CO 2 absorption solution

Gas separation: processes – Liquid contacting – Inorganic gas – liquid particle – or solid particle sorbed

Reexamination Certificate

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C423S226000, C423S228000, C252S184000

Reexamination Certificate

active

07740689

ABSTRACT:
Disclosed is a formulation for the absorption of CO2, which comprises water, at least one CO2absorption compound and a carbonic anhydrase as an activator to enhance the absorption capacity of the CO2absorption compound. The invention also concerns the use of carbonic anhydrase, in a CO2absorption solution to increase the CO2absorption rate of such solution.

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patent: 6524843 (2003-02-01), Blais et al.
patent: 6890497 (2005-05-01), Rau et al.
patent: 2003/0224504 (2003-12-01), Blais et al.
patent: 2004/0029257 (2004-02-01), Dutil et al.
patent: 2004/0219090 (2004-11-01), Dziedzic et al.
patent: 2 509 989 (2004-07-01), None
Allen, J.P., “Investigation of the enhancement of carbon dioxide absorption by amines with the enzyme carbonic anhydrase”, Technical Report AFFDL-TR-66-23 (May1966).
Allen, J.P., “An enzymatic concept for CO2control in closed environmental control systems”, Technical Report AFFDL-T-65-48 (Aug. 1965).
Graf, G., “Regenerative control of CO2in air by carbonic anhydrase”, Technical Report AFFDL-TR-66-62, (May 1966).
Dean, et al., “Batch Absorption of CO2by Free and Microencapsulated Carbonic Anhydrase”, Ind. Eng. Chem., Fundam., vol. 16, No. 4, pp. 452-458 (1977).
Donaldosn & Quinn, “Kinetic Constants Determined from Membrane Transport Measurements: Carbonic Anhydrase Activity at High Concentrations”, Proc. Nat. Acad. Sci. USA, vol. 71, No. 12, pp. 4995-4999 (Dec. 1974).

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