a) A CMFR is to be designed to remove contaminant A from water with a steady-state efficiency of 95 percent. The decay reaction is zeroth order, with a rate constant of 0.1M/h. The inlet concentration of A is 0.5 M. What hydraulic detention time is required to achieve the desired efficiency?
b)another CMFR is to be designed to remove contaminant B from water with a steady-state efficiency of 95 percent. The contaminant is consumed by a second-order decay reaction with rate constant of 0.004/(M)(S). The inlet concentration of B is 0.5 M, and the flow rate of water that must be treated is 0.3 m^3/s. How large must the reactor be?