Process for biocatalytic CO;capture using dimethylmonoethanolamine, diethylmonoethanolamine or dimethylglycine

  • US 9,044,709 B2
  • Filed: 12/13/2013
  • Issued: 06/02/2015
  • Est. Priority Date: 08/04/2009
  • Status: Active Grant
First Claim
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1. A process for capturing CO2 from a CO2-containing gas comprising:

  • contacting the CO2-containing gas with an absorption mixture comprising water, biocatalysts and an absorption compound selected from dimethylmonoethanolamine (DMMEA), diethylmonoethanolamine (DEMEA), and dimethylglycine, to enable dissolution and transformation of CO2 into bicarbonate and hydrogen ions, thereby producing a CO2-depleted gas and an ion-rich solution; and

    subjecting the ion-rich solution to desorption to produce a CO2 gas stream and an ion-depleted solution.

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