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System for recovery of daughter isotopes from a source material

United States Patent

August 4, 2009
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
A method of separating isotopes from a mixture containing at least two isotopes in a solution is disclosed. 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 containing thorium-229 and thorium-232, 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 thorium iodate precipitate. The thorium iodate 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. A system for producing an actinium-225/bismuth-213 product is also disclosed.
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)
11/ 117,046
April 28, 2005
GOVERNMENT RIGHTS The United States Government has certain rights in this invention pursuant to Contract No. DE-AC07-991D13727, and Contract No. DE-AC07-051D14517 between the United States Department of Energy and Battelle Energy Alliance, LLC.