Empirical equations for the prediction of third phase formation limits in the extraction of thorium nitrate by tri iso amyl phosphate (TiAP)
Third phase formation in the extraction of Th(IV) by TiAP in various n alkane diluents was investigated under different conditions. The limiting organic concentrations (LOC) for third phase formation for TiAP/n alkane/thorium nitrate systems were measured as a function of various parameters for deriving empirical equations with respect to extractant concentration, equilibrium aqueous phase nitric acid concentration [HNO3]aq,eq) temperature and number of carbon atoms per diluent for the prediction of LOC. Our results show a very good agreement between the LOC values calculated with empirical equations derived from two different approaches.
Journal of Radioanalytical and Nuclear Chemistry