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Fluoro-alcohol phase modifiers and process for cesium solvent extraction

Patent ·
OSTI ID:1174336
; ;

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
The United States of America as represented by the Department of Energy (Washington, DC)
Patent Number(s):
6,566,561
Application Number:
09/703,899
OSTI ID:
1174336
Country of Publication:
United States
Language:
English

References (6)

Improved Performance of the Alkaline-Side CSEX Process for Cesium Extraction from Alkaline High-Level Waste Obtained by Characterization of the Effect of Surfactant Impurities report November 1999
Development of Process Chemistry for the Removal of Cesium from Acidic Nuclear Waste by Calix[4]arene-crown-6 Ethers book July 2000
Alkane-lnsoluble Trialkylammonium Double Salts Involving the Dodecamolybdophosphate Anion. II. Effect of Amine Structure on Third-Phase Formation journal February 1987
Ultraviolet absorption spectrum and kinetics and mechanism of the self-reaction of 1,1,2,2-tetrafluoroethaneperoxyl radicals in the gas phase at 298 K journal December 1992
A Robust Alkaline-Side csex Solvent Suitable for Removing Cesium from Savannah River high Level Waste# journal November 2000
Alkaline-Side Extraction of Cesium from Savannah River Tank Waste Using a Calixarene-Crown Ether Extractant report December 1998

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