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Dissolution of radioactive spent cation exchange resin by Fenton process and mineralization by O3/Fenton-like process
Ji Jia1, Sijie Yin1, Xiangbiao Yin1,2
1School of Nuclear Science and Technology, University of South China, Hengyang, People's Republic of China.
Abstract:
A two-stage process for the treatment of solid radioactive spent cation exchange resin was developed in this study. The Fenton process was first employed to dissolve solid resin, followed by the O3/Fenton-like process for degrading the resulting organic liquid. The impacts of reaction time, initial pH, concentration, and H2O2 dosage on degradation efficiency were systematically evaluated. Under optimal conditions, a mineralization efficiency exceeding 99.85% was achieved. Initial pH was identified as the most significant factor influencing degradation performance. The reaction followed a pseudo-first-order model based on kinetic fitting. These findings provide foundational data to support the industrial application of the two-stage process for treating radioactive spent cation exchange resin.
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