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Reference type: Book Chapter
Authors: Noyes KL, Draye M, Favre-Reguillon A, Foos J, Guy A, Czerwinski KR
Publication date: 2002
Chapter title: Synthesis and evaluation of uranium and thorium imprinted resins.
Page numbers: 901-906.

Book title: Scientific Basis For Nuclear Waste Management XXV
Editors: Finch RJ, Bullen DB
Publisher: Materials Research Society
City: Warrendale
Series title: MRS Symposium Proceedings
Volume number: 713

Abstract: Ion exchange resins were created to complex either UO22+ or Th4+ from aqueous solutions. The nitrate salt of the target metal ion was dissolved in CCl2H2, while the resin was created around die ions to provide a unique structure based upon each metal. These resins were synthesized by a radical polymerization method, producing a reusable organic solid. The resins were qualified by obtaining values for their proton exchange capacities and data to define their complexation kinetics. Proton exchange capacities were determined using an indirect titration and were found to be 6.40 meq/g for the uranium-based resin and 4.61 meq/g for the thorium-bused resin. Data for the resins' kinetics were obtained at pH 1.0, 2.5, 4.0, and 5.5. Results show that the templated resin rapidly removed the target actinides from aqueous solution under experimental conditions. Once loaded with metal, the ions can easily be removed with 5 M HNO3 and reused

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