of Lignocellulosic Biomass

    NARCIS (Netherlands)

    Chodimella, V.P.; Seshan, K.; Schlaf, Marcel; Zhang, Z. Conrad

    2015-01-01

    Gasification of lignocellulosic biomass has attracted substantial current research interest. Various possible routes to convert biomass to fuels have been explored. In the present chapter, an overview of the gasification processes and their possible products are discussed. Gasification of solid biom

  10. Biomass resource assessment for China

    Energy Technology Data Exchange (ETDEWEB)

    Li Jingjing; Zhou Aiming [Energy Research Institute of State Planning and Development Commission (China)

    1999-07-01

    This paper calculated and assessed the biomass resource availability in China, especially straw and stalk, domestic animal excreta and municipal solid waste. The assessment showed that biomass energy will be a rich and sustainable resource in China, important for developing the social economy and improving the environment in the future. (author)

  11. Using NOAA/AVHRR based remote sensing data and PCR method for estimation of Aus rice yield in Bangladesh

    Science.gov (United States)

    Nizamuddin, Mohammad; Akhand, Kawsar; Roytman, Leonid; Kogan, Felix; Goldberg, Mitch

    2015-06-01

    Rice is a dominant food crop of Bangladesh accounting about 75 percent of agricultural land use for rice cultivation and currently Bangladesh is the world's fourth largest rice producing country. Rice provides about two-third of total calorie supply and about one-half of the agricultural GDP and one-sixth of the national income in Bangladesh. Aus is one of the main rice varieties in Bangladesh. Crop production, especially rice, the main food staple, is the most susceptible to climate change and variability. Any change in climate will, thus, increase uncertainty regarding rice production as climate is major cause year-to-year variability in rice productivity. This paper shows the application of remote sensing data for estimating Aus rice yield in Bangladesh using official statistics of rice yield with real time acquired satellite data from Advanced Very High Resolution Radiometer (AVHRR) sensor and Principal Component Regression (PCR) method was used to construct a model. The simulated result was compared with official agricultural statistics showing that the error of estimation of Aus rice yield was less than 10%. Remote sensing, therefore, is a valuable tool for estimating crop yields well in advance of harvest, and at a low cost.

  12. Anwendung der Thermomechanischen Behandlung mit Wärmebehandlung aus der Walzhitze für die Herstellung der Stabstahlsorte 15MnCrMoV4-8

    OpenAIRE

    Voloskov, Sergey

    2014-01-01

    Zur Herstellung von Stabstahl der Sorte 15MnCrMoV4-8 ist die thermomechanische Behandlung erprobt worden. Diese erfolgte in Kombination mit der kosten- und energiesparenden Wärmebehandlung aus der Walzhitze. Dabei wurde besondere Aufmerksamkeit der chemischen Zusammensetzung gewidmet. Sie wird aus der Sicht kostenintensiver Legierungselemente, wie sie in Kombination mit Umformung und Abkühlung zum Erreichen eines mechanischen Eigenschaftsprofils führen, betrachtet. Das erforderliche Niveau de...

  13. Conditioning biomass for microbial growth

    Energy Technology Data Exchange (ETDEWEB)

    Bodie, Elizabeth A; England, George

    2015-03-31

    The present invention relates to methods for improving the yield of microbial processes that use lignocellulose biomass as a nutrient source. The methods comprise conditioning a composition comprising lignocellulose biomass with an enzyme composition that comprises a phenol oxidizing enzyme. The conditioned composition can support a higher rate of growth of microorganisms in a process. In one embodiment, a laccase composition is used to condition lignocellulose biomass derived from non-woody plants, such as corn and sugar cane. The invention also encompasses methods for culturing microorganisms that are sensitive to inhibitory compounds in lignocellulose biomass. The invention further provides methods of making a product by culturing the production microorganisms in conditioned lignocellulose biomass.

  14. Fusion characterization of biomass ash

    DEFF Research Database (Denmark)

    Ma, Teng; Fan, Chuigang; Hao, Lifang;

    2016-01-01

    The ash fusion characteristics are important parameters for thermochemical utilization of biomass. In this research, a method for measuring the fusion characteristics of biomass ash by Thermo-mechanical Analyzer, TMA, is described. The typical TMA shrinking ratio curve can be divided into two...... stages, which are closely related to ash melting behaviors. Several characteristics temperatures based on the TMA curves are used to assess the ash fusion characteristics. A new characteristics temperature, Tm, is proposed to represent the severe melting temperature of biomass ash. The fusion...... characteristics of six types of biomass ash have been measured by TMA. Compared with standard ash fusibility temperatures (AFT) test, TMA is more suitable for measuring the fusion characteristics of biomass ash. The glassy molten areas of the ash samples are sticky and mainly consist of K-Ca-silicates....

  15. Treatment of biomass to obtain fermentable sugars

    Science.gov (United States)

    Dunson, Jr., James B.; Tucker, Melvin; Elander, Richard; Hennessey, Susan M.

    2011-04-26

    Biomass is pretreated using a low concentration of aqueous ammonia at high biomass concentration. Pretreated biomass is further hydrolyzed with a saccharification enzyme consortium. Fermentable sugars released by saccharification may be utilized for the production of target chemicals by fermentation.

  16. EnerGEO biomass pilot

    Energy Technology Data Exchange (ETDEWEB)

    Tum, M.; Guenther, K.P. [German Aerospace Center (DLR), Wessling (Germany). German Remote Sensing Data Center (DFD); McCallum, I.; Balkovic, J.; Khabarov, N.; Kindermann, G.; Leduc, S. [International Institute for Applied Systems Analysis (IIASA), Laxenburg (Austria); Biberacher, M. [Research Studios Austria AG (RSA), Salzburg (Austria)

    2013-07-01

    In the framework of the EU FP7 project EnerGEO (Earth Observations for Monitoring and Assessment of the Environmental Impact of Energy Use) sustainable energy potentials for forest and agricultural areas were estimated by applying three different model approaches. Firstly, the Biosphere Energy Transfer Hydrology (BETHY/DLR) model was applied to assess agricultural and forest biomass increases on a regional scale with the extension to grassland. Secondly, the EPIC (Environmental Policy Integrated Climate) - a cropping systems simulation model - was used to estimate grain yields on a global scale and thirdly the Global Forest Model (G4M) was used to estimate global woody biomass harvests and stock. The general objective of the biomass pilot is to implement the observational capacity for using biomass as an important current and future energy resource. The scope of this work was to generate biomass energy potentials for locations on the globe and to validate these data. Therefore, the biomass pilot was focused to use historical and actual remote sensing data as input data for the models. For validation purposes, forest biomass maps for 1987 and 2002 for Germany (Bundeswaldinventur (BWI-2)) and 2001 and 2008 for Austria (Austrian Forest Inventory (AFI)) were prepared as reference. (orig.)

  17. Plasma Treatments and Biomass Gasification

    International Nuclear Information System (INIS)

    Exploitation of forest resources for energy production includes various methods of biomass processing. Gasification is one of the ways to recover energy from biomass. Syngas produced from biomass can be used to power internal combustion engines or, after purification, to supply fuel cells. Recent studies have shown the potential to improve conventional biomass processing by coupling a plasma reactor to a pyrolysis cyclone reactor. The role of the plasma is twofold: it acts as a purification stage by reducing production of tars and aerosols, and simultaneously produces a rich hydrogen syngas. In a first part of the paper we present results obtained from plasma treatment of pyrolysis oils. The outlet gas composition is given for various types of oils obtained at different experimental conditions with a pyrolysis reactor. Given the complexity of the mixtures from processing of biomass, we present a study with methanol considered as a model molecule. This experimental method allows a first modeling approach based on a combustion kinetic model suitable to validate the coupling of plasma with conventional biomass process. The second part of the paper is summarizing results obtained through a plasma-pyrolysis reactor arrangement. The goal is to show the feasibility of this plasma-pyrolysis coupling and emphasize more fundamental studies to understand the role of the plasma in the biomass treatment processes.

  18. Thermochemical behavior of pretreated biomass

    Energy Technology Data Exchange (ETDEWEB)

    Biswas, Amit Kumar

    2011-07-01

    Mankind has to provide a sustainable alternative to its energy related problems. Bioenergy is considered as one of the potential renewable energy resources and as a result bioenergy market is also expected to grow dramatically in future. However, logistic issues are of serious concern while considering biomass as an alternative to fossil fuel. It can be improved by introducing pretreated wood pellet. The main objective of this thesis is to address thermochemical behaviour of steam exploded pretreated biomass. Additionally, process aspects of torrefaction were also considered in this thesis. Steam explosion (SE) was performed in a laboratory scale reactor using Salix wood chips. Afterwards, fuel and thermochemical aspects of SE residue were investigated. It was found that Steam explosion pretreatment improved both fuel and pellet quality. Pyrolysis of SE residue reveals that alerted biomass composition significantly affects its pyrolysis behaviour. Contribution from depolymerized components (hemicellulose, cellulose and lignin) of biomass was observed explicitly during pyrolysis. When devolatilization experiment was performed on pellet produced from SE residue, effect of those altered components was observed. In summary, pretreated biomass fuel characteristics is significantly different in comparison with untreated biomass. On the other hand, Process efficiency of torrefaction was found to be governed by the choice of appropriate operating conditions and the type of biomass.

  19. Enzyme-containing faeces of herbivores increases biogas yield of energy crops; Enzymhaltiger Kot von Pflanzenfressern erhoeht Biogasausbeute aus pflanzlicher Biomasse

    Energy Technology Data Exchange (ETDEWEB)

    Sensel-Gunke, Karen; Schimpf, Ulrike [Humboldt Univ., Berlin (Germany). Abt. ' ' Biogene Rohstoffe' ' ; Getz, Josephine; Krocker, Manfred [Humboldt Univ., Berlin (Germany). Fachgebiet Tierhaltungssysteme und Verfahrenstechnik

    2013-06-01

    In order to increase the biogas yield of energy crops the degradation of fibrous constituents needs to be improved. In addition to mechanical and chemical procedures of treatment, more attention is given to research regarding enzymatic treatment. Therefore, efforts are concentrating on finding inexpensive sources for enzyme production. One source could be the digestive tract of herbivores which contains microorganisms and enzymes highly specialized in fibre degradation. The influence of such microorganisms and their enzymes on the degradation of maize silage has been demonstrated in anaerobic batch digestion tests using the example of rabbit faeces. (orig.)

  20. Catalytic gasification of biomass

    Science.gov (United States)

    Robertus, R. J.; Mudge, L. K.; Sealock, L. J., Jr.; Mitchell, D. H.; Weber, S. L.

    1981-12-01

    Methane and methanol synthesis gas can be produced by steam gasification of biomass in the presence of appropriate catalysts. This concept is to use catalysts in a fluidized bed reactor which is heated indirectly. The objective is to determine the technical and economic feasibility of the concept. Technically the concept has been demonstrated on a 50 lb per hr scale. Potential advantages over conventional processes include: no oxygen plant is needed, little tar is produced so gas and water treatment are simplified, and yields and efficiencies are greater than obtained by conventional gasification. Economic studies for a plant processing 2000 T/per day dry wood show that the cost of methanol from wood by catalytic gasification is competitive with the current price of methanol. Similar studies show the cost of methane from wood is competitive with projected future costs of synthetic natural gas. When the plant capacity is decreased to 200 T per day dry wood, neither product is very attractive in today's market.

  1. Biomass combustion gas turbine CHP

    Energy Technology Data Exchange (ETDEWEB)

    Pritchard, D.

    2002-07-01

    This report summarises the results of a project to develop a small scale biomass combustor generating system using a biomass combustor and a micro-gas turbine indirectly fired via a high temperature heat exchanger. Details are given of the specification of commercially available micro-turbines, the manufacture of a biomass converter, the development of a mathematical model to predict the compatibility of the combustor and the heat exchanger with various compressors and turbines, and the utilisation of waste heat for the turbine exhaust.

  2. IV. International Slovak Biomass Forum

    International Nuclear Information System (INIS)

    The publication has been set up as proceedings of the conference dealing with use of biomass for energy production. The main conference topics are focused on the following scopes: Session 1: Strategies, politics, legislation tools, implementation issues; Session 2: Bioenergy market and business; Session 3: Biomass resources and fuel production; Session 4: Combustion and boiler system, technology; Session 5: Utilisation of biomass, practical examples (CHP, WWTP, DH, Central heating, Stakeholders); Session 6: Application of R + D in praxis in the short term horizont. In these proceedings 44 contributions are included

  3. Biomass processing over gold catalysts

    CERN Document Server

    Simakova, Olga A; Murzin, Dmitry Yu

    2013-01-01

    The book describes the valorization of biomass-derived compounds over gold catalysts. Since biomass is a rich renewable feedstock for diverse platform molecules, including those currently derived from petroleum, the interest in various transformation routes has become intense. Catalytic conversion of biomass is one of the main approaches to improving the economic viability of biorefineries.  In addition, Gold catalysts were found to have outstanding activity and selectivity in many key reactions. This book collects information about transformations of the most promising and important compounds

  4. Bearings for the biomass boom

    Energy Technology Data Exchange (ETDEWEB)

    MacQueen, Duncan

    2011-03-15

    Biomass energy is booming –– more than two billion people depend on biomass for their energy and the International Energy Agency predicts that biomass' share of the global energy supply will treble by 2050. But in many developing countries it is still regarded as a traditional and dirty solution that is often criminalised, unsustainable and poorly paid. A more sophisticated approach that legalises and secures sustainable production by and for local people could help improve energy security, cut carbon emissions, protect forests and reduce poverty.

  5. Biomass catalysis and solvents; Biomasse catalyse et solvants

    Energy Technology Data Exchange (ETDEWEB)

    Pioch, D. [CIRAD-AMIS, programme Agro-Alimentaire, 34 - Montpellier (France); Pouilloux, Y.; Barrault, J. [Centre National de la Recherche Scientifique (CNRS UMR 6503), ESIP, Lab. de Catalyse en Chimie Organique, 86 - Poitiers (France)] [and others

    2000-07-01

    How to develop new technics and products and at the same time to respect the environment? The biomass seems to be an interesting domain in this framework and this document allows the selection of performing products obtain by biomass. Among these products the solvents economic and environmental advantages or consequences are discussed. A great part is also devoted to the voc emissions, bound to the solvents.

  6. Density Functional Study on Adsorption of NO on AuSe (010) Surface

    Institute of Scientific and Technical Information of China (English)

    XU,Xiang-Lan; CHEN,Wen-Kai; WANG,Xia; SUN,Bao-Zhen; LI,Yi; LU,Chun-Hai

    2008-01-01

    NO molecule adsorption on (010) surface of gold selenide (AuSe) has been studied with a periodic slab model by means of the GGA-PW91 exchange-correlation functional within the framework of density functional theory (DFT). Four different on-top adsorption sites Au(1), Au(2), Se(1) and Se(2) were considered for α-AuSe and three on-top adsorption sites Au(1), Au(2) and Se(1) for β-AuSe. N-end and O-end adsorptions of NO were investigated for the above sites. The results show that N-end adsorptions are preferred for α- and β-AuSe and O-end adsorptions are not feasible and thought as physisorption with the weak adsorption energies from 6.0 to 10.8 kJ/mol. For the N-end adsorptions on α-and β-AuSe (010) surfaces, Au(2) sites are most favorable with the adsorption energies 89.0 and 78.0 kJ/mol for α-and β-AuSe, respectively. However, the adsorptions at Au1 sites are very weak with the adsorption energies of 27.8 and 7.5 kJ/mol, respectively. In case of the adsorption of N-down orientations of NO at Se sites for α-and β-AuSe (010) surfaces, the adsorption activities of Se(1) and Se(2) sites on the α-AuSe (010) surface and Se(1) site on the β-AuSe (010) surface are almost the same with the adsorption energies 51.2, 52.7 and 49.2 kJ/mol. The geometric optimizations for adsorption configurations were calculated along with accounting for stretching frequency and density of states in our work.

  7. Continuing educattion by means of the internet; Aus- und Weiterbildung mit dem Internet

    Energy Technology Data Exchange (ETDEWEB)

    Jurasszovich, H.; Lischka, M. [Wien Univ. (Austria). Inst. fuer Medizinische Aus- und Weiterbildung

    2000-04-01

    A world wide homogenous level of knowledge for all members of an expert community is the proposed aim of academic education. The potential of the World Wide Web (WWW) with respect to under- and postgraduate education maybe accomplished if its use will become a definite part of cultural skills. Additionally, the process of simple collection of information should be added by the process of gaining knowledge and experience. Adaptation to the target group and a high degree of interactivity are the two main characteristics of high-quality technology-based learning materials. Considering both most of the web-ressources show deficits. Instructional design as well as information technology have means to overcome these deficits. With respect to the didactic principles of materials for beginners and advanced students, the architecture of computerised learning programs plays a significant role. However, costs to develop high-level learning materials is extremely high. Therefore it is necessary, to use synergetic effects with other digitized clinical and scientific materials. (orig.) [German] Ein weltweit homogener Wissensstand fuer alle Mitglieder einer Expertengemeinschaft ist das anzustrebende Ziel der akademischen Aus- und Weiterbildung. Das Potential des Internets im Bildungsbereich kann dann einer Nutzung zugefuehrt werden, wenn seine Anwendung in das Spektrum der Kulturfertigkeiten aufgenommen wird und, zweitens, ueber das Sammeln von Informationen hinaus auch Wissen und Erfahrung erworben werden koennen. Zielgruppenorientierung und hohe Interaktivitaet sind die beiden zentralen Qualitaetsmerkmale technologiebasierter Materialien fuer den Wissenserwerb. Webbasierte Ressourcen erweisen sich jedoch gerade in dieser Hinsicht meist als defizitaer. Mit Mitteln des Instruktionsdesign und der Informationstechnologie koennen diese Defizite ueberwunden werden. Im Hinglick auf die Lernbeduerfnisse von Anfaengern und Fortgeschrittenen kommt der Architektur von Lernanwendungen hohe

  8. Large-volume heat storage tank made of GFK; Grosswaermespeichertank aus GFK

    Energy Technology Data Exchange (ETDEWEB)

    Buehl, J.; Schultheis, P. [Technische Univ. Ilmenau (Germany). Fachgebiet Technische Thermodynamik

    1998-12-31

    The Technical University of Ilmenau, the company Verbundwerkstoff- und Kunststoffanwendungstechnik Schoenbrunn, the Institute for Aerospace and Light-weight construction of Dresden University with its approved testing facilities for plastics and the Institute for Construction Engineering in Berlin and several other institutions co-operated since 1996 in developing a concept for a series of long-term heat storage tanks up to 6,000 cubic metres storage volume made of plastic (GFK components) with a combined thermal insulation. A model tank (sandwich body with proportional thermal insulation layer and selected mixed laminates) with a volume of 1.5 cubic metres was built and installed in November 1996. The tank has been continuously operated at various test levels. The experiment proves the longevity of the materials used. (orig.) [Deutsch] In Zusammenarbeit der TU Ilmenau mit der Fa. Verbundwerkstoff - und Kunststoffanwendungstechnik Schoenbrunn und dem Institut fuer Luftfahrttechnik und Leichtbau Dresden, seiner akkredierten Pruefstelle fuer Kunststoffe, in Abstimmung mit dem Institut fuer Bautechnik Berlin und weiteren Einrichtungen und Partnern wird seit 1996 an einem Konzept fuer eine Typenreihe Langzeitwaermespeicher bis vorerst 6.000 m{sup 3} Speichervolumen aus Kunststoff (GFK-Komponenten) und kombinierter integrierter thermischer Isolation gearbeitet. Im Vorfeld dieser Entwicklung wurde auf der Basis vorausgewaehlter Materialien und Kompositionen ein Musterspeicher (ein Sandwich - Modellkoerper mit proportionaler Waermedaemmschicht sowie ausgewaehlten Mischlaminaten) mit einem Speichervolumen von 1,5 m{sup 3} realisiert. Dieser Musterspeicher wurde im November 1996 installiert und wird seither kontinuierlich in den entsprechenden Erprobungsstufen betrieben. Der Nachweis der Langlebigkeit der eingesetzten Materialien wurde experimentell erbracht. (orig.)

  9. Multi-functional biomass systems

    Energy Technology Data Exchange (ETDEWEB)

    Dornburg, V.

    2004-12-01

    The central research question of this thesis is: What is the potential of multi-functional biomass systems to improve the costs and the land use efficiency of saving non-renewable energy consumption and reducing GHG (greenhouse gases) emissions in quantitative terms? Therefore, in the following chapters the performance of multi-functional biomass systems is quantified. Biomass system costs are investigated from a societal perspective using e.g. low discount rates. A main focus will be on the review of methodologies for accounting GHG emissions, non-renewable energy consumption, agricultural land use and costs as well as the adaptation of these methodologies to special aspects of multifunctional biomass use. The analysis of the potential benefits of multi-functional biomass systems is carried out by several case studies of biomass systems including various waste treatment technologies for the short term that appeared promising after a first review. Because at present the shift of biomass production to more favourable areas seems to be an alternative for more efficient biomass systems, these case studies are situated in Europe and concentrate on Poland in order to investigate the potential of biomass production in the new EU-member states of Central Eastern Europe. In Chapter 2 of this thesis, the concept of multi-product use and its potential impacts on fuel costs of bioenergy and GHG emission reduction per area of agricultural land use are investigated. Especially, the relation between the economic value and the specific GHG emission reduction of a possible material application and the potential benefits of multiproduct use is analysed. Material uses regarded for multi-product use are the use of wheat grains for food, wheat straw for animal litter, hemp bark fibres for reinforced composites, hemp core fibres for animal litter, hemp seeds for food and cosmetics and poplar wood chips for pulp. For energy uses parts of the crops are used as solid fuel for electricity

  10. Lebensmittel und Energiepflanzen aus biologischem Anbau - unerwünschte oder nachhaltige Möglichkeiten?

    OpenAIRE

    Schäfer, Winfried

    2008-01-01

    Crop production is a conversion process of sun energy into biomass. Consequently, both the cultivation area and the insolation stroking this area limit the agroenergy output of the globe. Cultivation measures support the photosynthetic conversion process. Although organic cultivation measures require less energy than mainstream agriculture, the overall efficiency remains below 1%. Nevertheless, agroenergy production is captivating with many win-win situations: environmentally neutral bio-fuel...

  11. Experiences with biomass in Denmark

    DEFF Research Database (Denmark)

    Gregg, Jay Sterling; Bolwig, Simon; Solér, Ola;

    The Bioenergy Department in SENER have requested assistance with planning for the deployment of bioenergy (Biomass, biogas and waste incineration) in Mexico and information on Danish experiences with developing policy initiatives promoting bioenergy. This introduction to the Danish experiences...

  12. Washington State biomass data book

    International Nuclear Information System (INIS)

    This is the first edition of the Washington State Biomass Databook. It assess sources and approximate costs of biomass fuels, presents a view of current users, identifies potential users in the public and private sectors, and lists prices of competing energy resources. The summary describes key from data from the categories listed above. Part 1, Biomass Supply, presents data increasing levels of detail on agricultural residues, biogas, municipal solid waste, and wood waste. Part 2, Current Industrial and Commercial Use, demonstrates how biomass is successfully being used in existing facilities as an alternative fuel source. Part 3, Potential Demand, describes potential energy-intensive public and private sector facilities. Part 4, Prices of Competing Energy Resources, shows current suppliers of electricity and natural gas and compares utility company rates. 49 refs., 43 figs., 72 tabs

  13. Washington State biomass data book

    Energy Technology Data Exchange (ETDEWEB)

    Deshaye, J.A.; Kerstetter, J.D.

    1991-07-01

    This is the first edition of the Washington State Biomass Databook. It assess sources and approximate costs of biomass fuels, presents a view of current users, identifies potential users in the public and private sectors, and lists prices of competing energy resources. The summary describes key from data from the categories listed above. Part 1, Biomass Supply, presents data increasing levels of detail on agricultural residues, biogas, municipal solid waste, and wood waste. Part 2, Current Industrial and Commercial Use, demonstrates how biomass is successfully being used in existing facilities as an alternative fuel source. Part 3, Potential Demand, describes potential energy-intensive public and private sector facilities. Part 4, Prices of Competing Energy Resources, shows current suppliers of electricity and natural gas and compares utility company rates. 49 refs., 43 figs., 72 tabs.

  14. Biomass energy in Central America

    International Nuclear Information System (INIS)

    The objective of this paper is to introduce the concept of biomass to energy issues and opportunities in Central America. In this region, made up of seven countries (Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua and Panama), the biomass sector has the potential to play a crucial role in alleviating the environmental and development predicaments faced by all economies of the region. This paper assesses the available biomass resources at the regional and country levels and gives an overview of the current utilization of biomass fuels. It also describes the overall context in which the biomass-to-energy initiatives are immersed. At the regional level, biomass energy consumption accounts for more than 50% of total energy consumption. In regard to the utilization of biomass for energy purposes, it is clear that Central America faces a critical juncture at two levels, both mainly in rural areas: in the productive sector and at the household level. The absence of sustainable development policies and practices has jeopardized the availability of biomass fuels, particularly wood. Firewood is an important source of energy for rural industries such as coffee processing, which is one of the largest productive activities in the region. This paper comments on some of the most successful technological innovations already in place in the region, for instance, the rapid development of co-generation projects by the sugar cane industry, especially in El Salvador and Guatemala, the substitution of coffee husks for firewood in coffee processing plants in Costa Rica and El Salvador and the sustainable use of pine forests for co-generation in Honduras. Only one out of every two inhabitants in Central America now has access to electricity from the public grid. Biomass fuels, mainly firewood but also, to a lesser extent, other crop residues such as corn stalks, are the main source of energy for cooking and heating by most of the population. (It is foreseen that by the end

  15. Solar Thermal Power Generation 2000: solar-assisted district heating, tight sealing of pit water storage tanks made out of pre-stressed concrete; Solarthermie 2000, TP3: Solarunterstuetzte Nahwaermeversorgung: Dichte Heisswasser - Waermespeicher aus Hochleistungsbeton. Erdbeckenspeicher aus Hochleistungsbeton

    Energy Technology Data Exchange (ETDEWEB)

    Reineck, K.H.; Lichtenfels, A.; Schlaich, J. [Stuttgart Univ. (Germany). Inst. fuer Konstruktion und Entwurf 2

    1998-12-31

    In 1996 the two large heat storage tanks in Hamburg-Bramfeld (4,750 cubic metres) and Friedrichshafen-Wiggenhausen (12,000 cubic metres) were built out of concrete with an inner stainless steel lining. This was a big step towards economic efficiency. The research project ``Tight sealing of pit water storage tanks made out of pre-stressed concrete`` was launched by the BMBF in order to show that the concrete construction will not only bear loads but also ensure sealing. Building costs for underground hot water storage tanks could then be reduced by at least 25%. The first results of this research project are presented. The paper also contains recommendations for the further development of heat storage tanks built with pre-stressed concrete. (orig.) [Deutsch] Im Jahre 1996 wurden die beiden grossen Waermespeicher in Hamburg-Bramfeld mit einem Volumen von 4.750 m{sup 3} und in Friedrichshafen-Wiggenhausen mit 12.000 m{sup 3} aus Beton mit innenliegender Edelstahlauskleidung fertiggestellt. Mit dem Bau dieser beiden Grossspeicher konnte ein richtungsweisender Schritt hin zur Wirtschaftlichkeit gemacht werden, wie man es in Studien vor 15 Jahren nicht fuer moeglich hielt. Mit dem BMBF - Forschungsvorhaben `Dichte Heisswasser - Waermespeicher aus Hochleistungsbeton` soll gezeigt werden, dass das Betontragwerk nicht nur Lasten abtragen sondern auch die Funktion der Abdichtung uebernehmen kann. Damit sollen die Baukosten fuer unterirdische Heisswasser-Waermespeicher um mindestens 25% gesenkt werden. Es werden die ersten Ergebnisse dieses Forschungsvorhabens mitgeteilt und Empfehlungen fuer die weitere Entwicklung von Waermespeichern aus Hochleistungsbeton gegeben. (orig.)

  16. Energy from biomass and waste

    OpenAIRE

    FAAIJ A.p.c.

    2001-01-01

    Biomass, a broad term for all organic matter of plants, trees and crops, is currently regarded as a renewable energy source which can contribute substantially to the world's energy supply in the future. Various scenarios for the development of energy supply and demand, such as compiled by the World Energy Council (WEC), the Intergovernmental Panel on Climate Change (IPCC), Shell and the Stockholm Environmental Institute (SEI), indicate that biomass has the potential to make a large contributi...

  17. Refining fast pyrolysis of biomass

    OpenAIRE

    Westerhof, Roel Johannes Maria

    2011-01-01

    Pyrolysis oil produced from biomass is a promising renewable alternative to crude oil. Such pyrolysis oil has transportation, storage, and processing benefits, none of which are offered by the bulky, inhomogeneous solid biomass from which it originates. However, pyrolysis oil has both a different composition to and different properties from crude oil. This makes its direct use in those applications and conversion processes originally developed for fossil feeds problematic. Improvement of the ...

