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Oxidative digestion of spent sulfocationites containing radioactive rare earth and transplutonium elements.

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Title: Oxidative digestion of spent sulfocationites containing radioactive rare earth and transplutonium elements.
Authors: Milyutin, V. V.1 (AUTHOR), Kharitonov, O. V.1 (AUTHOR), Firsova, L. A.1 (AUTHOR), Nekrasova, N. N.1 (AUTHOR), Kozlitin, E. A.1 (AUTHOR) evgeny_kozlitin@mail.ru
Source: Journal of Radioanalytical & Nuclear Chemistry. Aug2020, Vol. 325 Issue 2, p667-671. 5p. 7 Graphs.
Subjects: Digestion, Transplutonium elements, Sorption techniques, Plutonium, Cesium
Geographic Terms: Russia
Abstract: In this work, the chemical digestion conditions for spent KU-2 × 8 sulfocationites manufactured in Russia were investigated. It was shown that the complete oxidative digestion of the ionites could be performed in solutions of H2O2 and HNO3 in the presence of Fe3+ ions adsorbed on the resin as an oxidation catalyst. The total digestion time of the resin was studied as a function of the presence of the digestion catalysts, solid-to-liquid phase ratio, process temperature, Fe3+ ion content in the solid sulfocationite phase, and the divinylbenzene (DVB) cross-linking agent content of the ionite. A possibility for the removal of rare earth element (REE) and transplutonium element (TPE) radionuclides from the solution of the digested sulfocationite was shown by the sorption technique using the tetra-n-octyldiglycolamide (TODGA)-based sorbent. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Radioanalytical & Nuclear Chemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Oxidative digestion of spent sulfocationites containing radioactive rare earth and transplutonium elements.
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  Data: <searchLink fieldCode="DE" term="%22Digestion%22">Digestion</searchLink><br /><searchLink fieldCode="DE" term="%22Transplutonium+elements%22">Transplutonium elements</searchLink><br /><searchLink fieldCode="DE" term="%22Sorption+techniques%22">Sorption techniques</searchLink><br /><searchLink fieldCode="DE" term="%22Plutonium%22">Plutonium</searchLink><br /><searchLink fieldCode="DE" term="%22Cesium%22">Cesium</searchLink>
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  Data: In this work, the chemical digestion conditions for spent KU-2 × 8 sulfocationites manufactured in Russia were investigated. It was shown that the complete oxidative digestion of the ionites could be performed in solutions of H2O2 and HNO3 in the presence of Fe3+ ions adsorbed on the resin as an oxidation catalyst. The total digestion time of the resin was studied as a function of the presence of the digestion catalysts, solid-to-liquid phase ratio, process temperature, Fe3+ ion content in the solid sulfocationite phase, and the divinylbenzene (DVB) cross-linking agent content of the ionite. A possibility for the removal of rare earth element (REE) and transplutonium element (TPE) radionuclides from the solution of the digested sulfocationite was shown by the sorption technique using the tetra-n-octyldiglycolamide (TODGA)-based sorbent. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Radioanalytical & Nuclear Chemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10967-020-07277-4
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      – Code: eng
        Text: English
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      – SubjectFull: Digestion
        Type: general
      – SubjectFull: Transplutonium elements
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      – SubjectFull: Sorption techniques
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      – SubjectFull: Plutonium
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      – SubjectFull: Russia
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      – TitleFull: Oxidative digestion of spent sulfocationites containing radioactive rare earth and transplutonium elements.
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              Text: Aug2020
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              Y: 2020
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