Advanced Low Energy Enzyme Catalyzed Solvent for CO2 Capture
Project No.: DE-FE0004228

Akermin, Inc. is to conduct bench-scale testing to demonstrate the performance of an advanced carbonic anhydrase-potassium carbonate solvent with significantly lower regeneration energy requirements compared to conventional MEA. From a thermodynamic standpoint, capture of CO2 using carbonates such as K2CO3 offer significant advantages over MEA and MDEA, with 67% and 52% lower heats of reaction, respectively. However, the reaction rate with carbonates is six times lower than with amines.  The reaction rate can be increased, however, through catalysis with enzymes. The objective of this project is to develop immobilized carbonic anhydrase (CA) enzymes to accelerate potassium carbonate reaction rates and thus lower capture costs through decreased regeneration energy requirements. The key element of the process is immobilization and stabilization of the enzyme, which will be accomplished through the use of micellar polymers.

Carbonic anhydrase (CA) Enzyme
Carbonic anhydrase (CA) Enzyme

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  • For further information on this project, contact the NETL Project Manager, Andrew Jones.