Ultrasound enhanced process for extracting metal species in supercritical fluids
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United States of America Patent
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Oct 31, 2006
Grant Date -
Oct 2, 2003
app pub date -
Mar 25, 2003
filing date -
Mar 26, 2002
priority date (Note) -
Expired
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Abstract
Improved methods for the extraction or dissolution of metals, metalloids or their oxides, especially lanthanides, actinides, uranium or their oxides, into supercritical solvents containing an extractant are disclosed. The disclosed embodiments specifically include enhancing the extraction or dissolution efficiency with ultrasound. The present methods allow the direct, efficient dissolution of UO.sub.2 or other uranium oxides without generating any waste stream or by-products.
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