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Rapid mineralisation of carbon dixoide in peridotites

Rapid mineralisation of carbon dixoide in peridotites
Rapid mineralisation of carbon dixoide in peridotites
The success of industrial scale carbon capture and storage in geologic reservoirs depends on the permanence of the stored carbon dioxide (CO2). Carbon dioxide capture and mineralisation (CCM) or mineral carbonation, which is the conversion of CO2 to carbonate minerals via fluid-rock reactions provides low risk and permanent CO2 removal. Here, we demonstrate rapid mineralisation of industrial CO2 emissions in mantle peridotites. Captured CO2 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 CO2 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 CO2 emissions.
Matter, Juerg M.
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Speer, Joanna
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Day, Christopher
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Kelemen, Peter B.
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Ibrahim, Amal
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Al Mani, Sulaiman
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Tasfai, Ehab
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Ilyas, Moeez
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Khimji, Karan
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Hasan, Talal
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Matter, Juerg M.
abb60c24-b6cb-4d1a-a108-6fc51ee20395
Speer, Joanna
403e75fb-9a07-47cc-b43a-405c90e3a38b
Day, Christopher
bc66bbef-df83-4400-8f18-2cd0629e7897
Kelemen, Peter B.
cbc67580-a05e-4dc8-8c33-141928cb23b4
Ibrahim, Amal
bf1b08e7-f844-4e65-ae2f-54ac9bbe3517
Al Mani, Sulaiman
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Tasfai, Ehab
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Ilyas, Moeez
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Khimji, Karan
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Hasan, Talal
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Matter, Juerg M., Speer, Joanna, Day, Christopher, Kelemen, Peter B., Ibrahim, Amal, Al Mani, Sulaiman, Tasfai, Ehab, Ilyas, Moeez, Khimji, Karan and Hasan, Talal (2025) Rapid mineralisation of carbon dixoide in peridotites. Communications Earth & Environment, 6. (doi:10.1038/s43247-025-02509-5).

Record type: Article

Abstract

The success of industrial scale carbon capture and storage in geologic reservoirs depends on the permanence of the stored carbon dioxide (CO2). Carbon dioxide capture and mineralisation (CCM) or mineral carbonation, which is the conversion of CO2 to carbonate minerals via fluid-rock reactions provides low risk and permanent CO2 removal. Here, we demonstrate rapid mineralisation of industrial CO2 emissions in mantle peridotites. Captured CO2 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 CO2 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 CO2 emissions.

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Accepted/In Press date: 23 June 2025
Published date: 26 July 2025

Identifiers

Local EPrints ID: 504566
URI: http://eprints.soton.ac.uk/id/eprint/504566
PURE UUID: 2f8e930c-8a29-472e-ad8c-df62f6088c5d
ORCID for Juerg M. Matter: ORCID iD orcid.org/0000-0002-1070-7371
ORCID for Joanna Speer: ORCID iD orcid.org/0009-0007-5344-4181

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Date deposited: 15 Sep 2025 16:44
Last modified: 16 Sep 2025 02:20

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Contributors

Author: Juerg M. Matter ORCID iD
Author: Joanna Speer ORCID iD
Author: Christopher Day
Author: Peter B. Kelemen
Author: Amal Ibrahim
Author: Sulaiman Al Mani
Author: Ehab Tasfai
Author: Moeez Ilyas
Author: Karan Khimji
Author: Talal Hasan

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