Cyanide removal from aqueous streams

Details Cyanide removal from aqueous streams Cyanide removal from aqueous streams

1984-03-08

1985-08-27

Wyse, Thomas

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210721, 210763, 210904, C02F 158

Patent

active

045376867

ABSTRACT:
The cyanide content of waste waters containing the same is removed by treatment with sulfur dioxide or an alkali or alkaline earth metal sulfite or bisulfite in the presence of excess oxygen and a metal catalyst which is perferably copper.

REFERENCES:
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patent: 4006216 (1977-02-01), Ettel et al.
patent: 4024037 (1977-05-01), Bishop et al.
patent: 4070281 (1978-01-01), Tagashira et al.
patent: 4312760 (1982-01-01), Neville
Electroplating Engineering Handbook-Third Edition.
Hydrometallurgy, 4, (1979).
Canadian Journal of Chemical Engineering, vol. 58, Oct. 1980.
Reprint from Chemtech, vol. 9, Jul. 1979, pp. 426-427.
Novel Method For Preparation of Nickel Hydroxide.
Dept. of Energy, Mines & Resourses, Report MPI(O), 73-4.
Paper entitled "Cyanide Removal From Aqueous Solutions" by J. MacLachlan.
Paper No. 8, Treatment of Gold Mill Effluents For Removal And Recovery Or Destruction of Cyanide-A Summary of Joint Projects With Six Gold Mills by G. M. Ritcey & V. M. McNamara.

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