| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Recycling and Sustainability for Emerging Technologies and Strategic Materials
|
| Presentation Title |
Recycling of Spent SCR Catalyst to Recover Vanadium and Tungsten by Hydrometallurgical Routes |
| Author(s) |
Ana Belen Cueva-Sola, Jin-Young Lee, Rajesh Kumar Jyothi |
| On-Site Speaker (Planned) |
Ana Belen Cueva-Sola |
| Abstract Scope |
Currently selective catalytic reduction (SCR) catalyst is the most promising technology to reduce the air pollution caused by nitrogen oxides (NOx) emissions in industries. Due to the increasing demand of catalyst and the limited lifespan of them, after deactivation, they usually end up in landfills posing a major environmental issue. The most widely used catalyst for stationary applications contains around 0.5-1.5% wt V2O5 and 7-10% wt of WO3 in a TiO2 matrix and owing to the vast uses of vanadium and tungsten and the necessity of replacing primary ores with secondary sources makes the recovery of these metals a major motivation for this research.
During this experimental study, the leach liquor obtained after titanium selective leaching containing only vanadium and tungsten was processed using liquid-liquid extraction. The optimum conditions for extraction and stripping were derived and separation of vanadium and tungsten was proposed in a variety of hydrometallurgical routes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Hydrometallurgy, Recycling and Secondary Recovery |