Solvent extraction studies on phosphoric acid produced by the wet process

This work describes the recovery of uranium from wet process phosphoric acid using solvent-extraction technique. Extractant such as Tri-n-octyl phosphine oxide [TOPO], Tri-n-octy. Amine [TOA] and Methyl iso butyl ketone [MIBK] have been used. The factors affecting the extraction of Uranium were investigated. The optimum conditions for the extraction were determined and it is found that the extraction of uranium is effected by the presence of iron, organic matter and sulfate ions. Also, it was found that the extraction of uranium by TOPO, TOA is exothermic but the reaction is endothermic with MIBK