Year: 2025
Type: article
Abstract: The success of industrial scale carbon capture and storage in geologic reservoirs depends on the permanence of the stored carbon dioxide (CO 2 ). Carbon dioxide capture and mineralisation (CCM) or mineral carbonation, which is the conversion of CO 2 to carbonate minerals via fluid-rock reactions provides low risk and permanent CO 2 removal. Here, we demonstrate rapid mineralisation of industrial CO 2 emissions in mantle peridotites. Captured CO 2 from an ammonia plant in the Sultanate of Oman has been injected into peridotite at a pilot test site in the Samail ophiolite. Chemical and isotopic results indicate rapid carbonate mineral precipitation. Mass balance calculations suggest that ~88% of the injected CO 2 was mineralised as carbonate minerals within 45 days after injection. This successful approach of CCM unlocks peridotite as a promising new type of reservoir for the safe and permanent disposal of anthropogenic CO 2 emissions.
Authors: Juerg M. Matter, Joanna Speer, Christopher Day, Peter B. Kelemen, Amal Ibrahim, Sulaiman Al Mani, Ehab Tasfai, Moeez Ilyas, Karan Khimji, Talal Hasan
Language: English
Subfield: Environmental Engineering
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,490
Awards: Physical properties of uppermost mantle structure and the Mohorovicic seismic discontinuity, Collaborative Research: Alteration of Mantle Peridotite: Geochemical Fluxes and Dynamics of Far from Equilibrium Transport, G4696700612, Collaborative Research: Alteration of mantle peridotite: Geochemical fluxes and dynamics of far from equilibrium transport
OpenAlex ID: W4412658300