  18. Improved biomass Injera stove- Mirte

    International Nuclear Information System (INIS)

    The status report of 1994 - 1995 shows as the need to design an improved biomass stove for Injera was recognized. The marketing began in mid-1994 with a Mirte which showed even higher efficiencies in laboratory, using 50 percent less woody biomass than the open fire. By early 1994 several hundreds Mirte stoves had been sold in Addis Ababa at non-subsidized prices. The Mirte is currently produced on a large-scale by building materials companies. 3 figs. 1 tab

  19. Biogas from lignocellulosic biomass

    Energy Technology Data Exchange (ETDEWEB)

    Berglund Odhner, Peter; Schabbauer, Anna [Grontmij AB, Stockholm (Sweden); Sarvari Horvath, Ilona; Mohseni Kabir, Maryam [Hoegskolan i Boraas, Boraas (Sweden)

    2012-01-15

    Grontmij AB has cooperated with the University of Boraas to evaluate the technological and economical possibilities for biogas production from substrates containing lignocellulose, such as forest residues, straw and paper. The state of knowledge regarding biogas production from cellulosic biomass has been summarized. The research in the field has been described, especially focusing on pretreatment methods and their results on increased gas yields. An investigation concerning commercially available pretreatment methods and the cost of these technologies has been performed. An economic evaluation of biogas production from lignocellulosic materials has provided answers to questions regarding the profitability of these processes. Pretreatment with steam explosion was economically evaluated for three feedstocks - wood, straw and paper - and a combination of steam explosion and addition of NaOH for paper. The presented costs pertain to costs for the pretreatment step as it, in this study, was assumed that the pretreatment would be added to an existing plant and the lignocellulosic substrates would be part of a co-digestion process. The results of the investigation indicate that it is difficult to provide a positive net result when comparing the cost of pretreatment versus the gas yield (value) for two of the feedstocks - forest residues and straw. This is mainly due to the high cost of the raw material. For forest residues the steam pretreatment cost exceeded the gas yield by over 50 %, mainly due to the high cost of the raw material. For straw, the production cost was similar to the value of the gas. Paper showed the best economic result. The gas yield (value) for paper exceeded the pretreatment cost by 15 %, which makes it interesting to study paper further.

  20. Biomass conversion processes for energy and fuels

    Science.gov (United States)

    Sofer, S. S.; Zaborsky, O. R.

    The book treats biomass sources, promising processes for the conversion of biomass into energy and fuels, and the technical and economic considerations in biomass conversion. Sources of biomass examined include crop residues and municipal, animal and industrial wastes, agricultural and forestry residues, aquatic biomass, marine biomass and silvicultural energy farms. Processes for biomass energy and fuel conversion by direct combustion (the Andco-Torrax system), thermochemical conversion (flash pyrolysis, carboxylolysis, pyrolysis, Purox process, gasification and syngas recycling) and biochemical conversion (anaerobic digestion, methanogenesis and ethanol fermentation) are discussed, and mass and energy balances are presented for each system.

  1. Recycling systems and material flows from the viewpoint of thermal waste treatment; Kreislaufwirtschaft- und Stoffstrombetrachtungen aus Sicht der thermischen Abfallbehandlung

    Energy Technology Data Exchange (ETDEWEB)

    Johnke, B. [Umweltbundesamt, Berlin (Germany); Mast, P.G. [Tauw Umwelt GmbH, Berlin (Germany)

    1998-09-01

    Material stream analysis can serve as a basis for decisions on which materials should be kept in circulation, and in what quantity, and which materials it is better to remove from the recycling system and dispose of as waste. Wastes destined for disposal are mostly transferred to waste treatment plants and landfills. The role of thermal treatment as part of the disposal system is to destroy or decompose organic pollutants contained in the waste, concentrate and remove inorganic pollutants, make the heat arising during the treatment process available for use as energy, and make the greatest possible physical use of the treatment residues. The present paper reviews the current regulations for the promotion of recycling and investigates selected material streams and the fate of these materials. In connection with the residue quality of household waste incineration slag as a thermal waste treatment product it also considers the influence of waste management measures on wastes destined for disposal. [Deutsch] Stoffstrombetrachtungen koennen als Grundlage fuer Entscheidungen dienen, welche Stoffe in welchem Umfang im Kreislauf verbleiben oder wieder integriert werden sollten und welche besser als Abfall zur Beseitigung aus dem Kreislaufsystem auszuschleusen sind. Fuer Abfaelle zur Beseitigung wird diese Aufgabe i.d.R. von thermischen Abfallbehandlungsanlagen und Deponien uebernommen. Im Rahmen der Entsorgung kommt der thermischen Behandlung dabei die Aufgabe zu, die im Abfall zur Beseitigung enthaltenen organischen Schadstoffe zu zerstoeren oder abzubauen, anorganische Schadstoffe aufzukonzentrieren und auszuschleusen, die bei dem Behandlungsprozess entstehende Waerme einer weitgehenden Energienutzung zuzufuehren und die Rueckstaende aus der Behandlung so weit wie moeglich stofflich zu verwerten. Nachfolgend sollen insbesondere die Regelungen zur Unterstuetzung der Kreislaufwirtschaft, ausgewaehlte Stofffluesse und der Verbleib dieser Stoffe und Materialien und der

  2. Pyrolytic sugars from cellulosic biomass

    Science.gov (United States)

    Kuzhiyil, Najeeb

    Sugars are the feedstocks for many promising advanced cellulosic biofuels. Traditional sugars derived from starch and sugar crops are limited in their availability. In principle, more plentiful supply of sugars can be obtained from depolymerization of cellulose, the most abundant form of biomass in the world. Breaking the glycosidic bonds between the pyranose rings in the cellulose chain to liberate glucose has usually been pursued by enzymatic hydrolysis although a purely thermal depolymerization route to sugars is also possible. Fast pyrolysis of pure cellulose yields primarily levoglucosan, an anhydrosugar that can be hydrolyzed to glucose. However, naturally occurring alkali and alkaline earth metals (AAEM) in biomass are strongly catalytic toward ring-breaking reactions that favor formation of light oxygenates over anhydrosugars. Removing the AAEM by washing was shown to be effective in increasing the yield of anhydrosugars; but this process involves removal of large amount of water from biomass that renders it energy intensive and thereby impractical. In this work passivation of the AAEM (making them less active or inactive) using mineral acid infusion was explored that will increase the yield of anhydrosugars from fast pyrolysis of biomass. Mineral acid infusion was tried by previous researchers, but the possibility of chemical reactions between infused acid and AAEM in the biomass appears to have been overlooked, possibly because metal cations might be expected to already be substantially complexed to chlorine or other strong anions that are found in biomass. Likewise, it appears that previous researchers assumed that as long as AAEM cations were in the biomass, they would be catalytically active regardless of the nature of their complexion with anions. On the contrary, we hypothesized that AAEM can be converted to inactive or less active salts using mineral acids. Various biomass feedstocks were infused with mineral (hydrochloric, nitric, sulfuric and

  3. Fiscalini Farms Biomass Energy Project

    Energy Technology Data Exchange (ETDEWEB)

    William Stringfellow; Mary Kay Camarillo; Jeremy Hanlon; Michael Jue; Chelsea Spier

    2011-09-30

    In this final report describes and documents research that was conducted by the Ecological Engineering Research Program (EERP) at the University of the Pacific (Stockton, CA) under subcontract to Fiscalini Farms LP for work under the Assistance Agreement DE-EE0001895 'Measurement and Evaluation of a Dairy Anaerobic Digestion/Power Generation System' from the United States Department of Energy, National Energy Technology Laboratory. Fiscalini Farms is operating a 710 kW biomass-energy power plant that uses bio-methane, generated from plant biomass, cheese whey, and cattle manure via mesophilic anaerobic digestion, to produce electricity using an internal combustion engine. The primary objectives of the project were to document baseline conditions for the anaerobic digester and the combined heat and power (CHP) system used for the dairy-based biomass-energy production. The baseline condition of the plant was evaluated in the context of regulatory and economic constraints. In this final report, the operation of the plant between start-up in 2009 and operation in 2010 are documented and an interpretation of the technical data is provided. An economic analysis of the biomass energy system was previously completed (Appendix A) and the results from that study are discussed briefly in this report. Results from the start-up and first year of operation indicate that mesophilic anaerobic digestion of agricultural biomass, combined with an internal combustion engine, is a reliable source of alternative electrical production. A major advantage of biomass energy facilities located on dairy farms appears to be their inherent stability and ability to produce a consistent, 24 hour supply of electricity. However, technical analysis indicated that the Fiscalini Farms system was operating below capacity and that economic sustainability would be improved by increasing loading of feedstocks to the digester. Additional operational modifications, such as increased utilization of

  4. Zwangsrepatriierung als neues Instrument der Krisenintervention: zur Rückkehr der ruandischen Flüchtlinge aus den tansanischen Lagern

    OpenAIRE

    Schöpf, Michael

    2012-01-01

    "Die Bilder der Massenflucht von etwa 1,5 Millionen Ruandern im April 1994 aus ihrer Heimat in die Nachbarländer Zaire und Tansania sind immer noch präsent: Endlose, erschöpfte Menschenschlangen, die den mit Leichen angefüllten Grenzfluß zu Tansania überqueren und schließlich in einer hügeligen, spärlich besiedelten Landschaft angehalten werden, wo sie kampieren und mit Nothilfe versorgt werden sollen. Daraus entstanden die eng beieinander liegenden Flüchtlingslager für ca. 500.000 Personen i...

  5. Röntgenstrukturanalyse der ba3 Cytochrom-c Oxidase aus Thermus thermophilus und ihres Substrates Cytochrom-c552

    OpenAIRE

    Than, Manuel E.

    2007-01-01

    Die dreidimensionalen Strukturen der ba3 Cytocrom-c Oxidase aus dem Eubakterium Thermus thermophilus sowie ihres Substrates Cytochrom-c552 wurden mit den Methoden der Röntgenstrukturanalyse bei einer Auflösung von 2,4 Å bzw. 1,28 Å aufgeklärt. Die Analyse dieser Strukturen ermöglichte das Verständnis der besonderen biochemischen Eigenschaften dieser beiden Proteine bezüglich Thermostabilität, Protonenpumpaktivität, Reaktionsmechanismus und Elektronenübertragung im Vergleich zu typischen Vert...

  6. Freie Software als Entwicklungshelfer? Corporate Citizenship und der Digital Divide aus ökonomischer, ethischer und unternehmensstrategischer Sicht

    OpenAIRE

    Busch, Thorsten

    2007-01-01

    Die vorliegende Arbeit geht interdisziplinär der Frage nach, ob freie Software dabei helfen kann, den Digital Divide zu überwinden. Dabei zeichnet Autor Thorsten Busch zunächst kurz die Geschichte freier Software nach und erklärt, wie freie und proprietäre Software aus technischer und wirtschaftlicher Sicht funktionieren. Er zeigt, dass freie Software viele ökonomische und entwicklungspolitische Möglichkeiten bietet, die digitale Spaltung der Welt zu mindern - und dies nicht nur in so genannt...

  7. Der Tod im Leben. Einige Grundgedanken zu und aus Franz Rosenzweigs der Stern der Erlösung

    Directory of Open Access Journals (Sweden)

    Brasser Martin

    2012-01-01

    Full Text Available Franz Rosenzweig gilt als Existenzphilosoph, weil er das Thema des Todes ins Zentrum der Argumentation in seinem philosophisch-theologischen Hauptwerk Der Stern der Erlösung gestellt hat. Die Religion wird dort als der Ort verstanden, an dem der Tod nicht mehr wie im a-religiösen Leben aus dem Leben herausgedrängt werden muss. Wenn Religion Liebe ist, dann ist der Tod so Teil des Lebens wie er Teil der Liebe zwischen zwei Liebenden ist: als bejahter Bestandteil ihres gemeinsamen Lebens. Der Aufsatz versucht diese Argumentation nachzuzeichnen und zu plausibilisieren.

  8. Folgen der Zwangsemigration über drei Generationen : israelische Familien mit Großeltern aus Deutschland

    OpenAIRE

    Rosenthal, Gabriele; Völter, Bettina; Gilad, Noga

    1999-01-01

    "Wir waren ungefähr 200 (Jugendliche, d.V.) und man hat uns geteilt in fünf verschiedene Kibbuzim, das war August 1937 kamen wir an. Ein halbes Jahr hab ich nicht gesprochen, im Kibbuz K. sprachen die mit uns nur Hebräisch. Nach einem halben Jahr ein guter Freund von mir sagte einen Fluch auf Deutsch. Sag ich 'was, Du kannst Deutsch'. Er meinte 'heute kannst Du es schon wissen'. Das war schwer. Aber schwerer waren die Nachrichten aus Deutschland ... wir hatten mehr Angst, wir hörten mehr als ...

  9. Safety of controls when producing foodstuffs from wheat; Zuverlaessig handeln - Sicherheit der Steuerung beim Herstellen von Lebensmitteln aus Getreide

    Energy Technology Data Exchange (ETDEWEB)

    Flizikowski, J. [Technisch-Landwirtschaftliche Akademie, Bydgoszcz (Poland)

    1994-06-27

    The risks when producing foodstuffs from wheat include the ecological consideration of humans and their environment. Suitable groups of influences are determined for four basic potentials. The reliability of the control potential is to be examined. The procedure can be shown from a simple example of processing. (orig.) [Deutsch] Zur oekologischen Betrachtung des Menschen und seiner Umwelt gehoeren auch Risiken bei der Herstellung von Lebensmitteln aus Getreide. Fuer vier grundlegende Potentiale werden entsprechende Wirkungsgruppen ermittelt. Dabei ist die Zuverlaessigkeit des Steuerungspotentials zu untersuchen. Anhand eines einfachen Verarbeitungsbeispiels laesst sich die Vorgehensweise darstellen. (orig.)

  10. COFIRING BIOMASS WITH LIGNITE COAL

    Energy Technology Data Exchange (ETDEWEB)

    Darren D. Schmidt

    2002-01-01

    The University of North Dakota Energy & Environmental Research Center, in support of the U.S. Department of Energy's (DOE) biomass cofiring program, completed a Phase 1 feasibility study investigating aspects of cofiring lignite coal with biomass relative to utility-scale systems, specifically focusing on a small stoker system located at the North Dakota State Penitentiary (NDSP) in Bismarck, North Dakota. A complete biomass resource assessment was completed, the stoker was redesigned to accept biomass, fuel characterization and fireside modeling tests were performed, and an engineering economic analysis was completed. In general, municipal wood residue was found to be the most viable fuel choice, and the modeling showed that fireside problems would be minimal. Experimental ash deposits from firing 50% biomass were found to be weaker and more friable compared to baseline lignite coal. Experimental sulfur and NO{sub x} emissions were reduced by up to 46%. The direct costs savings to NDSP, from cogeneration and fuel saving, results in a 15- to 20-year payback on a $1,680,000 investment, while the total benefits to the greater community would include reduced landfill burden, alleviation of fees for disposal by local businesses, and additional jobs created both for the stoker system as well as from the savings spread throughout the community.

  11. Overview of biomass conversion technologies

    International Nuclear Information System (INIS)

    A large part of the biomass is used for non-commercial purposes and mostly for cooking and heating, but the use is not sustainable, because it destroys soil-nutrients, causes indoor and outdoor pollution, adds to greenhouse gases, and results in health problems. Commercial use of biomass includes household fuelwood in industrialized countries and bio-char (charcoal) and firewood in urban and industrial areas in developing countries. The most efficient way of biomass utilization is through gasification, in which the gas produced by biomass gasification can either be used to generate power in an ordinary steam-cycle or be converted into motor fuel. In the latter case, there are two alternatives, namely, the synthesis of methanol and methanol-based motor fuels, or Fischer-Tropsch hydrocarbon synthesis. This paper deals with the technological overview of the state-of-the-art key biomass-conversion technologies that can play an important role in the future. The conversion routes for production of Heat, power and transportation fuel have been summarized in this paper, viz. combustion, gasification, pyrolysis, digestion, fermentation and extraction. (author)

  12. Biomass living energy; Biomasse l'energie vivante

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    Any energy source originating from organic matter is biomass, which even today is the basic source of energy for more than a quarter of humanity. Best known for its combustible properties, biomass is also used to produce biofuels. This information sheet provides also information on the electricity storage from micro-condensers to hydroelectric dams, how to save energy facing the increasing of oil prices and supply uncertainties, the renewable energies initiatives of Cork (Ireland) and the Switzerland european energy hub. (A.L.B.)

  13. Wind, biomass, hydrogen: renewable energies; Vent, biomasse, hydrogene: energies renouvelables

    Energy Technology Data Exchange (ETDEWEB)

    Rakotosson, V.; Brousse, Th.; Guillemet, Ph.; Scudeller, Y.; Crosnier, O.; Dugas, R.; Favier, F.; Zhou, Y.; Taberna, P.M.; Simon, P.; Toupin, M.; Belanger, D.; Ngo, Ch.; Djamie, B.; Guyard, Ch.; Tamain, B.; Ruer, J.; Ungerer, Ph.; Bonal, J.; Flamant, G

    2007-06-15

    This press kit gathers a series of articles about renewable energies: the compared availabilities of renewable energy sources (comparison at a given time); offshore wind turbines (projects under development, cost optimisation); hydrogen for transports: present day situation (production, transport and storage, hydrogen conversion into mechanical energy, indirect use in biomass conversion); biomass: future carbon source (resource potential in France, pyrolysis and fermentation, development of biofuels and synthetic fuels, stakes for agriculture); beneficial standards for the heat pumps market (market organization and quality approach); collecting solar energy (solar furnaces and future solar power plants, hydrogen generation). (J.S.)

  14. Annual report 1999 of the air pollution monitoring network of the German Federal Environmental Agency; Jahresbericht 1999 aus dem Messnetz des Umweltbundesamtes

    Energy Technology Data Exchange (ETDEWEB)

    Beilke, S.; Uhse, K. [comps.

    2000-12-01

    In this annual report the results of the air pollution monitoring network of the German Federal Environmental Agency (FEA) are presented for the year 1999. The network consists of 23 stations (9 stations with personnel and 14 automatically working container stations) which are situated in rural areas. As the data set was thoroughly quality controlled reliable statements on trends can be made. (orig.) [German] Im vorliegenden Jahresbericht werden die Ergebnisse aus dem Messnetz des Umweltbundesamtes fuer das Jahr 1999 vorgestellt, interpretiert und mit den Messungen aus frueheren Jahren verglichen. Das UBA-Messnetz besteht heute aus insgesamt 23 in laendlichen Regionen gelegenen Stationen, wovon 9 Messstellen personell besetzt und 14 automatisch arbeitende Containerstationen sind. Die Datensaetze sind in sich homogen, d.h. es wurden im Verlauf der Jahre keine gravierenden Veraenderungen an den Messbedingungen vorgenommen, weder bei der Probenahme noch bei der Analytik. Die Daten wurden einer eingehenden Qualitaetspruefung unterzogen, sowohl intern als auch bei internationalen Ringvergleichen der Analysenverfahren. (orig.)

  15. Emission factors and chemical characterisation of fine particulate emissions from modern and old residential biomass heating systems determined for typical load cycles; Emissionsfaktoren und chemische Charakterisierung von Feinstaubemissionen moderner und alter Biomasse-Kleinfeuerungen ueber typische Tageslastverlaeufe

    Energy Technology Data Exchange (ETDEWEB)

    Kelz, Joachim [BIOENERGY 2020+ GmbH, Graz (Austria); Brunner, Thomas; Obernberger, Ingwald [BIOENERGY 2020+ GmbH, Graz (Austria); Technische Universitaet Graz, Institut fuer Prozess- und Partikeltechnik, Graz (Austria); BIOS BIOENERGIESYSTEME GmbH, Graz (Austria)

    2012-12-15

    .C-Emissionen) entstehen, und den Feinstaubemissionen. Es wurde festgestellt, dass moderne Biomasse-Kleinfeuerungsanlagen wesentlich (bis zu einem Faktor 100) geringere gas- und partikelfoermige Emissionen aufweisen als aeltere Technologien. Weiters emittieren automatisch beschickte Systeme signifikant geringere gas- und partikelfoermige Emissionen als haendisch beschickte Systeme. Die Feinstaubemissionen von modernen und automatisch geregelten Biomasse-Kleinfeuerungen bestehen zum Grossteil aus Alkalimetallverbindungen, waehrend organische Kohlenstoffverbindungen und Russ die Zusammensetzung der Feinstaeube aus alten und nicht geregelten Systemen dominieren. Es stehen nun erstmals umfangreiche Daten zu gas- und partikelfoermigen Emissionen ueber fuer die jeweilige Biomasse-Kleinfeuerung typische, realitaetsnahe Tageslastverlaeufe zur Verfuegung, die deutliche Korrelationen zwischen Ausbrandqualitaet, Partikelemission und chemischer Zusammensetzung der Partikel zeigen. (orig.)

  16. Energy from biomass and waste

    International Nuclear Information System (INIS)

    This report provides a review of the Commission of the European Communities (CEC) Energy Demonstration Programme in the sector of Energy from biomass and waste, and examines the current status of the energy technologies associated with the sector, in relation to projects supported under the Programme, those included under various national programmes and by reference to the published literature. Detailed overviews of five sub-categories represented in the Energy from biomass and waste sector are presented to illustrate their relative significance in terms of estimated energy potential, technological and economic status and the nature of future research, development and demonstration needs. Finally the potential role of the biomass and waste energy technologies in meeting the energy needs of the developing world is discussed. 33 refs; 2 figs; 11 tabs

  17. Biomass furnace: projection and construction

    Energy Technology Data Exchange (ETDEWEB)

    Melo, Fernanda Augusta de Oliveira; Silva, Juarez Sousa e; Silva, Denise de Freitas; Sampaio, Cristiane Pires; Nascimento Junior, Jose Henrique do [Universidade Federal de Vicosa (DEA/UFV), MG (Brazil). Dept. de Engenharia Agricola

    2008-07-01

    Of all the ways to convert biomass into thermal energy, direct combustion is the oldest. The thermal-chemical technologies of biomass conversion such as pyrolysis and gasification, are currently not the most important alternatives; combustion is responsible for 97% of the bio-energy produced in the world (Demirbas, 2003). For this work, a small furnace was designed and constructed to use biomass as its main source of fuel, and the combustion chamber was coupled with a helical transporter which linked to the secondary fuel reservoir to continually feed the combustion chamber with fine particles of agro-industrial residues. The design of the stove proved to be technically viable beginning with the balance of mass and energy for the air heating system. The proposed heat generator was easily constructed as it made use of simple and easily acquired materials, demanding no specialized labor. (author)

  18. A nanosensor for in vivo selenol imaging based on the formation of AuSe bonds.

    Science.gov (United States)

    Hu, Bo; Cheng, Ranran; Liu, Xiaojun; Pan, Xiaohong; Kong, Fanpeng; Gao, Wen; Xu, Kehua; Tang, Bo

    2016-06-01

    Selenol is a key metabolite of Na2SeO3 and plays an important role in many physiological and pathological processes. The real-time monitoring of selenol is of scientific interest for understanding the anti-cancer mechanism of Na2SeO3. Based on selenol's ability to specifically break AuS bonds and form more stable AuSe bonds on the surfaces of gold nanoparticles (AuNPs), we developed a novel near-infrared fluorescent nanosensor (Cy5.5-peptide-AuNPs) for detecting selenol. The nanosensor exhibited rapid response to selenol with high selectivity and sensitivity, and it was successfully used to image changes in the selenol level in HepG2 cells during Na2SeO3-induced apoptosis. Moreover, in vivo fluorescence imaging of selenol was obtained from H22 tumor-bearing mice injected with both the nanosensor and sodium selenite. The results showed that the tumor cell apoptosis induced by Na2SeO3 is correlated with high-level of selenol under hypoxic conditions. We believe that this nanosensor could serve as a powerful tool for monitoring selenol and exploring the physiological function of selenol in a variety of physiological and pathological contexts and that the probe-designed strategy will provide a new platform for research on relevant selenium chemistry. PMID:27043769

  19. Production of oil and coke from sludges containing organic pollutants; Gewinnung von Oel und Koks aus organisch belasteten Schlaemmen

    Energy Technology Data Exchange (ETDEWEB)

    Steger, M. [Martin Steger GmbH, Eggenfelden (Germany); Meissner, W.; Herold, R. [Max Aicher Umwelttechnik GmbH, Freilassing (Germany)

    1998-09-01

    Since the mid-eighties, Messrs. Max Aicher Umwelttechnik GmbH at Hammerau, Germany have been investigating sewage sludge pyrolysis. Laboratory experiments and semi-industrial investigations led to the construction of a combined sludge drying and conversion plant (``Aicher sludge recycling process``), in which the organic sludge fraction is converted into recyclable or combustible oils. Carbon is obtained as a by-product in solid form as conversion coke which can be utilized. Apart from sewage sludge, also industrial sludges with high organic fractions can be processed, e.g. sludges and sewage sludges from petroleum processing. (orig.) [Deutsch] In der Bundesrepublik Deutschland beschaeftigt sich die Max Aicher Umwelttechnik GmbH in Hammerau seit Mitte der Achtzigerjahre mit der Niedertemperaturkonvertierung (Pyrolyse) von Klaerschlamm. Versuche im Labor- und im halbtechnischen Massstab fuehrten zur Realisierung einer betriebstechnischen Anlage mit den Komponenten Schlammtrocknung und Konvertierung. Ziel des Aicher-Schlamm-Recycling-Verfahrens ist die Umwandlung der organischen Schlammfraktion in stofflich und energetisch verwertbare Oele. Bei der Umwandlung entsteht fixer Kohlenstoff, der im festen Rueckstand (Konversionskoks) angereichert wird. Neben dem gewonnenen Oel ist auch der produzierte Koks verwertbar. Einsatzstoffe fuer das Verfahren sind neben Klaerschlamm aus der kommunalen Abwasserreinigung vor allem industrielle Schlaemme mit hohen organischen Anteilen z.B. Schlaemme und Klaerschlaemme aus der Erdoelverarbeitung. (orig.)

  20. Environmentally friendly utilization of biomass

    OpenAIRE

    Grimm, Alejandro

    2007-01-01

    The thesis deals with various ways of utilization of biomass. Chapter 1 compares three biomass types: birch wood Betula sp., marine brown alga Fucus vesiculosus, and terrestrial moss Pleurozium schreberi, as precursors for preparation of biosorbents for removal of copper ions from diluted water solutions. Small sample doses (0.5 g/100ml) of the biosorbents prepared from alga and moss enabled more than 90 % removal of Cu (II) ions from diluted water solutions (5-20 mg/l). The sample from birch...

  1. Biomass: Past, present and future

    International Nuclear Information System (INIS)

    In this address, the author discusses the resource potential of biomass. Biomass is the principal source of energy for three-fourths of the world's population and contributes energy equivalent to 35 million barrels of oil per day globally. Other countries are growing fuel crops and producing fuel at competitive prices. The US and Europe have areas of surplus agricultural land that could be used to produce energy crops; however, since harvesting and storage often represent 65-80% of delivered fuel costs, improvements in this area are needed

  2. International biomass. International markets of biomass-energy - Public synthesis

    International Nuclear Information System (INIS)

    This publication proposes a synthesis of a study which aimed at analysing the present and future place of wood-energy in the European Union as the main renewable resource used to produce heat and electricity. This study comprised an analysis of European markets of solid biomass and of regulation, case studies on wood-energy producer markets (North America, Eastern Europe, Brazil and Africa), a study of preparation modes (shredding, granulation, roasting) and biomass transport. This study is based on bibliographical searches in national and European sources, and on field data collected by the various bodies involved in this study. This synthesis notably discusses the following issues: solid biomass is the main renewable resource for the EU and has many applications; European objectives for solid biomass by 2020 are very ambitious; markets are becoming international to face the EU's increasing demand; pellet production in North America is strongly increasing; in Europe, eastern European countries are the main exporters; Brazil has an export potential which is still to be confirmed; the African trade with Europe is still in its infancy. Finally, the development perspectives of roasted wood trade are discussed

  3. Charakterisierung von a-Si:H/c-Si-Heterokontakten und dünnen Schichten aus hydrogenisiertem amorphem Silizium, hergestellt mittels gepulstem DC-Magnetronsputtern

    OpenAIRE

    Nobis, Frank

    2013-01-01

    Dünne Schichten aus hydrogenisiertem amorphem Silizium a-Si:H spielen für die Photovoltaik eine wichtige Rolle. Einerseits kommt für die Dünnschicht-Photovoltaik unterschiedlich dotiertes a-Si:H in den Schichten einer p-i-n-Solarzelle zur Anwendung, andererseits stellen Heterokontakt-Solarzellen aus amorphem und kristallinem Silizium (a-Si:H/c-Si) wegen ihres hohen Wirkungsgrades derzeit ein sehr aktuelles Forschungsthema dar. Die Abscheidung der a-Si:H-Schichten im Rahmen dieser A...

  4. Interdisciplinarity, more than just a word? Findings of a case study on urban water management; Ist die Interdisziplinaritaet mehr als ein Schlagwort? Erkenntnisse aus einer siedlungswasserwirtschaftlichen Fallstudie

    Energy Technology Data Exchange (ETDEWEB)

    Krejci, V. [Eidgenoessische Anstalt fuer Wasserversorgung, Abwasserreinigung und Gewaesserschutz, Duebendorf (Switzerland)

    2000-07-01

    This is the first interdisciplinary approach to urban water and waste water managment. The author presents the knowledge acquired during the project. [German] Die ganzheitliche Betrachtung der Wasserwirtschaft in urbanen Gebieten ist sowohl in der Forschung als auch in der Praxis neu. Zwischen der Bearbeitung eines Forschungsprojektes und eines Ingenieurprojektes gibt es grundsaetzliche Differenzen, trotzdem sind wir der Meinung, dass es bezueglich der interdisziplinaeren Aspekte und der ganzheitlichen Betrachtung der Wasserwirtschaft sowohl in der Forschung als auch in der Praxis aehnliche Probleme gibt. Aus diesem Grunde wird in dieser Arbeit versucht ueber einige Erfahrungen aus dem interdisziplinaeren und ganzheitlichen Forschungsprojekt zu berichten. (orig.)

