Volatile organic compounds (VOC) in air should be removed in order to reduce their effect on the human health and environment. Gas absorption could be an economical alternative if used solvent is recovered. Suppose VOC containing air stream is sent to an absorber and 80% of the VOC (A) in air is removed by absorbing into oil. The mole fraction of the VOC in air is 0.07. The oil entering the top of the absorber contains 0.030 mol frac VOC and the mole fraction of the VOC in the liquid leaving from the absorber is 0.135. The absorber is operated at 25C and 1 atm. To recover the used solvent, the liquid stream is sent to a stripper which is operated at 110C and 1 atm. Open, superheated pure steam is used to strip the VOC out of the VOC-rich oil at 110C. Oil (pure)-to-steam (VOC-free) flow rate ratio = 2.0. (a) The molar flow rate ratio of A-free oil to A-free gas in the absorber (L'/V'), (b) The number of theoretical plates in the absorber, (c) The minimum steam flow rate required to remove the VOC from oil under given terminal conditions, (d) The number of theoretical plates in the stripper. (e) Discuss the effect of increasing the temperature of the stripper from 110C to 150C. (f) Discuss the effect of decreasing the pressure of the stripper to below 1 atm.