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Removing Carbon Dioxide From Waste Streams Through Co-Generation of Carbonate and/or Bicarbonate Minerals

  • US 20090127127A1
  • Filed: 09/22/2008
  • Published: 05/21/2009
  • Est. Priority Date: 09/20/2007
  • Status: Active Grant
First Claim
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1. A method of removing an initial amount of carbon dioxide from a gas stream comprising:

  • obtaining a hydroxide in an aqueous mixture;

    obtaining chlorine;

    admixing the hydroxide with the gas stream to produce carbonate products, bicarbonate products, or a mixture of carbonate and bicarbonate products in an admixture;

    separating said carbonate and/or bicarbonate products from the admixture, thereby removing a portion of the initial amount of carbon dioxide from the gas stream;

    combining chlorine with water to form hypochlorous acid;

    decaying the hypochlorous acid to form hydrochloric acid and oxygen; and

    combining the hydrochloric acid with calcium carbonate to form calcium chloride and a reduced amount of carbon dioxide.

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