| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Green dissolution and separation of critical metal from nickel-metal hydride battery waste |
| Author(s) |
Maria C Hespanhol, Kaíque A. M. L. Cruz, Thaís S. Soares, Ueslei G. Favero, Gabriel O. Uebe, Vitor M. O. Silva, Julia S. Rodrigues, Leonardo G. D. Silva, Ana M. Ferreira, Tiago A. Silva |
| On-Site Speaker (Planned) |
Maria C Hespanhol |
| Abstract Scope |
The development of processes that explore secondary resources to mitigate the scarcity of critical raw materials (CRM) is not just a challenge, but an urgent necessity. Nickel-metal hydride (NiMH) batteries, with their chemical composition rich in CRM (15% lanthanides and 4% cobalt by mass), deserve special attention. Therefore, the goal of this work was to investigate the use of the following: i) organic acids or deep eutectic solvent for leaching Co, Ni, Mn, Ce, and La; ii) liquid-liquid systems for lanthanide separation; iii) electrodeposition of nickel and cobalt from NiMH battery waste.
Acknowledgments: CNPq [grant number 305649/2021-3; 407799/2022-2, 383396/2023-9, 117025/2023-2, 116700/2024-6], FAPEMIG [grant number RED-00161-23; APQ-01134-23], CAPES [grant number 88887.956518/2024-00, 88887.677382/2022-00] |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Extraction and Processing, Recycling and Secondary Recovery, Hydrometallurgy |