| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Selective Lithium Recovery from Brines Using Hydrothermally Treated Titania Slag |
| Author(s) |
Raja Shekhar Marthi, York Reed Smith |
| On-Site Speaker (Planned) |
Raja Shekhar Marthi |
| Abstract Scope |
Ion-exchange adsorbents such as delithiated lithium titanium oxides (LTOs) are highly effective for selective lithium adsorption from the brines. In this work, we have synthesized LTO from waste titania slag and immobilized on a diatomaceous earth (DE) support. Titania slag was hydrothermally treated in alkaline solution to remove slag impurities. Acidic leaching followed by hydrolysis was performed to dissolve impurities and immobilize TiO2 on DE. Subsequent solid-state synthesis with Li2CO3 resulted in LTO formation. Batch adsorption studies show that around 99 % of lithium was adsorbed from a buffered 50 ppm Li. Thermodynamic and kinetic studies show the lithium adsorption to be an endothermic chemisorption process. The LTO-DE composite was also tested with Great Salt Lake samples and its performance evaluated. |
| Proceedings Inclusion? |
Planned: |