FIELD: chemistry.
SUBSTANCE: terbium (III) cation floatation extraction process employs as the organic phase an isooctyl alcohol and as the surfactant-type collector - sodium dodecyl sulphate, in a concentration which corresponds to the stoichiometric reaction: Tb+3+3NaDS=Tb(DS)3+3Na+, where Tb+3 is a terbium (III) cation, DS- is a dodecyl sulphate ion. Floatation extraction is carried out at pH=7.5-8.0 and ratio of the organic phase to the aqueous phase of 1/20-1/40.
EFFECT: high degree of extraction.
2 dwg
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