Removal of copper ions from dilute sulfuric acid solutions: Effect of solution composition and applied potential | ||
| International Journal of Mining and Geo-Engineering | ||
| مقاله 6، دوره 56، شماره 3، پاییز 2022، صفحه 239-247 اصل مقاله (735.21 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/ijmge.2022.329665.594927 | ||
| نویسندگان | ||
| Saeed Hassani Sadrabadi1؛ Hojat Naderi* 1؛ Hamid Reza Zare2؛ Seyed Mohammad Moshtaghioun3 | ||
| 1Mining & Metallurgical Engineering Department, Yazd University, Yazd, Iran | ||
| 2Department of Chemistry, Yazd University, Yazd, Iran | ||
| 3Department of Biology, Yazd University, Yazd, Iran | ||
| چکیده | ||
| 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. | ||
| کلیدواژهها | ||
| Chronoamperometry؛ Copper؛ Cyclic voltammetry؛ Dilute solution؛ Electrodeposition؛ Diffusion coefficient | ||
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