The Degradation Characteristics Of Benzoquinones Compounds

With the rapid development of industrialization,a large amount of wastewater containing benzene is produced in the chemistry,printing,oil and other industries,and quinone compounds are produced in the degradation process of benzene series.thus,it is meaningful to study the degradation characteristics of quinone compounds.In this paper,benzoquinone is considered as the main object,the degradation of quinone compounds in the light/Fenton system and the light/Fe2+/S2O82-system is analyzed.The results showed that the degradation rates of quinone and benzoquinones were better than those of UV/Fenton system and UV/Fe2/S2O82-system in visible light/Fenton system and visible/Fe2+/S2O82-system,the reason is that the quinone compounds are photosensitive,and the reactive oxygen species produced by photosensitivity(1O2 and O2-·etc.)causes more SO4-··and ·OH in the system to improve the degradation rate.The ability of reddish brown material to produce 102 and O2-·is stronger than that of quinone,it shows that its photosensitivity is better than that of quinone.Benzoquinone and benzene and phenol solutions formed red brown substance in the degradation process of visible light/Fenton,the structure of degradation products was similar by FTIR and UV-vis.Through analysis,the effect of visible light/Fe2+/S2O82-method is better than Fe2+/S2O82-method on the treatment of oil production wastewater.The UV-vis shows that the alkanes have the same transformation mode in the two system,but the benzene series are different.The FTIR and XRD analysis showed that the formation of polyiron in the two system was not exactly the same.The generated flocculation performance of the poly ferric compounds and the photosensitivity of the intermediates are the reasons for the visible light method being better than that of the common method.