Study on Oxidation Characteristics of Phenanthrene in the Fenton System

In order to explore the influential factors for oxidation of phenanthrene by Fenton reaction,the oxidation efficacy at different concentration of H2O2 or Fe2+ for phenanthrene in soil samples were studied by batch process in flasks,and the oxidation products were determined by GC/MS.The results showed that,the reaction rate was very fast in the first 0.5 h,during which most of phenanthrene were degraded,and then the reaction rate slowed down.The higher the H2O2 concentration,the higher the oxidation efficacy for phenanthrene was.With the same concentration of H2O2,the oxidation efficacy at 5 mmol·L-1 Fe2+ was lower than that at 1 mmol·L-1 Fe2+.Three oxidation products were verified by GC/MS.Oxidized by Fenton reagent,the aromatic nucleus of phenanthrene was broken to produce kinds of oxo-compounds,which could be furthur transformed.