Modeling of sorption kinetics of U(VI) micro-quantities nanostructured materials with anatase mesoporous structures
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Abstract The sorption kinetics of uranyl ions micro-quantities from fluoride solutions by nanostructured materials with anatase mesoporous structures has been studied. Using the model of competitive sorption of ions and positively charged complexes of uranyl ion on deprotonated hydroxyl groups of an anatase, kinetic curves of changes in the ratio of ionic forms of uranium in solution were calculated. Modeling was carried out under the assumption of a two-stage mechanism of uranium complex ions sorption. The modeling considered the influence of the uranyl ion carbonate complexes formation. The shift in equilibrium among ionic forms of uranyl correlates with the stability of the complexes in solution.
2015 ◽
Vol 23
(36)
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pp. 41-47
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2005 ◽
Vol 40
(12)
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pp. 2227-2246
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2006 ◽
Vol 137
(3)
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pp. 1538-1544
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