Separation of Co(II) Over Ni(II) from Chloride Leached Solution of Spent Li-Ion Batteries Using Cyphos IL104
- Authors
- Ilyas, Sadia; Kim, Hyunjung; Srivastava, Rajiv Ranjan
- Issue Date
- Feb-2023
- Publisher
- Springer Science and Business Media Deutschland GmbH
- Keywords
- Hydrometallurgical recycling; Ionic liquid; Li-ion batteries
- Citation
- Minerals, Metals and Materials Series, pp.107 - 116
- Indexed
- SCOPUS
- Journal Title
- Minerals, Metals and Materials Series
- Start Page
- 107
- End Page
- 116
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/186011
- DOI
- 10.1007/978-3-031-22765-3_11
- ISSN
- 2367-1181
- Abstract
- The hydrometallurgical separation of cobalt and nickel was achieved from HCl leached solution of spent Li-ion batteries, while applying Cyphos IL104 as a potential extractant. Cobalt extraction significantly increases with increasing Cyphos IL104 and Cl− ion concentrations, and equilibrium pH (pHeq). Under the optimized condition of 0.8 mol·L−1 Cyphos IL104, 3.0 mol·L−1 Cl− ions, pHeq value 5.0, and O/A ratio of 2/3 could extract >99% Co with only 3% Ni into the organic phase. The back-extraction of cobalt performed with 2.0 mol·L−1 H2SO4 solution yielded 99.95% stripping efficiency and was crystallized to obtain high-pure CoSO4.xH2O crystals.
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