Recycling and Sustainability for Emerging Technologies and Strategic Materials: Poster Session
Sponsored by: TMS Extraction and Processing Division, TMS Light Metals Division, TMS: Recycling and Environmental Technologies Committee
Program Organizers: John Howarter, Purdue University; Mingming Zhang, Baowu Ouyeel Co. Ltd; Elsa Olivetti, Massachusetts Institute of Technology; Hong (Marco) Peng, University of Queensland
Monday 5:30 PM
March 15, 2021
Room: RM 25
Location: TMS2021 Virtual
Session Chair: John Howarter, Purdue University
Computational Modeling of Current Density Distribution and Secondary Resistances for Aluminum Electrorefining in Ionic Liquids: Khalid Nahian1; Yuxiang Peng1; Laurentiu Nastac1; Ramana Reddy2; 1The University of Alabama; 2University of Alabama
A numerical model is developed to simulate the current density distribution and secondary resistances for the aluminum electrorefining process from the room temperature ionic liquid (RTILs) of 1-butyl-3-methylimidazolium chloride and aluminum chloride with the molar ratio of 2:1 (AlCl3: BMIMCl). The materials and geometry are created based on the experimental parameters. The current density distribution was calculated via simulation. The effects of applied voltage, temperature, composition of the electrolyte and the surface roughness of cathode on the secondary resistances are investigated in the present research. It was found that the contact resistance decreases with increasing the potential and the temperature as well as decreasing the surface roughness.
Conductivity of AlCl3-BMIC Ionic liquid Mixtures Containing TiCl4 at Different Temperatures and Molar Ratios: Khalid Nahian1; Aninda Nafis Ahmed1; Pravin S. Shinde1; Ramana G. Reddy1; 1The University of Alabama
The conductivity of the mixture of 1-butyl-3-methylimidazolium chloride (BMIC) with aluminum chloride (AlCl3) and titanium chloride (TiCl4) are systematically investigated over a range of temperature (70 oC- 110 oC) using the electrochemical impedance spectroscopy (EIS) method. The molar ratios of the components are being changed to study the effect of molar ratio on the conductivity. The conductivity data are plotted against temperature to check whether it obeys the Arrhenius law. The activation energy and the density are calculated. The conductivity of the solution increases with increasing temperature for every composition. For molar ratio changing, conductivity increases with increasing the TiCl4 content up to a certain composition then starts to decrease for each temperature. At room temperature, density of the solution increases with increasing the TiCl4 content in the solution.