Solubility and Extraction of Metal Ions in Inorganic Acid–Potassium Bis(alkylpolyoxyethylene)phosphate–Water Systems

S. A. Denisova; Денисова С. А.; D. A. Svezhov; Свежов Д. А.; A. M. Elokhov; Елохов А. М.

doi:10.31857/S0044453723020048

Solubility and Extraction of Metal Ions in Inorganic Acid–Potassium Bis(alkylpolyoxyethylene)phosphate–Water Systems

Autores: Denisova S.A.¹, Svezhov D.A.¹, Elokhov A.M.¹
Afiliações:
1. Perm National Research University
Edição: Volume 97, Nº 2 (2023)
Páginas: 241-246
Seção: ФИЗИЧЕСКАЯ ХИМИЯ РАСТВОРОВ
##submission.dateSubmitted##: 27.02.2025
##submission.datePublished##: 01.02.2023
URL: https://freezetech.ru/0044-4537/article/view/668836
DOI: https://doi.org/10.31857/S0044453723020048
EDN: https://elibrary.ru/DRHPBV
ID: 668836

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Resumo

The boundaries of the segregation region in sulfuric (nitric, chloric, hydrochloric) acid–potassium bis(alkylpolyoxyethylene) phosphate–water systems at 25°С have been determined by isothermal titration. The salting-out ability of the inorganic acid was found to increase with a decrease in the absolute value of the Gibbs energy of anion hydration. Based on the obtained diagrams, the optimum parameters of extraction were determined, and tendencies in the distribution of some metal ions in the sulfuric acid–potassium bis(alkylpolyoxyethylene) phosphate–water system were studied. Conditions for quantitative extraction of thallium(III) in the presence of alkali metal halides were found.

Palavras-chave

anionic surfactants, liquid extraction, halide acid complexes, salting-out

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