| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Recovery and Separation of Vanadium and Tungsten from Spent SCR Catalyst by Hydrometallurgical/ Hybrid Routes |
| Author(s) |
Rajesh Kumar Jyothi, Ana Belen Cueva Sola, Jong Hyuk Jeon, Jin-Young Lee |
| On-Site Speaker (Planned) |
Rajesh Kumar Jyothi |
| Abstract Scope |
One of the most harmful air contaminants are nitrogen oxides (NOX) produced in combustion processes. To reduce the effluents the most effective technology to date is selective catalytic reduction (SCR). Due to the increasingly strict environmental regulations, the demand of SCR catalyst has increased and inevitably, the disposal of spent catalyst increased accordingly. Most catalysts for stationary applications contain 0.5-1.5% wt V2O5 and 7-10% wt of WO3 in a TiO2 matrix and due to the environmental burden of disposal and the necessity of finding secondary sources for the valuable metals, the recycling of spent SCR catalyst becomes a pressing issue.
During this investigation, two tertiary amines were compared to observe the effectiveness in the extraction of vanadium and tungsten, the enrichment process was optimized and the loaded organic (9 times concentration) went through a crowding process. Vanadium was replaced by tungsten to obtain a highly pure tungsten loaded organic. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Recycling and Secondary Recovery, Extraction and Processing, Hydrometallurgy |