June 9, 2016

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Experiment ‘turns waste CO2 to stone’ –
Scientists think they have found a smart way to constrain carbon dioxide emissions – just turn them to stone. The researchers report an experiment in Iceland where they have pumped CO2 and water underground into volcanic rock. Reactions with the minerals in the deep basalts convert the carbon dioxide to a stable, immobile chalky solid. Even more encouraging, the team writes in Science magazine, is the speed at which this process occurs: on the order of months. “Of our 220 tonnes of injected CO2, 95% was converted to limestone in less than two years,” said lead author Juerg Matter from Southampton University, UK. “It was a huge surprise to all the scientists involved in the project, and we thought, ‘Wow! This is really fast’.” [BBC]

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