Researchers at the Royal Melbourne Institute of Technology have worked out a cheap and efficient way to convert atmospheric carbon dioxide into solid particles of carbon. This new carbon-capture technology could be key to reducing the amount of this dangerous greenhouse gas in our atmosphere. Most approaches to remove CO 2 focus on compressing the gas into a liquid and then injecting it underground. Doing this has significant challenges and there is the possibility that it might eventually leak out from storage sites. The new approach, reported in Nature Communications , could be more sustainable and prevent unwanted leaks. It is designed in a way that means it could be applied on a large scale and the researchers have been able to resolve previous issues encountered when attempting to turn carbon dioxide into coal. “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,” co-author Dr Torben Daeneke said in a statement . “To date, CO 2 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 […]

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