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Fluoro-alcohol phase modifiers and process for cesium solvent extraction

United States Patent

May 20, 2003
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
The invention relates to a class of phenoxy fluoro-alcohols, their preparation, and their use as phase modifiers and solvating agents in a solvent composition for the extraction of cesium from alkaline solutions. These phenoxy fluoro-alcohols comply with the formula: ##STR1## in which n=2 to 4; X represents a hydrogen or a fluorine atom, and R.sup.2 -R.sup.6 are hydrogen or alkyl substituents. These phenoxy fluoro-alcohol phase modifiers are a necessary component to a robust solvent composition and process useful for the removal of radioactive cesium from alkaline nuclear waste streams. The fluoro-alcohols can also be used in solvents designed to extract other cesium from acidic or neutral solutions.
Bonnesen; Peter V. (Knoxville, TN), Moyer; Bruce A. (Oak Ridge, TN), Sachleben; Richard A. (Westford, MA)
The United States of America as represented by the Department of Energy (Washington, DC)
09/ 703,899
November 2, 2000
STATEMENT AS TO RIGHTS TO INVENTIONS MADE UNDER FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT The U.S. Government has rights in this invention pursuant to Contract No. DE-AC05-00OR22725 awarded by the Department of Energy to UT-Battelle, LLC.