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Preparation and use of polymeric materials containing hydrophobic anions and plasticizers for separation of cesium and strontium

United States Patent

5,666,641
September 9, 1997
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
Preparation and use of polymeric materials containing hydrophobic anions and plasticizers for extraction of cesium and strontium. The use of polymeric materials containing plasticizers which are solvents for hydrophobic anions such as derivatives of cobalt dicarbollide or tetraphenylborate which are capable of extracting cesium and strontium ions from aqueous solutions in contact with the polymeric materials, is described. The polymeric material may also include a synergistic agent for a given ion like polyethylene glycol or a crown ether, for removal of radioactive isotopes of cesium and strontium from solutions of diverse composition and, in particular, for solutions containing large excess of sodium nitrate.
Abney; Kent D. (Los Alamos, NM), Kinkead; Scott A. (Los Alamos, NM), Mason; Caroline F. V. (Los Alamos, NM), Rais; Jiri (17000 Praha 7, CZ)
08/ 418,712
April 7, 1995
The invention was made with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy to the Regents of the University of California. The government has certain rights in the invention.