Continuous manufacture of sodium dithionite solutions by cathodi

Details Continuous manufacture of sodium dithionite solutions by cathodi Continuous manufacture of sodium dithionite solutions by cathodi

1977-10-05

1979-03-13

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

C25B 100

Patent

active

041441460

ABSTRACT:
Concentrated dithionite solutions are produced by cathodic reduction of an aqueous solution, containing sulfite and/or bisulfite, which is circulated by pumping. The cathode and anode chambers are separated from one another by a permselective cation exchanger membrane. The catholyte must be circulated at least 10 times per hour and the selective catholyte volume outside the cell, defined as

REFERENCES:
patent: 2193323 (1940-03-01), Nitzschke et al.
patent: 3920551 (1975-11-01), Cook et al.

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