Abstract The treatment of spent resin generated by nuclear power plants using Fenton and O3-Fenton process as an alternative to the present cementation method is an attractive solution. A comparison among O3-Fenton and Fenton process for spent resin degradation were performed in this investigation. The different effects of reaction temperature and ozone concentration was compared between Fenton and O3-Fenton process. In addition the resulted COD removal ratio, residue weight, iron ions concentration change, resin dissolution, degradation intermediates and final products were also compared in these two processes. The results showed that the addition of O3 to Fenton process can improve the degradation ratio of spent resin. With an O3 concentration of 161.3 mg/L, the resin degradation ratio reached 97.1%. The residue COD of O3-Fenton process was 60.0% lower than Fenton process. With O3 addition, the dissolution rate of spent resin was reduced and the mineralization rate of dissolved organics increased by 19.3%. The residual organic matters in the final solution included mainly oxalic acid. The degradation of spent resin after dissolution conformed to the first-order kinetic equation in both Fenton and O3-Fenton process. O3-Fenton process could get better results and save processing costs.

中文翻译：

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Fenton 和 O3-Fenton 工艺对废树脂降解的比较

摘要 使用 Fenton 和 O3-Fenton 工艺处理核电厂产生的废树脂是一种有吸引力的解决方案。本研究对 O3-Fenton 和 Fenton 工艺对废树脂降解进行了比较。比较了Fenton工艺和O3-Fenton工艺对反应温度和臭氧浓度的不同影响。此外，还比较了这两种工艺的COD去除率、残留物重量、铁离子浓度变化、树脂溶解、降解中间体和最终产品。结果表明，在Fenton工艺中加入O3可以提高废树脂的降解率。当 O3 浓度为 161.3 mg/L 时，树脂降解率达到 97.1%。O3-Fenton 工艺的残留 COD 为 60。比芬顿工艺低 0%。O3的加入降低了废树脂的溶解速度，溶解有机物的矿化率提高了19.3%。最终溶液中残留的有机物主要包括草酸。废树脂溶解后的降解符合 Fenton 和 O3-Fenton 过程中的一级动力学方程。O3-Fenton 工艺可以获得更好的效果并节省加工成本。