Extraction behavior of Pu(IV), Th(IV), and fission product elements with hexapropyl and hexabutyl phosphoramides

Autor:	Brahmananda Rao C. V. Siva, Sreenivasulu Balija, Suresh Ammath, Sivaraman Nagarajan, Jegan Govindaraj
Rok vydání:	2021
Předmět:	Nuclear fission product 020401 chemical engineering Chemistry Radiochemistry Extraction (chemistry) Phosphoramides 02 engineering and technology 0204 chemical engineering Physical and Theoretical Chemistry 010403 inorganic & nuclear chemistry 01 natural sciences 0104 chemical sciences
Zdroj:	Radiochimica Acta. 109:419-430
ISSN:	2193-3405 0033-8230
DOI:	10.1515/ract-2020-0093
Popis:	Hexapropyl phosphoramide (HPPA) and hexabutyl phosphoramide (HBPA) were examined for the macrolevel extraction and stripping of tetravalent metal ions such as Pu(IV) and Th(IV). The solvation number of Pu(IV) with both the phosphoramides were measured. The number of stages was evaluated for the quantitative extraction and stripping of Pu(IV) and Th(IV) in cross-current mode with 1.1 M phosphoramides in xylene from the nitric acid medium. The distribution ratios for the extraction of Th(IV) were measured with 1.1 M phosphoramides in xylene as a function of equilibrium aqueous phase Th(IV) and nitric acid concentration. In addition, distribution ratios for the extraction of fission product elements such as Zr, Tc, Ru, lanthanides (La, Pr, Nd and Gd) and activation product Am were also measured with 1.1 M HPPA and HBPA in n-Dodecane (n-DD) system as a function of aqueous phase nitric acid concentration. The extraction data generated with phosphoramides were compared with a 1.1 M TBP/n-DD system.
Databáze:	OpenAIRE
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