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Electrodialytic separation of gas from aqueous carbonate and bicarbonate solutions

  • US 8,778,156 B2
  • Filed: 12/15/2010
  • Issued: 07/15/2014
  • Est. Priority Date: 12/15/2010
  • Status: Active Grant
First Claim
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1. A process for producing a gas using an electrodialysis apparatus comprising:

  • flowing at least a first solution, and a second solution into the electrodialysis apparatus, the electrodedialysis apparatus comprising two axial support members sealingly coupled to define a housing enclosing an electrodialysis stack;

    flowing an electrode solution into the electrodialysis apparatus;

    pressurizing the electrodialysis apparatus at a stack pressure;

    applying a voltage to the electrodialysis stack of the electrodialysis apparatus such that a dissolved gas is generated in the second solution;

    flowing the second solution out of the electrodialysis apparatus;

    regenerating the gas out of the second solution; and

    collecting the gas.

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