Alkaline cation enrichment and water electrolysis to provide CO₂ mineralization and global-scale carbon management

Patent · Tue Aug 16 00:00:00 EDT 2022

OSTI ID:1924982

Sant, Gaurav; La Plante, Erika Callagon; Wang, Jingbo; Jassby, David; Simonetti, Dante; Alturki, Abdulaziz; Chen, Xin

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.

• Research Organization: Univ. of California, Los Angeles, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FE0029825; FE0031718
• Assignee: The Regents of the University of California (Oakland, CA)
• Patent Number(s): 11,413,578
• Application Number: 17/408,236
• OSTI ID: 1924982
• Resource Relation: Patent File Date: 08/20/2021
• Country of Publication: United States
• Language: English