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Synthesis and Evaluation of Uranium and Thorium Imprinted Resins

Published online by Cambridge University Press:  21 March 2011

K.L. Noyes ,
M. Draye ,
A. Favre-Réguillon ,
J. Foos ,
A. Guy  and
K.R. Czerwinski
K.L. Noyes
Affiliation:
Nuclear Engineering Department, Massachusetts Institute of Technology, 24-210, 77 Massachusetts Ave. Cambridge, MA 02139
M. Draye
Affiliation:
Conservatoire National Des Arts Et Metiers, Laboratoire Des Sciences Nucleaires, 292 Rue Saint-Martin, 75141 Paris, France
A. Favre-Réguillon
Affiliation:
Ecole Nationale Superieur de Chimie de Paris, 11 rue Pierre et Marie Curie 75005 Paris, France
J. Foos
Affiliation:
Ecole Nationale Superieur de Chimie de Paris, 11 rue Pierre et Marie Curie 75005 Paris, France
A. Guy
Affiliation:
Ecole Nationale Superieur de Chimie de Paris, 11 rue Pierre et Marie Curie 75005 Paris, France
K.R. Czerwinski
Affiliation:
Nuclear Engineering Department, Massachusetts Institute of Technology, 24-210, 77 Massachusetts Ave. Cambridge, MA 02139
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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 the 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-based 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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 713: Symposium JJ – Scientific Basis for Nuclear Waste Management XXV , 2002 , JJ12.6
Copyright
Copyright © Materials Research Society 2002

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References

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