Towards a sludgeless heavy metal finishing industry for a cleaner environment
The treatment of heavy metals is based primarily on chemical coagulation and precipitation where substantial amounts of toxic sludge are normally generated. A study using an electrolytic processes has been carried out to recover heavy metals from a mixed plating bath in a metal finishing factory. Th...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English English |
| Published: |
Elsevier
1996
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| Online Access: | http://psasir.upm.edu.my/id/eprint/35251/1/Towards%20a%20sludgeless%20heavy%20metal%20finishing%20industry%20for%20a%20cleaner%20environment.pdf http://psasir.upm.edu.my/id/eprint/35251/7/1-s2.0-S0011916496001373-main.pdf http://psasir.upm.edu.my/id/eprint/35251/ http://www.sciencedirect.com/science/article/pii/S0011916496001373 |
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| Summary: | The treatment of heavy metals is based primarily on chemical coagulation and precipitation where substantial amounts of toxic sludge are normally generated. A study using an electrolytic processes has been carried out to recover heavy metals from a mixed plating bath in a metal finishing factory. The unit uses a RETEC system consisting of a high surface area cell based on a simple theory of electrolysis and produces a very large surface area about 10–15 times the geometrical surface area of the cathode. This paper presents cases where 95% tin, lead, and 98% copper, nickel, and zinc were successfully recovered, and discusses economic considerations. |
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