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Process for recovery of daughter isotopes from a source material

United States Patent

October 4, 2005
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
The invention includes a method of separating isotopes from a mixture containing at least two isotopes in a solution. A first isotope is precipitated and is collected from the solution. A daughter isotope is generated and collected from the first isotope. The invention includes a method of producing an actinium-225/bismuth-213 product from a material containing thorium-229 and thorium-232. A solution is formed containing nitric acid and the material and iodate is added to form a thorium iodate precipitate. A supernatant is separated from the thorium iodate precipitate and a second volume of nitric acid is added to the precipitate. The precipitate is stored and a decay product comprising actinium-225 and bismuth-213 is generated in the second volume of nitric acid which is then separated from the thorium iodate precipitate, filtered, and treated using at least one chromatographic procedure. The invention also includes a system for producing an actinium-225/bismuth-213 product.
Tranter; Troy J. (Idaho Falls, ID), Todd; Terry A. (Aberdeen, ID), Lewis; Leroy C. (Idaho Falls, ID), Henscheid; Joseph P. (Idaho Falls, ID)
Battelle Energy Alliance, LLC (Idaho Falls, ID)
10/ 247,016
September 18, 2002
GOVERNMENT RIGHTS The United States Government has rights in the following invention pursuant to Contract No. DE-AC07-99ID13727 between the United States Department of Energy and Bechtel BWXT Idaho, LLC.