Researchers from France and Thailand have developed an innovative process using concentrated solar heat to produce green iron and syngas from agricultural waste biomass. The new method aims to eliminate carbon emissions by using waste biomass such as betel nut waste in Thailand. By leveraging a solar dish concentrator to supply heat up to 1400°C, the researchers were able to pyrolyze the biomass waste and reduce iron oxide in a gasifier they developed. The process not only produces green iron but also high-value solar fuels as syngas, making it a sustainable and flexible solution. By replacing coal feedstock with bio-based feedstock and utilizing solar energy as the heat source, the process achieves carbon neutrality. Additionally, the pyrolysis of agricultural waste generates solid biochar, which can benefit soil health. The researchers demonstrated the effectiveness of the process on a small scale and plan to incorporate thermal storage in future implementations to ensure stable temperatures during the chemical reaction. Overall, this innovative approach shows promising potential in revolutionizing iron production by integrating renewable energy sources and bio-based feedstock, ultimately contributing to a more sustainable and environmentally friendly industrial process.