Enzymatic CO2 capture in countercurrent packed-bed column reactors with high performance random packings

摘要: Abstract Packed-bed columns with immobilized human carbonic anhydrase II (hCA II) enzyme on fourth generation random packings offer an attractive way to implement CO 2 capture because of low pressure drop, high capacities and extremely large uniform open area in every ring orientation. Enzyme-based removal performance countercurrent packed-bed column reactors was analyzed by means a dynamic 3D model which links the macroscopic volume-averaged continuity, momentum species balance equations liquid gas phases simultaneous diffusion chemical reaction at washcoat/liquid film scale level. The results reveal that this low-cost, green, environmentally friendly technology could be interesting option removal. hCA can enhanced diminishing washcoat thickness, increasing inlet buffer concentration pK constant velocity conserving drop Also, operation extra loadings allows obtain higher conversion avoids deterioration hydration rate long-term attributable decrease activity.