Abstract

Radiation hardness of vinyl-pyridinium anion exchanger of AXIONIT VPA-2 brand, synthesized at Axion–Rare and Precious Metals AO (Perm) in the process of sorption extraction of plutonium from nitrate regeneration solutions formed in waste processing and in deactivation of industrial equipment. It was found that the effects associated with the destruction of the matrix of AXIONIT VPA-2 anion exchanger become more pronounced with the absorbed dose of gamma radiation increasing within the range from 35 to 1000 kGy. A partial destruction of granules of the anion exchanger is observed, its bulk density decreases, swelling in water and nitric acid solution increases, and the plutonium distribution coefficients regularly decrease, but remain rather large. Dynamic tests demonstrated that the irradiation of AXIONIT VPA-2 anion exchanger to an absorbed gamma radiation dose not exceeding 1000 kGy has no significant effect on its sorption properties in extraction of plutonium from nitrate regeneration solutions.

中文翻译：

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硝酸盐溶液中AXIONIT VPA-2品牌的乙烯基-吡啶鎓阴离子交换剂的辐射硬度

摘要

由Axion–Rare and Precious Metals AO（Perm）合成的AXIONIT VPA-2品牌的乙烯基-吡啶阴离子交换剂在从废物处理和工业设备失活形成的硝酸盐再生溶液中吸附萃取extraction的过程中合成的辐射硬度。已发现，随着γ射线吸收剂量在35至1000 kGy范围内增加，与AXIONIT VPA-2阴离子交换剂基质破坏相关的影响变得更加明显。观察到阴离子交换剂的颗粒被部分破坏，其堆积密度降低，在水和硝酸溶液中的溶胀增加，distribution的分布系数有规律地降低，但仍然很大。