本文以苯酚模拟废水研究对象，以水热合成方法制备的纳米Fe3O4为催化剂

In this paper, phenol simulated wastewater was used as the research object, nano-Fe3O4 prepared by hydrothermal synthesis method was used as catalyst, air and hydrogen peroxide were used as oxidant, and the catalytic oxidation effect of phenol was studied. The structure was characterized by SEM, N adsorption/desorption and other methods, and the catalytic ozonation treatment phenol wastewater system was constructed, the catalytic conditions were optimized, the treatment efficiency was improved, and the catalytic mechanism and catalyst stability were discussed in depth. The research found that alone When hydrogen peroxide was used as oxidant or air alone was used as oxidant, the removal rate of phenol was not ideal, but when hydrogen peroxide was oxidized together with air, the removal rate of phenol was significantly increased. The experimental results show that the removal rate of phenol and COD are significantly accelerated with the increase of temperature and catalyst dosage, and the removal rate of phenol does not increase with the increase of hydrogen peroxide dosage, but there is an optimum value. Studies have shown that α-FeO ​​exhibits excellent synergistic effect on ozonolysis, has good continuous removal capacity and structural stability of phenol, and can provide technical reference for efficient removal of phenol-containing wastewater or refractory wastewater.

This article focuses on the study of phenol simulated wastewater, using nano Fe3O4 prepared by hydrothermal synthesis method as catalyst and air and hydrogen peroxide as oxidants to study the catalytic oxidation effect of phenol. The structure was characterized by SEM, N adsorption/desorption methods, and a catalytic ozonation treatment system for phenol wastewater was constructed. The catalytic conditions were optimized to improve treatment efficiency, and the catalytic mechanism and catalyst stability were discussed in depth. The study found that the removal rate of phenol was not ideal when hydrogen peroxide was used as the oxidant alone or air was used as the oxidant alone, while when hydrogen peroxide was oxidized with air, The phenol removal rate significantly increased. The experimental results show that the removal rate of phenol and COD significantly accelerate with the increase of temperature and catalyst dosage. The removal rate of phenol does not increase with the increase of hydrogen peroxide dosage, but there is an optimal value. Research shows that, α- FeO shows excellent ozone decomposition synergism, has good continuous phenol removal ability and structural stability, and can provide technical reference for efficient removal of phenol containing wastewater or refractory wastewate

In this paper, the simulated phenol wastewater was studied, and the catalytic oxidation effect of phenol was studied with nano-Fe3O4 prepared by hydrothermal synthesis as catalyst and air and hydrogen peroxide as oxidants. The structure of the catalyst was characterized by SEM, N adsorption/desorption, etc., and a system for treating phenol wastewater by catalytic ozone oxidation was established. The catalytic conditions were optimized to improve the treatment efficiency, and the catalytic mechanism and stability of the catalyst were deeply discussed. It was found that the phenol removal rate was not ideal when hydrogen peroxide was used alone or air was used alone, but when hydrogen peroxide was oxidized with air, the phenol removal rate was obviously increased. The experimental results show that the removal rate of phenol and COD are obviously accelerated with the increase of temperature and catalyst dosage, and the removal rate of phenol does not increase with the increase of hydrogen peroxide dosage, but there is an optimal value. The results show that α-FeO exhibits excellent ozone decomposition synergy, and has good continuous phenol removal ability and structural stability, which can provide technical reference for efficient removal of phenol-containing wastewater or refractory wastewater.