URANIUM ISOTOPE ENRICHMENT BY COMPLEXATION WITH CHELATING POLYMER ADSORBENT

Abstract Polyacrylamidoxime (PAO) granules prepared by radiation-induced polymerization of acrylonitrile and introduction of amidoxime groups by reaction with hydroxylamine are used for separation of 235 U and 238 U in solution by utilizing the small difference of stability constant of the complex between polymer ligand and metal ions. An isotope ratio of 0.00763 is obtained by single-column experiment. This value is 5% higher than that of the feed solution. The coordination of PAO with metal ions, Cu 2+ , was investigated by FT-IR, XRD and ESR analysis.

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