Electrolytic treatment of plating wastes

Details Electrolytic treatment of plating wastes Electrolytic treatment of plating wastes

1979-07-05

1980-10-07

Mack, John H.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204110, 204149, 204152, 204276, 204283, 204285, C25C 100, C02B 182, C25C 702

Patent

active

042266858

ABSTRACT:
The known method of removing heavy metal and cyanide ions from plating waste solutions wherein the solution is passed through flow-through, high surface area electrodes to precipitate heavy metal ions and to oxidize cyanide is improved through the use of a novel stationary bed dual electrode capable of reducing heavy metal and cyanide ion concentration. The process promotes economical electrolytic purification because it can be accomplished at relatively high current efficiencies. The metals removed from the solutions are recovered in a concentrated form suitable for purification.

REFERENCES:
patent: 1449462 (1923-03-01), Van Arsdale
patent: 2529237 (1950-11-01), Turner et al.
patent: 3620955 (1971-11-01), Jones
patent: 3682798 (1972-08-01), Tuppenham et al.
patent: 3954594 (1976-05-01), Recht
patent: 4006067 (1977-02-01), Gussack
patent: 4172780 (1979-10-01), Kammel et al.

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