Co2 Solutions Inc.

Saipem S.p.a.

Éric Madore

Sylvie Fradette

Richard Daigle

Normand Voyer

Methods for enzyme-enhanced COcapture include contacting a CO-containing gas with an aqueous absorption solution at process conditions&#x2014;such as high temperature, high pH, and/or using carbonate-based solutions&#x2014;in the presence ofcarbonic anhydrase (TACA) or functional derivative thereof for catalyzing the hydration reaction of COinto bicarbonate and hydrogen ions and/or catalyzing the desorption reaction to produce a COgas. The TACA may be provided to flow with the solution to cycle through a COcapture system that includes an absorber and a stripper.

COcapture methods usingcarbonic anhydrase

The present description relates to recombinant or engineered carbonic anhydrase polypeptides, variants, and functional derivatives thereof, having improved properties that make them advantageous for use in COcapture operations (e.g., COcapture solvents, alkaline pH, and/or elevated temperatures), as well as polynucleotides and vectors encoding same. The present description also relates to methods, processes and systems for COcapture which make use of the recombinant or engineered carbonic anhydrase polypeptides, variants, and functional derivatives thereof.

Variants of thermovibrio ammonificans carbonic anhydrase and COcapture methods using thermovibrio ammonificans carbonic anhydrase variants

Use ofsp. carbonic anhydrase (SspCA) or mutants thereof for catalyzing the hydration reaction of COinto bicarbonate and hydrogen ions or catalyzing the desorption reaction to produce a COgas is provided.

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Québec, Canada

Éric Madore