About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Circular Metallurgy: Design, Technology, Application
|
| Presentation Title |
Circular hydrometallurgy: from direct electrolysis of iron oxides to energy conversion and storage material synthesis and recycling |
| Author(s) |
George P. Demopoulos |
| On-Site Speaker (Planned) |
George P. Demopoulos |
| Abstract Scope |
In this presentation, examples of emerging and conceptual circular hydrometallurgical processes will be described aiming at the development of sustainable solutions for critical material recovery, production, and recycling from nano-photocatalysts and CO2-free iron making to Li-ion battery (LIB) manufacturing. These processes have as common foundation, the regulation of crystallization, adsorption, and electrochemical-redox transformations to enable production of solids with desired attributes. Iron as the number one structural material responsible for huge CO2 emissions has prompted research into its production by direct electrolysis of iron oxides, a system under intensive R&D. In another application the photocatalytic recovery of selenium from metallurgical effluents using circular nanoTiO2 catalysts will be described. In terms of battery material research, we will report on precursor (Ni(OH)2) cathode material production, the synthesis of electrode materials (LiMPO4 and TiNb2O7), and the direct recycling and upcycling of spent LiFePO4 and NMC cathodes for fully circular LIB manufacturing. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Energy Conversion and Storage, Hydrometallurgy, Recycling and Secondary Recovery |