An alternative copper electrowinning pro

This paper shows the preliminary results of an alternative to the classic electrowinning copper process using a cell based on reactive electrodialysis, which consists of two compartments separated by an anionic membrane, one of which contains the copper sulphate catholyte, where the cathode is located, and the other compartment contains the ferrous sulfate anolyte, where the anode is located. In this type of cell, the anodic reaction is the oxidation of iron (Fe2+ to Fe3+), which consumes less energy than the classic water oxidation. Furthermore, this new anodic reaction does not produce acid mist. The study addresses the shortcomings of conventional copper electrowinning, such as low electrolyte flow and energy inefficiency caused by anodic water decomposition, highlighting alternative anodic reactions that facilitate energy savings and improve overall efficiency. Experimental results indicate that adjustments in electrolyte flow and temperature have significant impacts on the energy consumption and cell potential, demonstrating the feasibility of the alternative process for industrial application.