(Solved): Simultaneous transport and transformation. A stream of ozone-enriched air ( 3% ozone by volume) is ...

Simultaneous transport and transformation. A stream of ozone-enriched air ( $3\%$ ozone by volume) is bubbled into a reactor as part of a disinfection strategy. Water entering the reactor is free of ozone. $K_H=0.011\mathrm{M}/\mathrm{atm}$ and $K_{L}a=18{\mathrm{h}}^{?1}$ for ozone in this system. Ozone $\left({\mathrm{O}}_3\right)$ dissolved in water is unstable. The kinetics of decomposition are complex, but the rate can be approximated as first-order with respect to dissolved ozone. The first-order rate coefficient is $\mathrm{pH}$-dependent and, at pH 8.0 and $25\mathrm{C}$, is $12{\mathrm{h}}^{?1}$ in the system of interest. Find the steady-state concentration (mg/L) of dissolved ozone in the effluent if the reactor is operated as a CMFR with a $15?\min$ retention time.