With the development of nuclear industry, the treatment and disposal of spent radioactive ion exchange resins has become a problem that needs to be solved at present. Because of the moderate reaction conditions, simple equipment, and low operational cost, wet air oxidation has recently received considerable attention from the research field of radioactive wastes treatment. In this paper, various advanced wet air oxidation processes for treatment of spent resins are summarized, including acid boiling degradation, supercritical water oxidation, electrochemical oxidation, and wet catalytic oxidation with hydrogen peroxide. The development status, influencing factors, reaction mechanism and kinetics of wet catalytic oxidation, as well as the distribution of radioactive nuclides in the off-gas, decomposition solution and solid residue, are briefly introduced. The future research directions and applications are also discussed.

radioactive spent ion exchange resin  /  wet air oxidation  /  reaction mechanism  /  kinetics  /  catalysts