An engineer at a pulp plant is considering the feasibility of sparging a waste gas stream containing a small concentration of chlorine gas into a chlorine-bleaching unit in order to augment the chlorine requirements for the unit. In this processing unit, the waste gas stream at 1:013 × 105 Pa containing 0.2 mol% chlorines at the flow rate of the streams is bubbled countercurrent to the absorbing water stream. The gas film coefficient, ky, is 1 kg mol/m2 h (?y mole fraction) and the liquid-film coefficient, kx, is 10 kg mol/m2 h (?x mole fraction). The Henry's law constant, H, is 6:13 × 104 Pa/ (kg mol/m3). The gas stream, containing 0.2 mol% chlorine gas, is in contact with the aqueous stream containing 2:6× 10-3 kg mol Cl2/m3.
Determine
a. the overall coefficient, Kx;
b. the chlorine molar flux;
c. the interfacial compositions;
d. the percent resistance to mass transfer in the liquid phase.