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Systems and Methods for Extraction of Carbon Dioxide from Air

  • US 20080138265A1
  • Filed: 05/04/2005
  • Published: 06/12/2008
  • Est. Priority Date: 05/04/2004
  • Status: Active Grant
First Claim
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1. A method for extracting or capturing carbon dioxide from air, comprising:

  • (a) exposing air containing carbon dioxide to a solution comprising a base;

    resulting in a basic solution which absorbs carbon dioxide and produces a carbonate solution;

    (b) causticizing the carbonate solution with a titanate containing reagent;

    (c) increasing the temperature of the solution generated in step (b) to release carbon dioxide; and

    (d) hydrating solid components remaining from step (c) to regenerate the base comprising step (a).

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