About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Recycling and Environmental Technologies
|
| Presentation Title |
Recovery, Process Integration, and Challenges in Hydrometallurgical Processing of Molybdenum- and Vanadium-Containing Spent Catalysts |
| Author(s) |
Kumari Richa Rao, Balram Ambade |
| On-Site Speaker (Planned) |
Kumari Richa Rao |
| Abstract Scope |
Spent catalysts from petroleum refining and chemical industries are valuable secondary sources of molybdenum (Mo) and vanadium (V), yet their efficient recovery remains challenging. This paper reviews hydrometallurgical techniques for extracting Mo and V, focusing on leaching, solvent extraction, precipitation and emerging methods like bioleaching and microwave-assisted extraction. Key challenges include selective separation in multi-metal systems, impurities management and process optimization. The study examines leaching mechanisms, emphasizing the role of acid concentration, temperature and catalyst composition on recycling and recovery efficiency. Solvent extraction techniques using organic reagents are analyzed for their selectivity and solvent loss issues. Advanced methods such as ion exchange and electrochemical recovery are explored for improved purity. Environmental concerns, including acidic waste and sustainable reagent alternatives, are addressed alongside economic and regulatory drivers. Future trends point toward biohydrometallurgy and circular economy integration to meet rising demand for critical metals amid resource scarcity. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Hydrometallurgy, Recycling and Secondary Recovery, Sustainability |