Abstract
The extraction of UO2,(2+) from nitrate solution has been carried out using DHDECMP. Different parameters affecting the distribution coefficient of UO2,(2+) have been determined. The extraction of UO2,(2+) was found to have second order dependency on both extractant and H+ concentrations. Addition of some bases as TBP and TOPO to the phosphonate extractant increased the distribution of UO2,(2+) to a great extent. Logo for UO2,(2+) with respect to both synergistic bases was found to be a first order dependent. The thermodynamic parameters have been calculated and the extraction mechanisms have been suggested.