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Production of ultrahigh purity copper using waste copper nitrate solution

Title
Production of ultrahigh purity copper using waste copper nitrate solution
Authors
Choi J.Y.Kim D.S.
Ewha Authors
김동수
SCOPUS Author ID
김동수scopus
Issue Date
2003
Journal Title
Journal of Hazardous Materials
ISSN
0304-3894JCR Link
Citation
vol. 99, no. 2, pp. 147 - 158
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The production of ultrahigh purity copper (99.9999%) by electrolysis in the presence of a cementation barrier has been attempted employing a waste nitric copper etching solution as the electrolyte. The amount of copper deposited on the cathode increased almost linearly with electrolysis time and the purity of copper was observed to increase as the electrolyte concentration was increased. At some point, however, as the electrolyte concentration increased, the purity of copper decreased slightly. As the total surface area of cementation barrier increased, the purity of product increased. The electrolyte temperature should be maintained below 35°C in the range of investigated electrolysis conditions to obtain the ultrahigh purity copper. Considering that several industrial waste solutions contain valuable metallic components the result of present study may support a claim that electrowinning is a very desirable process for their treatment and recovery. © 2003 Elsevier Science B.V. All rights reserved.
DOI
10.1016/S0304-3894(02)00312-6
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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