Cobalt extraction from spent lithium-ion battery cathode material using a sulfuric acid solution containing SO2

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dc.citation.epage1018
dc.citation.issue2
dc.citation.rankM22
dc.citation.spage1008
dc.citation.volume25
dc.contributor.authorMedić, Dragana
dc.contributor.authorSokić, Miroslav
dc.contributor.authorNujkić, Maja
dc.contributor.authorĐorđievski, Stefan
dc.contributor.authorMilić, Snežana
dc.contributor.authorAlagić, Slađana
dc.contributor.authorAntonijević, Milan
dc.date.accessioned2023-12-25T21:45:33Z
dc.date.available2023-12-25T21:45:33Z
dc.date.issued2023
dc.description.abstractTo increase the degree of cobalt (Co) extraction, the process of the cathode material leaching was performed in a sulfuric acid (H2SO4) solution containing sulfur dioxide (SO2) as a reducing agent. To provide a high resolution of the obtained results, frequent monitoring of Co concentrations in leached solution was conducted using an ultraviolet–visible spectrophotometer with several specific modifications related to the connection of the reaction vessel with the instrumental cuvette. The maximum degree of Co leaching (99.4%) was achieved with H2SO4 concentration of 3 mol/L, solid phase concentration of 33 g/L, temperature of 85 °C, SO2 volume flow of 2 L/min, and leaching time of 60 min. The results of the performed kinetic analyses indicated that the Avrami equation best describes the investigated leaching process, which later was supported by the results of X-ray diffraction and scanning electron microscopy–energy-dispersive X-ray spectroscopy analyses. Also, the activation energy of 28 ± 3 kJ/mol is in favor of the fact that the process of Co leaching was controlled by the factors, such as diffusion and chemical reaction. The results of this study indicated that SO2 can be used as an effective reducing agent in the investigated process.
dc.identifier.doi10.1007/s10163-022-01580-w
dc.identifier.issn1438-4957
dc.identifier.issn1611-8227
dc.identifier.urihttps://repozitorijum.tfbor.bg.ac.rs/handle/123456789/771
dc.language.isoen
dc.publisherSpringer Nature, Japan
dc.rights.licenseARR
dc.sourceJournal of Material Cycles and Waste Management
dc.subjectCathode material
dc.subjectAcid leaching
dc.subjectSulfur dioxide
dc.subjectKinetics
dc.titleCobalt extraction from spent lithium-ion battery cathode material using a sulfuric acid solution containing SO2
dc.typearticle
dc.type.versionpublishedVersion

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