3. CO2(A) is being absorbed from an air- CO2 gas mixture into a laminar water (B) film in a wetted-wall column of 50mm in diameter. In a test run, mass flow rate of pure water per unit width of column periphery is 0.35 kg/ms, solubility of CO2 in water is 0.04kmolCO2/m3 of solution. Viscosity and density of water and molecular diffusivity of CO2 in water are 1103kg/ms,1000kg/m3 and 2109m2/s. a. Calculate the maximum length of the wetted-wall column for which penetration theory is valid, (15 points) b. Calculate the average rate of absorption of CO2 using Higbie model as kg/h. (10 points). Conditions for which penetration theory is valid are: i) Depth of penetration, z is the distance grom the interface at where local velocity of the liquid is 95% of the surface velocity of the liquid. ii)At the depth of penetration the ratio of (CACAo) to (CAiCAo) is 0.01 . 3. CO2(A) is being absorbed from an air- CO2 gas mixture into a laminar water (B) film in a wetted-wall column of 50mm in diameter. In a test run, mass flow rate of pure water per unit width of column periphery is 0.35 kg/ms, solubility of CO2 in water is 0.04kmolCO2/m3 of solution. Viscosity and density of water and molecular diffusivity of CO2 in water are 1103kg/ms,1000kg/m3 and 2109m2/s. a. Calculate the maximum length of the wetted-wall column for which penetration theory is valid, (15 points) b. Calculate the average rate of absorption of CO2 using Higbie model as kg/h. (10 points). Conditions for which penetration theory is valid are: i) Depth of penetration, z is the distance grom the interface at where local velocity of the liquid is 95% of the surface velocity of the liquid. ii)At the depth of penetration the ratio of (CACAo) to (CAiCAo) is 0.01