Abstract
The sorption extraction of Eu(III), a chemical analogue of 241Am and other trivalent transuranic elements, with Zn,Al -layered double hydroxide (LDH), intercalated with ethylenediaminetetraacetic acid ions (Zn,Al-EDTA), and its composite with magnetic properties was studied. It was shown that complexation processes play a decisive role in the extraction of Eu(III) from an aqueous solution due to its binding to the ligand in the interlayer space. In addition, an important role in the extraction of Eu(III) from humic waters (in the presence of fulvic acids) belongs to magnetite deposited on the surface of the Fe3О4/Zn,Al-EDTA sample, where Eu(III) mixed-ligand complexes with ferrinol groups of magnetite and fulvic acids of an aqueous solution, [LDH–Fe–O]-Eu-FA, may be also formed. The analysis of the data obtained gives grounds to recommend the investigated materials as sorbents of radionuclide-complexing agents in the treatment of sludge by the adsorption magnetic separation methods.
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Translated from Radiokhimiya, No. 3, pp. 359–367, April, 2021 https://doi.org/10.31857/S0033831121030085
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Pshinko, G.N., Puzyrnaya, L.N., Kosorukov, A.A. et al. Extraction of Eu(III) from Aqueous Media with Zn,Al-Layered Double Hydroxide, Intercalated with EDTA Ions, and Its Magnetic Composite. Radiochemistry 63, 325–333 (2021). https://doi.org/10.1134/S1066362221030103
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DOI: https://doi.org/10.1134/S1066362221030103