Methods and formulations using carbonic anhydrase and reaction compound combinations

A method for absorption of CO2 comprising contacting gaseous CO2 with an aqueous CO2 absorption solution comprising at least one CO2 absorption compound and carbonic anhydrase wherein the carbonic anhydrase enables at least a 60% increase in CO2 transfer rate relative to the same aqueous CO2 absorption solution without the carbonic anhydrase.

A method to enhance CO2 absorption, comprising providing carbonic anhydrase within a packed bed reactor;

• contacting gaseous CO2 with an aqueous CO2 absorption solution comprising at least one CO2 absorption compound within the packed bed reactor in the presence of the carbonic anhydrase;
• and operating the packed bed reactor to enable increased CO2 transfer rate relative to the same absorption solution without the carbonic anhydrase.

A formulation for absorption of CO2 comprising water and at least one CO2 absorption compound comprising a carbonate salt, the water and the at least one CO2 absorption compound forming an alkaline carbonate salt based solution;

• and carbonic anhydrase to enhance the absorption of CO2 into the alkaline carbonate salt based solution.

A formulation for absorption of CO2 comprising water, at least one aliphatic CO2 absorption compound non-reactive directly with CO2, and carbonic anhydrase to enhance the absorption of the CO2 into the water.

A formulation for catalysis of the following reaction:

• CO2+H2O HCO3+H+ comprising water, at least one reaction compound selected from carbonates, sodium carbonate, potassium carbonate, alkyleneamines, a physical solvent, alkyl ethers of alkylene glycols, dimethylether of polyethylene glycol, tetraethylene glycol dimethyl ether, aminoethers, 2-substituted piperidine alcohols, piperazine, piperazine derivatives, a mixture of amines and physical absorbents, ionic liquid, a liquid comprising a cation and an anion having a carboxylate function, and a combination thereof, the water and the at least one reaction compound forming a solution;
• and carbonic anhydrase to catalyze the reaction.

A method for catalysis of the following reaction:

• CO2+H2O HCO3+H+ the method comprising providing a formulation comprising water;
• at least one reaction compound selected from carbonates, sodium carbonate, potassium carbonate, alkyleneamines, a physical solvent, alkyl ethers of alkylene glycols, dimethylether of polyethylene glycol, tetraethylene glycol dimethyl ether, aminoethers, 2-substituted piperidine alcohols, piperazine, piperazine derivatives, a mixture of amines and physical absorbents, ionic liquid, a liquid comprising a cation and an anion having a carboxylate function, and a combination thereof, the water and the at least one reaction compound forming a solution;
• and carbonic anhydrase to catalyze the reaction.

A method for catalysis of the following reaction:

• CO2+H2O HCO3+H+ the method comprising providing a formulation comprising water;
• a mixture of reaction compounds;
• and carbonic anhydrase to catalyze the reaction.

A formulation for catalysis of the following reaction:

• CO2+H2O HCO3+H+ comprising water, at least one reaction compound comprising a cation and an anion having a carboxylate function, the water and the at least one reaction compound forming a solution;
• and carbonic anhydrase to catalyze the reaction.