Scottish Carbon Capture & Storage (SCCS) has reported on the new research conducted by the Nature Communications, which shows that captured carbon dioxide (CO2) can be stored safely for thousands of years by injecting the liquefied gas deep underground into the microscopic pore spaces of common rocks.
The findings increase confidence in the widespread roll-out of engineered carbon capture and storage. Researchers from SCCS’s partner institutes, the Universities of Aberdeen and Edinburgh, compiled a worldwide database of information from natural CO2 and methane accumulations and hydrocarbon industry experience – including engineered gas storage, decades of borehole injection, and laboratory experiments.
Computer simulations were used to combine all these factors and model storage of CO2 for 10,000 years into the future. Previous research in this area had not fully accounted for the natural trapping of CO2 in rock as microscopic bubbles, or the dissolving of CO2 into the salty water already in the rocks.
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