Method of renewing a porous diaphragm having reduced permeabilit

Details Method of renewing a porous diaphragm having reduced permeabilit Method of renewing a porous diaphragm having reduced permeabilit

1977-12-20

1978-10-03

Andrews, R. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204 98, 204128, C25B 1308, C25B 1304, C25B 1500

Patent

active

041183088

ABSTRACT:
A method is provided for renewing the permeability of a porous diaphragm comprised of a synthetic fluorocarbon resin having ion exchange properties which comprises feeding an alkaline solution of an alkali metal chloride having a pH of from about 9 to about 12 to the anode compartment. A first portion of the alkaline brine passes through the porous diaphragm and a second portion contacts the porous diaphragm and is then removed from the anode compartment.

REFERENCES:
patent: 3467586 (1969-09-01), Grotheer et al.
patent: 3485730 (1969-12-01), Virgil
patent: 3971706 (1976-07-01), Hirozawa et al.
patent: 3988223 (1976-10-01), Hirozawa

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