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Ultrasound enhanced process for extracting metal species in supercritical fluids

United States Patent

October 31, 2006
View the Complete Patent at the US Patent & Trademark Office
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.
Wai; Chien M. (Moscow, ID), Enokida; Youichi (Nagoya, JP)
Idaho Research Foundation, Inc. (Moscow, ID)
10/ 397,862
March 25, 2003
STATEMENT OF GOVERNMENT SUPPORT This invention was funded in part by the Department of Energy Office of Environmental Management, DE-FG07-98ER14913. The United States Government may have certain rights in this invention.