Solvent extraction of samarium from aqueous nitrate solution by Cyanex301 and D2EHPA

The synergistic effect showed that addition of D2EHPA to Cyanex301 extraction system led to an increase in extraction efficiency of Cyanex301 in low concentration range (0.01-0.05 M). Furthermore, mixtures of the extractant provided better stripping performance at low acid concentration in comparison with D2EHPA system. The values of the thermodynamic parameters, equilibrium constants and stoichiometric coefficients for both extractants and their mixtures were calculated.