  5. Die Bedeutung des instrumentalen Spiels im Höllenakt aus Rameaus Castor et Pollux

    Directory of Open Access Journals (Sweden)

    Büttner, Fred

    2013-12-01

    Full Text Available In modern Music History the continuity of instrumental playing gets increasingly broken up and changes into discontinuity – a process which, in the works of the Viennese Classic, culminates in a compositional mindset that brings the continuous instrumental fl ow and its abrupt break-up to ideal balance. A significant stadium in this development is formed by the music of "Opera buffa" as new genre in the first half of the eighteenth century, as it is represented by Pergolesi’s Serva padrona. On the other hand the French contribution, which makes itself felt with Rameau’s "Tragédies en musique", should not be neglected. A detailed study of the Hell Act from Castor et Pollux shows that also in the works of Rameau instrumental playing, even if it is able to realize, with its at times disquieting motivity, once again the old continuity of instrumental music, gets repeatedly stroken by discontinuity, in which the exciting actions on the stage find their musical expression.[de] In der neueren Musikgeschichte wird das Kontinuum des instrumentalen Spiels zunehmend aufgebrochen und in Diskontinuität verwandelt – ein Vorgang, der mit dem Schaffen der Wiener Klassik in einer kompositorischen Faktur gipfelt, in der die fortlaufende Spielbewegung im Taktsystem und deren abruptes Aufbrechen zu idealem Ausgleich gebracht werden. Eine wesentliche Station auf diesem Entwicklungsgang bildet, wie Thrasybulos Georgiades anschaulich gezeigt hat, die Musik der "Opera buffa" als neuer Gattung in der ersten Hälfte des 18. Jahrhunderts, wie sie namentlich durch Pergolesis Serva padrona vertreten wird. Darüber sollte man jedoch den französischen Anteil nicht vernachlässigen, der sich in Rameaus "Tragédies en musique" eindrucksvoll zu Wort meldet. Eine Betrachtung des Höllenakts aus Castor et Pollux macht deutlich, dass auch bei Rameau das instrumentale Spiel, obwohl es mit seiner zuweilen beunruhigenden Motorik noch einmal das alte Kontinuum der

  6. Extrakorporale Stoßwellentherapie (ESWT aus orthopädischer und traumatologischer Sicht

    Directory of Open Access Journals (Sweden)

    Auersperg V

    2004-01-01

    Full Text Available Die ESWT ist eine derzeit sehr intensiv erforschte Therapieform und im Vergleich mit anderen Therapien auch durchaus hohen EBM-Kriterien entsprechend. Die Wirkungsweise der ESWT ist bis heute nicht ganz geklärt, aus den bisher durchgeführten Untersuchungen (meist Tierversuche lassen sich folgende Wirkungen unterscheiden: ● Zerreißungen (Steindesintegration, Knochenfissuren, Gewebszerreißung ● Kavitation (mit Bildung von Jet streams und freien Radikalen ● Thermische und chemische Effekte ● Molekularbiologische und zelluläre Veränderungen ● Hyperstimulationsanalgesie (gate-control-Mechanismus Diese Wirkungen rufen sehr komplexe Veränderungen im Gewebe hervor, die beispielsweise zur Knochenneubildung führen, aber auch Neoangiogenese und Nervenveränderungen, die beim Verständnis der Effekte der ESWT an den Weichteil-Indikationen durchaus auch Erklärungshilfen sind. Die meisten, bisher veröffentlichten, klinischen Studien haben biometrische Mängel und ihre Ergebnisse sind sehr kontrovers. Die angeführten Indikationen sind die am meisten erforschten und sollen hier bewertet werden. Da für weitere Indikationen die Studien-Daten so spärlich sind, werden sie hier nicht diskutiert. Die Indikationen mit statistisch signifikant guten Behandlungsergebnissen sind: ● Die Tendinitis calcarea (mit niedrigenergetischer und hochenergetischer ESWT ● Die Fasciitis plantaris mit und ohne plantarem Fersensporn (mit niedrigenergetischer und hochenergetischer ESWT ● Die Epicondylitis humeri lateralis (mit niedrigenergetischer und hochenergetischer ESWT ● Verzögerte Knochenbruchheilung (mit hochenergetischer ESWT ● Pseudoarthrosen (mit hochenergetischer ESWT Für die Durchführung, die Anzahl der Impulse und die Intervallänge zwischen den ESWT-Sitzungen läßt sich keine Regel ableiten, dies wird sich vernünftigerweise hauptsächlich an den lokalen Gegebenheiten orientieren. Die bisher (als Richtlinie der ISMST von 2000 → http

  7. Risk energy transition. Ways out of the impasse; Risiko Energiewende. Wege aus der Sackgasse

    Energy Technology Data Exchange (ETDEWEB)

    Kleinknecht, Konrad [Muenchen Univ., Garching (Germany). Fakultaet fuer Physik

    2015-07-01

    The exit of the use of nuclear energy in Germany, it was decided in the summer of 2011 in a rush. Now it is becoming obvious that there is no realistic plan for the conversion of energy supply in the envisaged deadline of ten years. For the conversion of our entire power supply and therefore our economy the period is too short. It lacks a robust empirical reason that have to deal with the issues of security of supply, the affordability, the impact on economic development and social justice. Thus, this treansition threatens to fail at their contradictions. Konrad Kleinknecht tries in his book, to name the problems and to find answers. For him, arise the following questions: What are our opportunity to replace with wind and solar power to replace a part of the power supply? What power sources provide secured capacity? Can we dispense with coal-fired plants? Do we need new power lines? How power may be stored? How real is the risk of blackouts in windless nights? Will the power prices continue to rise? Can be avoided the major risks of the energy transition with a fundamental reform of the Renewable Energies Act (EEG)? The power supply must serve the common good and benefit the industrial site Germany. A blackout would be a disaster for the whole country, it must be avoided at all events. How can we manage this, the author present in his evocative book. [German] Der Ausstieg aus der Nutzung der Kernenergie in Deutschland wurde im Sommer 2011 im Eiltempo beschlossen. Jetzt zeigt sich, dass es keinen realistischen Plan fuer den Umbau der Energieversorgung in der vorgesehenen Frist von zehn Jahren gibt. Fuer die Umstellung unserer gesamten Stromversorgung und damit unserer Wirtschaft ist der Zeitraum zu kurz. Es fehlt eine belastbare empirische Begruendung, die Fragen der Versorgungssicherheit, der Finanzierbarkeit, der Auswirkungen auf die wirtschaftliche Entwicklung und die soziale Gerechtigkeit behandeln muesste. Somit droht diese Wende an ihren Widerspruechen zu

  8. Habitus – auch medialer Habitus – aus pädagogischer Perspektive

    Directory of Open Access Journals (Sweden)

    Norbert Meder

    2013-12-01

    Full Text Available Der Artikel stellt einen explizit bildungswissenschaftlichen Beitrag zu den Debatten über den "medialen Habitus" dar. Der Autor stellt dabei insbesondere die Frage nach dem "Wie" der "Inkorporierung" des Habitus in der frühkindlichen Phase des Menschen und erweitert dadurch allgemeiner gehaltene Diskussionen über die faktische und empirische Vorhandenheit des Habitus. Dabei betont der Artikel dass psychische Dispositionen und dauerhafte soziale Befindlichkeiten im Sinne eines Dispositivs konstitutiv für den Habitus sind und entwicklungspsychologisch fünf Phasen der Aneignung im Rahmen des kindlichen "Mitmachens" zu unterscheiden sind. So wird etwa der Umgang mit dem eigenen Leib und dem des anderen, mit der eigenen Haut und der Haut der anderen aus dem familiären Dispositiv in die eigene Disposition aufgenommen und konstituiert damit – aktiv und passiv – den Habitus. Der Beitrag betont nachdrücklich – und in Erweiterung und Intensivierung des Bourdieuschen Konzepts – die prozessuale Konstitution des (früh-kindlichen Habitus und beschreibt diese stufenartig und sehr fokussiert, um so das Konzept und die Diskussion zur Medialität des Habitus zu intensivieren und zu bereichern. Damit wird auch die Genese des Habitus im Sinne subtiler (Sozialisations-Bereiche herausgearbeitet, um genauer angeben zu können, wie sich im Rahmen der Familie und der Umwelt bestimmbare psychische und soziale Dispositionen konstituieren. The essay is an explicit contribution of educational science to the debates centred on “media habitus”. The author particularly questions “how” habitus is “incorporated” in the early childhood phase of human beings and thus broadens the more general discussion on the factual and empirical existence of habitus. He stresses the fact that psychological dispositions and enduring social existential orientations in the sense of a dispositif constitute the habitus and that in development psychology, we need to

  9. Integratives versus traditionelles Lernen aus Sicht der Studierenden [Integrative vs. Traditional Learning from the Student Perspective

    Directory of Open Access Journals (Sweden)

    Kadmon, Guni

    2011-05-01

    CuMed beinhaltet interaktive, fallbasierte Kleingruppenseminare, Fertigkeiten- und Kommunikationstraining, Problem-orientiertes Lernen, studentische Fallbearbeitungen und -präsentationen sowie Unterricht am Krankenbett. Die Dozenten werden didaktisch geschult. Das vorangegangene traditionelle Curriculum basierte dagegen auf Vorlesungen und lediglich zwei Wochenstunden praktischen Unterrichts am Krankenbett. Ziel: Die vorliegende Arbeit analysiert den Beitrag didaktischer Merkmale des traditionellen und Reformcurriculums sowie der aktiven Mitarbeit der Studierenden zum Lernerfolg aus Sicht der Studierenden. Methode: Differenzierte studentische Evaluationen der chirurgischen Lehrveranstaltungen zwischen 1999 and 2008 wurden mittels Korrelations- und Regressionsanalysen untersucht.Ergebnisse: Das Engagement der Dozenten, ihre Fähigkeit, Interesse zu wecken und Kompliziertes verständlich zu erklären, der Beitrag des Unterrichts zum Lernzuwachs, die Unterrichtsqualität und besonders die geförderte Mitarbeit wurden in HeiCuMed signifikant besser bewertet als im traditionellen Curriculum. Die Abhängigkeit des subjektiven Lernzuwachses von der didaktischen Qualität war hingegen in beiden Curricula gleich. Die geförderte studentische Mitarbeit erwies sich als wichtig für den subjektiven Lernzuwachs in den Seminaren und Praktika von HeiCuMed und für die evaluierte Qualität der Praktika aber nicht für den Lernzuwachs im traditionellen Curriculum. Schlussfolgerung: Die Ergebnisse stehen im Einklang mit psychologisch-pädagogischen Erkenntnissen, dass integrative Lehrmethoden mehr zum Lehr- und Lernerfolg beitragen als der passive Wissenstransfer durch die traditionelle Vorlesung, und belegen die wichtige Bedeutung der didaktischen Kompetenz für den Lehrerfolg.

  10. Biomass Demand-Resources Value Targeting

    International Nuclear Information System (INIS)

    Highlights: • Introduce DRVT supply chain modelling approach to consider underutilised biomass. • Advantages of the novel DRVT biomass supply chain approach. • A case study is presented to demonstrate the improvement of the system. - Abstract: With the global awareness towards sustainability, biomass industry becomes one of the main focuses in the search of alternative renewable resources for energy and downstream product. However, the efficiency of the biomass management, especially in supply chain is still questionable. Even though many researches and integrations of supply chain network have been conducted, less has considered underutilised biomass. This leads to the ignorance of potential value in particular biomass species. A new Demand-Resources Value Targeting (DRVT) approach is introduced in this study to investigate the value of each biomass available in order to fully utilise the biomass in respective applications. With systematic biomass value classification, integration of supply chain based on biomass value from biomass resources-to-downstream product can be developed. DRVT model allows better understanding of biomass and their potential downstream application. A simple demonstration of DRVT approach is conducted based on biomass resources in Malaysia

  11. Energy from biomass and waste

    NARCIS (Netherlands)

    Faaij, A.P.C.

    2001-01-01

    Biomass, a broad term for all organic matter of plants, trees and crops, is currently regarded as a renewable energy source which can contribute substantially to the world's energy supply in the future. Various scenarios for the development of energy supply and demand, such as compiled by the World

  12. Forestry and biomass energy projects

    DEFF Research Database (Denmark)

    Swisher, J.N.

    1994-01-01

    biomass energy development and forestry measures including reforestation and forest protection can contribute significantly to the reduction of global CO2 emissions, and that local land-use capacity must determine the type of project that is appropriate in specific cases. No single approach alone...... energy projects in a possible CO2 emission reduction regime....

  13. Soybean biomass produced in Argentina

    DEFF Research Database (Denmark)

    Semino, Stella; Paul, Helena; Tomei, Julia;

    are currently designing certification schemes for the sustainable production of biomass. This paper questions the validity of proposed environmental standards, using the production of Argentine soybean as a case study. The production of soybean production is associated with profound environmental impacts...

  14. Torrefied biomass-polypropylene composites

    Science.gov (United States)

    Torrefied almond shells and wood chips were incorporated into polypropylene as fillers to produce torrefied biomass-polymer composites. Response surface methodology was used to examine the effects of filler concentration, filler size, and lignin factor (relative lignin to cellulose concentration) on...

  15. Fiscalini Farms Biomass Energy Project

    Energy Technology Data Exchange (ETDEWEB)

    William Stringfellow; Mary Kay Camarillo; Jeremy Hanlon; Michael Jue; Chelsea Spier

    2011-09-30

    In this final report describes and documents research that was conducted by the Ecological Engineering Research Program (EERP) at the University of the Pacific (Stockton, CA) under subcontract to Fiscalini Farms LP for work under the Assistance Agreement DE-EE0001895 'Measurement and Evaluation of a Dairy Anaerobic Digestion/Power Generation System' from the United States Department of Energy, National Energy Technology Laboratory. Fiscalini Farms is operating a 710 kW biomass-energy power plant that uses bio-methane, generated from plant biomass, cheese whey, and cattle manure via mesophilic anaerobic digestion, to produce electricity using an internal combustion engine. The primary objectives of the project were to document baseline conditions for the anaerobic digester and the combined heat and power (CHP) system used for the dairy-based biomass-energy production. The baseline condition of the plant was evaluated in the context of regulatory and economic constraints. In this final report, the operation of the plant between start-up in 2009 and operation in 2010 are documented and an interpretation of the technical data is provided. An economic analysis of the biomass energy system was previously completed (Appendix A) and the results from that study are discussed briefly in this report. Results from the start-up and first year of operation indicate that mesophilic anaerobic digestion of agricultural biomass, combined with an internal combustion engine, is a reliable source of alternative electrical production. A major advantage of biomass energy facilities located on dairy farms appears to be their inherent stability and ability to produce a consistent, 24 hour supply of electricity. However, technical analysis indicated that the Fiscalini Farms system was operating below capacity and that economic sustainability would be improved by increasing loading of feedstocks to the digester. Additional operational modifications, such as increased utilization of

  16. Biomass energy systems program summary

    Energy Technology Data Exchange (ETDEWEB)

    None

    1980-07-01

    Research programs in biomass which were funded by the US DOE during fiscal year 1978 are listed in this program summary. The conversion technologies and their applications have been grouped into program elements according to the time frame in which they are expected to enter the commercial market. (DMC)

  17. Photoinduced Biohydrogen Production from Biomass

    Directory of Open Access Journals (Sweden)

    Yutaka Amao

    2008-07-01

    Full Text Available Photoinduced biohydrogen production systems, coupling saccharaides biomass such as sucrose, maltose, cellobiose, cellulose, or saccharides mixture hydrolysis by enzymes and glucose dehydrogenase (GDH, and hydrogen production with platinum colloid as a catalyst using the visible light-induced photosensitization of Mg chlorophyll-a (Mg Chl-a from higher green plant or artificial chlorophyll analog, zinc porphyrin, are introduced.

  18. Torrefaction of biomass. Final report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2013-05-15

    The objective of this project was to investigate and understand some of the basics of the process of torrefaction and explore the true characteristics of this new type of solid biomass fuel. Tests with torrefaction of different biomass have thus been conducted in both laboratory scale as well as bench scale investigating samples from milligram up to >100 kg. Test in TGA-FTIR and a lab scale pyro-ofen was used to understand the basic chemistry of the influence of torrefaction temperature on the kinetics of the process as well as the condensable gases leaving the process. The results reveal a process that above 250 deg. C is exothermic and that the major condensable gases consist mainly of methanol, acetic acid and water. Significant amounts of methyl-chloride were detected in the condensable gases and do thereby suggest that a certain amount of corrosive Cl could be reduced from the fuel by means of torrefaction. It was also concluded that great care has to be taken during and after production as the torrefied material was seen to self-ignite in an air environment at temperatures above 200 deg. C. The grindability of the material (energy consumption during milling) is indeed significantly improved by torrefaction and can be reduced up to 6 times compared to raw biomass. The results from test in bench scale as well as in lab scale mills suggested that in order to reach grindability similar to coal a torrefaction temperature above 240 deg. C is required for wood chips and above 290 deg. C for wood pellets. These figures will however differ with the type of biomass torrefied and the particle size of the material torrefied and milled. Moisture uptake in torrefied materials is decreased compared to raw biomass. However, due to formation of cavities in the material during torrefaction, the full effect is met first after densification. The hydrophobicity of the material increases with higher torrefaction temperature, but still a rather significant moisture uptake is

  19. Land of unlimited possibilities, disappointments inclusive. In Romania, energy from biomass is still not very important. Potential is existing; Land der grossen Moeglichkeiten, Enttaeuschungen inklusive. In Rumaenien spielt Energie aus Biomasse noch keine grosse Rolle. Potential gibt es

    Energy Technology Data Exchange (ETDEWEB)

    Thomsen, Astrid

    2013-02-01

    Renewable raw materials and bio energy in Romania? There are a lot of examples for successful projects, but these projects are not in the focus of the public interest. Regarding to the environmentally friendly energy supply the politics aspires to the abundantly available hydro-electric power as well as to wind power and solar energy.

  20. Comparative evaluation of power generation systems with integrated gasification of biomass; Vergleich von Systemen zur Stromerzeugung mit integrierter Biomassevergasung

    Energy Technology Data Exchange (ETDEWEB)

    Roesch, C. [Forschungszentrum Karlsruhe (Germany); Kaltschmitt, M. [Stuttgart Univ. (Germany)

    1998-09-01

    Gasification of biomass followed by power generation from the lean product gas can make a significant contribution to power generation without affecting the climate or environment. It is made even more interesting by the high efficiencies and promising pollution ratings that can be achieved. To make full use of this technology, some technical problems still require solving, and some non-technical obstacles need to be removed. (orig./SR) [Deutsch] Zusammenfassend kann festgehalten werden, dass die Biomassevergasung mit anschliessender Verstromung des Schwachgases einen nennenswerten Beitrag zu einer umwelt- und klimavertraeglicheren Energiebereitstellung in Europa leisten kann. Dies gilt insbesondere vor dem Hintergrund der erreichbaren hohen Stromwirkungsgrade und der vielversprechenden Umweltkenngroessen, durch die diese Technik gekennzeichnet ist. Um die Vorteile der Biomassevergasung realisieren zu koennen, muessen jedoch noch verschiedene technische Probleme geloest und nicht technische Hindernisse aus dem Weg geraeumt werden. (orig./SR)

  1. Treatment of biomass to obtain ethanol

    Science.gov (United States)

    Dunson, Jr., James B.; Elander, Richard T.; Tucker, III, Melvin P.; Hennessey, Susan Marie

    2011-08-16

    Ethanol was produced using biocatalysts that are able to ferment sugars derived from treated biomass. Sugars were obtained by pretreating biomass under conditions of high solids and low ammonia concentration, followed by saccharification.

  2. New market potential: Torrefaction of Woody Biomass

    Energy Technology Data Exchange (ETDEWEB)

    Jaya Shankar Tumuluru; J. Richard Hess

    2015-07-01

    According to researchers in Idaho National Laboratory’s Bioenergy Program, torrefaction of woody biomass could reduce variability in biomass feedstock and enable development of a commodity-type product for green energy generation and usage.

  3. Bioenergy from wastewater-based biomass

    Directory of Open Access Journals (Sweden)

    Ronald C. Sims

    2016-01-01

    Full Text Available The U.S. Department of Energy (DOE has stated that biomass is the only renewable resource that can supplant petroleum-based liquid transportation fuels in the near term. Wastewater is beginning to be viewed as a potential resource that can be exploited for biomass production and conversion to bioenergy. We suggest that using wastewater from municipalities and industries as a resource for cultivating biomass and combining wastewater treatment with the production of biomass for bioenergy would provide benefits to both industries. Two waste-based biomass production systems that currently have large nationwide infrastructures include: (1 wastewater treatment systems that can be used to cultivate algae biomass, and (2 land application/treatment systems for non-food terrestrial biomass. These existing infrastructures could be used in the relatively near future for waste-based biomass production and conversion to bioenergy, thereby reducing capital costs and scalability challenges while making a contribution to energy independence and national security.

  4. Health hazards from environmental asbestos and asbestos in rooms; Gesundheitsgefaehrdung durch Asbest aus der Umwelt und im Innenraum

    Energy Technology Data Exchange (ETDEWEB)

    Ohme, K. [Medizinal-, Lebensmittel- und Veterinaeruntersuchungsamt Thueringen, Hygiene-Inst. Erfurt (Germany); Huehn, W. [Medizinal-, Lebensmittel- und Veterinaeruntersuchungsamt Thueringen, Hygiene-Inst. Erfurt (Germany)

    1993-05-01

    Asbestos-comprising building and other materials are sources to a potential health hazard by means of asbestos fibres from environment and indoor, from which asbestos fibres may be released by atmospheric influences, aging processes, working or using. Inhalation of asbestos fibres is the deciding factor for the essentiell healthy consequences of asbestos. Only fibres of critical dimensions (length L > 5 {mu}m, diameter D < 3 {mu}m and proportion L:D > 3:1) have a pathogenic potential. Inhalated asbestos-comprising dust may lead to diseases on asbestosis of the lungs and/or pleura, lung cancer, mesothelioms of pleura or peritoneum principally. In result of the present concentrations of asbestos fibres in environment and indoor (from lower than 50 to 200 fibres/m{sup 3} respectively up to 20000 fibres/m{sup 3}) diseases on lung asbestosis are not to be expected. Diseases on lung cancer and mesothelioms are possible. Smoker have a tenfold higher risk to fall ill with asbestos caused lung cancer than non-smokers. In comparison with it, differences on mesothelioms were not observed. In all the asbestos-caused lifetime-risk is determined to 2 . 10{sup -5} at an immission load of 100 fibres/m{sup 3} (unit-risk). A rising of asbestos fibres pollution and, therefore, of health hazard seems not much probably. (orig.) [Deutsch] Ausgangspunkte fuer eine moegliche Gesundheitsgefaehrdung durch Asbestfasern aus der Umwelt und im Innenraum wind im wesentlichen asbesthaltige Bau- und Werkstoffe, aus denen durch atmosphaerische Einfluesse, Alterung, Bearbeitung oder Nutzung Asbestfasern freigesetzt werden koennen. Entscheidend fuer die wesentlichen gesundheitlichen Auswirkungen von Asbest ist die Aufnahme von Asbestfasern aus der Luft durch Einatmen. Ein krankheitsausloesendes Potential weisen nur Fasern kritischer Abmessungen (Laenge L > 5 {mu}m, Durchmesser D < 3 {mu}m und L:D > 3:1) auf. Eingeatmeter Asbestfaserstaub kann grundsaetzlich zu Erkrankungen an Asbestose der Lunge und

  5. Untersuchung Biomasse-bestimmender Prozesse in Pflanzen

    OpenAIRE

    Zajic, Doreen

    2011-01-01

    In der vorliegenden Arbeit wurde unter Anwendung verschiedener unabhängiger Strategien versucht, Hinweise auf Gene und Stoffwechselwege zu finden, die das Potential aufweisen, das Wachstum und die Entwicklung von Pflanzenorganen zu regulieren. Der erste Ansatz bestand aus dem Studium der Interaktion von Gerstenpflanzen mit dem mutualistischen Wurzelendophyten Piriformospora indica und dem biotrophen Blattpathogen Blumeria graminis f.sp. hordei (Bgh). Die Wurzelbesiedelung mit P. indica führt ...

  6. Bioenergy from wastewater-based biomass

    OpenAIRE

    Sims, Ronald C.; Sean K. Bedingfield; Reese Thompson; Sims, Judith L.

    2016-01-01

    The U.S. Department of Energy (DOE) has stated that biomass is the only renewable resource that can supplant petroleum-based liquid transportation fuels in the near term. Wastewater is beginning to be viewed as a potential resource that can be exploited for biomass production and conversion to bioenergy. We suggest that using wastewater from municipalities and industries as a resource for cultivating biomass and combining wastewater treatment with the production of biomass for bioenergy would...

  7. Biomass Power Is Hobbling under Seducement

    Institute of Scientific and Technical Information of China (English)

    Zhao Ran; Ye Qing

    2007-01-01

    @@ Biomass power, just like other renewable power, is facing the difficulty of high price. Since last year, the state has issued a series of incentive policies which has stimulated the flourishing development of biomass power. In April 2007, the admeasurement of biomass power tariff surcharges was initiated, which once again lent allure to biomass power. People, however, may hardly reveal the underneath problems facing so many seducements.

  8. Anaerobic digestion in sustainable biomass chains

    OpenAIRE

    Pabon Pereira, C.P.

    2009-01-01

    This thesis evaluates the potential contribution of anaerobic digestion (AD) to the sustainability of biomass chains. Results provide insights in the technological potential to recover energy and valuable by-products from energy crops and residues, and evaluate biomass cascades involving AD technology for their feasibility and desirability. Embedding AD in biomass chains addresses current constraints towards increased use of biomass for energy production considering land competition and envir...

  9. Spouting of biomass particles: a review.

    Science.gov (United States)

    Cui, Heping; Grace, John R

    2008-07-01

    Recent research on biomass multiphase flow in spouted beds is reviewed, beginning with fundamental work on hydrodynamic parameters, such as minimum spouting velocity, pressure drop and fountain height. We then consider experimental studies on biomass multiphase flow in such processes as pulp drying, liquid spouting of pulp fibres, drying and coating of agricultural biomass, and bioreactors. Finally, we summarize modelling efforts with respect to spouting of biomass particles. PMID:17570657

  10. Challenges for sustainable biomass utilisation. Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    Hiete, Michael; Ludwig, Jens; Bidart, Christian; Schultmann, Frank (eds.)

    2010-07-01

    The energetic use of biomass can provide solutions for the growing worldwide demand for energy and fuel. This book contains the contributions for the final workshop of the ''Biociclo'' research exchange between the Universidad de Concepcion and the Universitaet Karlsruhe. It reflects interdisciplinarity of the workshop's participants with contributed papers about Biomass Utilization Paths in Chile, Pyrolysis and Life-Cycle Assessment of Biomass and Logistic Concepts of Biomass Utilization Concepts. (orig.)

  11. Review and analysis of biomass gasification models

    DEFF Research Database (Denmark)

    Puig Arnavat, Maria; Bruno, Joan Carles; Coronas, Alberto

    2010-01-01

    The use of biomass as a source of energy has been further enhanced in recent years and special attention has been paid to biomass gasification. Due to the increasing interest in biomass gasification, several models have been proposed in order to explain and understand this complex process, and th...

  12. Process and apparatus for conversion of biomass

    NARCIS (Netherlands)

    Bakker, R.R.C.; Hazewinkel, J.H.O.; Groenestijn, van J.W.

    2006-01-01

    The invention is directed to a process for the conversion of cellulosic biomass, in particular lignocellulose-containing biomass into fermentable sugars. The invention is further directed to apparatus suitable for carrying out such processes. According to the invention biomass is converted into ferm

  13. Launching Plan B:Biomass Energy

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    China’s first biomass electricity company focuses on helping farmers as it strives to expand In April 2011,the world’s largest biomass power company,China National Bio Energy Co.Ltd.(NBE),began building a biomass power plant in Shangcai County of central China’s Henan Province.The new plant,due to reach

  14. Trading biomass or GHG emission credits?

    NARCIS (Netherlands)

    Laurijssen, J; Faaij, A.P.C.

    2009-01-01

    Global biomass potentials are considerable but unequally distributed over the world. Countries with Kyoto targets could import biomass to substitute for fossil fuels or invest in bio-energy projects in the country of biomass origin and buy the credits (Clean Development Mechanism (CDM) and Joint Imp

  15. Microwave moisture measurements of flowing biomass

    Science.gov (United States)

    Production of pelleted biomass is a significant emerging industry in the United States. A primary quality attribute of pelleted biomass is moisture content. This parameter is critical in pricing, binding, combustion, and storage of pelleted biomass. In order to produce pellets of a high quality mois...

  16. China - Biomass Cogeneration Development Project : Fuel Supply Handbook for Biomass-Fired Power Projects

    OpenAIRE

    World Bank

    2010-01-01

    This handbook provides an overview of the main topics that need consideration when managing the supply of biomass to large biomass power plants. It will help investors in China to develop, with assistance of local biomass supply experts, their own solutions. The focus is on biomass residues, in particular agricultural residues (mainly straw and stalks) and forestry residues (mainly residue...

  17. Heating load of buildings. Room heat from decentralized renewable electricity; Heizlast von Gebaeuden. Raumwaerme aus dezentral erneuerbarem Strom

    Energy Technology Data Exchange (ETDEWEB)

    Hartmann, Frank

    2013-10-15

    If one would like to get the heating load of a building by using peripheral generated electrical energy from photovoltaics or small wind power, one must deal with both the specific building, as well as the heating load, the heating temperature limit and the differentiation of specific heating period for the building. Here, a ground source heat pump with an intelligent energy storage system seems to be the first choice. [German] Moechte man mit dezentral erzeugter elektrischer Energie aus Photovoltaik oder Kleinst-Windkraft die Heizlast eines Gebaeudes besorgen, muss man sich sowohl mit dem spezifischen Gebaeude, als auch mit der Heizlast, der Heizgrenztemperatur und der Differenzierung der spezifischen Heizperiode fuer das Gebaeude auseinandersetzen. Dabei scheint eine erdgekoppelte Waermepumpe mit einem intelligenten Speichersystem die erste Wahl.

