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A. S. Semenkova, O. A. Ilina, V. V. Krupskaya, S. V. Zakusin, O. V. Dorzhieva, B. V. Pokidko, A. Yu. Romanchuk, S. N. Kalmykov
A comparison of radionuclide sorption on
various clay minerals-components of engineering safety barriers
Abstract
The sorption properties of various clay
minerals and materials based on them in relation to Cs(I), Sr(II), U(VI),
Eu(III), Pu(IV,V,VI) were compared. To determine the mineral composition, all
samples were characterized using X-ray diffraction and X-ray fluorescence
methods, the value of the specific surface for all samples was determined and
sorption experiments were carried out. As a result of experiments it was shown
that the high content of swelling clay minerals (montmorillonite and
mixed-layered clay minerals) in the barrier material will contribute to its
high sorption capacity in relation to the majority of the studied
radionuclides.
Key words: sorption, radionuclides,
engineering safety barriers, bentonite, kaolinite.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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