Abstract

The extraction of UO22+ from nitrate solution has been carried out using DHDECMP. Different parameters affecting the distribution coefficient of UO22+ have been determined. The extraction of UO22+ 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 UO22+ to a great extent. LogD for UO22+ 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.

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