Photochemical reactor modeling: a case-study problem. Although radiation is important in heat transfer, an analogous model can be used in the design of photochemical reactors. The modeling of these reactors….
reduce the concentration of the pollutantbefore been discharged to the enviroment.
A waste stream is to be treated by holding it for some time in a surge tank prior to discharging it into a river. The waste stream has a dissolved toxic species A, which is unstable and undergoes a first-order chemical reaction. The purpose of the surge tank is to allow enough residence time for some decomposition of A to occur in order to reduce the concentration of the pollutant. Derive an expression for the exit concentration as a function of time and the final steady-state concentration in the system. Assume that the tank is well stirred and use the backmixed assumption. The problem is sketched in Fig. 2.2.