Articles | Volume 21, issue 20
https://doi.org/10.5194/bg-21-4587-2024
© Author(s) 2024. 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-21-4587-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
23 Oct 2024
Research article |
| 23 Oct 2024
| 23 Oct 2024
Ocean alkalinity enhancement approaches and the predictability of runaway precipitation processes: results of an experimental study to determine critical alkalinity ranges for safe and sustainable application scenarios
Niels Suitner
CORRESPONDING AUTHOR
Institute for Geology, Universität Hamburg, Bundesstrasse 55, 20146 Hamburg, Germany
Giulia Faucher
GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstrasse 1–3, 24148 Kiel, Germany
KU Leuven, Department of Materials Engineering, 8200 Bruges, Belgium
Julieta Schneider
GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstrasse 1–3, 24148 Kiel, Germany
Charly A. Moras
Faculty of Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia
Ulf Riebesell
GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstrasse 1–3, 24148 Kiel, Germany
Institute for Geology, Universität Hamburg, Bundesstrasse 55, 20146 Hamburg, Germany
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Cited
26 citations as recorded by crossref.
- Alkaline materials for coastal ocean alkalinity enhancement: A comparative study of natural silicates and industrial byproducts X. Li et al.
- The response of phytoplankton to pH-equilibrated ocean alkalinization: A mesocosm experiment with harbour waters S. Groppelli et al.
- Marine Carbon Dioxide Removal: NOAA Policy Priorities for Efficacy and Risk Reduction J. Jordan
- The alkalinity generation potential of olivine and oyster shell for laboratory experiments: testing the effects of ocean alkalinity enhancement C. Miller & F. Pernet
- Simulated Earth system response to acid downwelling as a form of ocean alkalinity enhancement E. Tiwary et al.
- Alkalinity enhancement with sodium hydroxide in coastal ocean waters C. Wynn-Edwards et al.
- Assessment of solid ikaite release into seawater – implications for ocean alkalinity enhancement S. Baltruschat et al.
- Alkalinity enhancement in subduction regions and the global ocean: efficiency, earth system feedbacks, and scenario sensitivity T. Nagwekar et al.
- Ocean alkalinity enhancement in an open-ocean ecosystem: biogeochemical responses and carbon storage durability A. Paul et al.
- Interactions between ocean alkalinity enhancement and phytoplankton in an Earth system model M. Seifert et al.
- The carbon dioxide removal potential of cement and lime kiln dust via ocean alkalinity enhancement G. Flipkens et al.
- Alkaline mineral dissolution can impair embryonic development in the Pacific oyster (Magallana gigas), raising caution for ocean alkalinity enhancement F. Pernet et al.
- The effect of ocean alkalinity enhancement on zooplankton standing stock and community composition in the Eastern Mediterranean Sea: a mesocosm study A. Nocera et al.
- Using magnesium hydroxide for ocean alkalinity enhancement: elucidating the role of formation conditions on material properties and dissolution kinetics C. Shaw et al.
- Growth response of Emiliania huxleyi to ocean alkalinity enhancement G. Faucher et al.
- Carbon fixation of a temperate plankton community in response to calcium- and silicate-based Ocean Alkalinity Enhancement using air-sea gas exchange measurements J. Schneider et al.
- Resilience of the gelatinous zooplankton species Oikopleura dioica to ocean alkalinity enhancement A. Bhaumik et al.
- Perspectives on Marine Carbon Dioxide Removal from the Global Ocean Acidification Observing Network H. Findlay et al.
- Mineral formation during shipboard ocean alkalinity enhancement experiments in the North Atlantic M. Hashim et al.
- pH-equilibrated ocean alkalinization: Mesoscale evaluation of long-term stability S. Jamali Alamooti et al.
- A numerical assessment of ocean alkalinity enhancement efficiency on a river-dominated continental shelf—a case study in the northern Gulf of Mexico Y. Ou et al.
- Biological response of eelgrass epifauna, Taylor's Sea hare (Phyllaplysia taylori) and eelgrass isopod (Idotea resecata), to elevated ocean alkalinity K. Jones et al.
- Stability of alkalinity in the land-ocean transition zone: a geochemical CDR perspective for the Elbe River, Germany M. Tian et al.
- Evaluating ocean alkalinity enhancement as a carbon dioxide removal strategy in the North Sea F. Liu et al.
