TAT-11: Selective Separation of Radium and Actinium from Bulk Thorium Target Material

Ottawa, ON, Canada (UroToday.com) Following proton irradiation of a Thorium target, it is dissolved in sulfuric acid. It is then passed through a cation exchange were the Ac and Rn are retained in the resin and the thorium sulfates are rejected.

Actinium and radium are recovered from the cation exchange resin in a small volume of 5M HNO3 and directly purified via extraction chromatography with UTEVA and DGA resins. The separator Rn225 can be used as a generator to produce high purity Ac225.

Presented by: Mr. Daniel McAlister, Eichrom Technologies, LLC, Lisle, Illinois, United States

Written by: William Carithers, Lawrence Berkeley National Laboratory at the 11th International Symposium on Targeted Alpha Therapy (TAT-10)  April 1 - April 4, 2019 - Ottawa, ON, Canada

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