1985 Volume 11 Issue 5 Pages 515-519
The extraction equilibrium of lanthanum by D2EHPA was measured at 298K, using an industrial-grade diluent, SHELLSOL®-K. The composition of the organic phase species is LaR3·3HR, which is identical to that obtained for the case of reagent-grade diluents and is reported in the literature. The aqueous distribution of D2EHPA was also measured, and the equilibrium constants of this extractant were determined. Addition of the surfactant, Span 80®, to the present system did not change the extraction constant for lanthanum.
