Abstract
The solvent extraction of rhenium using TiOA as extractant assisted by ionic liquids from aqueous solutions was investigated. The molalities of ReO4– after extraction were measured at impurity ionic strength from 0.2 to 2.0 mol·kg–1 at temperatures from 293.15 to 318.15 K in the aqueous phase. Standard extraction constants K0 at different temperatures were obtained by the Pitzer polynomial approximation method. Thermodynamic properties for the extraction procedure were also calculated.
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