  18. 4. Meeting on cooling towers. From practice - for practice; 4. Kuehlturm-Tagung. Aus der Praxis - Fuer die Praxis

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-09-01

    The 4th Cooling Tower meeting brought into focus aspects of economic efficiency of the water cooling system, i.e. the papers analyse investment cost and operating cost taking into account environmental policy and interests. Numerous examples from practice are discussed in the papers showing how wet cooling tower design and application-specific selection of design features can influence the performance of the entire system. (orig./CB) [Deutsch] Im Mittelpunkt der 4. Kuehlturm-Tagung steht die Wirtschaftlichkeit der Wasserrueckkuehlanlage, d.h. die Betrachtung der Investitions- und Betriebskosten unter Beruecksichtigung der Belange des Umweltschutzes. Mit Beispielen aus der Praxis zeigen die Referenten, wie sich die Auslegung und Auswahl eines Nasskuehlturms auf das Betriebsergebnis der Anlage auswirken. (orig./GL)

  19. Design of Au/SPIO composite nanoparticle for facile and biocompatible surface functionalization via Au-S bond

    Energy Technology Data Exchange (ETDEWEB)

    Seino, Satoshi, E-mail: seino@mit.eng.osaka-u.ac.jp; Shibata, Yujin; Yamanaka, Masayuki; Nakagawa, Takashi [Osaka University, Graduate School of Engineering (Japan); Mukai, Yohei; Nakagawa, Shinsaku [Osaka University, Graduate School of Pharmaceutical Sciences and Center for Advanced Medical Engineering and Informatics (Japan); Yamamoto, Takao A. [Osaka University, Graduate School of Engineering (Japan)

    2013-01-15

    Immobilization of Au nanoparticles on super-paramagnetic iron-oxide (SPIO) enables facile and biocompatible surface functionalization via Au-S bond. Au/SPIO composite nanoparticle is easily modified by thiol-modified polyethylene glycol (PEG-SH), and they are successfully applied on MR tumor imaging. However, its large hydrodynamic size ({approx}150 nm) still causes the accumulation to liver in vivo. In this study, we controlled the hydrodynamic size of Au/SPIO by testing different raw SPIOs and stabilizing polymers. As the best candidate, Au/Molday-ION which was synthesized from Molday-ION and polyvinyl alcohol comprised the hydrodynamic size of 56 nm. Moreover, PEGylated Au/Molday-ION showed excellent dispersibility in blood serum, with the hydrodynamic size of 65 nm. This surface functionalization strategy is effective for the constructions of magnetic nanocarriers for in vivo applications.

  20. Power generation from wind power and hydroelectric power with cascade systems; Energieerzeugung aus Wind- und Wasserkraft durch Kaskadenschaltungen

    Energy Technology Data Exchange (ETDEWEB)

    Seifert, D.

    2001-07-01

    Cascades for speed control may be advantageous for motors with a small speed adjustment range. A cascade is a slip ring rotor asynchronous motor combined with a frequency converter on the rotor side. Depending on the converter design, they are classified as subsynchronous converter cascades or double-feeding asynchronous motors. The contribution discusses the function of these systems and shows how slip rings can be omitted. [German] Fuer Maschinen mit einem geringen Drehzahlstellbereich koennen Kaskaden zur Drehzahlstenerung vorteilhaft sein. Unter einer Kaskade versteht man heute die Kombination aus einer Schleifringlaeufer-Asynchronmaschine und einem laeuferseitigen Frequenzumrichter. Je nach Ausfuehrung des Umrichters bezeichnet man die Kaskaden als untersynchrone Stromrichterkaskade beziehungsweise als doppelt gespeiste Asynchronmaschine. Der Beitrag erklaert die grundsaetzliche Wirkungsweise dieser Kaskaden und zeigt Loesungen auf, die ohne die ueblichen Schleifringe auskommen. (orig.)

  1. Open Innovation neu denken und steuern: Ein Beitrag aus der Perspektive des Innovationsmanagements an der ETH-Bibliothek

    Directory of Open Access Journals (Sweden)

    Franziska Regner

    2015-11-01

    Full Text Available Der Artikel nennt und erläutert Grundlagen und exemplarische Felder, die sich aus Sicht des Innovationsmanagements an der ETH-Bibliothek anbieten, um Open Innovation zu implementieren und etablierte Methoden des Innovationsmanagements zu erweitern. The article outlines basic principles and exemplary fields concerning the implementation of Open Innovation in order to expand established methods in innovation management. The article is based on the perspective of innovation management at ETH-Bibliothek. Cet article esquisse les principes de base ainsi que des exemples de champs d’action permettant la mise en place d’une innovation ouverte (« open innovation ». La perspective se base sur la gestion de l’innovation à la bibliothèque de l’École polytechnique fédérale de Zurich (ETH.

  2. Biomass Business Opportunities Viet Nam

    Energy Technology Data Exchange (ETDEWEB)

    Zwebe, D. [SNV Netherlands Development Organisation, Ha Noi (Viet Nam)

    2012-03-15

    The goal of this survey is to provide a more specific and integral perspective in which niches, relevant policy development by the Vietnamese government, legislation and sustainability criteria are clearly addressed to benefit both the Dutch Private sector as well as to stimulate Dutch-Vietnamese cooperation and support the Vietnamese government in its search for tangible options to develop the desired enabling environment for a sustainable biomass/biofuel market. The following activities are defined to be executed to reach the goal of the project: Biomass availability in Vietnam (Chapter 2); Government of Vietnam and Energy (Chapter 3); The opportunities and barriers to enter the market in Vietnam (Chapter 4 and 5); Stakeholder analysis of the bio-energy sector (Chapter 6); and Recommendations (Chapter 7)

  3. Plant biomass briquetting : a review

    Energy Technology Data Exchange (ETDEWEB)

    Song, Y. [Saskatchewan Univ., Saskatoon, SK (Canada). Dept. of Agricultural and Bioresource Engineering; Shenyang Agricultural Univ., Shenyang (China). College of Engineering; Tumuluru, J.S.; Tabil, L.; Meda, V. [Saskatchewan Univ., Saskatoon, SK (Canada). Dept. of Agricultural and Bioresource Engineering

    2009-07-01

    The technology of converting straws into briquettes for biofuel or energy applications was discussed with particular reference to the factors that affect the quality of briquette, such as the loading pressure, particle size of the chopped material, the preheating temperature, the moisture content and residence time of the die. The study results of briquetting materials such as corn stover, switch grass, alfalfa, cotton stalks and reed canary grass were also presented. The main briquetting related technologies, systems and equipment were also reviewed. The study showed that in order to produce an economically competitive feedstock, further research should be extended to other biomass materials as well as developing technologies to obtain a high quality briquette with better efficiencies from a wide range of biomass materials.

  4. Proximate analysis for amazon biomass

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Antonio Geraldo de Paula; Feitosa Netto, Genesio Batista; Nogueira, Manoel Fernandes Martins; Coutinho, Manoel Fernandes Martins; Coutinho, Hebert Willian Martins; Rendeiro, Goncalo [Universidade Federal do Para (UFPA), Belem, PA (Brazil). Lab. de Engenharia Mecanica (LABGAS)], e-mail: ageraldo@ufpa.br, e-mail: mfmn@ufpa.br, e-mail: rendeiro@ufpa.br

    2006-07-01

    In order to asses the potentiality of Amazon biomass to generate power, either to supply electric energy to the grid or as fuel to plants supplying power for off-grid location, data for their proximate analysis must be available. A literature review on the subject indicated a lack of information and data concerning typical Amazon rain forest species. This work aimed to characterize (proximate analysis) 80 Amazon species in order to evaluate the energy resource from woody biomass wastes in Amazon region. Higher Heating Value, Carbon, Volatile and Ash contents were measured in a dry basis. The measurements were performed obeying the following Brazilian standards, NBR 6923, NBR 8112, NBR 8633, NBR 6922. (author)

  5. Methods for producing and using densified biomass products containing pretreated biomass fibers

    Energy Technology Data Exchange (ETDEWEB)

    Dale, Bruce E.; Ritchie, Bryan; Marshall, Derek

    2015-05-26

    A process is provided comprising subjecting a quantity of plant biomass fibers to a pretreatment to cause at least a portion of lignin contained within each fiber to move to an outer surface of said fiber, wherein a quantity of pretreated tacky plant biomass fibers is produced; and densifying the quantity of pretreated tacky plant biomass fibers to produce one or more densified biomass particulates, wherein said biomass fibers are densified without using added binder.

  6. Separation of ammonia from aqueous solutions by diffusion through membranes. Final report; Abtrennung von Ammoniak aus waessrigen Loesungen durch Membrandiffusion. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Weidlich, H.G.; Friedrich, G. [Ingenieurgesellschaft fuer Energie- und Kraftwerkstechnik mbH (IEK), Cottbus (Germany); Schwarzer, F. [SEP Gesellschaft fuer Technische Studien, Entwicklung, Planung mbH, Ismaning (Germany)

    2001-04-01

    The separation of ammonia from aqueous solutions by diffusion through membranes comprises the diffusion of gaseous ammonia through the pores of a non-wettable membrane into an acid, in which it is converted to non-volatile ammonium. For an effective separation of ammonia the pH-value and/or the temperature have to be increased to such a degree, that the ammonium, contained in the waste-water, is converted mainly to ammonia. Experimental plants were constructed on the basis of process parameters determined by laboratory tests, and tested for the treatment of liquid manure and of waste-water from power plants. The separation of ammonia from liquid manure was possible but couldn't be performed economically. On the other hand the treatment of waste-water from power plants seems to be promising also economically. In comparison with the stripping processes the membrane diffusion is characterized by a very low energy consumption and economical advantages specially at small capacities. (orig.) [German] Zur Abtrennung von Ammoniak aus waessrigen Loesungen durch Membrandiffusion diffundiert gasfoermiges Ammoniak durch die Poren einer nicht benetzbaren Membran in eine Saeure, in der es zu nicht fluechtigen Ammoniak umgesetzt wird. Zur wirkungsvollen Abtrennung von Ammoniak muessen pH-Wert und/oder die Temperatur soweit angehoben werden, dass das im Abwasser enthaltene Ammonium zum groessten Teil in Ammoniak umgewandelt wird. Nach Ermittlung geeigneter Verfahrensparameter in Laborversuchen wurden Versuchsanlagen zur Aufbereitung von Guelle und Abwaessern aus den Kraftwerksbereich erprobt. Die Ammoniakabtrennung aus Guelle erwies sich dabei zwar als moeglich, aber nicht als auf wirtschaftliche Weise durchfuehrbar. Die Aufbereitung von Kraftwerksabwaessern erscheint dagegen auch in wirtschaftlicher Hinsicht als interessant. Im Vergleich zu den Strippverfahren zeichnet sich die Membrandiffusion durch einen sehr geringen Energieeinsatz aus und weist in wirtschaftlicher

  7. Agricultural Residues and Biomass Energy Crops

    Energy Technology Data Exchange (ETDEWEB)

    None

    2016-06-01

    There are many opportunities to leverage agricultural resources on existing lands without interfering with production of food, feed, fiber, or forest products. In the recently developed advanced biomass feedstock commercialization vision, estimates of potentially available biomass supply from agriculture are built upon the U.S. Department of Agriculture’s (USDA’s) Long-Term Forecast, ensuring that existing product demands are met before biomass crops are planted. Dedicated biomass energy crops and agricultural crop residues are abundant, diverse, and widely distributed across the United States. These potential biomass supplies can play an important role in a national biofuels commercialization strategy.

  8. Biomass gasification for energy production

    Energy Technology Data Exchange (ETDEWEB)

    Lundberg, H.; Morris, M.; Rensfelt, E. [TPS Termiska Prosesser Ab, Nykoeping (Sweden)

    1997-12-31

    Biomass and waste are becoming increasingly interesting as fuels for efficient and environmentally sound power generation. Circulating fluidized bed (CFB) gasification for biomass and waste has been developed and applied to kilns both in the pulp and paper industry and the cement industry. A demonstration plant in Greve-in- Chianti, Italy includes two 15 MW{sub t}h RDF-fuelled CFB gasifiers of TPS design, the product gas from which is used in a cement kiln or in steam boiler for power generation. For CFB gasification of biomass and waste to reach a wider market, the product gas has to be cleaned effectively so that higher fuel to power efficiencies can be achieved by utilizing power cycles based on engines or gas turbines. TPS has developed both CFB gasification technology and effective secondary stage tar cracking technology. The integrated gasification - gas-cleaning technology is demonstrated today at pilot plant scale. To commercialise the technology, the TPS`s strategy is to first demonstrate the process for relatively clean fuels such as woody biomass and then extend the application to residues from waste recycling. Several demonstration projects are underway to commercialise TPS`s gasification and gas cleaning technology. In UK the ARBRE project developed by ARBRE Energy will construct a gasification plant at Eggborough, North Yorkshire, which will provide gas to a gas turbine and steam turbine generation system, producing 10 MW and exporting 8 Mw of electricity. It has been included in the 1993 tranche of the UK`s Non Fossil Fuel Obligation (NFFO) and has gained financial support from EC`s THERMIE programme as a targeted BIGCC project. (author)

  9. Binders for pellets from biomass

    OpenAIRE

    Bartoš, Pavel

    2013-01-01

    Pellets from biomass represent an appropriate form of biofuel for combustion. They are characterized by good fuel parameters, they enable efficient storage, transport and handling, and automatic fuel supply to the combustion chamber. Pellet production is quite a complicated and energy-consuming process. During the production it is necessary to ensure that the amount of input energy was the same or even smaller than the energy obtained. To streamline the production and improve thermo-mechanica...

  10. Hydrogen production processes from biomass

    OpenAIRE

    Shah, Sanjay

    2015-01-01

    Global warming, climate change and energy security have been gaining more attention worldwide. Hydrogen production from biomass offers an effective solution leaving minimal environmental footprint. This thesis identifies and reviews the most potential bio-hydrogen production pathways, identifies and designs the most promising process, and then conducts a rough feasibility study to check its economic potential for commercial production after simulation (experimental part). Finally, it also tes...

  11. Modeling of global biomass policies

    International Nuclear Information System (INIS)

    This paper discusses the BEAP model and its use for the analysis of biomass policies for CO2 emission reduction. The model considers competing land use, trade and leakage effects, and competing emission reduction strategies. Two policy scenarios are presented. In case of a 2040 time horizon the results suggest that a combination of afforestation and limited use of biomass for energy and materials constitutes the most attractive set of strategies. In case of a 'continued Kyoto' scenario including afforestation permit trade, the results suggest 5.1 Gt emission reduction based on land use change in 2020, two thirds of the total emission reduction by then. In case of global emission reduction, land use, land use change and forestry (LULUCF) accounts for one quarter of the emission reduction. However these results depend on the modeling time horizon. In case of a broader time horizon, maximized biomass production is more attractive than LULUCF. This result can be interpreted as a warning against a market based trading scheme for LULUCF credits. The model results suggest that the bioenergy market is dominated by transportation fuels and heating, and to a lesser extent feedstocks. Bioelectricity does not gain a significant market share in case competing CO2-free electricity options such as CO2 capture and sequestration and nuclear are considered. To some extent trade in agricultural food products such as beef and cereals will be affected by CO2 policies. (Author)

  12. Health effects of biomass exposure

    International Nuclear Information System (INIS)

    Biomass fuels such as coal, wood, crop residues, kerosene oil and dung-cakes meet the energy needs in the household sector in India and other developing countries. Crop residues and dung-cakes are largely used in rural areas, whereas wood forms the major source of fuel in urban as well as rural areas. Combustion of these fuels produces various kinds of poisonous gases such as CO, smoke, nitrogen dioxide, polycyclic aromatic hydrocarbons and respirable particulates. These gases are released in the domestic environment and they pollute the indoor air. The women and children are the one who suffer most from this air pollution. This results into a variety of health problems principally pertaining to respiratory system among the women and children. Studies on this aspect are reviewed. They point towards the positive relationship between biomass smoke and various health effects, particularly respiratory diseases. Need for research on the ways to prevent pollution due to biomass and resultant health hazards is emphasised. (M.G.B.). 25 refs., 2 tabs

  13. Modeling of global biomass policies

    Energy Technology Data Exchange (ETDEWEB)

    Gielen, D.; Fujino, Junichi; Hashimoto, Seiji; Moriguchi, Yuichi [National Inst. for Environmental Studies, Ibaraki (Japan)

    2003-08-01

    This paper discusses the BEAP model and its use for the analysis of biomass policies for CO{sub 2} emission reduction. The model considers competing land use, trade and leakage effects, and competing emission reduction strategies. Two policy scenarios are presented. In case of a 2040 time horizon the results suggest that a combination of afforestation and limited use of biomass for energy and materials constitutes the most attractive set of strategies. In case of a 'continued Kyoto' scenario including afforestation permit trade, the results suggest 5.1 Gt emission reduction based on land use change in 2020, two thirds of the total emission reduction by then. In case of global emission reduction, land use, land use change and forestry (LULUCF) accounts for one quarter of the emission reduction. However these results depend on the modeling time horizon. In case of a broader time horizon, maximized biomass production is more attractive than LULUCF. This result can be interpreted as a warning against a market based trading scheme for LULUCF credits. The model results suggest that the bioenergy market is dominated by transportation fuels and heating, and to a lesser extent feedstocks. Bioelectricity does not gain a significant market share in case competing CO{sub 2}-free electricity options such as CO{sub 2} capture and sequestration and nuclear are considered. To some extent trade in agricultural food products such as beef and cereals will be affected by CO{sub 2} policies. (Author)

  14. Engineered plant biomass feedstock particles

    Science.gov (United States)

    Dooley, James H.; Lanning, David N.; Broderick, Thomas F.

    2012-04-17

    A new class of plant biomass feedstock particles characterized by consistent piece size and shape uniformity, high skeletal surface area, and good flow properties. The particles of plant biomass material having fibers aligned in a grain are characterized by a length dimension (L) aligned substantially parallel to the grain and defining a substantially uniform distance along the grain, a width dimension (W) normal to L and aligned cross grain, and a height dimension (H) normal to W and L. In particular, the L.times.H dimensions define a pair of substantially parallel side surfaces characterized by substantially intact longitudinally arrayed fibers, the W.times.H dimensions define a pair of substantially parallel end surfaces characterized by crosscut fibers and end checking between fibers, and the L.times.W dimensions define a pair of substantially parallel top and bottom surfaces. The L.times.W surfaces of particles with L/H dimension ratios of 4:1 or less are further elaborated by surface checking between longitudinally arrayed fibers. The length dimension L is preferably aligned within 30.degree. parallel to the grain, and more preferably within 10.degree. parallel to the grain. The plant biomass material is preferably selected from among wood, agricultural crop residues, plantation grasses, hemp, bagasse, and bamboo.

  15. Economics of power generation from imported biomass

    International Nuclear Information System (INIS)

    Attention is paid to the economics of import of biomass to the Netherlands, and subsequent utilisation for power generation, as a means to reduce dependence on (imported) fossil fuels and to reduce CO2 emission. Import of wood to the extent of 40 PJ or more from Baltic and South American states seems to be readily achievable. Import of biomass has various advantages, not only for the European Union (reduced CO2 emissions) but also for the countries of origin (employment creation). However, possible disadvantages or risks should be taken into account. With that in mind, import of biomass from Baltic states seems very interesting, although it should be noted that in some of those countries the alternative of fuel-switching to biomass seems to be more cost-effective than import of biomass from those countries. Given the expected increase in inland biomass consumption in the Baltic countries and the potential substantial future demand for biomass in other Western European countries it is expected that the biomass supply from Baltic countries will not be sufficient to fulfill the demand. An early focus on import from other countries seems advisable. Several power generation options are available with short to medium term potential and long term potential. The margin between costs of biomass-fuelled power and of coal fired power will be smaller, due to substantial improvements in power generating efficiency and reductions of investment costs of options for power generation from biomass, notably Biomass Gasification Combined Cycle. 18 refs

  16. Biomass energy systems and the environment

    Science.gov (United States)

    Braunstein, H. M.; Kanciruk, P.; Roop, R. D.; Sharples, F. E.; Tatum, J. S.; Oakes, K. M.

    The technology, resources, applied, and experimental features of biomass energy resources are explored, with an emphasis on environmental and social implications of large-scale biomass development. The existing land and water based biomass resource is described in terms of available energy, ecological concerns, agricultural crops, livestock production, freshwater systems, and ocean systems. Attention is given to proposed systems of biomass energy production from forestry and silviculture, agricultural crops, livestock wastes, and freshwater and ocean systems. A survey is made of various biomass materials, techniques for conversion to gas, liquid fuels, or for direct combustion, and impacts of large-scale biomass production and harvest are examined. Particular note is made of the effects of scaling biomass conversion systems, including near- and long-term applications, and ethics and aesthetic concerns.

  17. PNEUMATIC CONVEYING OF BIOMASS PARTICLES: A REVIEW

    Institute of Scientific and Technical Information of China (English)

    Heping; Cui

    2006-01-01

    Processes involving biomass are of growing interest, but handling and conveying biomass particles are challenging due to the unusual physical properties of biomass particles. This paper reviews recent work on pneumatic conveying of biomass particles, especially agricultural particles and pulp fibres. Experimental work has been mainly carried out to determine a range of parameters, such as pressure drop, particle velocity, flow regime and electrostatic charging for both horizontal and vertical conveying. Models ranging from empirical to CFD models are also being developed. Difficulties in representing turbulence and interactions among biomass particles and between the particles and fluid have so far limited the success of advanced modeling. Further work is needed to improve understanding of multiphase biomass pneumatic conveying and to assist in the development of biomass energy and conversion processes.

  18. Lime pretreatment of lignocellulosic biomass

    Science.gov (United States)

    Chang, Shushien

    Lignocellulose is a valuable alternative energy source. The susceptibility of lignocellulosic biomass to enzymatic hydrolysis is constrained due to its structural features, so pretreatment is essential to enhance enzymatic digestibility. Of the chemicals used as pretreatment agents, it has been reported that alkalis improve biomass digestibility significantly. In comparison with other alkalis such as NaOH and ammonia, lime (calcium hydroxide) has many advantages; it is very inexpensive, is safe, and can be recovered by carbonating wash water. The effects of lime pretreatment were explored on switchgrass and poplar wood, representing herbaceous and woody biomass, respectively. The effects of pretreatment conditions (time, temperature, lime loading, water loading, particle size, and oxygen pressure) have been systematically studies. Lime alone enhances the digestibility of switchgrass significantly; under the recommended conditions, the 3-d total sugar (glucose + xylose) yields of lime-treated switchgrass were 7 times that of untreated sample. When treating poplar wood, lime must be combined with oxygen to achieve high digestibility; oxidative lime pretreatment increased the 3-d total sugar yield of poplar wood to 12 times that of untreated sample. In a fundamental study, to determine why lime pretreatment is effective, the effects of three structural features on enzymatic digestibility were studied: lignin content, acetyl content, and crystallinity index (CrI). Poplar wood was treated with peracetic acid, potassium hydroxide, and ball milling to produce model lignocelluloses with a broad spectrum of lignin contents, acetyl contents, and CrI, respectively. Enzymatic hydrolysis was performed on the model lignocelluloses to determine the digestibility. Correlations between lignin/carbohydrate ratio, acetyl/carbohydrate ratio, CrI and digestibility were developed. The 95% prediction intervals show that the correlations predict the 1-h and 3-d total sugar conversions of

  19. Manufacturing of a fuel tank of steel by hydroforming; Herstellung eines Kraftstofftanks komplexer Geometrie aus Stahl mit Hilfe der Hydroumformung

    Energy Technology Data Exchange (ETDEWEB)

    Friebe, E.; Langhammer, T.; Corsten, P. [Volkswagen AG, Wolfsburg (Germany); Kleiner, M.; Homberg, W.; Wellendorf, A. [Dortmund Univ. (Germany). Lehrstuhl fuer Umformtechnik; Birkert, A.; Troesken, F.; Carl, M. [Krupp Drauz GmbH, Heilbronn (Germany); Krautschick, J.; Papaiacovou, P. [Krupp Thyssen Nirosta GmbH, Bochum (Germany)

    2001-07-01

    It is indispensable that the release of fuel constituents must be completely avoided because of new requirements in environmental protection. This demand will apply also for fuel tanks and is so far satisfiable only with steel as the used material. Constructional and safety-relevant defaults in the building of passenger cars requires the positioning of fuel tanks to be put in very complex cavities of the car. The intention of the present research work was to acquire technical and economical solutions for the production of geometrically highly complicated hollow body that is made from steel with the help of the work-medium-based sheet-metal forming. For the investigations a tank of a New Beetle, PQ 34 of the Volkswagen AG was selected as an example of a modern compact car. So far this tank is made out of plastic. The material for this work is the austenitic, stainless steel 1.4301 that was also used in pilot tests (P 242 'Untersuchung der Herstellmoeglichkeiten eines modernen Kraftstofftanks aus Stahl mit Hilfe hydromechanischer und hydrostatischer Umformverfahren' order number P 242, ISBN 2-920621-78-9, Verlag und Vertriebsgesellschaft mbH, Duesseldorf). With Finite-Element-Simulation based fundamental research work the promising forming processes, adapted process control and special tool designing were investigated and selected. Finally the upper shell of the tank was manufactured by deep drawing of 0.6 mm thick sheet metal. The geometrically substantially more demanding lower shell could successfully be made by single-stage hydromechanical deep drawing of 0.8 mm thick sheet metal. The complete tank was manufactured by welding the two half shells together (WiG welding). These prototypes were submitted afterwards to the Volkswagens AG for intern component tests. It showed up that all necessary safety requirements can be fulfilled because of the material-specifically large remainder of formability. Without further optimization steps weight savings could be

  20. Biomass Energy Data Book: Edition 4

    Energy Technology Data Exchange (ETDEWEB)

    Boundy, Robert Gary [ORNL; Diegel, Susan W [ORNL; Wright, Lynn L [ORNL; Davis, Stacy Cagle [ORNL

    2011-12-01

    The Biomass Energy Data Book is a statistical compendium prepared and published by Oak Ridge National Laboratory (ORNL) under contract with the Biomass Program in the Energy Efficiency and Renewable Energy (EERE) program of the Department of Energy (DOE). Designed for use as a convenient reference, the book represents an assembly and display of statistics and information that characterize the biomass industry, from the production of biomass feedstocks to their end use, including discussions on sustainability. This is the fourth edition of the Biomass Energy Data Book which is only available online in electronic format. There are five main sections to this book. The first section is an introduction which provides an overview of biomass resources and consumption. Following the introduction to biomass, is a section on biofuels which covers ethanol, biodiesel and bio-oil. The biopower section focuses on the use of biomass for electrical power generation and heating. The fourth section is on the developing area of biorefineries, and the fifth section covers feedstocks that are produced and used in the biomass industry. The sources used represent the latest available data. There are also two appendices which include frequently needed conversion factors, a table of selected biomass feedstock characteristics, and discussions on sustainability. A glossary of terms and a list of acronyms are also included for the reader's convenience.

  1. Biomass Energy Data Book: Edition 3

    Energy Technology Data Exchange (ETDEWEB)

    Boundy, Robert Gary [ORNL; Davis, Stacy Cagle [ORNL

    2010-12-01

    The Biomass Energy Data Book is a statistical compendium prepared and published by Oak Ridge National Laboratory (ORNL) under contract with the Biomass Program in the Energy Efficiency and Renewable Energy (EERE) program of the Department of Energy (DOE). Designed for use as a convenient reference, the book represents an assembly and display of statistics and information that characterize the biomass industry, from the production of biomass feedstocks to their end use, including discussions on sustainability. This is the third edition of the Biomass Energy Data Book which is only available online in electronic format. There are five main sections to this book. The first section is an introduction which provides an overview of biomass resources and consumption. Following the introduction to biomass, is a section on biofuels which covers ethanol, biodiesel and bio-oil. The biopower section focuses on the use of biomass for electrical power generation and heating. The fourth section is on the developing area of biorefineries, and the fifth section covers feedstocks that are produced and used in the biomass industry. The sources used represent the latest available data. There are also four appendices which include frequently needed conversion factors, a table of selected biomass feedstock characteristics, and discussions on sustainability. A glossary of terms and a list of acronyms are also included for the reader's convenience.

  2. Biomass Energy Data Book: Edition 2

    Energy Technology Data Exchange (ETDEWEB)

    Wright, Lynn L [ORNL; Boundy, Robert Gary [ORNL; Badger, Philip C [ORNL; Perlack, Robert D [ORNL; Davis, Stacy Cagle [ORNL

    2009-12-01

    The Biomass Energy Data Book is a statistical compendium prepared and published by Oak Ridge National Laboratory (ORNL) under contract with the Biomass Program in the Energy Efficiency and Renewable Energy (EERE) program of the Department of Energy (DOE). Designed for use as a convenient reference, the book represents an assembly and display of statistics and information that characterize the biomass industry, from the production of biomass feedstocks to their end use, including discussions on sustainability. This is the second edition of the Biomass Energy Data Book which is only available online in electronic format. There are five main sections to this book. The first section is an introduction which provides an overview of biomass resources and consumption. Following the introduction to biomass, is a section on biofuels which covers ethanol, biodiesel and bio-oil. The biopower section focuses on the use of biomass for electrical power generation and heating. The fourth section is on the developing area of biorefineries, and the fifth section covers feedstocks that are produced and used in the biomass industry. The sources used represent the latest available data. There are also four appendices which include frequently needed conversion factors, a table of selected biomass feedstock characteristics, assumptions for selected tables and figures, and discussions on sustainability. A glossary of terms and a list of acronyms are also included for the reader's convenience.

  3. Biomass Energy Data Book: Edition 1

    Energy Technology Data Exchange (ETDEWEB)

    Wright, Lynn L [ORNL; Boundy, Robert Gary [ORNL; Perlack, Robert D [ORNL; Davis, Stacy Cagle [ORNL; Saulsbury, Bo [ORNL

    2006-09-01

    The Biomass Energy Data Book is a statistical compendium prepared and published by Oak Ridge National Laboratory (ORNL) under contract with the Office of the Biomass Program and the Office of Planning, Budget and Analysis in the Department of Energy's Energy Efficiency and Renewable Energy (EERE) program. Designed for use as a desk-top reference, the book represents an assembly and display of statistics and information that characterize the biomass industry, from the production of biomass feedstocks to their end use. This is the first edition of the Biomass Energy Data Book and is currently only available online in electronic format. There are five main sections to this book. The first section is an introduction which provides an overview of biomass resources and consumption. Following the introduction to biomass is a section on biofuels which covers ethanol, biodiesel and BioOil. The biopower section focuses on the use of biomass for electrical power generation and heating. The fourth section is about the developing area of biorefineries, and the fifth section covers feedstocks that are produced and used in the biomass industry. The sources used represent the latest available data. There are also three appendices which include measures of conversions, biomass characteristics and assumptions for selected tables and figures. A glossary of terms and a list of acronyms are also included for the reader's convenience.

