Removal of manganese and chloride ions from aqueous acidic zinc

Details Removal of manganese and chloride ions from aqueous acidic zinc Removal of manganese and chloride ions from aqueous acidic zinc

1981-06-08

1983-04-05

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204114, 204128, 423 50, 423500, C25C 116, C25B 126

Patent

active

043790372

ABSTRACT:
A process for removing manganese and chloride ions from an aqueous acidic sulphate solution containing zinc, manganese and chloride ions without removing a substantial amount of zinc ions from the solution includes adjusting the free acidity of the solution if necessary to at least about 0.1 molar. The solution is then treated with ozone to oxidize manganese ions to manganese dioxide, and the ozone treatment is continued after the manganese concentration has fallen to a low level to oxidize chloride ions to chlorine gas. The precipitated manganese dioxide is removed from the solution.

REFERENCES:
patent: 2577808 (1951-12-01), Pye et al.
patent: 4120941 (1978-10-01), Nowak et al.
patent: 4290866 (1981-09-01), Bolton et al.

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