Sample records for pressure 1-10 bar

Sample records 1 - 1 shown.


Substâncias húmicas: sistema de fracionamento sequencial por ultrafiltração com base no tamanho molecular/ Humic substances: a sequential device for fractionation by ultrafiltration with molecular size basis

Rocha, Julio Cesar; Zara, Luiz Fabricio; Rosa, André Henrique; Sargentini Junior, Ézio; Burba, Peter

Resumo em inglês A sequential system for fractionation by ultrafiltration (SSFU) equipped with advanced membranes filters (molecular size cut-off: 5, 10, 30, 50 and 100 kDalton) of the polyethersulfone type was developed for analytical fractionation of humic substances (HS) extracted from aquatic systems or soils. The device consists of five membrane filters (Sartocon® Micro) operated by a multi-channel peristaltic pump, enabling an easy handling, working in a closed system and with simp (mais) le collection of the six obtained fractions (F1>100; F2: 100-50; F3: 50-30; F4:30-10; F5: 10-5 and F6

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