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Behavior of Cs, Np(V), Pu(IV), and U(VI) in pore water of bentoniteстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
- Авторы: Sabodina M.N., Kalmykov S.N., Artem’eva K.A., Zkharova E.V., Sapozhnikov Yu A.
- Журнал: Radiochemistry
- Том: 48
- Номер: 5
- Год издания: 2006
- Издательство: Pleiades Publishing, Inc.
- Местоположение издательства: New York, USA
- Первая страница: 488
- Последняя страница: 492
- DOI: 10.1134/S1066362206050158
- Аннотация: Sorption of Cs, Pu(IV), Np(V), and U(VI) with bentonite from solutions was studied. Physicochemical species of radionuclides in the liquid phase were determined, the sorption mechanisms were established, and the influence of bentonite colloids on the behavior of radionuclides was studied. It was shown that Cs is sorbed by the ion-exchange mechanism, whereas the sorption of actinides at pH > 5 is governed by the reaction with surface hydroxy groups of betonite, and at pH < 5 the competing processes are ion exchange and complex formation. Reduction of Np(V) and U(VI) to Np(IV) and U(IV) in the solution with Fe(II) compounds present in the system was proved by the extraction method. Various methods of separating the solid phase were used in studying the dependence of the distribution coefficients of Np and Pu on the ratio of pore water and bentonite; it was shown that Np and Pu are sorbed on bentonite colloids. © 2006 Nauka/Interperiodica.
- Добавил в систему: Сапожников Юрий Александрович