Optimization of the Selective Dissolution of Li from the Spent Li-ion Batteries using Oxalic Acid by a Response Surface Methodology
| Autor: | H. Mirzaaei ghasabe, A. Zakeri, Sh. Mirdamadi, M. Ghorbanzadeh |
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| Jazyk: | perština |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Journal of Advanced Materials in Engineering, Vol 37, Iss 3, Pp 87-105 (2018) |
| Druh dokumentu: | article |
| ISSN: | 2251-600X 2423-5733 |
| Popis: | In this study, the recovery of lithium from the cathode of the spent Li-ion batteries of the LiNixMnyCozO2 type was investigated. After complete discharging and dismantling, the cathodic section was cut and its aluminum content was selectively dissolved in 2.5 M NaOH solution at room temperature for 2 hr. In the next step, selective dissolution of lithium by oxalic acid from the de-aluminized cathode material was investigated and optimized using the response surface methodology of the central composite design. The effect of three parameters of time (35-100 min), temperature (40-70 °C), and oxalic acid concentration (0.5-1.2 M) on the lithium recovery percentage and manganese concentration was studied as the response variables. According to the statistical analysis of the results and the developed models, an optimum condition (T = 70 °C, t = 122 min and oxalic acid concentration of 1.1 M) was suggested and verified experimentally, resulting in the lithium recovery of about 95% and Mn2+ concentration of about 110 mg/L. |
| Databáze: | Directory of Open Access Journals |
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