Abstract
The sorption properties of various clay minerals and materials based on them in relation to Cs(I), Sr(II), U(VI), Eu(III), and Pu(IV,V,VI) are compared. To determine the mineral composition, all the samples are studied by X-ray diffraction and X-ray fluorescence, the values of the specific surface are determined, and sorption experiments are carried out. It is shown that the high concentration of swelling clay minerals (montmorillonite, mixed-layer clay minerals) in the barrier material will contribute to its high sorption capacity in relation to the majority of the studied radionuclides.
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Funding
The sorption experiments were supported by the Russian Science Foundation (project no. 20-73-00135). The mineral analysis was partially supported by the Russian Foundation for Basic Research (project no. 18-29-12115 mk). The study was performed within the Development Program of the Interdisciplinary Scientific and Educational School of Moscow State University “The Future of the Planet and Global Environmental Changes.”
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Translated by E. Boltukhina
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Semenkova, A.S., Ilina, O.A., Krupskaya, V.V. et al. The Sorption of Radionuclides on Clay Minerals—the Components of Engineering Safety Barriers. Moscow Univ. Chem. Bull. 76, 316–324 (2021). https://doi.org/10.3103/S0027131421050047
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DOI: https://doi.org/10.3103/S0027131421050047