Selective Removal of Copper from Nickel-Copper Leach Solution by Electrolysis Cells with High Convection
| dc.contributor.author | Kartal, L | |
| dc.date.accessioned | 2026-03-31T13:21:03Z | |
| dc.date.available | 2026-03-31T13:21:03Z | |
| dc.date.issued | 2025 | |
| dc.description.abstract | In this study, the selective separation of copper ions (Cu2+) from leaching solutions containing both Cu2+ and nickel ions (Ni2+) was investigated using electrolysis cells with high convection (Chemelec). Firstly, the electrochemical behavior of solutions containing only single Cu2+, single Ni2+, and both Cu2+ and Ni2+ was investigated using cyclic voltammetry (CV). Cu2+ reduction was observed at -0.15 V in solutions that contained either simply Cu2+ or a Cu2+-Ni2+ combination, whereas oxidation happened at 0.17 V in a single step. The CV analysis of a Ni2+-containing solution at pH 1 revealed that Ni2+ was not reduced. Potentiostatic selective Cu2+ reduction experiments were conducted at cathode potentials of -0.3 V, -0.4 V, and -0.5 V. Increasing the potential from -0.3 V to -0.5 V enhanced copper recovery from 84% to 94%. The current efficiency remained above 90% across all three potentials during 3 h experiments. At -0.5 V, extending the experiment time from 3 h to 5 h resulted in copper recovery exceeding 99%, while current efficiency declined from 90% to 80%. The cathode products were analyzed using X-ray diffraction (XRD), revealing that the main phase consisted of metallic copper. | |
| dc.identifier.doi | 10.3390/met15040432 | |
| dc.identifier.issn | 2075-4701 | |
| dc.identifier.issue | 4 | |
| dc.identifier.uri | http://dx.doi.org/10.3390/met15040432 | |
| dc.identifier.uri | https://hdl.handle.net/11491/9501 | |
| dc.identifier.volume | 15 | |
| dc.identifier.wos | WOS:001475123900001 | |
| dc.language.iso | en | |
| dc.publisher | MDPI | |
| dc.relation.ispartof | METALS-BASEL | |
| dc.subject | copper recovery | |
| dc.subject | potentiostatic separation | |
| dc.subject | Cu-Ni solutions | |
| dc.subject | electrolytic recovery | |
| dc.title | Selective Removal of Copper from Nickel-Copper Leach Solution by Electrolysis Cells with High Convection | |
| dc.type | Article |
