Q1 (3 marks) Engineers are required to design a reactor to degrade dyes in a wastewater stream from a dye plant. The flow rate of the water stream is 0.05m3/d and the concentration of dyes in the input stream is 68mg/L. Assuming the water in the reactor is completely mixed and the first-order reaction rate of the pollutant is 1/d. The concentration of the pollutant in the effluent are required to be no more than 2mg/L. Please determine the smallest volume of the reactor