Chromate removal from concentrated chlorate solution by chemical

Details Chromate removal from concentrated chlorate solution by chemical Chromate removal from concentrated chlorate solution by chemical

1979-09-04

1981-03-31

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

423475, 423607, 204 95, 210913, 210768, 210806, C01G 3702

Patent

active

042592976

ABSTRACT:
A method has been devised for removing hexavalent chromium from concentrated aqueous alkali metal chlorate solution by reacting the solution with an inorganic sulfur containing compound and separating divalent and trivalent chromium compounds from the solution. Alkali metal hypohalites may be simultaneously removed from the chlorate solution by reaction with excess inorganic sulfur containing compound.

REFERENCES:
patent: 3398093 (1968-08-01), Ferney
patent: 3728273 (1973-04-01), Bruen
patent: 3843769 (1974-10-01), Partridge
patent: 3896209 (1975-07-01), Fournier
patent: 3961029 (1976-06-01), Senoo
patent: 3981965 (1976-09-01), Gancy
patent: 4139460 (1979-02-01), Ghelli
Mellor, Inorganic and Theoretical Chemistry, Longmans Green & Co., N.Y., 1931, vol. XI, pp. 336, 337.

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