Details

Autor(en) / Beteiligte

• Kuzovkina, Elena V.
• Lavrinovich, Elena A.
• Novikov, Alexander P.
• Stepanova, Ekaterina S.
• Karavan, Maria D.
• Smirnov, Igor V.

Titel

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

Ist Teil von

• Journal of radioanalytical and nuclear chemistry, 2018-03, Vol.315 (3), p.639-642

Ort / Verlag

Dordrecht: Springer Netherlands

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.