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- Article name
- EXTRACTION OF CATIONS OF NICKEL AND ZINC FROM THE SOLUTIONS CONTAINING HYPOPHOSPHITE OR CYANIDE ANIONS
- Authors
- Turaev D. Ju., , , ,
- Keywords
- nickel and zinc cations / hypophosphite and cyanide anions / dioxide-lead titanium anode / electrolysis without membranes
- Year
- 2009 Issue 3 Pages 66 - 71
- Code EDN
- Code DOI
- Abstract
- The results of extraction Ni2+ by electrolysis from used solution of chemical nickel plating are presented. The chemical resistance PbO2/Ti anode has allowed to lead electrolysis over a long period of time without using of membranes. It is necessary to correct рН value towards to increase for rise current efficiency of metal nickel and removal more than 94 % of Ni2+ from spent solution. It is suggested to use PbO2/Ti anode for oxidation CN- without adding CI- for process intensification. The oxidation process of CN- on the anode is accompanied by decrease of pH value of solution. The offered method makes it possible to reduce the concentration of zinc ions in industrial reclaimed bath by 90 %.
- Text
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