Method for hydrogen ion-selective electrodialysis

Details Method for hydrogen ion-selective electrodialysis Method for hydrogen ion-selective electrodialysis

1993-02-17

1994-04-05

Gorgos, Kathryn

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204301, C25B 700, B01D 6144, B01D 6146

Patent

active

053002040

ABSTRACT:
A method for hydrogen ion-selective electrodialysis, wherein from an aqueous solution containing hydrogen ions on an anode side, the hydrogen ions are selectively permitted to permeate through a membrane to a cathode side, wherein the membrane is a double layer ion exchange membrane comprising an anion exchanger layer on the anode side and a cation exchanger layer on the cathode side, and the anion exchanger layer has an ion exchange capacity of from 0.5 to 4 meq/g dry resin, a fixed ion concentration of from 1 to 10 meq/g H.sub.2 O, a thickness of from 0.1 to 150 .mu.m and an electrical resistance of at most 1 .OMEGA..multidot.cm.sup.2 as measured in a 0.5 mol/l sulfuric acid solution.

REFERENCES:
patent: 4024043 (1977-05-01), Dege et al.
patent: 4116889 (1978-09-01), Chlanda et al.
patent: 4851100 (1989-07-01), Hodgdon et al.
patent: 5128378 (1992-07-01), Sugayo et al.
patent: 5180750 (1993-01-01), Sugayo et al.

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