Three Continous Stirred Tank Reactors (CSTRs) of equal volume are to be used in serie to treat wastewater. The influent flow has a pollutant concentration of 150 mg/L with a flow rate of 380 L/min. Th reaction is first-order with a rate constant of 0.4/hr. Expressing all volume in liters, determine: a. The residence time of the wastewater in each reactor if the overall conversion is 90% and the required volume of each of the reactors. b. The total residence time and the total volume for the three reactors. c. The concentration of the pollutant in effluent from each of the reactor. d. The residence time and the volume for a single Continous Stirred Tank Reactor (CSTR) having the same conversion or removal of the pollutant.

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