Synergistic Effect on Extraction of Nickel and Cobalt from Synthetic Sulfate Solution Using DEHPA and CYANEX 272 as Extractants

Abstract

The aim of this work is to assess the synergistic effect of the DEHPA and Cyanex272 mixture on extraction percentage of the nickel and cobalt from synthetic solution, which contain manganese, magnesium, calcium and copper. The synergistic solvent extraction systems used in this work are Cyanex 272/DEPHA in different ratios mixtures, with a fixed total extractant concentration of 20%vol. The results indicated extraction percent of each metal ion improved with increasing of the pH. On the other hand, the cobalt extraction curves was shifted to right in so far that DEHPA increases in the organic phase, However, the nickel curve had no significant changed,