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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

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Characterisation and Techno-economics of a Process to Recover Value from E-waste Materials
Computational Modeling of Current Density Distribution and Secondary Resistances for Aluminum Electrorefining in Ionic Liquids
Conductivity of AlCl3-BMIC Ionic liquid Mixtures Containing TiCl4 at Different Temperatures and Molar Ratios
Copper Separation from Steel Scrap
Copper Supply for Electric Vehicles and Impacts on the Recycling Sector
Development and Impact of High-performance Al Alloys Alloyed with Rare Earth Co-products
Ecodesign and Strategic Design of Alloys by Combinatorial Optimisation
Electrochemical Separation of Aluminum from Mixed Scrap Using Ionic Liquids
High-temperature Oxidation of Explosion Welded Tantalum-tungsten Alloy on Steel Substrate as a Potential Technique for Recycling
Hydrometallurgical Recycling of Bauxite Residue
Improvement of Steel Scrap Recycling: Optical Recognition of Cu Impurities Using Machine Learning
Investigation of Ionic Liquids Isolated Iron for Ductile Iron Castings
Rare Earth Magnet or Ferroalloy? What Steel Processing Can Teach Us about Magnet Sludge Recycling.
Recycling of Spent SCR Catalyst to Recover Vanadium and Tungsten by Hydrometallurgical Routes
The Separation of Nickel and Cobalt from Lithium-ion Battery Leachate
Uncertainty Analysis and Reduction for Environmental Impact Modeling of Emerging Manufacturing Technologies

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