<p>The steel industry is one of the key engines of India’s economic growth and also greatly influences the country’s greenhouse gas (GHG) emissions. By 2030, India’s crude steel output is predicted to almost triple, so decarbonizing this difficult sector becomes even more important. This paper examines the present carbon footprint of the Indian steel business, investigates domestic and international decarbonisation projects, and proposes combined measures to help to build a low-carbon future. Important approaches are the adoption of hydrogen-based direct reduced iron (DRI) processes, increased recycling using renewable energy-powered electric arc furnaces (EAF), and the application of carbon capture, utilisation, and storage (CCUS) technology. A comparative life cycle assessment (LCA) was performed on three steelmaking routes: conventional DRI-EAF (Direct Reduced Iron- Electric Arc Furnace), traditional BF-BOF (Blast Furnace- Basic Oxygen Furnace), and biomass-integrated DRI-EAF to show the better emissions performance of the biomass-integrated approaches. Life cycle assessment results show that the biomass-integrated DRI-EAF route achieves approximately 67% lower CO<sub>2</sub> emissions compared to the conventional BF-BOF route. With the help of supportive legislation, international cooperation, and big investments in infrastructure and innovation, the results show how India’s steel sector may greatly reduce its carbon footprint while keeping its competitiveness in the global market.</p>

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Towards a Low-Carbon Steel Industry in India: Decarbonization Strategies and Environmental Impact Assessment

  • Avash Kumar Saha,
  • Arup Kumar Mandal

摘要

The steel industry is one of the key engines of India’s economic growth and also greatly influences the country’s greenhouse gas (GHG) emissions. By 2030, India’s crude steel output is predicted to almost triple, so decarbonizing this difficult sector becomes even more important. This paper examines the present carbon footprint of the Indian steel business, investigates domestic and international decarbonisation projects, and proposes combined measures to help to build a low-carbon future. Important approaches are the adoption of hydrogen-based direct reduced iron (DRI) processes, increased recycling using renewable energy-powered electric arc furnaces (EAF), and the application of carbon capture, utilisation, and storage (CCUS) technology. A comparative life cycle assessment (LCA) was performed on three steelmaking routes: conventional DRI-EAF (Direct Reduced Iron- Electric Arc Furnace), traditional BF-BOF (Blast Furnace- Basic Oxygen Furnace), and biomass-integrated DRI-EAF to show the better emissions performance of the biomass-integrated approaches. Life cycle assessment results show that the biomass-integrated DRI-EAF route achieves approximately 67% lower CO2 emissions compared to the conventional BF-BOF route. With the help of supportive legislation, international cooperation, and big investments in infrastructure and innovation, the results show how India’s steel sector may greatly reduce its carbon footprint while keeping its competitiveness in the global market.