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Studies on Am(III) separation from simulated high-level waste using cobalt bis(dicarbollide) (1(-)) ion derivative covalently bound to N,N'-di-n-octyl diglycol diamide as extractant and DTPA as stripping agent
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SYSNO ASEP 0379835 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Studies on Am(III) separation from simulated high-level waste using cobalt bis(dicarbollide) (1(-)) ion derivative covalently bound to N,N'-di-n-octyl diglycol diamide as extractant and DTPA as stripping agent Tvůrce(i) Bubeníková, M. (CZ)
Selucký, P. (CZ)
Rais, J. (CZ)
Grüner, Bohumír (UACH-T) RID, SAI, ORCID
Švec, Petr (UACH-T) SAI, ORCID, RIDZdroj.dok. Journal of Radioanalytical and Nuclear Chemistry. - : Springer - ISSN 0236-5731
Roč. 293, č. 1 (2012), s. 403-408Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. HU - Maďarsko Klíč. slova Solvent extraction ; actinides ; high-level liquid waste ; dicarbollide derivatives ; carboranes ; TODGA ; DTPA Vědní obor RIV CA - Anorganická chemie CEP GA104/09/0668 GA ČR - Grantová agentura ČR CEZ AV0Z40320502 - UACH-T (2005-2011) UT WOS 000305228200055 DOI https://doi.org/10.1007/s10967-012-1679-0 Anotace The separation of minor actinides from high level liquid waste (HLLW) belongs to the principal challenges in current nuclear treatment. A derivative based on two cobalt bis(dicarbollide) (1(-)) ions covalently bound to the N,N'-di-n-octyl diglycolyl amide platform via diethyleneglycol chain with the formula {[(N,N'-(8-(OCH2 CH2)(2)-1,2-C2B9H10)(1',2'-C2B9H11)-3,3'-Co)(N,N'-n-C8H17)NCOCH2](2)O}Na-2 (TODGA-COSAN), dissolved in low polar mixture of hexyl methyl ketone and n-dodecane, was used as an extractant for efficient Am(III)/Eu(III) separation from PUREX HLLW. Am(III) could be selectively stripped from loaded organic phase by using a stripping agent composed from 0.05 M DTPA and 1 M citric acid as a buffer and 1 M NaNO3 at pH 3.0. Separation factor between europium and americium of 13 was achieved. The europium remaining in the organic phase could be consecutively effectively stripped by using solution of ammonium citrate or ammonium citrate with ammonium DTPA at pH similar to 7. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2013
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