Membrane filtration of polymer containing solutions

Details Membrane filtration of polymer containing solutions Membrane filtration of polymer containing solutions

1998-08-25

2000-12-19

Phasge, Arun S.

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

210651, B01D 6144

Patent

active

061623407

ABSTRACT:
In a method for recovering polymers in a substantially pure form from a solution containing the polymers, the solution is first treated with a reactant (e.g. an acid, a sequestrant or a mixture of both) to form the free polymers and salts of the reactant. Second, the solution is treated to remove the salts therefrom and in a final stage the polymer solution is concentrated and the polymers recovered. The second treatment step may consist of membrane-filtration, ion-exchange or electrodialysis.

REFERENCES:
patent: 3394068 (1968-07-01), Calmon et al.
patent: 5282939 (1994-02-01), Voss
Schmidt, "Denitrification in Drinking Water" Chemical Abstracts (abstract only), Apr. 1997.

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