New flash method removes 96% of metals from red mud, leaves aluminum-rich residue

Researchers at Rice University have developed a fast and eco-friendly method to extract aluminum and remove toxic metals from red mud, a by-product of aluminum production. This new technique involves flash Joule heating with a chlorine gas dose, extracting 96% of metals in about a minute, leaving an aluminum-rich residue for reuse. The method could be transformative for industries beyond aluminum, reducing waste, emissions, and the need for new bauxite mining, while converting waste into strong building materials. The project is being scaled globally with industry collaboration.