Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4416861 | Chemosphere | 2006 | 6 Pages |
Abstract
The regeneration of chromium (VI) and the recovery of etched copper from chromium etching solutions by electrodialysis is improved by the addition of a concentrator cell in the catholyte chamber. The concentrator media used are ion-exchange resins or activated carbon cloth. The maximum percentages for the regeneration of chromium and recovery of copper in these systems is however less than 80% and 90% respectively because of the competition between the processes of oxidation of Cr(III) and electrodeposition of copper. A novel combination of electrolysis with electrodialysis and concentrator cell technology is developed that achieves 92% chromium regeneration and 90% copper recovery.
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Authors
Abdul J. Chaudhary, Bijita Ganguli, Susan M. Grimes,