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Going deeper into plutonium sorption affected by redox.
Romanchuk, Anna Yu; Trigub, Alexander L; Kalmykov, Stepan N.
Afiliación
  • Romanchuk AY; Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory 1/3, 119991 Moscow, Russia. Electronic address: romanchukay@my.msu.ru.
  • Trigub AL; Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory 1/3, 119991 Moscow, Russia; National Research Centre «Kurchatov Institute¼, Akademika Kurchatova pl. 1, 123182 Moscow, Russia.
  • Kalmykov SN; Lomonosov Moscow State University, Department of Chemistry, Leninskie Gory 1/3, 119991 Moscow, Russia.
J Contam Hydrol ; 266: 104400, 2024 Sep.
Article en En | MEDLINE | ID: mdl-39024912
ABSTRACT
Sorption of Pu(VI) onto synthesized goethite under oxidizing and normal conditions was investigated, which revealed its pH dependence on different solid/liquid ratios. Pu speciation upon sorption on the solid phase was characterized via extended X-ray absorption fine structure (EXAFS) spectroscopy, while that in solution was assessed using ultraviolet-visible (UV-Vis) spectroscopy and liquid-liquid extraction. The obtained results demonstrate differences in plutonium behavior in the studied systems. Pu(VI) remains hexavalent on the goethite surface and in solution under oxidizing conditions. While Pu(IV) is stabilized on the mineral and Pu(V) is found in solution under normal conditions. This study provides the thermodynamic descriptions of these reactions.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxidación-Reducción / Plutonio Idioma: En Revista: J Contam Hydrol Asunto de la revista: TOXICOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
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Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxidación-Reducción / Plutonio Idioma: En Revista: J Contam Hydrol Asunto de la revista: TOXICOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos