Climate rewind: Scientists turn carbon dioxide back into coal

Researchers have used liquid metals to turn carbon dioxide back into solid coal, in a world-first breakthrough that could transform our approach to carbon capture and storage. The research team led by RMIT University in Melbourne, Australia, have developed a new technique that can efficiently convert CO2 from a gas into solid particles of carbon. Published in the journal Nature Communications, the research offers an alternative pathway for safely and permanently removing the greenhouse gas from our atmosphere. Current technologies for carbon capture and storage focus on compressing CO2 into a liquid form, transporting it to a suitable site and injecting it underground. But implementation has been hampered by engineering challenges, issues around economic viability and environmental concerns about possible leaks from the storage sites. RMIT researcher Dr. Torben Daeneke said converting CO2 into a solid could be a more sustainable approach. “While we can’t literally turn back time, turning carbon dioxide back into coal and burying it back in the ground is a bit like rewinding the emissions clock,” Daeneke, an Australian Research Council DECRA Fellow, said. “To date, CO2 has only been converted into a solid at extremely high temperatures, making it industrially unviable. “By using liquid metals as a catalyst, we’ve shown it’s possible to turn the gas back… continue reading

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Source: CTRM Center

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