from a gas using carbonic anhydrase and potassium carbonate
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United States of America Patent
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Jan 3, 2017
Grant Date -
Aug 20, 2015
app pub date -
Apr 28, 2015
filing date -
Aug 4, 2009
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Abstract
A formulation and process for capturing CO2 use an absorption mixture containing water, biocatalysts and a carbonate compound. The process includes contacting a CO2-containing gas with the absorption mixture to enable dissolution and transformation of CO2 into bicarbonate and hydrogen ions, thereby producing a CO2-depleted gas and an ion-rich solution, followed by subjecting the ion-rich solution to desorption. The biocatalyst improves absorption of the mixture comprising carbonate compounds and the carbonate compound promotes release of the bicarbonate ions from the ion-rich solution during desorption, producing a CO2 gas stream and an ion-depleted solution.
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