Methods and systems for electrochemical precipitation of brucite for carbon capture and storage

WO2025015216A3 Publication Date: 2025-03-27MASSACHUSETTS INST OF TECH
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Patent Information

Application Number
PCT/US2024/037672
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-07-11
Filing Date
2024-07-11
Publication Date
2025-03-27

AI Technical Summary

Technical Problem

Current methods for carbon capture and storage using brucite are economically impractical due to inefficiencies in the chemical mineralization process and the rarity of naturally occurring brucite, along with high costs associated with mining and transporting brucite to carbon capture facilities.

Method used

A system and method for electrochemically producing brucite (Mg(OH)2) using a mineral reactor with a chamber containing an aqueous solution derived from seawater, electrodes, and a power supply to apply a voltage, facilitating the generation of brucite as a solid precipitate, which is then used to capture CO2 and convert it into magnesite for storage.

Benefits of technology

This approach provides a cost-effective and scalable solution for carbon capture and storage, reducing CO2 levels in the atmosphere by efficiently transforming CO2 into stable mineral forms like magnesite, with a high production yield and low energy consumption.

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Abstract

Provided herein are systems, devices, and methods for carbon capture and storage. A system for carbon capture and storage may comprise a chamber containing an aqueous solution, as well as a cathode and anode immersed in the aqueous solution. The system may further comprise a power supply connected to the cathode and the anode. The power supply may be configured to apply a voltage across the cathode and the anode, resulting in the electrochemical production of minerals as a solid precipitate.
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