Dissolution of metals in NCM622 cathode through the Dissimilatory process with Na-lactate by
| Autor: | Sang-Hee Park, Haesung Jung |
|---|---|
| Jazyk: | English<br />Korean |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | 대한환경공학회지, Vol 46, Iss 10, Pp 551-558 (2024) |
| Druh dokumentu: | article |
| ISSN: | 1225-5025 2383-7810 |
| DOI: | 10.4491/KSEE.2024.46.10.551 |
| Popis: | Objectives The objective of this study is to confirm the possibility of reduction and consequent dissolution of Li, Ni, Co, and Mn from NCM622 cathodes in spent Li-ion batteries through the anaerobic respiration with Na-lactate by Shewanella putrefaciens. Methods The method involves using anaerobic microbial respiration to mimic dissimilatory metal oxide reduction, allowing metals to be leached from NCM622 cathodes (LiNi0.6Co0.2Mn0.2O2) under near-neutral pH conditions (~7.5). Results and Discussion The results show that approximately 26 wt% of the total Li, Ni, Co, and Mn were successfully leached into the solution within two weeks. This approach differs significantly from conventional acidic leaching processes, offering a more environmentally friendly and sustainable alternative. In addition, we provide quantitative information regarding the dissolution of NCM622 when it is exposed in environmental systems. Conclusion In conclusion, microbial-based metal leaching presents a novel, sustainable pathway for recovering metals from spent Li-ion batteries, addressing environmental concerns and reducing dependence on traditional energy-intensive recovery methods. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|