Processes for the recovery of cyanide from aqueous thiocyanate s

Details Processes for the recovery of cyanide from aqueous thiocyanate s Processes for the recovery of cyanide from aqueous thiocyanate s

1983-10-07

1985-05-28

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

204101, 204102, 204103, 204128, C25B 100, C25B 114, C25B 122

Patent

active

045198802

ABSTRACT:
A process for the recovery of cyanide from thiocyanate. An aqueous solution containing thiocyanate is introduced into an electrochemical reactor. The reactor is activated for an appropriate time period while the pH of the solution is maintained in the range of 1 to 4. The cyanide formed can be recovered, in various ways including recovery as hydrocyanic acid. Alternatively, an aqueous solution containing thiocyanate is introduced into a suitable electrochemical reactor. The reactor is activated for an appropriate time period while the pH of the solution is maintained in the range of 10 to 12 to produce relatively harmless products, for example, cyanate, ammonia, carbon dioxide and nitrogen.

REFERENCES:
patent: 2260881 (1941-10-01), Beier
patent: 2737298 (1956-03-01), Hendel

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