- Resilience of Phytoplankton and Microzooplankton Communities under Ocean Alkalinity Enhancement in the Oligotrophic Ocean X. Xin et al.
- Novel field trial for ocean alkalinity enhancement using electrochemically derived aqueous alkalinity A. Savoie et al.
26 citations as recorded by crossref.
- Alkaline materials for coastal ocean alkalinity enhancement: A comparative study of natural silicates and industrial byproducts X. Li et al.
- The response of phytoplankton to pH-equilibrated ocean alkalinization: A mesocosm experiment with harbour waters S. Groppelli et al.
- Marine Carbon Dioxide Removal: NOAA Policy Priorities for Efficacy and Risk Reduction J. Jordan
- The alkalinity generation potential of olivine and oyster shell for laboratory experiments: testing the effects of ocean alkalinity enhancement C. Miller & F. Pernet
- Simulated Earth system response to acid downwelling as a form of ocean alkalinity enhancement E. Tiwary et al.
- Alkalinity enhancement with sodium hydroxide in coastal ocean waters C. Wynn-Edwards et al.
- Assessment of solid ikaite release into seawater – implications for ocean alkalinity enhancement S. Baltruschat et al.
- Alkalinity enhancement in subduction regions and the global ocean: efficiency, earth system feedbacks, and scenario sensitivity T. Nagwekar et al.
- Ocean alkalinity enhancement in an open-ocean ecosystem: biogeochemical responses and carbon storage durability A. Paul et al.
- Interactions between ocean alkalinity enhancement and phytoplankton in an Earth system model M. Seifert et al.
- The carbon dioxide removal potential of cement and lime kiln dust via ocean alkalinity enhancement G. Flipkens et al.
- Alkaline mineral dissolution can impair embryonic development in the Pacific oyster (Magallana gigas), raising caution for ocean alkalinity enhancement F. Pernet et al.
- The effect of ocean alkalinity enhancement on zooplankton standing stock and community composition in the Eastern Mediterranean Sea: a mesocosm study A. Nocera et al.
- Using magnesium hydroxide for ocean alkalinity enhancement: elucidating the role of formation conditions on material properties and dissolution kinetics C. Shaw et al.
- Growth response of Emiliania huxleyi to ocean alkalinity enhancement G. Faucher et al.
- Carbon fixation of a temperate plankton community in response to calcium- and silicate-based Ocean Alkalinity Enhancement using air-sea gas exchange measurements J. Schneider et al.
- Resilience of the gelatinous zooplankton species Oikopleura dioica to ocean alkalinity enhancement A. Bhaumik et al.
- Perspectives on Marine Carbon Dioxide Removal from the Global Ocean Acidification Observing Network H. Findlay et al.
- Mineral formation during shipboard ocean alkalinity enhancement experiments in the North Atlantic M. Hashim et al.
- pH-equilibrated ocean alkalinization: Mesoscale evaluation of long-term stability S. Jamali Alamooti et al.
- A numerical assessment of ocean alkalinity enhancement efficiency on a river-dominated continental shelf—a case study in the northern Gulf of Mexico Y. Ou et al.
- Biological response of eelgrass epifauna, Taylor's Sea hare (Phyllaplysia taylori) and eelgrass isopod (Idotea resecata), to elevated ocean alkalinity K. Jones et al.
- Stability of alkalinity in the land-ocean transition zone: a geochemical CDR perspective for the Elbe River, Germany M. Tian et al.
- Evaluating ocean alkalinity enhancement as a carbon dioxide removal strategy in the North Sea F. Liu et al.
- Resilience of Phytoplankton and Microzooplankton Communities under Ocean Alkalinity Enhancement in the Oligotrophic Ocean X. Xin et al.
- Novel field trial for ocean alkalinity enhancement using electrochemically derived aqueous alkalinity A. Savoie et al.
Saved (final revised paper)
Latest update: 02 May 2026
Short summary
Recent studies described the precipitation of carbonates as a result of alkalinity enhancement in seawater, which could adversely affect the carbon sequestration potential of ocean alkalinity enhancement (OAE) approaches. By conducting experiments in natural seawater, this study observed uniform patterns during the triggered runaway carbonate precipitation, which allow the prediction of safe and efficient local application levels of OAE scenarios.
Recent studies described the precipitation of carbonates as a result of alkalinity enhancement...
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