Q#2. The removal of an organic contaminant (A) from an industrial waste stream is to be achieved isothermally via a chemical reaction for which the following kinetics are observed: -(rate)a= kCA/ (1+k2CA)2 where kj = 0.02 min-1 and k = 2.0 lit/mole The concentration of the contaminant A is 5 mol/liter, and its 99.8% removal is desired. You are to consider the following configurations for optimum design: (a) PFR/CSTR combination (which should come first?) (b) A combination of two CSTRS