  4. Biomass - Overview of Swiss Research Programme 2003; Biomasse

    Energy Technology Data Exchange (ETDEWEB)

    Binggeli, D.; Guggisberg, B.

    2003-07-01

    This overview for the Swiss Federal Office of Energy (SFOE) discusses the results obtained in 2003 in various research projects worked on in Switzerland on the subject of biomass. In the biomass combustion area, subjects discussed include system optimisation for automatic firing, combustion particles, low-particle pellet furnaces, design and optimisation of wood-fired storage ovens, efficiency of filtering techniques and methane generation from wood. Also, an accredited testing centre for wood furnaces is mentioned and measurements made on an installation are presented. As far as the fermentation of biogenic wastes is concerned, biogas production from dairy-product wastes is described. Other projects discussed include a study on eco-balances of energy products, certification and marketing of biogas, evaluation of membranes, a measurement campaign for solar sludge-drying, the operation of a percolator installation for the treatment of bio-wastes, the effects of compost on the environment and the fermentation of coffee wastes. Also, statistics on biogas production in 2002 is looked at. Finally, a preliminary study on biofuels is presented.

  5. Biomass proximate analysis using thermogravimetry.

    Science.gov (United States)

    García, Roberto; Pizarro, Consuelo; Lavín, Antonio G; Bueno, Julio L

    2013-07-01

    This work proposes a 25 min-last thermogravimetric method as a tool to determine biomass sample's proximate analysis data (moisture, ash, volatile matter and fixed carbon contents) just by direct measure of weight changes on each sample's TG chart. Compared with international standards commonly used to that aim, TG is a faster and easier to develop technique. Obtained results were satisfactory, with AEE under 6% for moisture and volatile matter, close to 10% for fixed carbon determination and AAD of 1.6 points for ash content.

  6. Leaching From Biomass Gasification Residues

    DEFF Research Database (Denmark)

    Allegrini, Elisa; Boldrin, Alessio; Polletini, A.;

    2011-01-01

    with geochemical modelling were carried out both on fresh and aged samples. The results showed that the material is comparable to residues from wood combustion and the leaching behaviour was dominated by Ca-containing minerals and solid solutions. Heavy metals were detected in very low concentrations in the bulk......The aim of the present work is to attain an overall characterization of solid residues from biomass gasification. Besides the determination of chemical and physical properties, the work was focused on the study of leaching behaviour. Compliance and pH-dependence leaching tests coupled...

  7. Thermophilic degradation of cellulosic biomass

    Science.gov (United States)

    Ng, T.; Zeikus, J. G.

    1982-12-01

    The conversion of cellulosic biomass to chemical feedstocks and fuel by microbial fermentation is an important objective of developing biotechnology. Direct fermentation of cellulosic derivatives to ethanol by thermophilic bacteria offers a promising approach to this goal. Fermentations at elevated temperatures lowers the energy demand for cooling and also facilitates the recovery of volatile products. In addition, thermophilic microorganisms possess enzymes with greater stability than those from mesophilic microorganisms. Three anaerobic thermophilic cocultures that ferment cellulosic substrate mainly to ethanol have been described: Clostridium thermocellum/Clostriidium thermohydrosulfuricum, C. thermocellum/Clostridium thermosaccharolyticum, and C. thermocellum/Thermoanaerobacter ethanolicus sp. nov. The growth characteristics and metabolic features of these cocultures are reviewed.

  8. Evaluiertes Training von Führungskompetenzen in der medizinischen Aus- und Weiterbildung [Training of Leadership Skills in Medical Education

    Directory of Open Access Journals (Sweden)

    Fischer, Martin R.

    2013-11-01

    Zusammenarbeit in Teams ist eine wichtige Voraussetzung für qualitativ hochwertige Versorgung im Gesundheitswesen. In diesem Zusammenhang spielen auch Führungskompetenzen von Ärztinnen und Ärzten im klinischen Alltag eine wichtige Rolle. Bisher wurde die Entwicklung von Führungskompetenzen in medizinischen Curricula in der Aus- und Weiterbildung von Ärztinnen und Ärzten jedoch kaum systematisch abgebildet. Die Entwicklung adäquater und effektiver Trainingsmethoden für die Vermittlung von Führungskompetenzen ist daher wünschenswert. Ziel: Das Review soll vorliegende Ergebnisse der Literatur zu Trainings von Führungskompetenzen in der Medizin zusammenfassen und integrieren, um zukünftige Forschung und Trainingsentwicklung anzuregen. Methode: Die Datenbanken PubMED, ERIC, PsycArticles, PsycINFO, PSYNDEX und dem Academic search complete durch EBSCOhost wurden auf Deutsch und Englisch nach Trainings von Führungskompetenzen in der Medizin durchsucht. Relevante Artikel wurden identifiziert und die Studienergebnisse hinsichtlich des zugrundeliegenden Führungsverständnisses, der Zielgruppe und Teilnehmeranzahl, der zeitlichen Ressourcen, sowie der Inhalte und Methoden des Trainings, des Evaluationsdesigns und der berichteten Trainingseffekte zusammengefasst. Ergebnisse: Auf acht Studien trafen alle Einschluss- und kein Ausschlusskriterium zu. Die Trainings selbst sowie die thematisierten Führungskompetenzen differenzieren jedoch stark voneinander. Die Trainingsdesigns beinhalten im Schwerpunkt die theoretische Auseinandersetzung mit dem Thema Führung sowie die Diskussion von Fallstudien aus der Praxis. Die Dauer der Trainings reicht von mehrstündigen bis hin zu mehrjährigen Veranstaltungen. Die selbst eingeschätzte Reaktion der Teilnehmer auf alle Trainings war positiv; es fand jedoch bisher keine systematische Überprüfung des Trainingserfolgs in Bezug auf konkrete Verhaltensänderungen der Teilnehmer statt.Schlussfolgerungen: Es bedarf weiterer Forschung, um die

  9. Biomass energy conversion: conventional and advanced technologies

    International Nuclear Information System (INIS)

    Increasing interest in biomass energy conversion in recent years has focused attention on enhancing the efficiency of technologies converting biomass fuels into heat and power, their capital and operating costs and their environmental emissions. Conventional combustion systems, such as fixed-bed or grate units and entrainment units, deliver lower efficiencies (<25%) than modem coal-fired combustors (30-35%). The gasification of biomass will improve energy conversion efficiency and yield products useful for heat and power generation and chemical synthesis. Advanced biomass gasification technologies using pressurized fluidized-bed systems, including those incorporating hot-gas clean-up for feeding gas turbines or fuel cells, are being demonstrated. However, many biomass gasification processes are derivatives of coal gasification technologies and do not exploit the unique properties of biomass. This paper examines some existing and upcoming technologies for converting biomass into electric power or heat. Small-scale 1-30 MWe units are emphasized, but brief reference is made to larger and smaller systems, including those that bum coal-biomass mixtures and gasifiers that feed pilot-fuelled diesel engines. Promising advanced systems, such as a biomass integrated gasifier/gas turbine (BIG/GT) with combined-cycle operation and a biomass gasifier coupled to a fuel cell, giving cycle efficiencies approaching 50% are also described. These advanced gasifiers, typically fluid-bed designs, may be pressurized and can use a wide variety of biomass materials to generate electricity, process steam and chemical products such as methanol. Low-cost, disposable catalysts are becoming available for hot-gas clean-up (enhanced gas composition) for turbine and fuel cell systems. The advantages, limitations and relative costs of various biomass gasifier systems are briefly discussed. The paper identifies the best known biomass power projects and includes some information on proposed and

  10. Ausência de veia cava inferior: relato de caso Absence of the inferior vena cava: case report

    Directory of Open Access Journals (Sweden)

    Elton Correia Alves

    2010-12-01

    Full Text Available A ausência congênita de veia cava inferior é achado incomum e ocasional durante exames complementares ou cirurgias do abdome. Em razão de a maioria dos pacientes sem outras malformações serem assintomáticos, há dificuldade em estimar a prevalência dessas anomalias. O objetivo deste trabalho foi relatar o caso de um paciente de 28 anos, sexo masculino, referido para radiografia de tórax devido a quadro de febre alta (39ºC não-responsiva à medicação. Radiografia de tórax sugeriu dilatação de veia ázigos. Em inquérito dirigido para sintomas cardiovasculares, referiu dor torácica (durante atividade física e em repouso e dispneia ocasionais durante o sono associada ao período em que intensificou a prática de exercícios. Realizada tomografia computadorizada sem contraste e, posteriormente, contrastada. As mesmas não esclareceram o caso, fazendo-se necessário angiotomografia, a qual evidenciou ausência de veia cava inferior torácica.The congenital absence of the inferior vena cava is a rare and occasional finding at complementary exams or abdominal surgeries. As the majority of patients without other malformations are asymptomatic, it is hard to estimate the prevalence of these anomalies. Our goal was to report a case of a 28-year-old patient, male, referred to thorax X-ray due to high fever state (39ºC, nonresponder to medication. The X-ray suggested azygos vein dilatation. The interview about cardiovascular symptoms revealed thoracic pain during both physical exercises and at rest, and occasional dyspnea during sleep related to the period of intensification of physical exercises. Computadorized tomography with and without contrast did not solve the case, what explain the request of an angiotomography, that showed absence of thoracic inferior vena cava.

  11. Reports from the Bavarian State Agency for Environmental Protection (6). Technical reports. Information from LfU; Berichte aus dem Bayerischen Landesamt fuer Umweltschutz (6). Fachbeitraege. Informationen aus dem LfU

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-31

    In 1993 again, the Bavarian State Agency for Environmental protection had a broad range of tasks to fulfill. They form the subject of the 29 contributions. Described is not only the monitoring of radioactive and non-radioactive environmental pollutants but also the extension of the nuisance measuring grid. The cooperation with Russia in the southern Ural regarding the in-vivo determination of strontium 90 and caesium 137 in exposed persons is dealt with. The section `reports from LfU` covers also projects in the areas of nature conservation and care of the landscape. (DG) [Deutsch] Das bayerische LfU hatte auch im Jahr 1993 umfangreiche Aufgaben zu erfuellen. Die 29 Berichte geben hierueber einen Ueberblick, wobei neben der Erfahrung radioaktiver und nichtradioaktiver Umweltschadstoffe auch der Ausbau des Immissionsmessnetzes beschrieben wird. Auf die Zusammenarbeit mit Russland im Suedural in Bezug der In-vivo-Bestimmung von Strontium 90 und Caesium 137 an exponierten Personen wird eingegangen. Die Mitteilungen aus dem LfU umfassen auch Projekte auf dem Gebiet des Naturschutzes und der Landschaftspflege. (DG)

  12. Biomass Compositional Analysis Laboratory (Fact Sheet)

    Energy Technology Data Exchange (ETDEWEB)

    2014-07-01

    At the Biomass Compositional Analysis Laboratory, NREL scientists have more than 20 years of experience supporting the biomass conversion industry. They develop, refine, and validate analytical methods to determine the chemical composition of biomass samples before, during, and after conversion processing. These high-quality compositional analysis data are used to determine feedstock compositions as well as mass balances and product yields from conversion processes.

  13. deNOx catalysts for biomass combustion

    OpenAIRE

    Kristensen, Steffen Buus; Riisager, Anders; Fehrmann, Rasmus; Nørklit Jensen, Jørgen

    2013-01-01

    The present thesis revolves around the challenges involved in removal of nitrogen oxides in biomass fired power plants. Nitrogen oxides are unwanted byproducts formed to some extent during almost any combustion. In coal fired plants these byproducts are removed by selective catalytic reduction, however the alkali in biomass complicate matters. Alkali in biomass severely deactivates the catalyst used for the selective catalytic reduction in matter of weeks,hence a more alkali resistant catalys...

  14. 3rd annual biomass energy systems conference

    Energy Technology Data Exchange (ETDEWEB)

    1979-10-01

    The main objectives of the 3rd Annual Biomass Energy Systems Conference were (1) to review the latest research findings in the clean fuels from biomass field, (2) to summarize the present engineering and economic status of Biomass Energy Systems, (3) to encourage interaction and information exchange among people working or interested in the field, and (4) to identify and discuss existing problems relating to ongoing research and explore opportunities for future research. Abstracts for each paper presented were edited separately. (DC)

  15. Estimates of US biomass energy consumption 1992

    International Nuclear Information System (INIS)

    This report is the seventh in a series of publications developed by the Energy Information Administration (EIA) to quantify the biomass-derived primary energy used by the US economy. It presents estimates of 1991 and 1992 consumption. The objective of this report is to provide updated estimates of biomass energy consumption for use by Congress, Federal and State agencies, biomass producers and end-use sectors, and the public at large

  16. Feasibility of bioethanol production from microalgal biomass

    OpenAIRE

    Anjos, Mariana; A.A. Vicente; Teixeira, J. A.; Dragone, Giuliano

    2014-01-01

    The potential use of microalgal biomass as a feedstock for bioethanol production has attracted great attention in recent years. Bioethanol from microalgae can be produced through two distinct pathways: direct dark fermentation or fermentation of saccharified biomass by yeast. The main objective of this work was to assess the influence of increasing glucose concentration derived from hydrolysed microalgal biomass on bioethanol production. The green microalga C. vulgaris (strain P12) was cultiv...

  17. Estimates of US biomass energy consumption 1992

    Energy Technology Data Exchange (ETDEWEB)

    1994-05-06

    This report is the seventh in a series of publications developed by the Energy Information Administration (EIA) to quantify the biomass-derived primary energy used by the US economy. It presents estimates of 1991 and 1992 consumption. The objective of this report is to provide updated estimates of biomass energy consumption for use by Congress, Federal and State agencies, biomass producers and end-use sectors, and the public at large.

  18. Engineered plant biomass feedstock particles

    Science.gov (United States)

    Dooley, James H.; Lanning, David N.; Broderick, Thomas F.

    2011-10-11

    A novel class of flowable biomass feedstock particles with unusually large surface areas that can be manufactured in remarkably uniform sizes using low-energy comminution techniques. The feedstock particles are roughly parallelepiped in shape and characterized by a length dimension (L) aligned substantially with the grain direction and defining a substantially uniform distance along the grain, a width dimension (W) normal to L and aligned cross grain, and a height dimension (H) normal to W and L. The particles exhibit a disrupted grain structure with prominent end and surface checks that greatly enhances their skeletal surface area as compared to their envelope surface area. The L.times.H dimensions define a pair of substantially parallel side surfaces characterized by substantially intact longitudinally arrayed fibers. The W.times.H dimensions define a pair of substantially parallel end surfaces characterized by crosscut fibers and end checking between fibers. The L.times.W dimensions define a pair of substantially parallel top surfaces characterized by some surface checking between longitudinally arrayed fibers. The feedstock particles are manufactured from a variety of plant biomass materials including wood, crop residues, plantation grasses, hemp, bagasse, and bamboo.

  19. Bamboo: An Overlooked Biomass Resource?

    Energy Technology Data Exchange (ETDEWEB)

    Scurlock, J.M.O.

    2000-02-01

    Bamboo is the common term applied to a broad group (1250 species) of large woody grasses, ranging from 10 cm to 40 m in height. Already in everyday use by about 2.5 billion people, mostly for fiber and food within Asia, bamboo may have potential as a bioenergy or fiber crop for niche markets, although some reports of its high productivity seem to be exaggerated. Literature on bamboo productivity is scarce, with most reports coming from various parts of Asia. There is little evidence overall that bamboo is significantly more productive than many other candidate bioenergy crops, but it shares a number of desirable fuel characteristics with certain other bioenergy feedstocks, such as low ash content and alkali index. Its heating value is lower than many woody biomass feedstocks but higher than most agricultural residues, grasses and straws. Although non-fuel applications of bamboo biomass may be actually more profitable than energy recovery, there may also be potential for co-productio n of bioenergy together with other bamboo processing. A significant drawback is the difficulty of selective breeding, given the lack of knowledge of flowering physiology. Further research is also required on propagation techniques, establishment and stand management, and mechanized harvesting needs to be developed.

  20. Lignocellulosic biomass pretreatment using AFEX.

    Science.gov (United States)

    Balan, Venkatesh; Bals, Bryan; Chundawat, Shishir P S; Marshall, Derek; Dale, Bruce E

    2009-01-01

    Although cellulose is the most abundant organic molecule, its susceptibility to hydrolysis is restricted due to the rigid lignin and hemicellulose protection surrounding the cellulose micro fibrils. Therefore, an effective pretreatment is necessary to liberate the cellulose from the lignin-hemicellulose seal and also reduce cellulosic crystallinity. Some of the available pretreatment techniques include acid hydrolysis, steam explosion, ammonia fiber expansion (AFEX), alkaline wet oxidation, and hot water pretreatment. Besides reducing lignocellulosic recalcitrance, an ideal pretreatment must also minimize formation of degradation products that inhibit subsequent hydrolysis and fermentation. AFEX is an important pretreatment technology that utilizes both physical (high temperature and pressure) and chemical (ammonia) processes to achieve effective pretreatment. Besides increasing the surface accessibility for hydrolysis, AFEX promotes cellulose decrystallization and partial hemicellulose depolymerization and reduces the lignin recalcitrance in the treated biomass. Theoretical glucose yield upon optimal enzymatic hydrolysis on AFEX-treated corn stover is approximately 98%. Furthermore, AFEX offers several unique advantages over other pretreatments, which include near complete recovery of the pretreatment chemical (ammonia), nutrient addition for microbial growth through the remaining ammonia on pretreated biomass, and not requiring a washing step during the process which facilitates high solid loading hydrolysis. This chapter provides a detailed practical procedure to perform AFEX, design the reactor, determine the mass balances, and conduct the process safely.

  1. Energy Production from Marine Biomass (Ulva lactuca)

    DEFF Research Database (Denmark)

    Nikolaisen, Lars; Daugbjerg Jensen, Peter; Svane Bech, Karin;

    The background for this research activity is that the 2020 goals for reduction of the CO2 emissions to the atmosphere are so challenging that exorbitant amounts of biomass and other renewable sources of energy must be mobilised in order to – maybe – fulfil the ambitious 2020 goals. The macroalgae...... is an unexploited, not researched, not developed source of biomass and is at the same time an enormous resource by mass. It is therefore obvious to look into this vast biomass resource and by this report give some of the first suggestions of how this new and promising biomass resource can be exploited....

  2. Combustion, pyrolysis, gasification, and liquefaction of biomass

    Energy Technology Data Exchange (ETDEWEB)

    Reed, T.B.

    1980-09-01

    All the products now obtained from oil can be provided by thermal conversion of the solid fuels biomass and coal. As a feedstock, biomass has many advantages over coal and has the potential to supply up to 20% of US energy by the year 2000 and significant amounts of energy for other countries. However, it is imperative that in producing biomass for energy we practice careful land use. Combustion is the simplest method of producing heat from biomass, using either the traditional fixed-bed combustion on a grate or the fluidized-bed and suspended combustion techniques now being developed. Pyrolysis of biomass is a particularly attractive process if all three products - gas, wood tars, and charcoal - can be used. Gasification of biomass with air is perhaps the most flexible and best-developed process for conversion of biomass to fuel today, yielding a low energy gas that can be burned in existing gas/oil boilers or in engines. Oxygen gasification yields a gas with higher energy content that can be used in pipelines or to fire turbines. In addition, this gas can be used for producing methanol, ammonia, or gasoline by indirect liquefaction. Fast pyrolysis of biomass produces a gas rich in ethylene that can be used to make alcohols or gasoline. Finally, treatment of biomass with high pressure hydrogen can yield liquid fuels through direct liquefaction.

  3. EERC Center for Biomass Utilization 2006

    Energy Technology Data Exchange (ETDEWEB)

    Zygarlicke, Christopher J. [Univ. of North Dakota, Grand Forks, ND (United States). Energy and Environmental Research Center; Hurley, John P. [Univ. of North Dakota, Grand Forks, ND (United States). Energy and Environmental Research Center; Aulich, Ted R. [Univ. of North Dakota, Grand Forks, ND (United States). Energy and Environmental Research Center; Folkedahl, Bruce C. [Univ. of North Dakota, Grand Forks, ND (United States). Energy and Environmental Research Center; Strege, Joshua R. [Univ. of North Dakota, Grand Forks, ND (United States). Energy and Environmental Research Center; Patel, Nikhil [Univ. of North Dakota, Grand Forks, ND (United States). Energy and Environmental Research Center; Shockey, Richard E. [Univ. of North Dakota, Grand Forks, ND (United States). Energy and Environmental Research Center

    2009-05-27

    The Center for Biomass Utilization® 2006 project at the Energy & Environmental Research Center (EERC) consisted of three tasks related to applied fundamental research focused on converting biomass feedstocks to energy, liquid transportation fuels, and chemicals. Task 1, entitled Thermochemical Conversion of Biomass to Syngas and Chemical Feedstocks, involved three activities. Task 2, entitled Crop Oil Biorefinery Process Development, involved four activities. Task 3, entitled Management, Education, and Outreach, focused on overall project management and providing educational outreach related to biomass technologies through workshops and conferences.

  4. Monitoring `Renewable resources`. Vegetable oils and other fuels from plants. Third status report; Monitoring `Nachwachsende Rohstoffe`. Pflanzliche Oele und andere Kraftstoffe aus Pflanzen. Dritter Sachstandsbericht

    Energy Technology Data Exchange (ETDEWEB)

    Roesch, C.

    1997-11-01

    The present status report `vegetable oils and other fuels from plants` deals with important developments on the utilization of biofuels in spark ignition engines and diesel engines since presentation of the report `growing raw materials` of the Enquete comission `Technikfolgenabschaetzung und -bewertung`. The report deals mainly with rapeseed oil and rape seed oil fatty acid methyl ester produced from this (mentioned short of biodiesel) as well as with bioethanol made from sugar beet and grain. (orig./SR) [Deutsch] Der vorliegende Sachstandsbericht `Pflanzliche Oele und andere Kraftstoffe aus Pflanzen` beschaeftigt sich mit den wichtigsten Entwicklungen beim Einsatz von Biokraftstoffen in Otto- und Dieselmotoren seit Vorlage des Berichts `Nachwachsende Rohstoffe` der Enquete-Kommission `Technikfolgenabschaetzung und -bewertung`. Der Bericht befasst sich schwerpunktmaessig mit Rapsoel und daraus hergestelltem Rapsoelfettsaeuremethylester (kurz Biodiesel genannt) sowie mit aus Zuckerrueben und Getreide erzeugtem Bioethanol. (orig./SR)

  5. The role of ABC proteins Aus1p and Pdr11p in the uptake of external sterols in yeast: dehydroergosterol fluorescence study

    DEFF Research Database (Denmark)

    Kohut, Peter; Wüstner, Daniel; Hronska, L;

    2011-01-01

    Uptake of external sterols in the yeast Saccharomyces cerevisiae is a multistep process limited to anaerobiosis or heme deficiency. It includes crossing the cell wall, insertion of sterol molecules into plasma membrane and their internalization and integration into intracellular membranes. We...... applied the fluorescent ergosterol analog dehydroergosterol (DHE) to monitor the initial steps of sterol uptake by three independent approaches: fluorescence spectroscopy, fluorescence microscopy and sterol quantification by HPLC. Using specific fluorescence characteristics of DHE we showed that the entry...... of sterol molecules into plasma membrane is not spontaneous but requires assistance of two ABC (ATP-binding cassette) pumps--Aus1p or Pdr11p. DHE taken up by uptake-competent hem1ΔAUS1PDR11 cells could be directly visualized by UV-sensitive wide field fluorescence microscopy. HPLC analysis of sterols...

  6. Sieglind Luise Ellger-Rüttgardt / Grit Wachtel (Hrsg.): Pädagogische Professionalität und Behinderung. Herausforderungen aus historischer, nationaler und internationaler Perspektive, Stuttgart: Kohlhammer 2010 [Rezension

    OpenAIRE

    Weisser, Jan

    2011-01-01

    Rezension von: Sieglind Luise Ellger-Rüttgardt / Grit Wachtel (Hrsg.), Pädagogische Professionalität und Behinderung. Herausforderungen aus historischer, nationaler und internationaler Perspektive, Stuttgart: Kohlhammer 2010, 233 S.

  7. Determination of the thermal conductivity of sediment rock from measurements on cuttings; Ermittlung der Gesteinswaermeleitfaehigkeit von Sedimentgesteinen aus Messungen am Bohrklein

    Energy Technology Data Exchange (ETDEWEB)

    Troschke, B.; Burkhardt, H. [Technische Univ. Berlin (Germany). Fachgebiet Angewandte Goephysik

    1997-12-01

    Due to high costs core recovery in many wells is strongly restricted. To determine thermal conductivity in these cases measurements on cuttings are necessary, since in situ measurements are expensive and protracted, too. Therefore cores from three hydrogeothermal wells of the north-east part of the German sedimentary basin were grinded to compare the results of measurements on cuttings with known values of thermal conductivity from the original cores. By a suitable model of the two-phase-system cuttings-water it is possible to calculate the thermal conductivity of the rock-matrix. On the basis of this value and a suitable rock-model an average thermal conductivity for the water saturated rock can be estimated. Certainly all influences of the texture (anisotropy, grain bond) and of the characteristics of the porespace (porosity, internal surface, saturation, permeability) are lost with measurements on cuttings. Therefore for the different systems cuttings-water and rock-porefluid as well as for different rock types different models are necessary. (orig.) [Deutsch] In vielen Bohrungen werden aus Kostengruenden keine Kerne gezogen. Fuer die Ermittlung der Waermeleitfaehigkeit koennen deshalb nur in-situ-Messungen, die ebenfalls zeit- und kostenintensiv sind, oder Messungen am Bohrklein herangezogen werden. Es wurden daher Kerne aus drei Hydrogeothermalbohrungen des nordostdeutschen Beckens aufgemahlen, um so vergleichende Messungen am `Bohrklein` aus Kernen mit bekannter Waermeleitfaehigkeit durzhzufuehren. Durch eine geeignete Modellvorstellung des Zwei-Phasen-Systems Bohrklein/Wasser laesst sich die Waermeleitfaehigkeit der Gesteinsmatrix bestimmen und aus dieser durch ein Gesteinsmodell auch eine mittlere Waermeleitfaehigkeit des wassergesaettigten Festgesteins berechnen. Klar ist, dass bei Messungen am Bohrklein Einfluesse, die durch Gefuege (Anisotropie, Kornbindung) und Porenraumeigenschaften (Porositaet, Saettigung, Permeabilitaet) hervorgerufen werden

  8. Kompetenz verleiht Flügel. Ursprung und theoretische Grundlagen der Kompetenzorientierung. Ausgewählte Kapitel aus dem Buch: Der Siegeszug der Kompetenzen

    OpenAIRE

    Zaiser, Richard

    2016-01-01

    „Woher stammt die Kompetenzorientierung und Standardisierung?“ In diesem Text werden 18 ausgewählte Kapitel aus dem Buch (Der Siegeszug der Kompetenzen) angeboten. Das Bemühen um wissenschaftliche Genauigkeit, der Einbezug der persönlichen Erfahrung und Betroffenheit des Autors und der Versuch, ein komplexes und heikles Thema klar und verständlich darzustellen, sind drei besondere Aspekte, die den Text kennzeichnen. [...] Die Frage nach dem Ursprung (die im vorliegenden Text behandelt wird) w...

  9. Zur Karbonatsedimentologie, Biofazies und sequenzstratigraphischen Architektur eines fossilen Hochenergie-Schelfs aus dem Neogen der Algarve (Miozän, Südportugal)

    OpenAIRE

    Forst, Markus H.

    2003-01-01

    Die neogene Lagos-Portimão Formation (Unter- bis Mittelmiozän) bildet einen Teil der Steilküste der Algarve (S-Portugal) und besteht aus einer zyklischen Wechsellagerung von Karbonaten und Sand-steinen. Die vorliegende Arbeit bietet ein Modell zur sedimentologischen, faziellen und stratigraphischen Entwicklung dieser Einheit an. Basierend auf Profilen entlang der gesamten lateralen Erstreckung der Einheit wurden verschiedene Gelände- und Labormethoden angewandt, um ein Modell entwickeln zu kö...

  10. Qualitäts- und Herkunftszeichen als Instrument des Agrarmarketings: Eine Bewertung am Beispiel der "Geprüften Qualität - HESSEN" aus Produzentensicht

    OpenAIRE

    Will, Sabine

    2013-01-01

    Die „Geprüfte Qualität – HESSEN“ (GQH) ist ein stufenübergreifendes Zertifizierungszeichen für Lebensmittel mit einem Herkunftsbezug. Der Beitrag bewertet die GQH aus Produzentensicht. Es wird untersucht, ob ein Beitrag zur Einkommenssicherung in der Agrar- und Ernährungswirtschaft durch das Zeichensystem entsprechend seiner Zielstellung geleistet wird. Auf Basis der in einer Produzentenbefragung erhobenen Kosten- und Nutzeneffekte wird abgeleitet, dass im Durchschnitt der Fleischerzeuger der...

  11. Molekulare Analyse der Biosynthese octadecanoid-abgeleiteter Signalmoleküle durch Allenoxid-Synthase und Allenoxid- Cyclase aus Arabidopsis thaliana (L.) HEYNH.

    OpenAIRE

    Zerbe, Philipp

    2007-01-01

    Im Fokus dieser Dissertation stand die Untersuchung der Biosynthese des Phytohormons 12-oxo-Phytodiensäure durch die Allenoxid-Synthase (AOS) und die vier Allenoxid-Cyclase-Isoformen (AOC) aus Arabidopsis thaliana. Enzymatische Analysen der rekombinanten Proteine zeigten eine redundante Substratspezifität der AOC-Isoformen. Zudem belegen biochemische Interaktionsstudien, dass eine Komplexierung von AOS und AOC in vitro nicht essentiell ist. Gleichwohl lässt die erhöhte Stereoselek...

