| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Energy Technologies and CO2 Management
|
| Presentation Title |
Greenhouse Gas Life Cycle Assessment of Traditional and Biomass-Integrated Steelmaking Routes |
| Author(s) |
Avash Kumar Saha, Chunlin Chen, Nawshad Haque, Arup Kumar Mandal |
| On-Site Speaker (Planned) |
Avash Kumar Saha |
| Abstract Scope |
This study conducts a cradle to gate life cycle assessment (LCA) to evaluate the greenhouse gas (GHG) emissions of three steelmaking processes: integrated or blast furnace and basic oxygen furnace (BF-BOF), direct reduced iron electric arc furnace (DRI-EAF), and a biomass-based DRI-EAF route. The functional unit is one tonne of crude steel. Inputs such as raw materials, energy consumption, and GHG emissions are reported for each route. The analysis reveals that the biomass-integrated DRI-EAF route achieves the lowest GHG emissions, approximately 0.67 tonnes of CO2e per tonne of crude steel, compared to 0.78 tonne for the conventional DRI-EAF route and 2.04 tonne for the BF-BOF route and. The significant reduction for biomass-integrated routes is primarily attributed to the substitution of coke with sustainably sourced biomass as a heating and a reducing agent. Biomass, when sourced responsibly, is carbon-neutral, further enhancing the environmental benefits of this route. The study also discusses the potential challenges associated with biomass adoption, including resource availability, economic feasibility, and the impact on steel quality. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Environmental Effects, Extraction and Processing |