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Separation, speciation, and mechanism of astatine and bismuth extraction from nitric acid into 1-octanol and methyl anthranilate

Journal Article · · Separation and Purification Technology
We report a detailed study of At and Bi extraction from nitric acid media into conventional solvents, namely 1-octanol and methyl anthranilate, has been performed. The analysis includes a mathematical modeling which allows the fitting of experimental data and determination of extraction constants of the two above mentioned elements. Also, this approach helped to estimate a stability constant of a weak AtO(NO3) complex along with thermodynamic constants describing the redox process of At species in the acidic solution and formation of an adduct of Bi in the presence of methyl anthranilate. The results of the fitting have been used to calculate corresponding separation factors of Bi and At as well. Moreover, a computational study has been performed to evaluate At interaction with the above mentioned solvents.
Research Organization:
Texas A & M University, College Station, TX (United States)
Sponsoring Organization:
Texas A&M University; USDOE; USDOE Office of Science (SC)
Grant/Contract Number:
FG02-93ER40773; NA0003841; SC0020958
OSTI ID:
1977641
Alternate ID(s):
OSTI ID: 1834665
Journal Information:
Separation and Purification Technology, Journal Name: Separation and Purification Technology Journal Issue: PB Vol. 282; ISSN 1383-5866
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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