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Method and apparatus for extracting carbon dioxide from air

  • US 8,273,160 B2
  • Filed: 10/13/2010
  • Issued: 09/25/2012
  • Est. Priority Date: 10/02/2006
  • Status: Active Grant
First Claim
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1. An apparatus for the capture of CO2 from ambient air comprising:

  • (a) an anion exchange material that captures CO2 from a flow of ambient air;

    (b) a store-of liquid water;

    (c) a liquid water dispenser that delivers liquid water from said store of liquid water to said anion exchange material;

    (d) an outlet exposed to ambient air and downstream of said anion exchange material, through which air depleted of CO2 exits the apparatus; and

    (e) a controlled environment in which said captured CO2 is collected, wherein said controlled environment is (i) enclosed, (ii) comprises CO2-enriched air, (iii) is located downstream of said anion exchange material, and (iv) is located downstream of said store of liquid water, wherein said anion exchange material comprises a material that extracts CO2 from air when dry and releases the extracted CO2 captured by the anion exchange material at a CO2 concentration higher than a starting concentration of CO2 in said ambient air when exposed to said liquid water.

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