Absorption and adso

A plate column absorber is used to recover 92% of sulfur dioxide. The inlet gas stream flow rate is 420 kg mol/h to an absorption tower at 303 K and 1.013x10 Pa. The inlet gas stream contains 5 mol% of sulfur dioxide and the rest is inert gas. The scrubbing liquid entering the top of the column contains pure water. The equilibrium relation for the sulfur dioxide in the gas-liquid is ya = 0.65 XA. i. Calculate the minimum liquid flow rate Lmin required in this process. (6 Marks) ii. Estimate the number of tray needed by using analytical method for operating flowrates 1.2 times of the minimum liquid flowrate. (6 Marks) Equilibrium isotherm data for adsorption of dye from an industrial textile wastewater to a silica gel are as follows: Table 2: Equilibrium adsorption data C (g/cm) 0.100 0.2175 0.475 0.675 2.350 4.875 Q (g color/ g silica gel) 0.650 1.150 1.875 2.100 3.075 3.225 (8 Marks) i) Validate if the equilibrium data fits the Langmuir Isotherm. ii) Produce the constants of the equation using the given unit. (4 Marks)