  12. Herstellung und Charakterisierung von Proteinprodukten aus Palerbsen und deren Potential zur Bildung von Proteinmatrices mit hohen Lipidanteilen in Futtermitteln für Salmoniden

    OpenAIRE

    Wild, Florian

    2012-01-01

    Die Steigerung des Austausches von Fischmehl durch alternative Proteinrohstoffe in Fischfuttermitteln ist eine Grundvoraussetzung für ein weiteres Wachstum der Aquakulturwirtschaft, in der die Zucht von Lachs der bedeutendste Produktionszweig ist. Aufgrund der karnivoren Ernährungsweise von Lachs ist dessen Verdauungssystem an die Aufnahme von sehr protein- und fettreicher Nahrung aus seiner natürlichen Umgebung angepasst. Fischfuttermittel für Lachse müssen daher zu möglichst hohen Anteilen ...

  13. Untersuchungen mit Bodenpilzen aus der Rebstock-Rhizosphäre unterschiedlich bewirtschafteter Rebanlagen des Rheingaus unter besonderer Berücksichtigung ihrer Pathogenität

    OpenAIRE

    Hammes, Markus Johannes

    2008-01-01

    Ziel der Untersuchungen war, Pilze aus geschädigtem und ungeschädigtem Wurzelmaterial konventionell und ökologisch bewirtschafteter Weinbergsböden zu isolieren und diese auf ihre Durchsetzungsfähigkeit gegenüber den anderen Arten bzw. deren Pilzmetabolitsuspensionen unter unterschiedlichen Nahrungsbedingungen zu prüfen und eine eventuelle substratabhängige Verhaltensänderung bei den Spezies in Interaktion festzustellen. Zudem wurde in weiteren In-vitro- Versuchen das pathoge...

  14. ZPID-Monitor 2005 zur Internationalität der Psychologie aus dem deutschsprachigen Bereich: Der ausführliche Bericht

    OpenAIRE

    Krampen, Günter; Schui, Gabriel

    2008-01-01

    Die für das dokumentarisch abgeschlossene Publikationsjahr 2005 aktualisierten Befunde des in Abstimmung mit dem DGPs-Präsidium durchgeführten ZPID-Monitorings zur Internationalisierung der Psychologie im deutschsprachigen Bereich werden ausführlich dargestellt (zur Methode siehe etwa Krampen, Montada, Müller & Schui, 2005). Verändert ist Modul 3, in dem erstmalig die englischsprachigen Fachzeitschriften mit den häufigsten Autorenschaften aus dem deutschsprachigen Bereich aufgeführt werden....

  15. [Robert Schweitzer. Eine Unveröffentlichte Quelle zur Schulgeschichte von Reval Ferdinand Wiedemanns Geschichte des Revaler Gouvernementsgymnasiums aus dem Jahr 1856] / Paul Kaegbein

    Index Scriptorium Estoniae

    Kaegbein, Paul

    2008-01-01

    Arvustus: Robert Schweitzer. Eine Unveröffentlichte Quelle zur Schulgeschichte von Reval Ferdinand Wiedemanns Geschichte des Revaler Gouvernementsgymnasiums aus dem Jahr 1856. - Buch und Bildung im Baltikum. Münster : LIT, 2005. lk. 495-525. Kubermangugümnaasiumi vanemõpetaja Ferdinand Wiedemann kirjutas 1856. aastal kooli ajaloo, mis mingitel põhjustel jäi avaldamata. Tema tööd on kasutanud 1881. aastal Gotthard von Hansen

  16. Ausgewählte Aspekte des Cloud-Computing aus einer IT-Management-Perspektive: Cloud Governance, Cloud Security und Einsatz von Cloud Computing in jungen Unternehmen

    OpenAIRE

    Adelsberger, Heimo; Drechsler, Andreas

    2010-01-01

    Dieser Forschungsbericht leistet einen Beitrag zu einer wissenschaftlich fundierten Betrachtung des Hype-Themas Cloud Computing aus der Perspektive des IT-Managements. Die beiden erstgenannten Beiträge des Bandes analysieren die Auswirkungen des Einsatzes von Cloud Computing-Diensten auf spezifische IT-Management-Fragestellungen (IT-Governance bzw. IT-Sicherheits- und IT-Risikomanagement) und geben auf dieser Basis praktische Handlungsempfehlungen für IT-Entscheider. Der dritte Beitrag fasst ...

  17. Trauma. Die Spirale zwischenmenschlicher Gewalt aus feministisch-psychotherapeutischer Perspektive Trauma—The Spiral of Interpersonal Violence from a Feminist-Psychoanalytic Perspective

    OpenAIRE

    Christina Kleiser

    2005-01-01

    Die Psychotherapeutin Michaela Huber hat auf knapp sechshundert Seiten ein gleichermaßen sensibles wie engagiertes „Standardwerk“ der Traumabehandlung geschrieben. Die Zuerkennung dieser Auszeichnung durch das Österreichische Netzwerk für Traumatherapie erfolgt zu Recht. Vom Standpunkt der so genannten empathischen Abstinenz aus vermittelt Huber auf anspruchsvolle, doch durchweg gut verständliche Weise, wie ein Trauma entsteht und wirkt, was man sich unter einer Traumabehandlung vorzustellen ...

  18. Entwicklung eines Rechenverfahrens für keilgezinkte Rahmenecken und Biegeträger ohne oder mit Zwischenstück aus Brettschichtholz oder Holzwerkstoffplatten

    OpenAIRE

    Wiegand, Tobias

    2003-01-01

    Keilgezinkte Rahmenecken und Biegeträger mit oder ohne Zwischenstücken werden aus Brettschichtholz- und Holzwerkstoffabschnitten hergestellt, die mittels Universalkeilzinken-verbindungen (UKZV) gestoßen werden. In UKZV werden die zu verbindenden Abschnitte in einer quer zur Systemachse verlaufenden, über die gesamte Querschnittshöhe gefrästen Keilzinkung miteinander verklebt. Traglastversuche sind sehr aufwändig. Es wird daher ein Rechenmodell zur Abschätzung der Tragfähigkeit...

  19. Body concept quality and precision. Uniform impression of quality; Konzeptqualitaet und Praezision der Karosserie. Wertanmutung aus einem Guss

    Energy Technology Data Exchange (ETDEWEB)

    Trost, W.; Siehler, U.; Tenfelde, H.

    2002-05-01

    The bodyshell performs a central integration function in the overall vehicle system. The goal of development was to bring all requirements and interfaces to major assemblies and equipment components 'under one umbrella'. In addition, the engineers wished to further increase the standards set in this vehicle class in the previous model in disciplines such as structural strength, long-term quality, lightweight design, aerodynamics and - by no means least - safety. The body is additionally characterised by even better noise and vibration comfort, perfect directional stability nd road adhesion and very good repair-friendliness. (orig.) [German] Im System Gesamtfahrzeug erfuellt der Karosserie-Rohbau eine zentrale Integrationsfunktion. Bei der Entwicklung galt es, alle Anforderungen und Schnittstellen zu Aggregaten und Ausstattungsteilen 'unter einen Hut' zu bringen. Zusaetzlich wollten die Ingenieure die bereits beim Vorgaengermodell in wichtigen Disziplinen wie Strukturfestigkeit, Langzeitqualitaet, Leichtbau, Aerodynamik und nicht zuletzt Sicherheit gesetzten Massstaebe noch weiter steigern. Die Karosserie der neuen E-Klasse zeichnet sich ausserdem durch einen noch besseren Geraeusch- und Schwingungskomfort, perfekte Fahrstabilitaet und sehr gute Reparaturfreundlichkeit aus. (orig.)

  20. Lithospheric reworking at the Proterozoic-Phanerozoic transition of Australia imaged using AusLAMP Magnetotelluric data

    Science.gov (United States)

    Robertson, Kate; Heinson, Graham; Thiel, Stephan

    2016-10-01

    Seventy-four stations from the long-period Australia-wide AusLAMP (Australian Lithospheric Architecture Magnetotelluric Project) dataset were used to image the electrical resistivity beneath the Neoproterozoic Ikara-Flinders Ranges and adjacent Palaeo-Mesoproterozoic Curnamona Province. Results from 3D inversions using ModEM software show a relatively resistive Ikara-Flinders Ranges, with two parallel arcuate conductors at 20 to 80 km depth in the Nackara Arc. There is a good correlation of diamondiferous kimberlites occurring over conductors, which we interpret as evidence for these conductors to be residing on large lithospheric structures that have been conduits for partial melt and volatile movement in the Jurassic. The Curnamona Province is remarkably conductive for a region that is thought to have a cratonic core, with Delamerian reworking only at its edges. The conductor covers most of the province at depths of 10-40 km, and its presence at lower crustal depths suggests that conductive sediments can not entirely explain it. Fluids associated with subduction may have pervasively modified the crust in the past, resulting in an enrichment of carbon, enhancing the conductivity. Additionally, we conclude that the notion of a single continuous arcuate Flinders Conductivity Anomaly is unlikely and that the anomalous response observed is instead a result of the combined response of three separate anomalies; the Curnamona Province Conductor and the two Nackara Arc Conductors.

  1. Uroboros : [aus "Uroboros"] : [luuletused] / Ene Mihkelson ; tlk. Irja Grönholm ja Gisbert Jänicke

    Index Scriptorium Estoniae

    Mihkelson, Ene, 1944-

    2006-01-01

    Sisu: Uroboros : "In der Nacht fragt heimlich jemand Wie heisst du..." ; "Am Meer stand ein Mann mit einer Sense..." ; "An dem Tag als es Kugeln regnete..." ; "Zum Zeitvertrieb ersteigerte ich mir auf einer Auktion ein paar..." ; "Sie hat sich mit der Zeit eingelassen und daraus..." ; Das Feld ; "Mutter ist wieder bei mir obgleich..." ; "Wir waren ein Mädchen Wir redeten..." ; "Als ich vier Jahre alt wurde Da wurde so viel..." ; "Wer ist dein Vater Der Fremde aus der Ferne..." ; "Das letzte Wort Das letzte Das letzte Das allein...". Orig.: Uroboros : "Öö aegu keegi küsib sala Mis su nimi on..." ; "Mere ees seisis vikatiga mees..." ; "Sel päeval kui sadas kuulivihma..." ; "Ajaviiteks ostsin enampakkumisel sõpru..." ; "Ta ajaga läinud on sohki ja sellest..." ; Põld ; "Mu ema on jälle mu juures kuigi..." ; "Meid oli üks türduk Me rääkisime..." ; "Kui olin saanud neljaseks Nii väga kiitis..." ; "Kes on su isa Kaugelt tulnud võõras..." ; "Viimast sõna Viimast Viimast Ainu..."

  2. Purifying flue gas scrubber washings by means of membranes; Membranunterstuetztes Verfahren zur Reinigung von Waschwasser aus Rauchgasreinigungsanlagen

    Energy Technology Data Exchange (ETDEWEB)

    Rosenwinkel, K.H.; Nagy, J. [Hannover Univ. (Germany). Inst. fuer Siedlungswasserwirtschaft und Abfalltechnik; Mueller, H.; Baumgarten, G. [Amafilter Deutschland, Langenhagen (Germany)

    1997-12-31

    A process was developed to purify the wastewater of a flue gas purification process of a wood combustion plant. The water treatment process consists of a filtration with saw-dust and a reverse-osmosis process. A pilot plant has been developed and the performance has been tested. (SR) [Deutsch] Im Auftrag der Firma Wilhelm Mende GmbH, Gittelde/Harz, fuehrt das Institut fuer Siedlungswasserwirtschaft und Abfalltechnik der Universitaet Hannover im Fruehjahr 1996 am Waschwasser der dortigen Rauchgasreinigungsanlage eine Bestandsaufnahme durch, um die Ursachen fuer die Betriebsstoerungen herauszufinden. Bei den Untersuchungen wurde festgestellt, dass die Waschwasserreinigung nur unzureichend funktionierte und einige konzeptionelle Fehler aufwies. Aufbauend auf den Voruntersuchungen wurde ein kombiniertes Verfahren aus herkoemmlicher Filtration und einer Umkehrosmose entwickelt, mit dem es moeglich sein sollte, die Belastung des Waschwassers auf einem fuer die Systemstabilitaet ausreichenden Niveau zu halten. Das Konzept wurde in Pilotversuchen im Fruehherbst 1996 erfolgreich geprueft. Die grosstechnische Anlage wird derzeit von der Fa. Amafilter installiert und getestet. Betriebsergebnisse liegen z.Zt. noch nicht vor. Die wissenschaftliche Inbetriebnahmebegleitung erfolgt durch das Institut und wird von der Deutschen Bundesstiftung Umwelt gefoerdert. (orig.)

  3. Supercritical water gasification of biomass: an experimental study of model compounds and potential biomass feeds

    NARCIS (Netherlands)

    Chakinala, Anand Gupta

    2013-01-01

    Gasification of biomass in supercritical water is a complex process. In supercritical water ideally the biomass structure and the larger molecules are broken down into smaller, gaseous components under the influence of radicals. However, the biomass is normally fed to the system at low temperature a

  4. Comparing incident diabetes as defined by fasting plasma glucose or by HbA(1c). The AusDiab, Inter99 and DESIR studies

    DEFF Research Database (Denmark)

    Soulimane, S.; Simon, D.; Shaw, J. E.;

    2011-01-01

    Aim We examined the ability of fasting plasma glucose and HbA(1c) to predict 5-year incident diabetes for an Australian cohort and a Danish cohort and 6-year incident diabetes for a French cohort, as defined by the corresponding criteria. Methods We studied 6025 men and women from AusDiab (Austra......Aim We examined the ability of fasting plasma glucose and HbA(1c) to predict 5-year incident diabetes for an Australian cohort and a Danish cohort and 6-year incident diabetes for a French cohort, as defined by the corresponding criteria. Methods We studied 6025 men and women from Aus......Diab (Australian), 4703 from Inter99 (Danish) and 3784 from DESIR (French), not treated for diabetes and with fasting plasma glucose A(1c) = 7.0 mmol/l and/or treatment for diabetes or as HbA(1c) >= 48 mmol/mol (6.......5%) and/or treatment for diabetes. Results For AusDiab, incident fasting plasma glucose-defined diabetes was more frequent than HbA(1c)-defined diabetes (P-McNemar

  5. Coal providing of power plant Rostock - experiences from the planing, commissioning and operation; Kohleversorgung des Kraftwerks Rostock - Erfahrungen aus der Planung, der Inbetriebsetzung und dem Dauerbetrieb

    Energy Technology Data Exchange (ETDEWEB)

    Kusch, H. [KNG, Rostock (Germany)

    1996-12-31

    The coal providing of the power plant Rostock, which is on duty since may 1994, take place from the sea harbour. Because of the favourable territory relations of the sea harbour we built there a active storage. The coal from Europe and oversea is going over the modernized coalbunkering quay and conveyor bridges to the storage place. The automatical reclaimer pick up the coal in predifined ratio of coal and put them on the 3000 m long conveyor belt, which is going directly in the boiler house. In this report are experiences from the planning - and commissioning time and also from the 2 years operation time. (orig.) [Deutsch] Die Kohleversorgung fuer das Steinkohlekraftwerk Rostock, das im Mai 1994 in Betrieb ging, wird ueber den naheliegenden Seehafen Rostock realisiert. Unter Nutzung guenstiger territorialer Verhaeltnisse wurde im Seehafen Rostock ein Aktivlager errichtet. Die im Seehafen angelandete Steinkohle aus Europa und Uebersee wurde und wird nach Rekonstruktion der vorhandenen Schiffsentlader ueber Bandbruecken zum Kohlelagerplatz transportiert und zwischengelagert. Automatisch arbeitende Portalkratzer erfassen die Kohle in vorgegebenen Mischungsverhaeltnissen. Ueber eine insgesamt ca. 3.000 m lange Bandanlage gelangt diese dann in das Kraftwerk. Es werden Erfahrungen aus der Planungs-, Realisierungs- und Inbetriebsetzungsphase, als auch aus einem nunmehr ueber 2-jaehrigen Betrieb uebermittelt. (orig.)

  6. Biomass in a sustainable energy system

    International Nuclear Information System (INIS)

    In this thesis, aspects of an increase in the utilization of biomass in the Swedish energy system are treated. Modern bioenergy systems should be based on high energy and land use efficiency since biomass resources and productive land are limited. The energy input, including transportation, per unit biomass produced is about 4-5% for logging residues, straw and short rotation forest (Salix). Salix has the highest net energy yield per hectare among the various energy crops cultivated in Sweden. The CO2 emissions from the production and transportation of logging residues, straw and Salix, are equivalent to 2-3% of those from a complete fuel-cycle for coal. Substituting biomass for fossil fuels in electricity and heat production is, in general, less costly and leads to a greater CO2 reduction per unit biomass than substituting biomass derived transportation fuels for petrol or diesel. Transportation fuels produced from cellulosic biomass provide larger and less expensive CO2 emission reductions than transportation fuels from annual crops. Swedish CO2 emissions could be reduced by about 50% from the present level if fossil fuels are replaced and the energy demand is unchanged. There is a good balance between potential regional production and utilization of biomass in Sweden. Future biomass transportation distances need not be longer than, on average, about 40 km. About 22 TWh electricity could be produced annually from biomass in large district heating systems by cogeneration. Cultivation of Salix and energy grass could be utilized to reduce the negative environmental impact of current agricultural practices, such as the emission of greenhouse gases, nutrient leaching, decreased soil fertility and erosion, and for the treatment of municipal waste and sludge, leading to increased recirculation of nutrients. About 20 TWh biomass could theoretically be produced per year at an average cost of less than 50% of current production cost, if the economic value of these local

  7. Biomass in a sustainable energy system

    Energy Technology Data Exchange (ETDEWEB)

    Boerjesson, Paal

    1998-04-01

    In this thesis, aspects of an increase in the utilization of biomass in the Swedish energy system are treated. Modern bioenergy systems should be based on high energy and land use efficiency since biomass resources and productive land are limited. The energy input, including transportation, per unit biomass produced is about 4-5% for logging residues, straw and short rotation forest (Salix). Salix has the highest net energy yield per hectare among the various energy crops cultivated in Sweden. The CO{sub 2} emissions from the production and transportation of logging residues, straw and Salix, are equivalent to 2-3% of those from a complete fuel-cycle for coal. Substituting biomass for fossil fuels in electricity and heat production is, in general, less costly and leads to a greater CO{sub 2} reduction per unit biomass than substituting biomass derived transportation fuels for petrol or diesel. Transportation fuels produced from cellulosic biomass provide larger and less expensive CO{sub 2} emission reductions than transportation fuels from annual crops. Swedish CO{sub 2} emissions could be reduced by about 50% from the present level if fossil fuels are replaced and the energy demand is unchanged. There is a good balance between potential regional production and utilization of biomass in Sweden. Future biomass transportation distances need not be longer than, on average, about 40 km. About 22 TWh electricity could be produced annually from biomass in large district heating systems by cogeneration. Cultivation of Salix and energy grass could be utilized to reduce the negative environmental impact of current agricultural practices, such as the emission of greenhouse gases, nutrient leaching, decreased soil fertility and erosion, and for the treatment of municipal waste and sludge, leading to increased recirculation of nutrients. About 20 TWh biomass could theoretically be produced per year at an average cost of less than 50% of current production cost, if the economic

  8. Identifizierung und Quantifizierung von sauren Markersubstanzen für troposphärisches sekundäres organisches Aerosol aus biogenen Kohlenwasserstoffen mittels Kapillar-HPLC-ESI-MS n

    OpenAIRE

    Warnke, Jörg

    2004-01-01

    Sekundäres organisches Aerosol (SOA) ist ein wichtiger Bestandteil von atmosphärischen Aerosolpartikeln. Atmosphärische Aerosole sind bedeutsam, da sie das Klima über direkte (Streuung und Absorption von Strahlung) und indirekte (Wolken-Kondensationskeime) Effekte beeinflussen. Nach bisherigen Schätzungen ist die SOA-Bildung aus biogenen Kohlenwasserstoffen global weit wichtiger als die SOA-Bildung aus anthropogenen Kohlenwasserstoffen. Reaktive Kohlenwasserstoffe, die in großen Mengen von de...

  9. Conservative species drive biomass productivity in tropical dry forests

    NARCIS (Netherlands)

    Prado-Junior, Jamir A.; Schiavini, Ivan; Vale, Vagner S.; Sande, van der Masha T.; Lohbeck, Madelon; Poorter, Lourens

    2016-01-01

    Forests account for a substantial part of the terrestrial biomass storage and productivity. To better understand forest productivity, we need to disentangle the processes underlying net biomass change. We tested how above-ground net biomass change and its underlying biomass dynamics (biomass recr

  10. Thermodynamic approach to biomass gasification

    International Nuclear Information System (INIS)

    The document presents an approach of biomass transformation in presence of steam, hydrogen or oxygen. Calculation results based on thermodynamic equilibrium are discussed. The objective of gasification techniques is to increase the gas content in CO and H2. The maximum content in these gases is obtained when thermodynamic equilibrium is approached. Any optimisation action of a process. will, thus, tend to approach thermodynamic equilibrium conditions. On the other hand, such calculations can be used to determine the conditions which lead to an increase in the production of CO and H2. An objective is also to determine transformation enthalpies that are an important input for process calculations. Various existing processes are assessed, and associated thermodynamic limitations are evidenced. (author)

  11. Soybean biomass produced in Argentina

    DEFF Research Database (Denmark)

    Semino, Stella; Paul, Helena; Tomei, Julia;

    Soybean biomass for biodiesel, produced in Argentina amongst other places, is considered by some to reduce greenhouse gas emissions and mitigate climate change when compared with fossil fuel. To ensure that the production of biofuels is ‘sustainable', EU institutions and national governments are...... been demonstrated in several studies, but the atmospheric impact of soybean cultivation has not been tested in situ. Some of the models for climate impact (N2O emissions etc) are based on in vitro studies, while field data are scarce. The situation, which is outside the control of the EU, has not been...... environmental sustainability. This is exemplified by soy, whose cultivation undermines the climate benefit claimed for soy-based biodiesel. This paper concludes that to certify soy monocultures as sustainable would exacerbate existing climatic and environmental problems....

  12. Mini-biomass electric generation

    Energy Technology Data Exchange (ETDEWEB)

    Elliot, G. [International Applied Engineering, Inc., Atlanta, GA (United States)

    1997-12-01

    Awareness of the living standards achieved by others has resulted in a Russian population which is yearning for a higher standard of living. Such a situation demands access to affordable electricity in remote areas. Remote energy requirements creates the need to transport power or fossil fuels over long distances. Application of local renewable energy resources could eliminate the need for and costs of long distance power supply. Vast forest resources spread over most of Russia make biomass an ideal renewable energy candidate for many off-grid villages. The primary objective for this preliminary evaluation is to examine the economic feasibility of replacing distillate and gasoline fuels with local waste biomass as the primary fuel for village energy in outlying regions of Russia. Approximately 20 million people live in regions where Russia`s Unified Electric System grid does not penetrate. Most of these people are connected to smaller independent power grids, but approximately 8 million Russians live in off-grid villages and small towns served by stand-alone generation systems using either diesel fuel or gasoline. The off-grid villages depend on expensive distillate fuels and gasoline for combustion in small boilers and engines. These fuels are used for both electricity generation and district heating. Typically, diesel generator systems with a capacity of up to 1 MW serve a collective farm, settlement and their rural enterprises (there are an estimated 10,000 such systems in Russia). Smaller gasoline-fueled generator systems with capacities in the range of 0.5 - 5 kW serve smaller farms or rural enterprises (there are about 60,000 such systems in Russia).

  13. Pb2+ Biosorption by Pretreated Fungal Biomass

    OpenAIRE

    ÇABUK, Ahmet; İLHAN, Semra; FİLİK, Cansu; ÇALIŞKAN, Figen

    2005-01-01

    The effect of pretreatment on the Pb2+ biosorption capacity of fungal biomasses, Aspergillus versicolor, Metarrhizium anisopliae var. anisopliae, and Penicillium verrucosum, was investigated. For this purpose, the biomasses were subjected to physical treatments such as heat and autoclaving, and chemical treatments such as sodium hydroxide, formaldehyde, gluteraldehyde, acetic acid, hydrogen peroxide, commercial laundry detergent, orthophosphoric acid and dimethyl sulfoxide. Dimethyl sulfoxid...

  14. Stabilization of biomass-derived pyrolysis oils

    NARCIS (Netherlands)

    Venderbosch, R. H.; Ardiyanti, A. R.; Wildschut, J.; Oasmaa, A.; Heeres, H. J.

    2010-01-01

    BACKGROUND: Biomass is the only renewable feedstock containing carbon, and therefore the only alternative to fossil-derived crude oil derivatives. However, the main problems concerning the application of biomass for biofuels and bio-based chemicals are related to transport and handling, the limited

  15. Lessons learned from existing biomass power plants

    Energy Technology Data Exchange (ETDEWEB)

    Wiltsee, G.

    2000-02-24

    This report includes summary information on 20 biomass power plants, which represent some of the leaders in the industry. In each category an effort is made to identify plants that illustrate particular points. The project experiences described capture some important lessons learned that lead in the direction of an improved biomass power industry.

  16. Processes for pretreating lignocellulosic biomass: A review

    Energy Technology Data Exchange (ETDEWEB)

    McMillan, J D

    1992-11-01

    This paper reviews existing and proposed pretreatment processes for biomass. The focus is on the mechanisms by which the various pretreatments act and the influence of biomass structure and composition on the efficacy of particular pretreatment techniques. This analysis is used to identify pretreatment technologies and issues that warrant further research.

  17. Biomass energy - Definitions, resources and transformation processes

    International Nuclear Information System (INIS)

    Biomass energy is today considered as a new renewable energy source, and thus, has entered a regulatory framework aiming at encouraging its development for CO2 pollution abatement. This book addresses the constraints, both natural and technological, of the exploitation of the biomass resource, and then the economical and regulatory aspects of this industry. This second edition provides a complement about the plants used and the new R and D progresses made in this domain. Content: 1 - Definitions and general considerations: natural organic products, regulatory and standardized definitions, energy aspects of biomass fuels; 2 - Resources: energy production dedicated crops, biomass by-products, biomass from wastes; 3 - Biomass to energy transformation processes: combustion, gasification, pyrolysis, torrefaction, methanation, alcoholic fermentation, landfill biogas, Fischer-Tropsch synthesis, methanol synthesis, trans-esterification, synthetic natural gas production, bio-hydrogen production; 4 - Biofuels: solid fuels, solid automotive biofuels, gaseous biofuels, liquid biofuels, comparative efficiency; 5 - Situation of biomass energy: regulations, impact on non-energy purpose biomass, advantages and drawbacks

  18. SERI Biomass Program. FY 1983 annual report

    Energy Technology Data Exchange (ETDEWEB)

    Corder, R.E.; Hill, A.M.; Lindsey, H.; Lowenstein, M.Z.; McIntosh, R.P.

    1984-02-01

    This report summarizes the progress and research accomplishments of the SERI Biomass Program during FY 1983. The SERI Biomass Program consists of three elements: Aquatic Species, Anaerobic Digestion, and Photo/Biological Hydrogen. Each element has been indexed separately. 2 references, 44 figures, 22 tables.

  19. Biomass Program 2007 Accomplishments - Full Report

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2009-10-27

    The Office of Energy Efficiency and Renewable Energy's (EERE’s) Biomass Program works with industry, academia and its national laboratory partners on a balanced portfolio of research in biomass feedstocks and conversion technologies. This document provides Program accomplishments for 2007.

  20. Biomass electrochemistry : from cellulose to sorbitol

    NARCIS (Netherlands)

    Kwon, Youngkook

    2013-01-01

    The primary goal of this thesis is to study the potential role of electrochemistry in finding new routes for sustainable chemicals from biomass in aqueous-phase solutions. In order to assess the potential of electrochemistry in biomass conversion, we developed an online HPLC system by using a fracti

  1. Structural Studies of Biomass Degrading Enzyme Systems

    Energy Technology Data Exchange (ETDEWEB)

    Lunin, Vladimir V.; Alahuhta, Markus; Brunecky, Roman; Donohoe, Bryon; Xu, Qi; Bomble, Yannick J.; Himmel, Michael E.

    2014-08-05

    Renewable energy today comprises wind, photovoltaics, geothermal, and biofuels. Biomass is the leading source of renewable, sustainable energy used for the production of liquid transportation fuels. While the focus is shifting today from the ethanol towards next generation or advanced biofuels the real challenge however remains the same: reducing the recalcitrance of biomass to deconstruction, which yields the sugars needed for further processing.

  2. Gene discovery and engineering for biomass degradation

    Science.gov (United States)

    The eventual depletion of the world’s fossil fuel reserves has generated intense interest in alternatives. Lignocellulosic biomass represents a viable source for our future fuel and chemical feedstock needs. Hemicellulose is the second most common component of biomass. It is composed primarily of...

