Solvent extraction of trivalent europium and americium into nitrobenzene by using hydrogen dicarbollylcobaltate and tetraisopropyl[oxybis(2,1-ethanediyliminocarbonyl)]-bisphosphoramidate

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Published: Feb 9, 2018
DOI: https://doi.org/10.2298/JSC170220110M
Keywords:
liquid–liquid extraction europium americium N-phosphor¬ylated bis-urea extraction and stability constants water–nitrobenzene system

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Emanuel Makrlík
Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Kamýcká 129, 165 21 Prague 6-Suchdol
Petr Vaňura
Department of Analytical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6
Pavel Selucký
Nuclear Research Institute, 250 68 Řež
Vasily Brusko
JSC NIIneftepromchim, N. Erschova st., 29, Kazan, 420061

Abstract

Solvent extraction of micro-amounts of Eu3+ and Am3+ from water into nitrobenzene by means of a mixture of hydrogen dicarbollylcobaltate (H+B-) and tetraisopropyl[oxybis(2,1-ethanediyliminocarbonyl)]-bisphosphoramidate (L) was studied. The equilibrium data were explained assuming that the species HL+, ML23+ and ML33+ (M3+ = Eu3+ or Am3+) are extracted into the org­anic phase. Extraction and stability constants of the cationic complex species in nitro­benzene saturated with water were determined and discussed. From the experi­mental results, it is obvious that this effective ligand L for the Eu3+ and Am3+ could be considered as a potential extraction agent for nuclear waste treatment.

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How to Cite
[1]
E. Makrlík, P. Vaňura, P. Selucký, and V. Brusko, “Solvent extraction of trivalent europium and americium into nitrobenzene by using hydrogen dicarbollylcobaltate and tetraisopropyl[oxybis(2,1-ethanediyliminocarbonyl)]-bisphosphoramidate”, J. Serb. Chem. Soc., vol. 83, no. 1, pp. 51–60, Feb. 2018.
Issue
Vol. 83 No. 1 (2018)
Section
Analytical Chemistry

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