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Solvent and process for recovery of hydroxide from aqueous mixtures

United States Patent

November 27, 2001
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
Hydroxide values and associated alkali metal may be recovered from alkaline aqueous solutions using classes of fluorinated alcohols in a water immiscible solvent. The alcohols are characterized by fluorine substituents which are proximal to the acidic alcohol protons and are located to adjust the acidity of the extractant and the solubility of the extractant in the solvent. A method for stripping the extractant and solvent to regenerate the extractant and purified aqueous hydroxide solution is described.
Moyer; Bruce A. (Oak Ridge, TN), Chambliss; C. Kevin (Macon, GA), Bonnesen; Peter V. (Knoxville, TN), Keever; Tamara J. (Oak Ridge, TN)
U.T. Battlle, LLC (Oak Ridge, TN)
09/ 404,104
September 23, 1999
This invention was made with U.S. Government support under contract number DE-AC05-96OR22464 awarded by the United States Department of Energy to Lockheed Martin Energy Research Corporation, and the U.S. Government has certain rights in this invention.