Invention Grant
- Patent Title: Alkaline cation enrichment and water electrolysis to provide CO2 mineralization and global-scale carbon management
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Application No.: US17873953Application Date: 2022-07-26
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Publication No.: US12161972B2Publication Date: 2024-12-10
- Inventor: Gaurav Sant , Erika Callagon La Plante , Jingbo Wang , David Jassby , Dante Simonetti , Abdulaziz Alturki , Xin Chen
- Applicant: The Regents of the University of California
- Applicant Address: US CA Oakland
- Assignee: The Regents of the University of California
- Current Assignee: The Regents of the University of California
- Current Assignee Address: US CA Oakland
- Agency: Foley Hoag LLP
- Agent David P. Halstead; Hilary Dorr Lang
- Main IPC: B01D53/62
- IPC: B01D53/62 ; B01D53/78 ; B01D53/96 ; C01B13/36 ; C01B32/60 ; C02F1/461 ; C02F103/08 ; C02F103/18

Abstract:
Provided herein are methods of removing carbon dioxide from an aqueous stream or gaseous stream by: contacting the gaseous stream comprising carbon dioxide, when present, with an aqueous solution comprising ions capable of forming an insoluble carbonate salt; contacting the aqueous solution comprising carbon dioxide with an electroactive mesh that induces its alkalinization thereby forcing the precipitation of a carbonate solid from the solution and thereby the removal of dissolved inorganic carbon by electrolysis; and removing the precipitated carbonate solids from the solution, or the surface of the mesh where they may deposit. Also provided herein are flow-through electrolytic reactors comprising an intake device in fluid connection with a rotating cylinder comprising an electroactive mesh, and a scraping device and/or liquid-spray based device for separating a solid from the mesh surface.
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