FIELD: chemistry.
SUBSTANCE: holmium (III) salts extraction method involves liquid extraction using isooctyl alcohol as an extractant. Solvate as holmium (III) dodecyl sulfate is conveyed through the aqueous to the organic phase. Anionic surfactant such as sodium dodecyl sulfate is applied in a concentration corresponding to the reaction stoichiometry: Ho+3+3C12H25OSO3Na=Ho[C12H25OSO3]3+3Na+, where Ho+3 - holmium cation, C12H25OSO3Na - is sodium dodecyl sulfate, Ho[C12H25OSO3]3 holmium (III) dodecyl sulfate solvate. Liquid extraction is carried out at pH 3.0-6.0, which allows to achieve 99% recovery of holmium (III) salts from aqueous solutions.
EFFECT: increased degree of holmium III salt extraction.
1 dwg, 1 ex
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