| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Primary Aluminum Industry - Energy and Emission Reductions: An LMD Symposium in Honor of Halvor Kvande
|
| Presentation Title |
Direct and Indirect CO2 Equivalent Emissions from Primary Aluminium Production |
| Author(s) |
Halvor Kvande, Gudrun Saevarsdottir, Barry Welch |
| On-Site Speaker (Planned) |
Gudrun Saevarsdottir |
| Abstract Scope |
The total global average emissions from primary aluminium production are large, about 16.5 tonnes of CO2 equivalents per tonne of aluminium produced (t CO2e/t Al). Two thirds of the total emissions arise from the source of energy used to generate electricity, because so much of the electricity for aluminium production comes from fossil sources like coal and natural gas. The present paper discusses the emissions from aluminium smelters, based on the requirement of the Aluminium Stewardship Initiative (ASI) that the on-site direct and indirect emissions from all present and future smelters shall be below 8 t CO2e/t Al by 2030 or earlier. Our suggestion is to use the total mine-to-metal emission number instead, thus referring to all aluminium production processes combined. This number is what the public, and also customers and downstream users, would be more interested in. The numerical value should be changed accordingly on a science based approach. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Environmental Effects, |