| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Energy Technologies and CO2 Management
|
| Presentation Title |
Seawater Electrolysis Enables High-quality Carbon Removal |
| Author(s) |
Erika La Plante, Dante Simonetti, David Jassby, Lorenzo Corsini, Gaurav Sant |
| On-Site Speaker (Planned) |
Erika La Plante |
| Abstract Scope |
The trapping of carbon dioxide (CO2) as an aqueous (bi)carbonate ion (e.g., HCO3–, CO32–) or as a mineral solid is attractive because of favorable thermodynamics, and the safety and permanence of storage. We have developed the Equatic process, which electrolytically forces mineral carbonate precipitation thereby consuming prevalent CO2 that is dissolved in seawater by locking it within carbonate minerals, while producing alkaline mineral hydroxides that when dissolved in seawater enable the drawdown of atmospheric CO2 into the seawater. Here, we describe the CO2 mass balances of the process toward a robust measurement, reporting, and verification (MRV) strategy. In addition, we describe a pilot project which will demonstrate an energy intensity of 2.5 MWh per t CO2 removed, identify the necessary data for carbon accounting, and inform design of full-scale operations. Finally, we describe a strategy for coupling domestic production of critical metals with CO2 removal. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Sustainability, Extraction and Processing, |