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- Title
Cleaning of Industrial Waters Containing Cyanides by Using a Combination of Ozone and Hydrogen Peroxide.
- Authors
Krylova, L. N.; Seliverstov, A. F.; Ryabtsev, D. A.
- Abstract
We study the process of oxidation of cyanides, thiocianates, and complex cyanides by a combination of ozone with hydrogen peroxide (peroxone reagent) in model solutions and sorption tails of a gold recovery plant. We establish the kinetic dependences of the oxidation of cyanides, thiocyanates, and complex cyanides by hydrogen peroxide and ozone on the ozone–hydrogen-peroxide ratio, pH value, and the concentration of copper ions. The rate constants of the oxidation of thiocyanate by peroxone are determined and the influence of the concentration of thiocyanate on its oxidation by ozone and hydrogen peroxide is analyzed. On the basis of the accumulated results, we propose a technology of cleaning of cyanide-containing waters (peroxone process) by using a combination of ozone with hydrogen peroxide.
- Subjects
HYDROGEN peroxide; OZONE; CYANIDES; OXIDATION kinetics; COPPER ions; HYDROGEN oxidation
- Publication
Metallurgist, 2021, Vol 64, Issue 11/12, p1331
- ISSN
0026-0894
- Publication type
Article
- DOI
10.1007/s11015-021-01123-y