Cross-flow filtration

Details Cross-flow filtration Cross-flow filtration

1983-12-29

1989-12-19

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210638, 210639, 210651, B01D 1300

Patent

active

048881155

ABSTRACT:
A process for the cross-flow filtration of a liquid comprising circulating the liquid tangential to a charge modified organic polymeric microporous filter membrane. Preferably, the membrane comprises an organic polymeric microporous filter membrane which has a micro-structure throughout the membrane and an amount of a charge modifying agent bound to substantially all of the membrance micro-structure without substantial pore size reduction or pore blockage.

REFERENCES:
patent: 3808305 (1974-04-01), Gregor
patent: 4051300 (1977-09-01), Klein et al.
patent: 4431545 (1984-02-01), Pall et al.
Dorson et al., PCTWO82/03568, published 10-28-82.
Kesting, Synthetic Polymeric Membranes, 307 pages, p. 21.

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