TY - JOUR ID - 86278 TI - Removal of copper ions from dilute sulfuric acid solutions: Effect of solution composition and applied potential JO - International Journal of Mining and Geo-Engineering JA - IJMGE LA - en SN - 2345-6930 AU - Hassani Sadrabadi, Saeed AU - Naderi, Hojat AU - Zare, Hamid Reza AU - Moshtaghioun, Seyed Mohammad AD - Mining & Metallurgical Engineering Department, Yazd University, Yazd, Iran AD - Department of Chemistry, Yazd University, Yazd, Iran AD - Department of Biology, Yazd University, Yazd, Iran Y1 - 2022 PY - 2022 VL - 56 IS - 3 SP - 239 EP - 247 KW - Chronoamperometry KW - Copper KW - Cyclic voltammetry KW - Dilute solution KW - Electrodeposition KW - Diffusion coefficient DO - 10.22059/ijmge.2022.329665.594927 N2 - 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. UR - https://ijmge.ut.ac.ir/article_86278.html L1 - https://ijmge.ut.ac.ir/article_86278_4612abd109a9f9318fced52d9790f6e5.pdf ER -