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Salting out of potassium bis(alkylpolyoxyethylene)phosphate with ammonium salts as the base of micellar extraction processes development

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Abstract

Solubility in the ammonium sulfate (chloride, nitrate)–potassium bis(alkylpolyoxyethylene)-phosphate (oxyphos B)–water pseudo three-component systems has been studied over wide temperature range. The salting-out activity of the ammonium salts towards oxyphos B has been compared, and the possibility of micellar extraction in the studied systems has been demonstrated. Using the ammonium chloride–oxyphos B–water system as an example, extraction of a series of metal ions at 75°С has been performed and compared with the gel-extraction in the ammonium sulfate–oxyphos B–water system at 25°С. It has been found that heating leads to the separation at lower concentration of the components and accelerates the system equilibration.

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Correspondence to A. M. Elokhov.

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Original Russian Text © A.M. Elokhov, A.E. Lesnov, O.S. Kudryashova, 2015, published in Zhurnal Obshchei Khimii, 2015, Vol. 85, No. 11, pp. 1918–1923.

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Elokhov, A.M., Lesnov, A.E. & Kudryashova, O.S. Salting out of potassium bis(alkylpolyoxyethylene)phosphate with ammonium salts as the base of micellar extraction processes development. Russ J Gen Chem 85, 2657–2662 (2015). https://doi.org/10.1134/S1070363215110250

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  • DOI: https://doi.org/10.1134/S1070363215110250

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