Co2 Solutions Inc.

Saipem S.p.a.

Normand Voyer

Sylvie Fradette

Richard Daigle

Éric Madore

Olivera Ceperkovic

Jonathan Carley

Glenn R Kelly

Julie Gingras

Eric Madore

ÉRic Madore

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

A process for capturing COincludes contacting a CO-containing gas with an absorption mixture optionally within a packed reactor is provided. The absorption mixture includes a liquid solution and micro-particles. The micro-particles include a support material and biocatalyst supported by the support material and are sized and provided in a concentration such that the absorption mixture flows through the packed reactor and that the micro-particles are carried with the liquid solution to promote dissolution and transformation of COinto bicarbonate and hydrogen ions. The absorption mixture and micro-particles may be provided in an absorption reactor so as to be pumpable. Furthermore, a process for desorbing COgas from an ion-rich aqueous mixture includes providing biocatalytic micro-particles and feeding the mixture to a desorption reactor, to promote transformation of the bicarbonate and hydrogen ions into COgas and water.

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Neuville, Canada

Normand Voyer