How carbon dioxide is being stored in rocks (CNBC)
Now, one project – based at the Hellisheidi Geothermal Plant – is looking to develop technology to permanently store the by-products of the plant's processes inside volcanic rocks called basalts.
"We actually capture the CO2 at the power plant, dissolve it in water and inject it as sort of mineral water back into the ground," Edda Sif Aradottir, project manager at CarbFix, told CNBC's Sustainable Energy. A chemical reaction then takes place, which eventually turns the CO2 into minerals called carbonate, she added.
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