| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Recycling of Strategic Metals from Spent Hydro-Desulphurization Catalysts Using Microbial Activities |
| Author(s) |
Sadia Ilyas, Rajiv Ranjan Srivastava |
| On-Site Speaker (Planned) |
Sadia Ilyas |
| Abstract Scope |
The depletion of strategic metal resources coupled with environmental pollution have heightened the urgency for sustainable recycling of spent hydrodesulphurization (HDS) catalysts generated in petroleum refining process. The high concentrations of strategic metals such as molybdenum, nickel, cobalt, and vanadium present in spent HDS catalysts make them a valuable secondary resource for recycling within the refining industry's circular approach. Over the past decade, the use of microorganisms to mobilize metals from spent catalysts has emerged as a promising sustainable approach to metal recycling. Herein, we reviewed extensive studies on the interactions between microbes and metals, leveraging chemoautotrophic bacteria and heterotrophic fungi for the extraction of metals from spent HDS catalysts. It elucidates the formation of soluble metal species from high-sulfur-containing feedstocks, supported by a rigorous analysis of the underlying solution chemistry. It also provides critical insights to key strategies for realizing the circular economy in the refining industry and beyond. |
| Proceedings Inclusion? |
Planned: |