| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Industry Emissions Measurement, Reporting & Reduction
|
| Presentation Title |
Reaching Zero Carbon Emissions in Aluminium Electrolysis |
| Author(s) |
Gudrun A. Saevarsdottir, Sai Krishna Padamata, Brandon N. Velasquez, Halvor Kvande |
| On-Site Speaker (Planned) |
Gudrun A. Saevarsdottir |
| Abstract Scope |
The global community has set a goal of carbon neutrality by 2050. The almost one fourth of global emissions, attributed to direct emissions from industrial processes, must be addressed by developing zero-carbon alternatives for each process, including the production of aluminium. Several companies and research institutions are working on aluminium electrolysis using oxygen evolving inert anodes, recent developments having been quite promising. For existing smelters, carbon capture and sequestration may become a realistic alternative, depending upon successful adaptation of the flue-gas system enabling up-concentration of CO2 in the flue gas. A third alternative is the electrolysis of aluminium chloride, keeping chlorine and carbon in separate recycling loops. This paper gives a review of the efforts to date, from industry and academia, to decarbonise the electrolysis of aluminium. The development of the largest part of the carbon footprint, arising from the production of the electrical energy used, is also discussed. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Sustainability, Environmental Effects |