  3. Biomass resilience of Neotropical secondary forests.

    Science.gov (United States)

    Poorter, Lourens; Bongers, Frans; Aide, T Mitchell; Almeyda Zambrano, Angélica M; Balvanera, Patricia; Becknell, Justin M; Boukili, Vanessa; Brancalion, Pedro H S; Broadbent, Eben N; Chazdon, Robin L; Craven, Dylan; de Almeida-Cortez, Jarcilene S; Cabral, George A L; de Jong, Ben H J; Denslow, Julie S; Dent, Daisy H; DeWalt, Saara J; Dupuy, Juan M; Durán, Sandra M; Espírito-Santo, Mario M; Fandino, María C; César, Ricardo G; Hall, Jefferson S; Hernandez-Stefanoni, José Luis; Jakovac, Catarina C; Junqueira, André B; Kennard, Deborah; Letcher, Susan G; Licona, Juan-Carlos; Lohbeck, Madelon; Marín-Spiotta, Erika; Martínez-Ramos, Miguel; Massoca, Paulo; Meave, Jorge A; Mesquita, Rita; Mora, Francisco; Muñoz, Rodrigo; Muscarella, Robert; Nunes, Yule R F; Ochoa-Gaona, Susana; de Oliveira, Alexandre A; Orihuela-Belmonte, Edith; Peña-Claros, Marielos; Pérez-García, Eduardo A; Piotto, Daniel; Powers, Jennifer S; Rodríguez-Velázquez, Jorge; Romero-Pérez, I Eunice; Ruíz, Jorge; Saldarriaga, Juan G; Sanchez-Azofeifa, Arturo; Schwartz, Naomi B; Steininger, Marc K; Swenson, Nathan G; Toledo, Marisol; Uriarte, Maria; van Breugel, Michiel; van der Wal, Hans; Veloso, Maria D M; Vester, Hans F M; Vicentini, Alberto; Vieira, Ima C G; Bentos, Tony Vizcarra; Williamson, G Bruce; Rozendaal, Danaë M A

    2016-02-11

    Land-use change occurs nowhere more rapidly than in the tropics, where the imbalance between deforestation and forest regrowth has large consequences for the global carbon cycle. However, considerable uncertainty remains about the rate of biomass recovery in secondary forests, and how these rates are influenced by climate, landscape, and prior land use. Here we analyse aboveground biomass recovery during secondary succession in 45 forest sites and about 1,500 forest plots covering the major environmental gradients in the Neotropics. The studied secondary forests are highly productive and resilient. Aboveground biomass recovery after 20 years was on average 122 megagrams per hectare (Mg ha(-1)), corresponding to a net carbon uptake of 3.05 Mg C ha(-1) yr(-1), 11 times the uptake rate of old-growth forests. Aboveground biomass stocks took a median time of 66 years to recover to 90% of old-growth values. Aboveground biomass recovery after 20 years varied 11.3-fold (from 20 to 225 Mg ha(-1)) across sites, and this recovery increased with water availability (higher local rainfall and lower climatic water deficit). We present a biomass recovery map of Latin America, which illustrates geographical and climatic variation in carbon sequestration potential during forest regrowth. The map will support policies to minimize forest loss in areas where biomass resilience is naturally low (such as seasonally dry forest regions) and promote forest regeneration and restoration in humid tropical lowland areas with high biomass resilience.

  4. Materials for Waste Incinerators and Biomass Plants

    DEFF Research Database (Denmark)

    Rademakers, P.; Grossmann, G.; Karlsson, A.;

    1998-01-01

    This paper reviews the projects of the sub-package on waste incineration and biomass firing carried out within COST 501 Round III, Work Package 13.......This paper reviews the projects of the sub-package on waste incineration and biomass firing carried out within COST 501 Round III, Work Package 13....

  5. Process and apparatus for conversion of biomass

    NARCIS (Netherlands)

    Bakker, R.R.C.; Hazewinkel, J.H.O.; Groenestijn, van J.W.

    2006-01-01

    The invention is directed to a process for the conversion of biomass, in particular lignocellulose-containing biomass into a product that may be further processes in a fermentation step. The invention is further directed to apparatus suitable for carrying out such processes. According to the inventi

  6. Environmental implications of increased biomass energy use

    Energy Technology Data Exchange (ETDEWEB)

    Miles, T.R. Sr.; Miles, T.R. Jr. (Miles (Thomas R.), Portland, OR (United States))

    1992-03-01

    This study reviews the environmental implications of continued and increased use of biomass for energy to determine what concerns have been and need to be addressed and to establish some guidelines for developing future resources and technologies. Although renewable biomass energy is perceived as environmentally desirable compared with fossil fuels, the environmental impact of increased biomass use needs to be identified and recognized. Industries and utilities evaluating the potential to convert biomass to heat, electricity, and transportation fuels must consider whether the resource is reliable and abundant, and whether biomass production and conversion is environmentally preferred. A broad range of studies and events in the United States were reviewed to assess the inventory of forest, agricultural, and urban biomass fuels; characterize biomass fuel types, their occurrence, and their suitability; describe regulatory and environmental effects on the availability and use of biomass for energy; and identify areas for further study. The following sections address resource, environmental, and policy needs. Several specific actions are recommended for utilities, nonutility power generators, and public agencies.

  7. Anaerobic digestion in sustainable biomass chains

    NARCIS (Netherlands)

    Pabon Pereira, C.P.

    2009-01-01

    This thesis evaluates the potential contribution of anaerobic digestion (AD) to the sustainability of biomass chains. Results provide insights in the technological potential to recover energy and valuable by-products from energy crops and residues, and evaluate biomass cascades involving AD technolo

  8. Biomass resilience of Neotropical secondary forests

    Science.gov (United States)

    Poorter, Lourens; Bongers, Frans; Aide, T. Mitchell; Almeyda Zambrano, Angélica M.; Balvanera, Patricia; Becknell, Justin M.; Boukili, Vanessa; Brancalion, Pedro H. S.; Broadbent, Eben N.; Chazdon, Robin L.; Craven, Dylan; de Almeida-Cortez, Jarcilene S.; Cabral, George A. L.; de Jong, Ben H. J.; Denslow, Julie S.; Dent, Daisy H.; Dewalt, Saara J.; Dupuy, Juan M.; Durán, Sandra M.; Espírito-Santo, Mario M.; Fandino, María C.; César, Ricardo G.; Hall, Jefferson S.; Hernandez-Stefanoni, José Luis; Jakovac, Catarina C.; Junqueira, André B.; Kennard, Deborah; Letcher, Susan G.; Licona, Juan-Carlos; Lohbeck, Madelon; Marín-Spiotta, Erika; Martínez-Ramos, Miguel; Massoca, Paulo; Meave, Jorge A.; Mesquita, Rita; Mora, Francisco; Muñoz, Rodrigo; Muscarella, Robert; Nunes, Yule R. F.; Ochoa-Gaona, Susana; de Oliveira, Alexandre A.; Orihuela-Belmonte, Edith; Peña-Claros, Marielos; Pérez-García, Eduardo A.; Piotto, Daniel; Powers, Jennifer S.; Rodríguez-Velázquez, Jorge; Romero-Pérez, I. Eunice; Ruíz, Jorge; Saldarriaga, Juan G.; Sanchez-Azofeifa, Arturo; Schwartz, Naomi B.; Steininger, Marc K.; Swenson, Nathan G.; Toledo, Marisol; Uriarte, Maria; van Breugel, Michiel; van der Wal, Hans; Veloso, Maria D. M.; Vester, Hans F. M.; Vicentini, Alberto; Vieira, Ima C. G.; Bentos, Tony Vizcarra; Williamson, G. Bruce; Rozendaal, Danaë M. A.

    2016-02-01

    Land-use change occurs nowhere more rapidly than in the tropics, where the imbalance between deforestation and forest regrowth has large consequences for the global carbon cycle. However, considerable uncertainty remains about the rate of biomass recovery in secondary forests, and how these rates are influenced by climate, landscape, and prior land use. Here we analyse aboveground biomass recovery during secondary succession in 45 forest sites and about 1,500 forest plots covering the major environmental gradients in the Neotropics. The studied secondary forests are highly productive and resilient. Aboveground biomass recovery after 20 years was on average 122 megagrams per hectare (Mg ha-1), corresponding to a net carbon uptake of 3.05 Mg C ha-1 yr-1, 11 times the uptake rate of old-growth forests. Aboveground biomass stocks took a median time of 66 years to recover to 90% of old-growth values. Aboveground biomass recovery after 20 years varied 11.3-fold (from 20 to 225 Mg ha-1) across sites, and this recovery increased with water availability (higher local rainfall and lower climatic water deficit). We present a biomass recovery map of Latin America, which illustrates geographical and climatic variation in carbon sequestration potential during forest regrowth. The map will support policies to minimize forest loss in areas where biomass resilience is naturally low (such as seasonally dry forest regions) and promote forest regeneration and restoration in humid tropical lowland areas with high biomass resilience.

  9. Synthetic and Biomass Alternate Fueling in Aviation

    Science.gov (United States)

    Hendricks, Robert C.; Bushnell, Dennis M.

    2009-01-01

    Must use earth's most abundant natural resources - Biomass, Solar, Arid land (43%), Seawater (97%) with nutrients (80%) plus brackish waters and nutrients resolve environmental triangle of conflicts energy-food-freshwater and ultrafine particulate hazards. Requires Paradigm Shift - Develop and Use Solar* for energy; Biomass for aviation and hybrid-electric-compressed air mobility fueling with transition to hydrogen long term.

  10. Biomass energy, forests and global warming

    International Nuclear Information System (INIS)

    Biomass in all its forms currently provides about 14% of the world's energy, equivalent to 25 million bbl oil/day; in developing countries where it is the major energy source, biomass supplies 35% of total energy use. Although biomass energy use affects the flux of carbon to the atmosphere, the main carbon emission problem is caused by fossil fuels and land clearance for agriculture. Biomass fuels make no net contribution to atmospheric CO2 if used sustainably. A major global revegetation and reforestation effort is a possible strategy to reduce CO2 emissions and to slow the pace of climatic change. However, a more attractive alternative strategy might be to substitute fossil fuels, especially coal, with biomass grown specifically for this purpose producing modern fuels such as electricity, liquids and gases. This paper examines biomass energy use, devegetation, biomass burning, the implications for global warming and the ability of biomass to sequester CO2 and substitute for fossil fuels. It also discusses some socioeconomic and political issues. (author)

  11. Trends and Challenges in Catalytic Biomass Conversion

    DEFF Research Database (Denmark)

    Osmundsen, Christian Mårup; Egeblad, Kresten; Taarning, Esben

    2013-01-01

    . The conversion of biomass-derived substrates, such as glycerol, by hydrogenolysis to the important chemicals ethylene glycol and propane diols. Secondly, the conversion of carbohydrates by Lewis acidic zeolites to yield alkyl lactates, and finally the conversion of lignin, an abundant low value source of biomass...

  12. Freshwater aquatic plant biomass production in Florida

    Energy Technology Data Exchange (ETDEWEB)

    Reddy, K.R.; Sutton, D.L.; Bowes, G.

    1983-01-01

    About 8% (1.2 million ha) of the total surface area of Florida is occupied by freshwater. Many of these water bodies are eutrophic. Nutrients present in these water bodies can be potentially used to culture aquatic plants as a possible feedstock for methane production. This paper summarizes the results of known research findings on biomass production potential of freshwater aquatic plants in Florida and identifies key research needs to improve the quality and quantity of biomass yields. Among floating aquatic plants, biomass yield potential was in the order of water-hyacinth > water lettuce > pennywort > salvinia > duckweed > azolla. Pennywort, duckweed, and azolla appear to perform well during the cooler months compared to other aquatic plants. Among emergent plants, biomass yield potential was in the order of southern wild rice > cattails > soft rush > bulrush. Cultural techniques, nutrient management, and environmental factors influencing the biomass yields were discussed. 68 references.

  13. Assessment of Biomass Resources in Liberia

    Energy Technology Data Exchange (ETDEWEB)

    Milbrandt, A.

    2009-04-01

    Biomass resources meet about 99.5% of the Liberian population?s energy needs so they are vital to basic welfare and economic activity. Already, traditional biomass products like firewood and charcoal are the primary energy source used for domestic cooking and heating. However, other more efficient biomass technologies are available that could open opportunities for agriculture and rural development, and provide other socio-economic and environmental benefits.The main objective of this study is to estimate the biomass resources currently and potentially available in the country and evaluate their contribution for power generation and the production of transportation fuels. It intends to inform policy makers and industry developers of the biomass resource availability in Liberia, identify areas with high potential, and serve as a base for further, more detailed site-specific assessments.

  14. IMPROVING BIOMASS LOGISTICS COST WITHIN AGRONOMIC SUSTAINABILITY CONSTRAINTS AND BIOMASS QUALITY TARGETS

    Energy Technology Data Exchange (ETDEWEB)

    J. Richard Hess; Kevin L. Kenney; Christopher T. Wright; David J. Muth; William Smith

    2012-10-01

    Equipment manufacturers have made rapid improvements in biomass harvesting and handling equipment. These improvements have increased transportation and handling efficiencies due to higher biomass densities and reduced losses. Improvements in grinder efficiencies and capacity have reduced biomass grinding costs. Biomass collection efficiencies (the ratio of biomass collected to the amount available in the field) as high as 75% for crop residues and greater than 90% for perennial energy crops have also been demonstrated. However, as collection rates increase, the fraction of entrained soil in the biomass increases, and high biomass residue removal rates can violate agronomic sustainability limits. Advancements in quantifying multi-factor sustainability limits to increase removal rate as guided by sustainable residue removal plans, and mitigating soil contamination through targeted removal rates based on soil type and residue type/fraction is allowing the use of new high efficiency harvesting equipment and methods. As another consideration, single pass harvesting and other technologies that improve harvesting costs cause biomass storage moisture management challenges, which challenges are further perturbed by annual variability in biomass moisture content. Monitoring, sampling, simulation, and analysis provide basis for moisture, time, and quality relationships in storage, which has allowed the development of moisture tolerant storage systems and best management processes that combine moisture content and time to accommodate baled storage of wet material based upon “shelf-life.” The key to improving biomass supply logistics costs has been developing the associated agronomic sustainability and biomass quality technologies and processes that allow the implementation of equipment engineering solutions.

  15. Driftless Area Initiative Biomass Energy Project

    Energy Technology Data Exchange (ETDEWEB)

    Bertjens, Steve; Wright, Angie; Lieurance, Mike; berguson, bill; Buchman, Dan

    2012-12-31

    The Driftless Area Initiative Biomass Energy Project evaluated the potential for biomass energy production and utilization throughout the Driftless Region of Illinois, Iowa, Minnesota and Wisconsin. The research and demonstration aspect of the project specifically focused on biomass energy feedstock availability and production potential in the region, as well as utilization potential of biomass feedstocks for heat, electrical energy production, or combined heat and power operations. The Driftless Region was evaluated because the topography of the area offers more acres of marginal soils on steep slopes, wooded areas, and riparian corridors than the surrounding “Corn Belt”. These regional land characteristics were identified as potentially providing opportunity for biomass feedstock production that could compete with traditional agriculture commodity crops economically. The project researched establishment methods and costs for growing switchgrass on marginal agricultural lands to determine the economic and quantitative feasibility of switchgrass production for biomass energy purposes. The project was successful in identifying the best management and establishment practices for switchgrass in the Driftless Area, but also demonstrated that simple economic payback versus commodity crops could not be achieved at the time of the research. The project also analyzed the availability of woody biomass and production potential for growing woody biomass for large scale biomass energy production in the Driftless Area. Analysis determined that significant resources exist, but costs to harvest and deliver to the site were roughly 60% than that of natural gas at the time of the study. The project contributed significantly to identifying both production potential of biomass energy crops and existing feedstock availability in the Driftless Area. The project also analyzed the economic feasibility of dedicated energy crops in the Driftless Area. High commodity crop prices and

  16. Driftless Area Initiative Biomass Energy Project

    Energy Technology Data Exchange (ETDEWEB)

    Wright, Angie [Northeast Iowa Resource Conservation & Development, Inc., Postville, IA (United States); Bertjens, Steve [Natural Resources Conservation Service, Madison, WI (United States); Lieurance, Mike [Northeast Iowa Resource Conservation & Development, Inc., Postville, IA (United States); Berguson, Bill [Univ. of Minnesota, Minneapolis, MN (United States). Natural Resources Research Inst.; Buchman, Dan [Univ. of Minnesota, Minneapolis, MN (United States). Natural Resources Research Inst.

    2012-12-31

    The Driftless Area Initiative Biomass Energy Project evaluated the potential for biomass energy production and utilization throughout the Driftless Region of Illinois, Iowa, Minnesota and Wisconsin. The research and demonstration aspect of the project specifically focused on biomass energy feedstock availability and production potential in the region, as well as utilization potential of biomass feedstocks for heat, electrical energy production, or combined heat and power operations. The Driftless Region was evaluated because the topography of the area offers more acres of marginal soils on steep slopes, wooded areas, and riparian corridors than the surrounding “Corn Belt”. These regional land characteristics were identified as potentially providing opportunity for biomass feedstock production that could compete with traditional agriculture commodity crops economically. The project researched establishment methods and costs for growing switchgrass on marginal agricultural lands to determine the economic and quantitative feasibility of switchgrass production for biomass energy purposes. The project was successful in identifying the best management and establishment practices for switchgrass in the Driftless Area, but also demonstrated that simple economic payback versus commodity crops could not be achieved at the time of the research. The project also analyzed the availability of woody biomass and production potential for growing woody biomass for large scale biomass energy production in the Driftless Area. Analysis determined that significant resources exist, but costs to harvest and deliver to the site were roughly 60% greater than that of natural gas at the time of the study. The project contributed significantly to identifying both production potential of biomass energy crops and existing feedstock availability in the Driftless Area. The project also analyzed the economic feasibility of dedicated energy crops in the Driftless Area. High commodity crop prices

  17. Great Lakes Regional Biomass Energy Program

    International Nuclear Information System (INIS)

    The Great Lakes Regional Biomass Energy Program (GLRBEP) was initiated September, 1983, with a grant from the Office of Energy Efficiency and Renewable Energy of the US Department of Energy (DOE). The program provides resources to public and private organizations in the Great Lakes region to increase the utilization and production of biomass fuels. The objectives of the GLRBEP are to: (1) improve the capabilities and effectiveness of biomass energy programs in the state energy offices; (2) assess the availability of biomass resources for energy in light of other competing needs and uses; (3) encourage private sector investments in biomass energy technologies; (4) transfer the results of government-sponsored biomass research and development to the private sector; (5) eliminate or reduce barriers to private sector use of biomass fuels and technology; (6) prevent or substantially mitigate adverse environmental impacts of biomass energy use. The Program Director is responsible for the day-to-day activities of the GLRBEP and for implementing program mandates. A 40 member Technical Advisory Committee (TAC) sets priorities and recommends projects. The governor of each state in the region appoints a member to the Steering Council, which acts on recommendations of the TAC and sets basic program guidelines. The GLRBEP is divided into three separate operational elements. The State Grants component provides funds and direction to the seven state energy offices in the region to increase their capabilities in biomass energy. State-specific activities and interagency programs are emphasized. The Subcontractor component involves the issuance of solicitations to undertake projects that address regional needs, identified by the Technical Advisory Committee. The Technology Transfer component includes the development of nontechnical biomass energy publications and reports by Council staff and contractors, and the dissemination of information at conferences, workshops and other events

  18. 78 FR 46331 - Biomass Research and Development Technical Advisory Committee

    Science.gov (United States)

    2013-07-31

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Biomass... for candidates to fill vacancies on the Biomass Research and Development Technical Advisory Committee...: http://biomassboard.gov/committee/committee.html . SUPPLEMENTARY INFORMATION: The Biomass Research...

  19. Aktuelles aus der Forschung mit menschlichen embryonalen Stammzellen (Mit dem Jahresbericht 2004 der Zentralen Ethikkommission für Stammzellenforschung

    Directory of Open Access Journals (Sweden)

    Beier HM

    2005-01-01

    Full Text Available Im internationalen Diskurs über die Forschung mit menschlichen embryonalen Stammzellen und die Perspektiven, regenerative Therapien zu entwickeln, fanden sich in jüngster Zeit bemerkenswerte Beiträge, auf die wir hier zurückgreifen. In den aufstrebenden Forschungsnationen Südkorea, Taiwan, Singapur und China läuft ein enormer Wettbewerb um die umfangreichsten Forschungsressourcen und die Führung in der embryonalen Stammzellforschung ab. In Europa und in den USA investieren Wissenschaftler Zeit, Forschungsmittel und intellektuelle Kapazität in die Suche nach Wegen, humane embryonale Stammzellen herzustellen, ohne menschliche Eizellen und Embryonen für diese Verfahren opfern zu müssen. In Deutschland finden solche Bemühungen ein positives Echo, weil das Gesetz es verbietet, embryonale Stammzellen aus verwaisten Blastozysten, sog. überzähligen Embryonen, herzustellen. Dem Stammzellgesetz gemäß kann in Deutschland nur unter Ausnahmebedingungen an menschlichen embryonalen Stammzellen geforscht werden. Wissenschaftler dürfen nach Prüfung und Genehmigung eines speziellen Projektantrages durch das Robert-Koch-Institut menschliche embryonale Stammzell-Linien von bestimmten, lizensierten, ausländischen Herstellern importieren. Allerdings müssen diese Zell-Linien vor dem Stichtag, dem 1.1.2002, hergestellt worden sein. Die Zentrale Ethik-Kommission für Stammzellenforschung (ZES, die das Robert-Koch-Institut im Auftrag der Bundesregierung berät, berichtet jedes Jahr über ihre Arbeit. Im zweiten Teil dieses Artikels wird mit freundlicher Genehmigung des Bundesministeriums für Gesundheit und Soziale Sicherheit der ZES-Jahresbericht 2004 veröffentlicht.

  20. Environment and cancer as seen by the population of Austria; Umwelt und Krebs aus der Sicht der oesterreichischen Bevoelkerung

    Energy Technology Data Exchange (ETDEWEB)

    Wallner, P.; Haidinger, G. [Vienna Univ. (Austria). Inst. fuer Krebsforschung

    1999-04-01

    The public perception of the importance of environmental factors for carcinogenesis was investigated in a representative sample of Austrians (n=2073) who in 1995 were {>=} 15 years of age. Results show that about 60% of the respondents attribute great importance to environmental pollution as a cause for cancer development. Only smoking ranks higher. Approximately 56% of the respondents rate toxic agents in the workplace to be of great importance. In the case of pesticide residues this is true for 50% and in the case of passive smoking for 44%. High voltage power lines, `earth rays` and `water veins` are rated to be of great importance by about 25% of the respondents. The ratings of women and men do not differ except for the last two esoteric factors, with women giving more importance to them. The survey shows that the role of environmental factors in cancer development is overestimated. A better information of the public about the various cancer risks seems to be necessary. It should be based on the recommendations concerning risk communication, risk didactics and risk comparisons. (orig.) [Deutsch] Mit der vorliegenden Untersuchung sollte erhoben werden, welche Bedeutung aus Sicht der oesterreichischen Bevoelkerung Umweltfaktoren bei der Krebsentstehung zukommt. Im Rahmen der Oesterreichischen Krebsumfrage 1995 wurde eine repraesentative Stichprobe der Bevoelkerung {>=} 15 Jahre (n=2073) befragt. Rund 60% der Respondenten messen der Umweltverschmutzung grosse Bedeutung fuer die Krebsentstehung zu, sie wird damit nach dem Rauchen als wichtigster Faktor angesehen. Die Schadstoffbelastung am Arbeitsplatz hat fuer 56% der Befragten grosse Bedeutung, Pestizide in Lebensmitteln fuer 50% und Passivrauchen fuer 44%. Jeweils ungefaehr 25% der Respondenten messen Hochspannungsleitungen, Erdstrahlen und Wasseradern grosse Wichtigkeit zu. Lediglich Erdstrahlen und Wasseradern haben fuer Frauen groessere Bedeutung als fuer Maenner. Die Ergebnisse der Befragung zeigen, dass

  1. Preprocessing Moist Lignocellulosic Biomass for Biorefinery Feedstocks

    Energy Technology Data Exchange (ETDEWEB)

    Neal Yancey; Christopher T. Wright; Craig Conner; J. Richard Hess

    2009-06-01

    Biomass preprocessing is one of the primary operations in the feedstock assembly system of a lignocellulosic biorefinery. Preprocessing is generally accomplished using industrial grinders to format biomass materials into a suitable biorefinery feedstock for conversion to ethanol and other bioproducts. Many factors affect machine efficiency and the physical characteristics of preprocessed biomass. For example, moisture content of the biomass as received from the point of production has a significant impact on overall system efficiency and can significantly affect the characteristics (particle size distribution, flowability, storability, etc.) of the size-reduced biomass. Many different grinder configurations are available on the market, each with advantages under specific conditions. Ultimately, the capacity and/or efficiency of the grinding process can be enhanced by selecting the grinder configuration that optimizes grinder performance based on moisture content and screen size. This paper discusses the relationships of biomass moisture with respect to preprocessing system performance and product physical characteristics and compares data obtained on corn stover, switchgrass, and wheat straw as model feedstocks during Vermeer HG 200 grinder testing. During the tests, grinder screen configuration and biomass moisture content were varied and tested to provide a better understanding of their relative impact on machine performance and the resulting feedstock physical characteristics and uniformity relative to each crop tested.

  2. Electricity from biomass: A development strategy

    Science.gov (United States)

    1992-04-01

    The purpose of this document is to review the current status of biomass power technology and to evaluate the future directions for development that could significantly enhance the contribution of biomass power to U.S. production of electricity. This document reviews the basic principles of biomass electric systems, the previous contributions of industry and the National Biomass Energy Programs to technology development, and the options for future technology development. It discusses the market for biomass electric technology and future needs for electric power production to help establish a market-oriented development strategy. It projects trends in the performance and cost of the technology and examines the changing dynamics of the power generation market place to evaluate specific opportunities for biomass power development. In a separate document, the Biomass Power Program Five Year R&D Plan, the details of schedules, funding, and roles of participating R&D organizations within the R&D program funded by the U.S. Department of Energy (DOE) are presented. In evaluating the future directions for research and development, two cases are examined.

  3. Biomass energy potential in Brazil. Country study

    International Nuclear Information System (INIS)

    The present paper was prepared as a country study about the biomass potential for energy production in Brazil. Information and analysis of the most relevant biomass energy sources and their potential are presented in six chapters. Ethanol fuel, sugar-cane bagasse, charcoal, vegetable oil, firewood and other biomass-derived fuels are the objects of a historical review, in addition to the presentation of state-of-the-art technologies, economic analysis and discussion of relevant social and environmental issues related to their production and use. Wherever possible, an evaluation, from the available sources of information and based on the author's knowledge, is performed to access future perspectives of each biomass energy source. Brazil is a country where more than half of the energy consumed is provided from renewable sources of energy, and biomass provides 28% of the primary energy consumption. Its large extension, almost all located in the tropical and rainy region, provides an excellent site for large-scale biomass production, which is a necessity if biomass is to be used to supply a significant part of future energy demand. Even so, deforestation has occurred and is occurring in the country, and the issue is discussed and explained as mainly the result of non-energy causes or the use of old and outdated technologies for energy production. (author)

  4. The regional environmental impact of biomass production

    Energy Technology Data Exchange (ETDEWEB)

    Graham, R.L.

    1994-09-01

    The objective of this paper is to present a broad overview of the potential environmental impacts of biomass energy from energy crops. The subject is complex because the environmental impact of using biomass for energy must be considered in the context of alternative energy options while the environmental impact of producing biomass from energy crops must be considered in the context of the alternative land-uses. Using biomass-derived energy can reduce greenhouse gas emissions or increase them; growing biomass energy crops can enhance soil fertility or degrade it. Without knowing the context of the biomass energy, one can say little about its specific environmental impacts. The primary focus of this paper is an evaluation of the environmental impacts of growing energy crops. I present an approach for quantitatively evaluating the potential environmental impact of growing energy crops at a regional scale that accounts for the environmental and economic context of the crops. However, to set the stage for this discussion, I begin by comparing the environmental advantages and disadvantages of biomass-derived energy relative to other energy alternatives such as coal, hydropower, nuclear power, oil/gasoline, natural gas and photovoltaics.

  5. Public beliefs that may affect biomass development

    International Nuclear Information System (INIS)

    The Tennessee River chip mill controversy involves the expansion of the pulp and paper industry rather than the biomass energy industry; however, the concerns expressed by environmentalists are likely to be the same for biomass projects that propose use of privately-owned land. It may be incorrect to assume that private landowners will have more flexibility in forest management techniques than public agencies. In fact, when faced with a potentially large new demand source for wood, environmentalists will try to stop the project while pushing for stringent regulation of harvesting. This paper describes and analyzes beliefs about forest management (related to biomass energy) taken from the 1,200 letters and 200 public hearing statements received by TVA on the chip mill environmental impact statement. The chip mill controversy suggests that there is a potential for strong coalitions to form to stop new biomass demand sources. As much as possible, the biomass industry will need to anticipate and address land management issues. New concepts such as landscape ecology and ecosystem management should be considered. Even so, increased use of non-dedicated biomass resources will require more public acceptance of the concept that ecosystems and their biomass resources can tolerate increased levels of management

  6. Simulation of Biomass Accumulation Pattern in Vapor-Phase Biofilters.

    Science.gov (United States)

    Xi, Jin-Ying; Hu, Hong-Ying; Zhang, Xian

    2012-06-01

    Existence of inert biomass and its impact on biomass accumulation patterns and biofilter performance were investigated. Four biofilters were set up in parallel to treat gaseous toluene. Each biofilter operated under different inlet toluene loadings for 100 days. Two microbial growth models, one with an inert biomass assumption and the other without, were established and compared. Results from the model with the inert biomass assumption showed better agreement with the experimental data than those based on the model without the inert biomass assumption thus verifying that inert biomass accumulation cannot be ignored in the long-term operation of biofilters. According to the model with an inert biomass assumption, the ratio of active biomass to total biomass will decrease and the inert biomass will become dominant in total biomass after a period of time. Filter bed structure simulation results showed that the void fraction is more sensitive to biomass accumulation than the specific surface area. The final void fraction of the biofilters with the highest inlet toluene loading is only 67% of its initial level while the final specific surface area is 82%. Identification and quantification of inert biomass will give a better understanding of biomass accumulation in biofilters and will result in a more exact simulation of biomass change during long-term operations. Results also indicate that an ideal biomass control technique should be able to remove most inert biomass while simultaneously preserving as much active biomass as possible.

