Enzymatic Formulation and Composition for CO2 Capture Reactions

• US 20120107908A1
• Filed: 10/07/2011
• Published: 05/03/2012
• Est. Priority Date: 07/13/2001
• Status: Abandoned Application

• Current Assignee: CO2 Solutions Inc.
• Original Assignee: CO2 Solutions Inc.
• Inventors: Parent, Carmen, Dutil, Frédéric
• Application Number:
  US13/268,198
• Publication Number:
  US 20120107908A1
• Time in Patent Office: Days
• US Class Current: 435/232
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 53/84 Biological processes
• CPC Class Codes: B01D 53/85 with gas-solid contact
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• CPC Class Codes: Y02C 20/40 of CO2
• CPC Class Codes: Y02E 50/30 Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

A triphasic bioreactor and process for physico-chemically treating a gas includes a reaction chamber and its use with a liquid and biocatalysts in suspension, for catalyzing a reaction between the gas and the liquid to obtain a treated gas and a solution containing a reaction product. An enzymatic formulation for catalysis of the reaction CO₂+H₂O←→HCO₃⁻+H⁺ includes an aqueous medium, support particles in suspension in the aqueous medium and carbonic anhydrase supported by the support particles and present in an amount sufficient to catalyze the reaction.

Claims

1. An enzymatic formulation for catalysis of the reaction CO₂+H₂OHCO₃⁻

+H⁺, the enzymatic formulation comprising;

an aqueous medium;

support particles in suspension in the aqueous medium;

carbonic anhydrase supported by the support particles and present in an amount sufficient to catalyze the reaction.

2. The enzymatic formulation of claim 1, wherein the carbonic anhydrase are provided on the support particles.

3. The enzymatic formulation of claim 1, wherein the carbonic anhydrase are provided directly onto the support particles.

4. The enzymatic formulation of claim 2, wherein the carbonic anhydrase are immobilized onto the support particles.

5. The enzymatic formulation of claim 4, wherein the carbonic anhydrase are covalently bonded onto the support particles.

6. The enzymatic formulation of claim 1, wherein the carbonic anhydrase are immobilized.

7. The enzymatic formulation of claim 1, wherein the carbonic anhydrase are entrapped.

8. The enzymatic formulation of claim 7, wherein the carbonic anhydrase are entrapped in the support particles.

9. The enzymatic formulation of claim 1, wherein the support particles are solid polymer particles.

10. The enzymatic formulation of claim 1, wherein the support particles are composed of nylon.

11. The enzymatic formulation of claim 1, wherein the support particles are composed of polystyrene, polyurethane, polymethylmethacrylate, or functionalised silica gel.

12. The enzymatic formulation of claim 1, wherein the support particles comprise porous support particles.

13. The enzymatic formulation of claim 12, wherein the carbonic anhydrase are entrapped in the porous support particles.

14. The enzymatic formulation of claim 12, wherein the porous support particles are made of organic material.

15. The enzymatic formulation of claim 12, wherein the porous support particles are made of inorganic material.

16. The enzymatic formulation of claim 12, wherein the porous support particles comprise particles composed of an insoluble gel.

17. The enzymatic formulation of claim 12, wherein the porous support particles comprise particles composed of silica.

18. The enzymatic formulation of claim 12, wherein the porous support particles comprise particles composed of alginate.

19. The enzymatic formulation of claim 12, wherein the porous support particles comprise particles composed of alginate/chitosan.

20. The enzymatic formulation of claim 12, wherein the porous support particles comprise particles composed of chitosan.

21. The enzymatic formulation of claim 12, wherein the porous support particles comprise particles composed of alginate/carboxymethylcellulose.

22. The enzymatic formulation of claim 1, wherein the support particles comprise a network and the carbonic anhydrase are chemically linked with the network.

23. The enzymatic formulation of claim 22, wherein the network is a PEG network.

24. The enzymatic formulation of claim 22, wherein the network is an albumin network.

25. The enzymatic formulation of claim 1, wherein the support particles include particles of 0.005 μ

m to 0.1 μ

m in size.

26. The enzymatic formulation of claim 1, wherein the support particles include particles of 1 mm to 9 mm in diameter.

27. The enzymatic formulation of claim 26, wherein the support particles include particles of 3 mm in diameter.

28. The enzymatic formulation of claim 26, wherein the support particles are composed of alginate.

29. The enzymatic formulation of claim 1, wherein the support particles are composed of a material that is different from the carbonic anhydrase supported thereby.

30. The enzymatic formulation of claim 1, wherein the reaction is a forward reaction for absorption of CO₂ from a CO₂ containing gas into the aqueous medium.

31. The enzymatic formulation of claim 1, wherein the reaction is a backward reaction.

32. An enzymatic composition for catalysis of the reaction CO₂+H₂OHCO₃⁻

+H⁺, the enzymatic composition comprising;

support particles suspendable in an aqueous medium;

carbonic anhydrase supported by the support particles and present in an amount sufficient to catalyze the reaction within the aqueous medium.