Stabilization and volume reduction of radioactive spent ion exchange resins

YE Yu-Cai，

YU Shao-Ning

Nuclear Science and Techniques

Vol.12, No.1

pp.68-72

Published in print 01 Feb 2001

CLC：TL941+.111, TQ32, O61

52300

Stabilization and volume reduction of spent radioactive ion-exchange resins (IERs) were studied. Stabilization technology includes volume reduction with wet chemical oxidation process and immobilization of the residue into cement. Under suitable conditions, the exhausted radioactive ion-exchange resins were dissolved successfully in a H₂O₂-Fe²⁺/Cu²⁺ catalytic oxidation system (Fenton reagent). The analytical results indicated that the radioactive nuclides loaded in the resins were concentrated in decomposed solution and solid residues. The process parameters of wet chemical oxidation and solidification were also obtained. The decomposition ratios were 100% and more than 90% for cation and anion IERs respectively. The waste volume was decreased by 40% compared with that of original spent resins.

Radioactive spent resinSolidificationWet chemical oxidation

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