公开(公告)号：US20250050273A1

公开(公告)日：2025-02-13

申请号：US18805064

申请日：2024-08-14

Applicant: Arizona Board of Regents on Behalf of Arizona State University

Inventor： Klaus LACKNER

IPC: B01D53/96 ,  B01D53/62 ,  B01D53/78 ,  C25B1/04 ,  C25B1/50 ,  C25B9/19 ,  C25B15/08

Abstract: A system for producing gas streams for use in synthetic fuel production through CO2 capture and water splitting is disclosed. The system includes a CO2 capture device configured to receive a CO2-containing stream and including an aqueous alkaline solution. The alkaline solution includes hydroxide and/or carbonate ions. The CO2 capture device generates a carbon-rich solution when the alkaline solution absorbs CO2. The carbon-rich solution includes carbonate and/or bicarbonate ions. The system also includes an electrolyzer fluidically coupled to the CO2 capture device, and defining a volume including an anode region having an anode, and a cathode region having a cathode. The volume includes an electrolyte solution having a pH gradient generated by an electric current, causing the electrolyte solution to be acidic in the anode region and alkaline in the cathode region. The carbon-rich solution is received into the electrolyzer. The electrolyzer generates hydrogen, oxygen, and CO2 streams.

公开(公告)号：US20250058266A1

公开(公告)日：2025-02-20

申请号：US18815777

申请日：2024-08-26

Applicant: Arizona Board of Regents on Behalf of Arizona State University

Inventor： Klaus LACKNER ,  Shreyans KEDIA ,  Venkatram CHOODAMANI ,  Robert PAGE

IPC: B01D53/04

Abstract: A device for passive collection of atmospheric carbon dioxide is disclosed. The device includes a release chamber having an opening and a sorbent regeneration system. The device also includes a capture structure coupled to the release chamber, having at least one collapsible support and a plurality of tiles spaced along the collapsible support. Each tile has a sorbent material. The capture structure is movable between a collection configuration and a release configuration. The collection configuration includes the capture structure extending upward from the release chamber to expose the capture structure to an airflow and allow the sorbent material to capture atmospheric carbon dioxide. The release configuration includes the collapsible support being collapsed and the plurality of tiles being sufficiently enclosed inside the release chamber that the sorbent regeneration system may operate on the plurality of tiles to release captured carbon dioxide from the sorbent material and form an enriched gas.