As global industry attempts to decarbonise its energy-intensive processes such as cement manufacture, could the key to decarbonisation lie in the rocks beneath our feet?
Experienced industrial gases expert Stephen B. Harrison spoke with gasworld during its Europe CO2 Summit 2022 and delved into an area considered one of the most exciting in current CO2 applications – utilisation, specifically in the area of mineralisation.
Enthused by the prospect of CO2 for mineralisation, Harrison explained that that some rocks, such as limestone and magnesite are saturated in CO2. During cement manufacture limestone converts to calcium oxide, releasing CO2 in the process. Two specific ultramafic rocks, serpentinite and olivine are able to absorb CO2 during mineralisation.
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