اميرحسين هراتيان

In this study, the extraction separation of nickel an‎d magnesium from a sulfate solution containing both metals was experimentally studied an‎d examined. The impact of various parameters, including pH, the ratio of organic to aqueous phase, temperature, an‎d contact time between the two phases, on the extraction percentage of nickel an‎d magnesium using Cyanex 272 an‎d DPA, an‎d the combination of these two solvents, was eva‎luated on the wastewater generated from the nickel ingot production plant of Mahsan Zinc Company. Then, optimization was carried out on the obtained results using Design Expert software, an‎d it was determined that the optimal conditions for achieving equal sensitivity to the non-extraction of both nickel an‎d magnesium were using the synergistic combination of the two solvents, Cyanex 272 an‎d DPA, with a 25-minute contact time, an organic-to-aqueous phase ratio of 3, an‎d a pH of approximately 5.5. In this condition, where the sensitivity to the extraction of both metals is equal, around 64% of magnesium an‎d 15% of nickel would be extracted. Due to the relatively high extraction of nickel simultaneously, optimization was also carried out under conditions where the extraction of nickel was restricted, an‎d it was predicted that using Cyanex 272 at a pH of 5.1 an‎d an organic-to-aqueous phase ratio of 3 would result in approximately 40% magnesium extraction an‎d only about 2% nickel extraction. Finally, an experimental test confirmed the prediction of extracting 40% magnesium an‎d 20% nickel at room temperature, with a pH of 5.1 an‎d an organic-to-aqueous phase ratio of 3 using Cyanex 272. Subsequently, after three stages of contact, 97% of magnesium was separated with only 7% nickel extraction from the original solution.

استخراج با حلال , جداسازي منيزيم و نيكل , سيانكس 272 , دپا

Solvent extraction , Mg an‎d Ni separation , cyanex272 , D2HPA

Amirhossein Haratian

Ahad ghaemi