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A packed tower has been designed to strip component A from an aqueous stream into a counter-flowing air stream. At a given plane in the tower, the concentrations of the two adjacent streams are pA, G = 4 × 103 Pa and cA, L = 4 kg mol/m3 of solution. Under the given flow conditions, the overall gas mass-transfer coefficient, KG is equal to 2:46 × 10-8 kg mol/m2 s Pa and 60% of the resistance to mass transfer is encountered in the gas phase. At the tower's operating condition of 290 K and 1:013 × 105 Pa, the system satisfies Henry's law with a Henry's law constant of 1400 Pa/(kg mol/m3).
Determine
a. the individual gas-film coefficient, kG;
b. the individual liquid-film coefficient, kL;
c. the interfacial gas concentration, pAL;
d. the overall liquid mass-transfer coefficient, KL.
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