Extraction of rare-earth and transplutonium elements with dibutyl hydrogen phosphate in m-nitrobenzotrifluoride

Autor:	V. M. Esimantovskii, A. N. Viznyi, S. A. Rodionov, B. Ya. Zilberman
Rok vydání:	2008
Předmět:	Metal Lanthanide Aqueous solution Chemistry visual_art Extraction (chemistry) Rare earth visual_art.visual_art_medium Aqueous two-phase system Physical and Theoretical Chemistry Hydrogen phosphate Diluent Nuclear chemistry
Zdroj:	Radiochemistry. 50:373-377
ISSN:	1608-3288 1066-3622
DOI:	10.1134/s1066362208040073
Popis:	The extraction of rare-earth (REE) and transplutonium (TPE) elements, with Ce, Eu, and Am as examples, from aqueous HNO3 with dibutyl hydrogen phosphate (HDBP) in m-nitrobenzotrifluoride (MNBTF) was studied. The diluent effect on the Eu and Am extraction with dibutyl hydrogen phosphate was examined at various HNO3 concentrations in the aqueous phase. Based on the data obtained, a mechanism of REE extraction was suggested and the parameters of extraction equations for the initial lanthanide concentrations in the aqueous phase from 0.1 to 100 g l−1 (counting on metal), HDBP concentration in MNBTF of 0.1–2 M, and HNO3 concentration in the range 0.5–8 M were calculated. Isotherms of HNO3 extraction with HDBP solutions of various concentrations were obtained. The possibility of attaining higher concentrations of REE solvates in their extraction with HDBP in MNBTF was demonstrated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7988447f3fff727d65929269524126fd https://doi.org/10.1134/s1066362208040073 Zobrazit plný text záznamu Plný text ve formátu PDF