Articles | Volume 22, issue 22
https://doi.org/10.5194/bg-22-7149-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-7149-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
24 Nov 2025
Research article |
| 24 Nov 2025
Mineral formation during shipboard ocean alkalinity enhancement experiments in the North Atlantic
Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
current address: Department of Oceanography, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA
Lukas Marx
Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
Frieder Klein
Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
Chloe L. Dean
Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
MIT-WHOI Joint Program in Oceanography/Applied Ocean Science & Engineering, Cambridge and Woods Hole, MA, USA
Emily Burdige
Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
MIT-WHOI Joint Program in Oceanography/Applied Ocean Science & Engineering, Cambridge and Woods Hole, MA, USA
Matthew Hayden
Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
Daniel C. McCorkle
Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
Adam V. Subhas
Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
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Short summary
Ocean alkalinity enhancement (OAE) is a CO2 removal approach that involves the addition of alkaline substances to seawater that would allow it to absorb more atmospheric CO2. Increasing seawater alkalinity, however, can trigger mineral precipitation that decreases OAE efficiency. We conducted experiments to constrain the thermodynamics and kinetics of mineral precipitation.
Ocean alkalinity enhancement (OAE) is a CO2 removal approach that involves the addition of...
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