RT Journal Article
T1 A comparison of batch and semi-batch reactors for leaching battery cathodes (LiCoO2) under controlled addition of HCl and H2O2
A1 Cerrillo-González, María del Mar
A1 Villén-Guzmán, María Dolores
A1 Rivas-Bascon, Alvaro
A1 Rodríguez-Maroto, José Miguel
A1 Paz-García, Juan Manuel
K1 Lixiviación
K1 Pilas de litio
K1 Reciclado
AB Recovery of cobalt and lithium from end-of-life Li-ion battery wastes have been evaluated in batch and semi-batch leaching systems. In this preliminary study, HCl and H2O2 were used as leaching and reducing agents,respectively. The comparison of batch and semi-batch processes was carried out, obtaining an improvement from40% to 70% in the metal mass extracted (i.e. Co and Li) for semi-batch experiments under the same experimentalconditions. Effects of the initial concentration of reducing and leaching agents were evaluated for a semi-batchsystem in which the acid was continuously fed to maintain a constant pH value. From experimental results, it wasfound that the concentration of H2O2 plays an important role in the leaching process in terms of selectivity. Forthe experiments carried out using 0.1 M of HCl and 1 M of H2O2, the percentage of Li and Co extracted was 90%for a leaching time of 30 min. The double-controlled addition of HCl and H2O2 to the semi-batch system allowsthe reduction of the H2O2 concentration to 0.5 M. The optimization of reactants entails not only the decrease oftheir consumption but also maximize the selectivity of the reactions desired, which represents promising resultsfor the environmental sustainability of the process. Further work will examine the fate of chloride ions in theprocess.
PB Elsevier
YR 2024
FD 2024-08
LK https://hdl.handle.net/10630/31413
UL https://hdl.handle.net/10630/31413
LA spa
NO Cerrillo-Gonzalez, Maria del Mar , Villen-Guzman, Maria, Rivas-Bascon , Alvaro ,Rodriguez-Maroto, Jose Miguel , Paz-Garcia, Juan Manuel (2024). A comparison of batch and semi-batch reactors for leaching battery cathodes (LiCoO2) under controlled addition of HCl and H2O2, Hydrometallurgy, Volume 227, 2024, 106334, ISSN 0304-386X
NO Funding for open access charge: Universidad de Málaga / CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 26 feb 2026