Extraction of cesium and strontium from nuclear waste
AssigneeUniversity of South Carolina
InventorsMilton W. Davis, Jr., Charles B. Bowers, Jr.
Life of this patent
Estimating the term…
Abstract
Cesium is extracted from acidified nuclear waste by contacting the waste with a bis 4,4'(5) [1-hydroxy-2-ethylhexyl]benzo 18-crown-6 compound and a cation exchanger in a matrix solution. Strontium is extracted from acidified nuclear waste by contacting the waste with a bis 4,4'(5') [1-hydroxyheptyl]cyclohexo 18-crown-6 compound, and a cation exchanger in a matrix solution.
Claims8
In a method for reprocessing nuclear waste, wherein the waste is dissolved in acidic solution and the actinides are removed, the improvement comprising separating cesium from the waste by contacting the waste with an extractant consisting essentially of bis 4,4',(5') benzo 18-crown-6, together with a sulfonic acid cation exchanger in a matrix solution.
In a method for reprocessing nuclear waste, wherein the waste is dissolved in acidic solution and the actinides are removed, the improvement comprising separating strontium from the waste by extracting the waste with an extractant consisting essentially of bis 4,4'(5') (1-hydroxyheptyl) cyclohexo 18-crown-6, together with a sulfonic acid cation exchanger in a matrix solution.
Dependencies are inferred from the claim text.