Voltage reduction of membrane cell for the electrolysis of...

Details Voltage reduction of membrane cell for the electrolysis of... Voltage reduction of membrane cell for the electrolysis of...

C - Chemistry, Metallurgy

25

B

204/57.2

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

Patent

CA 1105876

ABSTRACT OF THE DISCLOSURE The voltage drop in a three compartment membrane cell used for the electrolysis of brine is diminished by treatment of the anolyte with acid, preferably hydrochloric acid, lowering the caustic concentration in the buffer zone and decreasing the current density for a period of time, during which the membrane adjacent to the anolyte is rejuvenated, and then resuming normal operations. In a similar manner the voltage drop in a two compartment membrane cell may be reduced, with the lowering of the caustic concentration being effected in the catholyte, preferably by dilution with water.

237733

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