Operation and regeneration of permselective ion- exchange...

Details Operation and regeneration of permselective ion- exchange... Operation and regeneration of permselective ion- exchange...

C - Chemistry, Metallurgy

25

B

204/57.3

C25B 1/46 (2006.01) C25B 13/00 (2006.01) C25B 15/00 (2006.01)

Patent

CA 1195649

-37- ABSTRACT OF THE DISCLOSURE Methods of regeneration of permselective ion-exchange membranes for an electrolytic cell are greatly improved when the cell is fed a brine which contains little or no carbon dioxide, carbonate anions or bicarbonate anions during normal electrolysis and wherein the membrane regeneration is conducted with a liquid solution capable of dissolving multivalent cation compounds by contacting the membrane with the solution having a pH below that of the pH of the electrolyte in contact with the membrane during normal electrolysis. -37-

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