@article { author = {Hassani Sadrabadi, Saeed and Naderi, Hojat and Zare, Hamid Reza and Moshtaghioun, Seyed Mohammad}, title = {Removal of copper ions from dilute sulfuric acid solutions: Effect of solution composition and applied potential}, journal = {International Journal of Mining and Geo-Engineering}, volume = {56}, number = {3}, pages = {239-247}, year = {2022}, publisher = {University of Tehran}, issn = {2345-6930}, eissn = {2345-6949}, doi = {10.22059/ijmge.2022.329665.594927}, abstract = {Removal of copper from synthesized and real dilute sulfuric acid solutions was investigated. Effects of copper, iron concentrations and applied potential were studied. In pure copper solutions, increasing the Cu2+ concentration from 1000 to 5000 mg.L-1 increased the copper recovery from about 30-300% depending on the cathode potential and decreased the energy consumption by about 30%. Also, with increasing the acid concentration from 15 to 50 g.L-1 an about 25% increase in copper recovery and a 30% decrease in energy consumption were observed. The addition of Fe2+ to the solution improved the ionic conductivity and so that the copper recovery. The specified energy consumption for the real leaching solutions increased to 31-47 KWh.kg-1. The diffusion coefficients for several synthesized and real copper electrowinning electrolytes were determined. Moreover, the maximum value of the diffusion coefficient (D) was obtained 2.27*10-4 cm2.s-1 for the pure copper solution at a concentration of 1000 mg.L-1 Cu2+ which was higher than impure and real solutions.}, keywords = {Chronoamperometry,Copper,Cyclic voltammetry,Dilute solution,Electrodeposition,Diffusion coefficient}, url = {https://ijmge.ut.ac.ir/article_86278.html}, eprint = {https://ijmge.ut.ac.ir/article_86278_4612abd109a9f9318fced52d9790f6e5.pdf} }