2. 2. A 2-L continuous flow reactor was initially inoculated with 50mg/L of biomass (this is not X0 ). The kinetic parameters for the bacteria are as follows. max=2.5mg/day/mgbiomassKs=50mgCOD/LY=0.5mgbiomass/mgCODkd=0.04day1 The reactor was fed with readily biodegradable substrate (COD=400mg/L) at a flow rate of 42mL/hr. (a) Determine the COD concentration in the effluent at steady state. (Hint: use mass balance and Monod equation; assume X0=0 ) (b) Estimate the concentration of bacteria after the reactor reaches steady state. (c) If the reactor was inoculated with 500mg/L biomass initially, what would be the number of bacteria at steady state? (d) What is the steady state biomass concentration and COD concentration if the flow rate is increased to 350mL/hr ? (e) Determine the required size of the reactor to reduce the soluble substrate concentration to 30mg/L. What concentration of biomass would be present in the reactor