Integration of direct air capture system into CO2 mineralization process of concretes and aggregates

US12351527B2 · kind B2 · utility

Assignees

• The Regents of the University of California · US
• CarbonBuilt · US

Inventors

• Gaurav Sant · Los Angeles, US
• Dante Simonetti · Middleton, US
• Iman Mehdipour · Los Angeles, US
• David Jassby · Los Angeles, US
• Yenwen Tseng · Los Angeles, US

Key dates

• Filing date: Oct 18, 2022
• Grant date: Jul 8, 2025
• Expiry date: Oct 18, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/18
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method of forming a concrete product includes directly capturing CO2 from a gas source, the capturing comprising contacting the gas source with an absorption solution having a solvent and a solute, wherein the solvent and/or the solute are capable of reacting with CO2 to form an anionic compound, adjusting the pH of the absorption solution electrochemically to less than about 7 to release the CO2 as a concentrated vapor containing CO2, collecting the concentrated vapor containing CO2, regenerating the solvent and/or the solute, and optionally collecting the regenerated solvent and/or solute; flowing the concentrated vapor containing CO2 through a gas processing unit to adjust at least one of a temperature, a relative humidity, or a flow rate of the concentrated vapor containing CO2; and contacting the concentrated vapor containing CO2 with a concrete component.