Destruction of the Tokem-308 cation-exchange resin (analog of KU-2-8) by its gas-phase treatment in a nitrating atmosphere

The paper considers a new approach to the destruction of the Tokem-308 cation-exchange resin (analog of KU-2-8). The method is based on the gas-phase treatment of the resin in a nitrating atmosphere, followed by chemical treatment of the conversion products. It has been shown that the treatment of T...

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Bibliographic Details
Published in:Progress in nuclear energy (New series) 2022-07, Vol.149, p.104277, Article 104277
Main Authors: Kulyukhin, Sergey A., Krasavina, Elena P., Gordeev, Andrey V., Seliverstov, Alexandr F., Zakharova, Yuliya O., Nevolin, Yurii M.
Format: Article
Language:English
Subjects:
Cation-exchange resin
Gas-phase treatment
KU-2-8
Nitric acid
Nitrogen oxides
Tokem-308
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Summary:The paper considers a new approach to the destruction of the Tokem-308 cation-exchange resin (analog of KU-2-8). The method is based on the gas-phase treatment of the resin in a nitrating atmosphere, followed by chemical treatment of the conversion products. It has been shown that the treatment of Tokem-308 in the NOx–H2O(vapor)–air atmosphere at 403–443 K for 4–24 h with the subsequent dissolution of the conversion products in 0.5 mol/L NaOH and ozonation of the obtained solutions allows an effective destruction of Tokem-308 to be carried out. [Display omitted] •Gas-phase conversion of TOKEM-308 (analog of the KU-2-8 resin) in the nitrating atmosphere was studied.•TOKEM-308 conversion products exhibited high solubilities in 0.5 mol/L NaOH, ethanol and acetone.•Ozonating the solutions of TOKEM-308 conversion products in NaOH destroys organic impurities by at least ∼85%.
ISSN:0149-1970
DOI:10.1016/j.pnucene.2022.104277