| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10372703 | Journal of Hazardous Materials | 2011 | 5 Pages |
Abstract
Old dumps of mercury waste sludges from chlor-alkaline industry are an environmental threat if not properly secured. Thermal retortion can be used to remove mercury from such wastes. This treatment reduces the total mercury content, and also may reduce the leachability of the residual mercury. The effects of treatment temperature and treatment time on both residual mercury levels and mercury leachability according to the US EPA TCLP leaching procedure, were investigated. Treatment for 1 h at 800 °C allowed to quantitatively remove the mercury. Treatment at 400 °C and above allowed to decrease the leachable Hg contents to below the US EPA regulations. The ultimate choice of treatment conditions will depend on requirements of further handling options and cost considerations.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
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Authors
Y. Busto, X. Cabrera, F.M.G. Tack, M.G. Verloo,