Activity and stability of immobilized carbonic anhydrase for promoting CO2 absorption into a carbonate solution for post-combustion CO2 capture

► A state-of-the-art CA enzyme from a pilot unit was employed in application studies. ► Mesoporous support materials were identified desirable for CA immobilization. ► Immobilized CA enzymes had significantly high thermal and chemical stability. ► Immobilized CA enzymes effectively promoted CO2 absorption into K2CO3 solution. ► Manometric assay for immobilized CA's activity was more accurate than p-NPA assay.