Biogeosciences
Biogeosciences
BG
Articles | Volume 22, issue 22
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.
https://doi.org/10.5194/bg-22-7149-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 22
Research article
 | 
24 Nov 2025
Research article |  | 24 Nov 2025

Mineral formation during shipboard ocean alkalinity enhancement experiments in the North Atlantic

Mohammed S. Hashim, Lukas Marx, Frieder Klein, Chloe L. Dean, Emily Burdige, Matthew Hayden, Daniel C. McCorkle, and Adam V. Subhas

Data sets

Carbonate chemistry data for shipboard ocean alkalinity enhancement (OAE) experiments in the North Atlantic on R/V Atlantic Explorer cruise AE2320 in September 2023 M. Hashim et al. https://doi.org/10.26008/1912/bco-dmo.963736.1

X-ray diffraction (XRD) raw data and results from Rietveld refinement for precipitate from shipboard ocean alkalinity enhancement (OAE) experiments in the North Atlantic on R/V Atlantic Explorer cruise AE2320 in September 2023 M. Hashim et al. https://doi.org/10.26008/1912/bco-dmo.963717.1

Thermogravimetric analysis (TGA) for precipitate from shipboard ocean alkalinity enhancement (OAE) experiments in the North Atlantic on R/V Atlantic Explorer cruise AE2320 in September 2023 M. Hashim et al. https://doi.org/10.26008/1912/bco-dmo.963692.1

Download
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.
Read more
Share
Altmetrics
Final-revised paper
Preprint