STRIPPING AGENT AND METHOD OF USE
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United States of America Patent
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Issued Date -
May 29, 2014
app pub date -
May 18, 2011
filing date -
May 18, 2010
priority date (Note) -
Abandoned
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Abstract
A method of removing mercury adsorbed onto activated carbon is provided. The method includes treating an adsorbed mixture of metal cyanide complexes on a carbon substrate with an acidic solution of a stripping agent that is a weak acid. The method also eliminates inorganic scalants from the carbon substrate. In precious metal mining operations, the disclosed method reduces environmental emissions of mercury during the gold elution and carbon reactivation processes.
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