The Relative Importance of Different Oxidants in the Degradation Process of Quinoline Using O3/UV
O3/UV降解喹啉过程中不同氧化剂的相对重要性

In this paper the relative importance of different oxidants in the degradation process of quinoline using O3/UV was studied. O3 and ·OH played the most important roles in removing quinoline. Their concentrations were measured using indigo method and ·OH-robe compound (p-CBA) method respectively, and the relative importance of these two oxidants was quantitatively determined. The secondorder reaction rate constant between quinoline and hydroxyl radical was calculated as 6. 65×109mol·(L·s)-1 . In the present experimental condition, ·OH and O3 oxidations contributing to the total degradation rate of quinoline were 88% and 12% respectively. Increasing the hydroxyl radical concentration will help to improve the total removal rate of quinoline.