Question

A wastewater stream is introduced to the top of a mass-transfer tower where it flows countercurrent to an air stream. At one point in the tower, the wastewater stream contains 1× 10-3 g mol A/m3 and the air is essentially free of any A. At the operating conditions within the tower, the film mass-transfer

At the operating conditions within the tower, the film mass-transfer coefficients are kL =5×10 kg/mol/m s.(kgmol/m) and kG =0.01kgmol/m .s.atm.The

concentrations are in the Henry’s law region where pA,i = HcA,i with H = 10 atm/(kg mol/m3). Determine

a) The overall mass flux of A.
b) The overall mass-transfer coefficients, KL and KG.

Answer 1