Experimental investigation was performed on the recovery of uranium（VI） from Wet Process Phosphoric Acid by the novel liquid surfactant membrane with carrier mediated counter transport mechanism through batch operation.
The membrane carrier used were D₂EHPA and TOPO showing the synergistic effect. The extraction of uranium（VI） was an exothermic reaction and the stripping of uranium complex was an endothermic reaction. The various experimental variables such as temperature of system, concentration of surfactant, stirring speed, W/O ratio, concentration of carrier, concentration of HF had to be properly controlled in order to maintain the membrane stability and the recovery efficiency of uranium. In the transfer mechanism of uranium(VI), both diffusion and stripping reaction were rate controlling steps. By use of ICP-Emission Spectroscopy as an analysis instrument, the efficiency of recovery and membrane breakage were simultaneously measured.