Method for recovering at least one metal from an acidified waste water sludge
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United States of America Patent
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Jan 4, 2000
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N/A
app pub date -
Jun 10, 1996
filing date -
Aug 26, 1993
priority date (Note) -
Expired
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Abstract
A method for recovering at least one metal from an acidified waste water sludge by liquid-liquid extraction by providing an acidified waste water sludge containing ions of at least one metal and organic material, treating the waste water with an oxidizer to convert the organic material into a form that does not have an unfavorable effect on a subsequent liquid-liquid extraction, and subjecting the treated, acidified waste water sludge to a liquid-liquid extraction thereby obtaining an organic phase loaded with ions of said at least one metal, and subsequently recovering ions of said at least one metal from said organic phase.
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