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Method and solvent composition for regenerating an ion exchange resin

United States Patent

June 18, 2002
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A method and composition for removing perchlorate from a highly selective ion exchange resin is disclosed. The disclosed approach comprises treating the resin in a solution of super critical or liquid carbon dioxide and one or more quaternary ammonium chloride surfactant compounds.
Even; William R. (Livermore, CA), Irvin; David J. (Livermore, CA), Irvin; Jennifer A. (Livermore, CA), Tarver; Edward E. (Livermore, CA), Brown; Gilbert M. (Knoxville, TN), Wang; James C. F. (Livermore, CA)
Sandia Corporation (Livermore, CA)
09/ 469,573
December 22, 1999
The United States Government has rights in this invention pursuant to Contract No. DE-AC04-94AL85000 between the United States Department of Energy and the Sandia Corporation for operation of the Sandia National Laboratories and Contract No. DE-AC05-96OR22464 between the U.S. Department of Energy and Lockheed Martin Energy Research Corporation for the operation of the Oak Ridge National Laboratory.