https://doi.org/10.1039/C7RA01352C
“One of the key parameters, which can affect the mass transfer performance, is the liquid flow rate. Many researchers showed that when the liquid flow rate increased, KGCO2aV increased as well. The reasons for this effect are (1) an increase in the amine flow rate can cause an increase in free active molecules of amines for high CO2 absorption, (2) an increase in the amine flow rate has the greatest effect on the surface of the packing, increasing the wet surface area between the amine and gas phases, and (3) an increase in the mass transfer coefficient in the liquid phase decreases the mass transfer resistance in the liquid phase and, as a result, increases the mass transfer coefficient in the gas phase.50,63,65,66,68 However, increasing this factor above the optimum point can lead to a loss of amines and to high-energy consumption for amine regeneration.”