Sample records for ACEITES RESIDUALES (waste oils)
from WorldWideScience.org

Sample records 1 - 14 shown.



3

Rheological Behaviour of Coal Modified by Waste Plastics and Lubricating-Oils

Melendi Espina, Sonia; Díez Díaz-Estébanez, M.ª Antonia; Álvarez García, Ramón; Castro, Miguel; Steel, Karen

The aim of this work is to study the interactions between a coking coal and two types of wastes: plastics from municipal wastes (single and mixed) and lubricating-oils coming from the iron and steel sector. For this purpose, Gieseler plastometry, rheometry and in situ high-temperature 1H NMR spectro...

DRIVER (Spanish)

5

Obtención y aplicaciones de hidrolizados protéicos

Vioque, Javier; Clemente, Alfonso; Pedroche, Justo; Yust, María del Mar; Millán, Francisco
2001-04-30

Digital.CSIC (Spain)

6
8

Manejo de hábitat y microorganismos para degradar efluentes industriales: un estudio de caso/ Managing habitat and microorganisms for degrading industrial effluents: a study case

Abril, Adriana
2005-06-01

Resumen en español Se evaluó la eficiencia de prácticas de manejo de hábitat y microorganismos para degradar efluentes en una industria metalúrgica de Córdoba, Argentina. Para optimizar la actividad de organismos del agua, el suelo y la rizosfera de las plantas, se manejaron tres hábitats: acuático, de humedales y agrícola. Las prácticas fueron: introducción de vegetación palustre y terrestre, aireación del agua, laboreos, remoción de sedimentos e inoculación con bacterias sel (mas) eccionadas. Se evaluaron los siguientes parámetros: pH y contenido de bacterias en el agua, y contenido de aceites, Cr y Zn en los sedimentos, suelo y napa freática. El pH registrado fue siempre muy elevado (entre 8.4 y 10.9), mientras que la cantidad de bacterias descomponedoras aumentó hasta valores que fluctuaron entre log 3.6 y 8.9/ml. No se observó aumento en la población microbiana después de la inoculación. Los sedimentos presentaron elevado pH, Zn y Cr y escaso contenido de aceites. No se detectaron estos contaminantes ni en el suelo ni en la napa. Mediante el manejo de hábitat se logró una eficiente degradación de los aceites del efluente y una ausencia total de lixiviados, barros y agua remanente. Resumen en inglés The efficiency of a treatment for industrial effluents based on a combination of habitat and microbial population management was tested in a metallurgic plant in Córdoba, Argentina. Effluents (between 30 - 40 m³ day) were originated from a) zinc process (20%), b) engine washing (70%), and c) sewage (10%). The treatment process included a combination of three managed habitats: aquatic (pond), wetland (flooding plots), and agricultural land (flooding and crop plots). The (mas) three habitats were managed to optimize the degrading activity of water, soil, and phyllosphere microorganisms. Management practices included introduction of terrestrial and aquatic vegetation, water aeration, sediment removal, and inoculation of selected native microorganisms. Efficiency was assessed through five years using the following parameters: a) monthly: water pH and abundance of degrading and coliform bacteria in the pond b) yearly: Zn, Cr and mineral oil content in the underground water (9 m deep), sediments in the ponds and organic matter in the subsoil (1 and 2 m deep). Water pH was permanently high (8.4 -10.9), whereas abundance of degrading microorganisms was very low at the beginning (log 1.2/ ml) increasing through the following years and with fluctuations of between log 3.6 and 8.9/ ml. No increase in bacterial abundance was detected after inoculation. Coliform bacteria were scarcely observed. High concentration of Zn (6.48 - 7.08 mg/kg) and Cr (0.19 - 0.50 mg/kg) and low mineral oil content (0.23 -1.01 mg/kg) were detected in the pond´s sediments. None of these components were detected in underground water and subsoil. Habitat management allowed an efficient degradation of sewage and mineral oils. The system does not produce waste material such as sludge, water, nor underground water pollution.

Scientific Electronic Library Online (Spanish)

9

Improvement of protein extraction from sunflower meal by hydrolysis with alcalase

Yust, María del Mar; Pedroche, Joaquín; Megías, Cristina; Girón-Calle, Julio; Alaíz Barragán, Manuel; Millán, Francisco; Vioque, Javier
2003-12-30

Digital.CSIC (Spain)

10

Experimental prediction of the agglomeration capability of waste vegetable oils (WVO) in relation to the recovery of coal from coal fines cleaning wastes (CFCW)

Fernández Valdés, Adolfo; González Azpiroz, M.ª Dolores; Gutiérrez Blanco, Carlos; García Suárez, Ana Beatriz

6 pages, 2 figures, 3 tables.-- Available online Dec 28, 2006. | Coal fines cleaning wastes (CFCW) were agglomerated with samples of a vegetable oil heated at 150 °C for 1–15 days. An agglomeration efficiency index (AEI) which variation depends on the oil agglomeration capability was calculated. Goo...

DRIVER (Spanish)

11

Detection of the presence of used frying oil as raw material in biodiesel production

Ruiz Méndez, M.ª Victoria; Liotta, A.; Marmesat, Susana; Dobarganes, M.ª Carmen
2008-12-30

Digital.CSIC (Spain)