Get started
Work

Potential of CO 2 sequestration through accelerated weathering of limestone on ships

Year: 2025
Type: article
Abstract: Calcium carbonate dissolution is the dominant negative feedback in the ocean for neutralizing the acidity from rising atmospheric carbon dioxide. Mimicking this natural process, the accelerated weathering of limestone (AWL) can store carbon as bicarbonate in the ocean for tens of thousands of years. Here, we evaluate the potential of AWL on ships as a carbon sequestration approach. We show a successful prediction of laboratory measurements using a model that includes the most recent calcite dissolution kinetics in seawater. When simulated along a Pacific shipping lane in the Estimating the Circulation and Climate of the Ocean-Darwin ocean-general circulation model, surface alkalinity and dissolved inorganic carbon increase by <1.4% after 10 years of continuous operation, leaving a small pH and partial pressure of carbon dioxide impact to the ocean while reducing 50% carbon dioxide emission in maritime transportation.
DOI: 10.1126/sciadv.adr7250
Authors: Sijia Dong, William M. Berelson, Pierre Forin, Melissa Gutierrez, Dustin Carroll, Dimitris Menemenlis, Albert Y. Kyi, Jess F. Adkins
Institutions: California Institute of Technology, Nanjing University, University of Southern California, Jet Propulsion Laboratory, San Jose State University, Moss Landing Marine Laboratories, The University of Texas at Austin
Language: English
Open Access status: gold
Estimated APC paid: $4,500
Funders: California Institute of Technology, Grantham Foundation for the Protection of the Environment, Government of Jiangsu Province, Ames Research Center, Jet Propulsion Laboratory, Fundamental Research Funds for the Central Universities
OpenAlex ID: W4411401748
FWCI: 3.153
Cites: 42
Cited by: 11
Related to: 10