Sonication treatment of polychlorinated biphenyl contaminated media
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United States of America Patent
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Jan 10, 2006
Grant Date -
Jul 28, 2005
app pub date -
Apr 23, 2003
filing date -
Apr 23, 2002
priority date (Note) -
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Abstract
The invention consists of a method for treating polychlorinated biphenyl (PCB) contaminated media by: a) combining the media with a fluid containing one or more liquid hydrocarbons to form a media/fluid mixture; b) sonicating the mixture at audio frequency to extract PCB from the media into the fluid; and c) treating the fluid with sodium-containing alkali metal. The method may include additional steps to reduce the size of the media. Alternatively, the fluid can be decanted from the media after sonication and treated separately with sodium-containing alkali metal.
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