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Researchers demonstrate how red mud can be reused to make iron, reducing carbon emissions in steel production. Highlights: next-generation geothermal power plants, an origami fabric robot, a study on long COVID, updates on Osiris Rex sample container, and Japan's precise moon landing.
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- Red mud, a toxic by-product of aluminum production, can be reused to make iron for steel production, potentially reducing carbon emissions.
- A predictive tool analyzing blood protein levels shows promise in identifying individuals at risk of developing long COVID.
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Using Red Mud to Make Green Steel
Researchers have found that red mud, a waste product of aluminum production, could be used to extract iron and produce green steel. Red mud, which is rich in iron oxide, can be processed in an electric arc furnace using hydrogen gas. The superheated hydrogen plasma binds to the oxygen in the iron oxide, extracting the iron and releasing steam instead of carbon dioxide. This process shows promise in reducing the carbon emissions associated with steel production and finding a productive use for red mud, which is currently a major environmental risk.
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