Purification of aqueous sodium chloride solution

Details Purification of aqueous sodium chloride solution Purification of aqueous sodium chloride solution

1978-04-14

1979-05-22

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204128, 423140, 423158, 423164, 423165, 423166, C25B 116, C25B 126

Patent

active

041558200

ABSTRACT:
An aqueous sodium chloride solution for use in production of caustic soda in an electrolytic cell having a cation exchange membrane is purified by adding to said solution a chemical reagent for precipitation separation of impurities remove silica through co-precipitation with a slurry of the precipitates of impurities which are circulated through said solution.

REFERENCES:
patent: 3970528 (1976-07-01), Zirngiebl et al.
patent: 4073706 (1978-02-01), Nagy
patent: 4078978 (1978-03-01), Zirngiebl

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