| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Recycling and Sustainability for Emerging Technologies and Strategic Materials
|
| Presentation Title |
Electrochemical Separation of Aluminum from Mixed Scrap Using Ionic Liquids |
| Author(s) |
Aninda Nafis Ahmed, Ramana G. Reddy |
| On-Site Speaker (Planned) |
Aninda Nafis Ahmed |
| Abstract Scope |
Electrodeposition of aluminum experiments were conducted in three types of ionic liquids (IL); EMIC, BMIC and HMIC with AlCl3. The molar ratio of IL:AlCl3=1:2 was determined to be optimum molar ratio for all three ILs. Over 170 A/m2 current density with more than 85% current efficiency was obtained for EMIC. Similarly, for BMIC, over 300 A/m2 current density was found with more than 85% current efficiency and for HMIC, more than 250 A/m2 of current density with over 85% current efficiency was obtained. Based on the lab-scale experimental findings, scale up experiments were carried out for BMIC:AlCl3=1:2 molar ratio. Significant increase in current density was observed when higher potentials were applied. More than 220 A/m2 of current density was found in a scale up system. Additionally, lower distance between anode and cathode (~1cm) and higher stirring rate (120 rpm) produced higher current densities. Outcome of this work would facilitate the scale up studies for the electrochemical separation of aluminum from mixed scrap. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electrometallurgy, Extraction and Processing, Recycling and Secondary Recovery |