Arvind Prasad, Kadukkappilly S. Vijayan, Ravinuthala V. S. Rao, Desigan Narasimhan, Ananthasivan Krishnamoorty
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引用次数: 0
摘要
草酸钚上清液需要一个处理步骤来进一步回收残余钚。由于溶液中存在的草酸根离子会给钚的回收带来问题,因此需要对其进行破坏。在本研究中,详细研究了基于 Mn2+ 催化销毁草酸根离子的方法,因为与传统工艺相比,这种方法可以最大限度地减少二次放射性废物的产生。研究了各种参数的影响,即 HNO3、催化剂、草酸的浓度以及金属离子的影响。此外,还研究了催化销毁方法的稳健性以及草酸销毁反应的动力学。还用 1 升规模的 CORAL 产生的 Pu 上清液演示了这一过程。
Catalytic destruction of oxalate in the supernatant stream generated during plutonium reconversion process
Plutonium oxalate supernatant requires a treatment step for further recovery of the residual Pu. As the oxalate ion present in the solution poses problems during the recovery of Pu, it needs to be destroyed. In the present work, Mn2+ based catalytic destruction of oxalate ion was studied in detail, as it could minimize the generation of secondary radioactive waste compared to the conventional process. The effect of various parameters, namely concentrations of HNO3, catalyst, oxalic acid and effect of the metal ion has been studied. Moreover, the robustness of the catalytic destruction method along with the kinetics of oxalate destruction reaction has been investigated. The process was also demonstrated with Pu supernatant generated from CORAL at 1 L scale.