Kinetics of 2-propanol oxidation using ozone based advanced oxidation processes(AOPs)

kinetics of 2-propanol oxidation using advanced oxidation processes (AOPs) is studied. The raw experimental data were obtained from literature. AOPs are based on the formation of hydroxyl radicals which are powerful oxidants. The active chemicals studied in the present work include O3, O3/H2O2 (in three different ratios H2O2/O3= 0.25, 0.50, 1.00) and UV assisted processes of the above mentioned AOPs. A major difference between ozone based AOPs and H2O2/UV process has been observed. The kinetic constants of IPA in ozone based processes are at least 2 times greater than the H2O2/UV process. Two different pathways are reported for completion of this reaction and either has specific byproducts, but the main byproduct of IPA degradation is acetone. The effect of pH on the degradation rate has been studied and it was concluded that at low pH, molecular ozone oxidation is dominant and at high pH, hydroxyl radicals play great role in oxidation of 2-propanole. In this case use of UV irradiation lonely is the best choice to achieve highest kinetic constant and removal efficiency.

Keywords:

2-propanol , isopropanol , degradation , first order kinetic , advanced oxidation process , AOP , ozone