Extraction of uranium and transuranium elements with tert-butylthiacalix[4]arene from carbonate-alkaline solutions

Extraction efficiency of uranium and transuranium elements (Np, Pu, Am and Cm) with tert -butylthiacalix[4]arene TCA from carbonate-alkaline solutions is studied and compared with that of europium (III). Plutonium (III, IV) extraction efficiency with TCA is found to be lower comparing with that of t...

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Veröffentlicht in:	Journal of radioanalytical and nuclear chemistry 2018-03, Vol.315 (3), p.639-642
Hauptverfasser:	Kuzovkina, Elena V., Lavrinovich, Elena A., Novikov, Alexander P., Stepanova, Ekaterina S., Karavan, Maria D., Smirnov, Igor V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Americium Carbonates Chemistry Chemistry and Materials Science Diagnostic Radiology Efficiency Europium Extraction processes Hadrons Heavy Ions Inorganic Chemistry Ionizing radiation Kinetics Neptunium Nuclear Chemistry Nuclear Physics Physical Chemistry Plutonium Radioisotopes Rare earth metal compounds Transuranium elements Uranium
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Zusammenfassung:	Extraction efficiency of uranium and transuranium elements (Np, Pu, Am and Cm) with tert -butylthiacalix[4]arene TCA from carbonate-alkaline solutions is studied and compared with that of europium (III). Plutonium (III, IV) extraction efficiency with TCA is found to be lower comparing with that of trivalent americium and europium. Extraction efficiency of studied radionuclides decreases as following: Am ≫ Eu ≫ Pu (III), U(VI), Np (V) > Pu (IV) at pH 12. Carbonate concentration increase in aqueous phase suppresses significantly extraction of all studied radionuclides, except americium. This condition can be used for americium individual recovery from complex radioactive carbonate-alkaline solutions.
ISSN:	0236-5731 1588-2780
DOI:	10.1007/s10967-018-5712-9