  7. EERC Center for Biomass Utilization 2005

    Energy Technology Data Exchange (ETDEWEB)

    Zygarlicke, C J; Schmidt, D D; Olson, E S; Leroux, K M; Wocken, C A; Aulich, T A; WIlliams, K D

    2008-07-28

    Biomass utilization is one solution to our nation’s addiction to oil and fossil fuels. What is needed now is applied fundamental research that will cause economic technology development for the utilization of the diverse biomass resources in the United States. This Energy & Environmental Research Center (EERC) applied fundamental research project contributes to the development of economical biomass utilization for energy, transportation fuels, and marketable chemicals using biorefinery methods that include thermochemical and fermentation processes. The fundamental and basic applied research supports the broad scientific objectives of the U.S. Department of Energy (DOE) Biomass Program, especially in the area of developing alternative renewable biofuels, sustainable bioenergy, technologies that reduce greenhouse gas emissions, and environmental remediation. Its deliverables include 1) identifying and understanding environmental consequences of energy production from biomass, including the impacts on greenhouse gas production, carbon emission abatement, and utilization of waste biomass residues and 2) developing biology-based solutions that address DOE and national needs related to waste cleanup, hydrogen production from renewable biomass, biological and chemical processes for energy and fuel production, and environmental stewardship. This project serves the public purpose of encouraging good environmental stewardship by developing biomass-refining technologies that can dramatically increase domestic energy production to counter current trends of rising dependence upon petroleum imports. Decreasing the nation’s reliance on foreign oil and energy will enhance national security, the economy of rural communities, and future competitiveness. Although renewable energy has many forms, such as wind and solar, biomass is the only renewable energy source that can be governed through agricultural methods and that has an energy density that can realistically compete with

  8. Praxisbefragung zur Aminosäurelücke und praktische Möglichkeiten zur Verbesserung der Eiweißversorgung der Monogastrier in der Fütterung im Ökologischen Landbau

    OpenAIRE

    Witten, Stephanie; Paulsen, Hans Marten; Weißmann, Friedrich; Bussemas, Ralf

    2014-01-01

    Gemäß EU Verordnung 834/2007 (EG-Öko-Verordnung), Artikel 22, Abs. 2 (b) und EU Verordnung 889/2008 (Durchführungsverordnung), Artikel 43 dürfen Eiweißfuttermittel aus nicht-ökologischer Herkunft bis 2014 bis zu einem Höchstanteil von 5% der Trockenmasse der Futtermittel landwirtschaftlicher Herkunft in der Jahresration für Schweine und Geflügel eingesetzt werden, wenn eine ausschließliche Versorgung mit Eiweißfuttermitteln aus ökologischer Erzeugung nicht möglich ist. Diese Ausnahmegenehmigu...

  9. [Low temperature plasma technology for biomass refinery].

    Science.gov (United States)

    Fu, Xiaoguo; Chen, Hongzhang

    2014-05-01

    Biorefinery that utilizes renewable biomass for production of fuels, chemicals and bio-materials has become more and more important in chemical industry. Recently, steam explosion technology, acid and alkali treatment are the main biorefinery treatment technologies. Meanwhile, low temperature plasma technology has attracted extensive attention in biomass refining process due to its unique chemical activity and high energy. We systemically summarize the research progress of low temperature plasma technology for pretreatment, sugar platflow, selective modification, liquefaction and gasification in biomass refinery. Moreover, the mechanism of low temperature plasma in biorefinery and its further development were also discussed.

  10. Temperature Modelling of the Biomass Pretreatment Process

    DEFF Research Database (Denmark)

    Prunescu, Remus Mihail; Blanke, Mogens; Jensen, Jakob M.;

    2012-01-01

    In a second generation biorefinery, the biomass pretreatment stage has an important contribution to the efficiency of the downstream processing units involved in biofuel production. Most of the pretreatment process occurs in a large pressurized thermal reactor that presents an irregular temperature...... distribution. Therefore, an accurate temperature model is critical for observing the biomass pretreatment. More than that, the biomass is also pushed with a constant horizontal speed along the reactor in order to ensure a continuous throughput. The goal of this paper is to derive a temperature model...

  11. Biomass Indirect Liquefaction Strategy Workshop Summary Report

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2014-07-01

    This report is based on the proceedings of the U.S. Department of Energy Bioenergy Technologies Office Biomass Indirect Liquefaction Strategy Workshop. The workshop, held March 20–21, 2014, in Golden, Colorado, discussed and detailed the research and development needs for biomass indirect liquefaction. Discussions focused on pathways that convert biomass-based syngas (or any carbon monoxide, hydrogen gaseous stream) to liquid intermediates (alcohols or acids) and further synthesize those intermediates to liquid hydrocarbons that are compatible as either a refinery feed or neat fuel.

  12. Upgrading Fuel Properties of Biomass by Torrefaction

    DEFF Research Database (Denmark)

    Shang, Lei; Holm, Jens Kai

    the heating value and mass loss, it was found that wheat straw contained less heating value on mass basis than the other two fuels, but the fraction of energy retained in the torrefied sample as a function of mass loss was very similar for all three biomass. Gas products formed during torrefaction of three...... biomass were detected in situ by coupling mass spectrometer with a thermogravimetric analyzer (TGA). The main components were water, carbon monoxide, formic acid, formaldehyde, methanol, acetic acid, carbon dioxide, and methyl chloride. The cumulative releases of gas products from three biomass fuels...

  13. Biomass structure of exotic invasive plant Galinsona parviflora

    Institute of Scientific and Technical Information of China (English)

    Shuyan QI; Wenduo XU; Yan WEN

    2008-01-01

    Galinsona parviflora (Asteraceae) is a wide-spread annual weed that is invasive,colonizing new ground where it is able to persist.We studied the bio-mass structure of the G.Parviflora population at the module level by using the methods of field plot invest-igation and weighing at 10 sample plots.Modular bio-mass was calculated and used for analysis of relation-ships between various modules.The results show that there was a positive correlation between plant height and modular biomass,between stem biomass and root biomass,stem biomass and capitulum biomass,above-ground biomass and underground biomass,and lastly,stem biomass and leaf biomass.The preferred model which measured all the relationships was a power func-tion model with absolute coefficients(R2) ranging from 0.6303 to 0.9782.

  14. Butanol production from renewable biomass by clostridia.

    Science.gov (United States)

    Jang, Yu-Sin; Malaviya, Alok; Cho, Changhee; Lee, Joungmin; Lee, Sang Yup

    2012-11-01

    Global energy crisis and limited supply of petroleum fuels have rekindled the worldwide focus towards development of a sustainable technology for alternative fuel production. Utilization of abundant renewable biomass offers an excellent opportunity for the development of an economical biofuel production process at a scale sufficiently large to have an impact on sustainability and security objectives. Additionally, several environmental benefits have also been linked with the utilization of renewable biomass. Butanol is considered to be superior to ethanol due to its higher energy content and less hygroscopy. This has led to an increased research interest in butanol production from renewable biomass in recent years. In this paper, we review the various aspects of utilizing renewable biomass for clostridial butanol production. Focus is given on various alternative substrates that have been used for butanol production and on fermentation strategies recently reported to improve butanol production. PMID:22939593

  15. CFD Studies on Biomass Thermochemical Conversion

    Directory of Open Access Journals (Sweden)

    Lifeng Yan

    2008-06-01

    Full Text Available Thermochemical conversion of biomass offers an efficient and economically process to provide gaseous, liquid and solid fuels and prepare chemicals derived from biomass. Computational fluid dynamic (CFD modeling applications on biomass thermochemical processes help to optimize the design and operation of thermochemical reactors. Recent progression in numerical techniques and computing efficacy has advanced CFD as a widely used approach to provide efficient design solutions in industry. This paper introduces the fundamentals involved in developing a CFD solution. Mathematical equations governing the fluid flow, heat and mass transfer and chemical reactions in thermochemical systems are described and sub-models for individual processes are presented. It provides a review of various applications of CFD in the biomass thermochemical process field.

  16. Sustainable Biofuels from Forests: Woody Biomass

    Directory of Open Access Journals (Sweden)

    Edwin H. White

    2011-11-01

    Full Text Available The use of woody biomass feedstocks for bioenergy and bioproducts involves multiple sources of material that together create year round supplies. The main sources of woody biomass include residues from wood manufacturing industries, low value trees including logging slash in forests that are currently underutilized and dedicated short-rotation woody crops. Conceptually a ton of woody biomass feedstocks can replace a barrel of oil as the wood is processed (refined through a biorefinery. As oil is refined only part of the barrel is used for liquid fuel, e.g., gasoline, while much of the carbon in oil is refined into higher value chemical products-carbon in woody biomass can be refined into the same value-added products.

  17. Biomass Thermochemical Conversion Program: 1986 annual report

    Energy Technology Data Exchange (ETDEWEB)

    Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

    1987-01-01

    Wood and crop residues constitute a vast majority of the biomass feedstocks available for conversion, and thermochemical processes are well suited for conversion of these materials. Thermochemical conversion processes can generate a variety of products such as gasoline hydrocarbon fuels, natural gas substitutes, or heat energy for electric power generation. The US Department of Energy is sponsoring research on biomass conversion technologies through its Biomass Thermochemical Conversion Program. Pacific Northwest Laboratory has been designated the Technical Field Management Office for the Biomass Thermochemical Conversion Program with overall responsibility for the Program. This report briefly describes the Thermochemical Conversion Program structure and summarizes the activities and major accomplishments during fiscal year 1986. 88 refs., 31 figs., 5 tabs.

  18. 2011 Biomass Program Platform Peer Review. Infrastructure

    Energy Technology Data Exchange (ETDEWEB)

    Lindauer, Alicia [Office of Energy Efficiency and Renewable Energy (EERE), Washington, DC (United States)

    2012-02-01

    This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the 2011 U.S. Department of Energy Biomass Program’s Infrastructure Platform Review meeting.

  19. Understanding Ionic Liquid Pretreatment of Lignocellulosic Biomasses

    Science.gov (United States)

    Pretreatment of biomass is essential for breaking apart highly ordered and crystalline plant cell walls and loosening the lignin and hemicellulose conjugation to cellulose microfibrills, thereby facilitating enzyme accessibility and adsorption and reducing costs of downstream saccharification proces...

  20. Assessment of Biomass Resources in Afghanistan

    Energy Technology Data Exchange (ETDEWEB)

    Milbrandt, A.; Overend, R.

    2011-01-01

    Afghanistan is facing many challenges on its path of reconstruction and development. Among all its pressing needs, the country would benefit from the development and implementation of an energy strategy. In addition to conventional energy sources, the Afghan government is considering alternative options such as energy derived from renewable resources (wind, solar, biomass, geothermal). Biomass energy is derived from a variety of sources -- plant-based material and residues -- and can be used in various conversion processes to yield power, heat, steam, and fuel. This study provides policymakers and industry developers with information on the biomass resource potential in Afghanistan for power/heat generation and transportation fuels production. To achieve this goal, the study estimates the current biomass resources and evaluates the potential resources that could be used for energy purposes.

  1. Raw material and market for biomass fuel

    International Nuclear Information System (INIS)

    The report from a conference deals with raw material and market relations for biomass fuel in Norway. The proceedings cover themes like requirements concerning quality and purity, supply of raw materials, supply and production of chips, supply and market for industrial waste and wood waste, supply of raw materials and market relations for pellets, practical experience from a pelletizing plant, use of source selected paper as a biomass fuel, use of bio-carbon in the ferro-alloy industry, biomass fuel and waste in the cement industry - technical requirements and experience of utilization, processed biomass fuel from wastes - possible niches of marketing, and evaluation of a bio-energy project. 9 figs., 12 tabs

  2. 2011 Biomass Program Platform Peer Review. Sustainability

    Energy Technology Data Exchange (ETDEWEB)

    Eng, Alison Goss [Office of Energy Efficiency and Renewable Energy (EERE), Washington, DC (United States)

    2012-02-01

    This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the 2011 U.S. Department of Energy Biomass Program’s Sustainability Platform Review meeting.

  3. 2011 Biomass Program Platform Peer Review: Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Haq, Zia [Office of Energy Efficiency and Renewable Energy (EERE), Washington, DC (United States)

    2012-02-01

    This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the 2011 U.S. Department of Energy Biomass Program’s Analysis Platform Review meeting.

  4. 2011 Biomass Program Platform Peer Review: Algae

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Joyce [Office of Energy Efficiency and Renewable Energy (EERE), Washington, DC (United States)

    2012-02-01

    This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the 2011 U.S. Department of Energy Biomass Program’s Algae Platform Review meeting.

  5. 2011 Biomass Program Platform Peer Review: Feedstock

    Energy Technology Data Exchange (ETDEWEB)

    McCann, Laura [Office of Energy Efficiency and Renewable Energy (EERE), Washington, DC (United States)

    2012-02-01

    This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the 2011 U.S. Department of Energy Biomass Program’s Feedstock Platform Review meeting.

  6. Transkulturelle Unterschiede bei somatoformer Schmerzstörung - eine Vergleichsstudie von Patienten mit Herkunft aus dem ehemaligen Jugoslawien und Österreich

    Directory of Open Access Journals (Sweden)

    Aigner M

    2006-01-01

    Full Text Available Transkulturelle Faktoren dürfen bei der somatoformen Schmerzstörung nicht außer acht gelassen werden. Ziel dieser Untersuchung ist es, diese Unterschiede zwischen Patienten aus dem ehemaligen Jugoslawien und Österreich bei anhaltender somatoformer Schmerzstörung näher zu beschreiben. Methode: In einem Case-Control-Design wurden 25 konsekutive Patienten an der Verhaltensmedizinischen Schmerzambulanz der Universitätsklinik für Psychiatrie, Medizinische Universität Wien, mit "österreichischem" Hintergrund (8 Frauen, Alter: 48,2 ± 10,4 Jahre mit 25 alters- (± 2 Jahre und geschlechtsgematchten Patienten aus dem ehemaligen Jugoslawien (8 Frauen, Alter: 48,0 ± 10,0 Jahre verglichen. Die Untersuchung mittels Schmerzfragebögen und Fragebögen (Beck-Depressionsinventar [BDI], Whiteley-Index, WHO-QoL-Bref und das strukturierte Interview (SKID-I und SKID-II für DSM-IV erfolgten in der jeweiligen Muttersprache, d. h. Deutsch bzw. Bosnisch/Kroatisch/Serbisch. Ergebnisse: Die beiden Patientengruppen unterscheiden sich hochsignifikant hinsichtlich ihrer depressiven Symptomatik im BDI (30,4 ± 11,9 vs. 21,1 ± 12,3; p = 0,009. Auch die hypochondrischen Ängste sind in der ex-jugoslawischen Patientengruppe signifikant stärker ausgeprägt. Die Patientengruppe aus dem ehemaligen Jugoslawien erfüllt zu 100 % die Kriterien einer affektiven Störung, die österreichische Patientengruppe zu 80 % (p = 0,02. Die Patientengruppe aus dem ehemaligen Jugoslawien weist mit 48 % signifikant häufiger eine posttraumatische Belastungsstörung auf. Hinsichtlich Angststörungen und Substanzabhängigkeit (Alkohol, Nikotin, Sedativa unterscheiden sich beide Patientengruppen nicht signifikant. Im SKID-II zeigen sich bei der Patientengruppe aus dem ehemaligen Jugoslawien signifikant häufiger Cluster-A-Störungen (Schizoide/paranoide/ schizotype Persönlichkeitsstörung. Die Lebensqualität ist insgesamt bei beiden Patientengruppen deutlich eingeschränkt. Die

  7. High yielding biomass genotypes of willow (Salix spp.) show differences in below ground biomass allocation

    International Nuclear Information System (INIS)

    Willows (Salix spp.) grown as short rotation coppice (SRC) are viewed as a sustainable source of biomass with a positive greenhouse gas (GHG) balance due to their potential to fix and accumulate carbon (C) below ground. However, exploiting this potential has been limited by the paucity of data available on below ground biomass allocation and the extent to which it varies between genotypes. Furthermore, it is likely that allocation can be altered considerably by environment. To investigate the role of genotype and environment on allocation, four willow genotypes were grown at two replicated field sites in southeast England and west Wales, UK. Above and below ground biomass was intensively measured over two two-year rotations. Significant genotypic differences in biomass allocation were identified, with below ground allocation differing by up to 10% between genotypes. Importantly, the genotype with the highest below ground biomass also had the highest above ground yield. Furthermore, leaf area was found to be a good predictor of below ground biomass. Growth environment significantly impacted allocation; the willow genotypes grown in west Wales had up to 94% more biomass below ground by the end of the second rotation. A single investigation into fine roots showed the same pattern with double the volume of fine roots present. This greater below ground allocation may be attributed primarily to higher wind speeds, plus differences in humidity and soil characteristics. These results demonstrate that the capacity exists to breed plants with both high yields and high potential for C accumulation. - Highlights: • SRC willows are a source of biomass and act as carbon (C) sinks. • Biomass allocation was measured in 4 willow genotypes grown in two UK field sites. • The greatest yielding genotype had the greatest below ground biomass at both sites. • Below ground biomass allocation differed by up to 10% between genotypes and 94% between sites. • Environment e.g. wind

  8. Direct conversion of algal biomass to biofuel

    Science.gov (United States)

    Deng, Shuguang; Patil, Prafulla D; Gude, Veera Gnaneswar

    2014-10-14

    A method and system for providing direct conversion of algal biomass. Optionally, the method and system can be used to directly convert dry algal biomass to biodiesels under microwave irradiation by combining the reaction and combining steps. Alternatively, wet algae can be directly processed and converted to fatty acid methyl esters, which have the major components of biodiesels, by reacting with methanol at predetermined pressure and temperature ranges.

  9. The processing of biomass for direct combustion

    OpenAIRE

    TOMÁŠEK, Petr

    2013-01-01

    The aim of this work is to create an overview of the possibilities of using the biomass for energy purposes and to assess various treatment technologies of biomass for direct combustion. It was performed the consumption monitoring of pellets in a family house newly insulated and an assessment of the pellet boiler. As fuel for heating of the house were used white wood pellets made from clean wood and wood waste, without additives. For calculation the consumption of pellets and an assessment of...

  10. Appendix B - GPRA06 biomass program documentation

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2009-01-18

    This appendix discusses the assumptions and methods employed in the biomass benefits analysis that is part of the fiscal year 2006 GPRA benefits analysis for all of the Department of Energy’s Energy Efficiency and Renewable Energy (EERE) research and deployment programs. The biomass benefits analysis focuses on the benefits of future achievements by the program and excludes retrospective benefits and benefits resulting from industry’s own initiative and funding.

  11. Hydrothermal pretreatments of macroalgal biomass for biorefineries

    DEFF Research Database (Denmark)

    Ruiz, Héctor A.; Rodríguez-Jasso, Rosa M.; Aguedo, Mario;

    2015-01-01

    in accordance with the integrated biorefineries. Furthermore, biorefinery concept requires processes that allow efficient utilization of all components of the biomass. The pretreatment step in a biorefinery is often based on hydrothermal principles of high temperatures in aqueous solution. Therefore......ecently, macroalgal biomass is gaining wide attention as an alternative in the production of biofuels (as bioetanol and biogas) and compounds with high added value with specific properties (antioxidants, anticoagulants, anti–inflammatories) for applications in food, medical and energy industries...

  12. Process for the treatment of lignocellulosic biomass

    Energy Technology Data Exchange (ETDEWEB)

    Dale, Bruce E.

    2014-07-08

    A process for the treatment of biomass to render structural carbohydrates more accessible and/or digestible using concentrated ammonium hydroxide with or without anhydrous ammonia addition, is described. The process preferably uses steam to strip ammonia from the biomass for recycling. The process yields of monosaccharides from the structural carbohydrates are good, particularly as measured by the enzymatic hydrolysis of the structural carbohydrates. The monosaccharides are used as animal feeds and energy sources for ethanol production.

  13. A review on gasification of biomass

    Energy Technology Data Exchange (ETDEWEB)

    Kirubakaran, V. [Rural Technology Centre, Gandhigram Rural University, Gandhigram 624302, Tamil Nadu (India); Sivaramakrishnan, V. [Department of Mechanical Engineering, Saranathan College of Engineering, Tiruchirapalli 620012, Tamil Nadu (India); Nalini, R. [Department of Renewable Energy, Periyar Maniyammai College of Technology for Women, Vallam 613403, Tamil Nadu (India); Sekar, T. [Department of Petrochemical Technology, Anna University, Tiruchirappalli, Tamil Nadu (India); Premalatha, M.; Subramanian, P. [Centre for Energy and Environmental Science and Technology (CEESAT), National Institute of Technology, Tiruchirapalli 620015, Tamil Nadu (India)

    2009-01-15

    Studies on the effect of size, structure, environment, temperature, heating rate, composition of biomass and ash are reviewed. Based on the observations reported so far, auto-gasification of biomass by the bio-oxygen and the catalytic ash would be feasible. The auto-gasification may be explained in terms of heterogeneous catalytic reaction. Better understanding of auto-gasification is possible by further studies carrying out on the effect of heating rate on auto-gasification. (author)

  14. Biomass resilience of Neotropical secondary forests.

    Science.gov (United States)

    Poorter, Lourens; Bongers, Frans; Aide, T Mitchell; Almeyda Zambrano, Angélica M; Balvanera, Patricia; Becknell, Justin M; Boukili, Vanessa; Brancalion, Pedro H S; Broadbent, Eben N; Chazdon, Robin L; Craven, Dylan; de Almeida-Cortez, Jarcilene S; Cabral, George A L; de Jong, Ben H J; Denslow, Julie S; Dent, Daisy H; DeWalt, Saara J; Dupuy, Juan M; Durán, Sandra M; Espírito-Santo, Mario M; Fandino, María C; César, Ricardo G; Hall, Jefferson S; Hernandez-Stefanoni, José Luis; Jakovac, Catarina C; Junqueira, André B; Kennard, Deborah; Letcher, Susan G; Licona, Juan-Carlos; Lohbeck, Madelon; Marín-Spiotta, Erika; Martínez-Ramos, Miguel; Massoca, Paulo; Meave, Jorge A; Mesquita, Rita; Mora, Francisco; Muñoz, Rodrigo; Muscarella, Robert; Nunes, Yule R F; Ochoa-Gaona, Susana; de Oliveira, Alexandre A; Orihuela-Belmonte, Edith; Peña-Claros, Marielos; Pérez-García, Eduardo A; Piotto, Daniel; Powers, Jennifer S; Rodríguez-Velázquez, Jorge; Romero-Pérez, I Eunice; Ruíz, Jorge; Saldarriaga, Juan G; Sanchez-Azofeifa, Arturo; Schwartz, Naomi B; Steininger, Marc K; Swenson, Nathan G; Toledo, Marisol; Uriarte, Maria; van Breugel, Michiel; van der Wal, Hans; Veloso, Maria D M; Vester, Hans F M; Vicentini, Alberto; Vieira, Ima C G; Bentos, Tony Vizcarra; Williamson, G Bruce; Rozendaal, Danaë M A

    2016-02-11

    Land-use change occurs nowhere more rapidly than in the tropics, where the imbalance between deforestation and forest regrowth has large consequences for the global carbon cycle. However, considerable uncertainty remains about the rate of biomass recovery in secondary forests, and how these rates are influenced by climate, landscape, and prior land use. Here we analyse aboveground biomass recovery during secondary succession in 45 forest sites and about 1,500 forest plots covering the major environmental gradients in the Neotropics. The studied secondary forests are highly productive and resilient. Aboveground biomass recovery after 20 years was on average 122 megagrams per hectare (Mg ha(-1)), corresponding to a net carbon uptake of 3.05 Mg C ha(-1) yr(-1), 11 times the uptake rate of old-growth forests. Aboveground biomass stocks took a median time of 66 years to recover to 90% of old-growth values. Aboveground biomass recovery after 20 years varied 11.3-fold (from 20 to 225 Mg ha(-1)) across sites, and this recovery increased with water availability (higher local rainfall and lower climatic water deficit). We present a biomass recovery map of Latin America, which illustrates geographical and climatic variation in carbon sequestration potential during forest regrowth. The map will support policies to minimize forest loss in areas where biomass resilience is naturally low (such as seasonally dry forest regions) and promote forest regeneration and restoration in humid tropical lowland areas with high biomass resilience. PMID:26840632

  15. Bioenergy Project Development and Biomass Supply

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    Modern biomass, and the resulting useful forms of bioenergy produced from it, are anticipated by many advocates to provide a significant contribution to the global primary energy supply of many IEA member countries during the coming decades. For non-member countries, particularly those wishing to achieve economic growth as well as meet the goals for sustainable development, the deployment of modern bioenergy projects and the growing international trade in biomass-based energy carriers offer potential opportunities.

  16. Biomass equipments. The wood-fueled heating plants; Materiels pour la biomasse. Les chaudieres bois

    Energy Technology Data Exchange (ETDEWEB)

    Chieze, B. [SA Compte R, 63 - Arlanc (France)

    1997-12-31

    This paper analyzes the consequences of the classification of biomass fuels in the French 2910 by-law on the classification of biomass-fueled combustion installations. Biomass fuels used in such installations must be only wood wastes without any treatment or coating. The design of biomass combustion systems must follow several specifications relative to the fueling system, the combustion chamber, the heat exchanger and the treatment of exhaust gases. Other technical solutions must be studied for other type of wood wastes in order to respect the environmental pollution laws. (J.S.)

  17. Electricity production by advanced biomass power systems

    Energy Technology Data Exchange (ETDEWEB)

    Solantausta, Y. [VTT Energy, Espoo (Finland). Energy Production Technologies; Bridgwater, T. [Aston Univ. Birmingham (United Kingdom); Beckman, D. [Zeton Inc., Burlington, Ontario (Canada)

    1996-11-01

    This report gives the results of the Pyrolysis Collaborative Project organized by the International Energy Agency (IEA) under Biomass Agreement. The participating countries or organizations were Canada, European Community (EC), Finland, United States of America, and the United Kingdom. The overall objective of the project was to establish baseline assessments for the performance and economics of power production from biomass. Information concerning the performance of biomass-fuelled power plants based on gasification is rather limited, and even less data is available of on pyrolysis based power applications. In order to gain further insight into the potential for these technologies, this study undertook the following tasks: (1) Prepare process models to evaluate the cost and performance of new advanced biomass power production concepts, (2) Assess the technical and economic uncertainties of different biomass power concepts, (3) Compare the concepts in small scale and in medium scale production (5 - 50 MW{sub e}) to conventional alternatives. Processes considered for this assessment were biomass power production technologies based on gasification and pyrolysis. Direct combustion technologies were employed as a reference for comparison to the processes assessed in this study. Wood was used a feedstock, since the most data was available for wood conversion

  18. Preparation of gasification feedstock from leafy biomass.

    Science.gov (United States)

    Shone, C M; Jothi, T J S

    2016-05-01

    Dried leaves are a potential source of energy although these are not commonly used beside to satisfy daily energy demands in rural areas. This paper aims at preparing a leafy biomass feedstock in the form of briquettes which can be directly used for combustion or to extract the combustible gas using a gasifier. Teak (Tectona grandis) and rubber (Hevea brasiliensis) leaves are considered for the present study. A binder-assisted briquetting technique with tapioca starch as binder is adopted. Properties of these leafy biomass briquettes such as moisture content, calorific value, compressive strength, and shatter index are determined. From the study, briquettes with biomass-to-binder ratio of 3:5 are found to be stable. Higher mass percentage of binder is considered for preparation of briquettes due to the fact that leafy biomasses do not adhere well on densification with lower binder content. Ultimate analysis test is conducted to analyze the gasification potential of the briquettes. Results show that the leafy biomass prepared from teak and rubber leaves has calorific values of 17.5 and 17.8 MJ/kg, respectively, which are comparable with those of existing biomass feedstock made of sawdust, rice husk, and rice straw. PMID:26289326

  19. Biomass Resource Allocation among Competing End Uses

    Energy Technology Data Exchange (ETDEWEB)

    Newes, E.; Bush, B.; Inman, D.; Lin, Y.; Mai, T.; Martinez, A.; Mulcahy, D.; Short, W.; Simpkins, T.; Uriarte, C.; Peck, C.

    2012-05-01

    The Biomass Scenario Model (BSM) is a system dynamics model developed by the U.S. Department of Energy as a tool to better understand the interaction of complex policies and their potential effects on the biofuels industry in the United States. However, it does not currently have the capability to account for allocation of biomass resources among the various end uses, which limits its utilization in analysis of policies that target biomass uses outside the biofuels industry. This report provides a more holistic understanding of the dynamics surrounding the allocation of biomass among uses that include traditional use, wood pellet exports, bio-based products and bioproducts, biopower, and biofuels by (1) highlighting the methods used in existing models' treatments of competition for biomass resources; (2) identifying coverage and gaps in industry data regarding the competing end uses; and (3) exploring options for developing models of biomass allocation that could be integrated with the BSM to actively exchange and incorporate relevant information.

  20. BARRIER ISSUES TO THE UTILIZATION OF BIOMASS

    Energy Technology Data Exchange (ETDEWEB)

    Jay R. Gunderson; Bruce C. Folkedahl; Darren D. Schmidt; Greg F. Weber; Christopher J. Zygarlicke

    2002-05-01

    The Energy & Environmental Research Center (EERC) is conducting a project to examine the fundamental issues limiting the use of biomass in small industrial steam/power systems in order to increase the future use of this valuable domestic resource. Specifically, the EERC is attempting to elucidate the ash-related problems--grate clinkering and heat exchange surface fouling--associated with cofiring coal and biomass in grate-fired systems. Utilization of biomass in stoker boilers designed for coal can be a cause of concern for boiler operators. Boilers that were designed for low-volatile fuels with lower reactivities can experience damaging fouling when switched to higher-volatile and more reactive lower-rank fuels, such as when cofiring biomass. Higher heat release rates at the grate can cause more clinkering or slagging at the grate because of higher temperatures. Combustion and loss of volatile matter can start too early with biomass fuels compared to design fuel, vaporizing alkali and chlorides which then condense on rear walls and heat exchange tube banks in the convective pass of the boiler, causing noticeable increases in fouling. In addition, stoker-fired boilers that switch to biomass blends may encounter new chemical species such as potassium sulfates and various chlorides in combination with different flue gas temperatures because of changes in fuel heating value, which can adversely affect ash deposition behavior.