Heterogeneous Fenton reagent, as a strong oxidizer, has been used widely in the treatment of wastewater. We prepared Fe2O3/γ-Al2O3 catalyst by impregnation method and characterized it by powder X-ray diffraction (XRD...Heterogeneous Fenton reagent, as a strong oxidizer, has been used widely in the treatment of wastewater. We prepared Fe2O3/γ-Al2O3 catalyst by impregnation method and characterized it by powder X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM). Test results show that Fe2O3 crystal was compounded on the γ-Al2O3 carrier. We tested and optimized Fe2O3/γ-Al2O3/H2O2 and Fe2O3/γ-Al2O3/H2O2 /UV processes to remediate organic material of phenol, using phenol solution with an initial concentration of 250 mg/L as a representative of phenolic industrial wastewater. The preparation conditions were optimized based on performance of Fe2O3/γ-Al2O3 catalyst and the processes to degrade phenol in aqueous environments. The experimental results showed that the phenol removal perfomance with Fe2O3/γ-Al2O3/H2O2 /UV was more complete than with Fe2O3/γ-Al2O3/H2O2 and degradation rate of phenol reached 89.4% and 94.7% respectively after reaction for 2 h.展开更多
Catalytic Wet Air Oxidation process is an efficient measure for treatment of wastewater with great strength which is not biodegradable. Heterocatalysts now become the key investigation subject of catalytic wet air oxi...Catalytic Wet Air Oxidation process is an efficient measure for treatment of wastewater with great strength which is not biodegradable. Heterocatalysts now become the key investigation subject of catalytic wet air oxidation process due to their good stability and easy separation. In the paper, CuO-SnO2-CeO2/γ-Al2O3 catalysts are prepared by impregnation method, with SnO2 as a doping component, CuO as an active component, CeO2 as a structure stabilizer, γ-Al2O3 as a substrate. XPS test is carried out to investigate the effect of Sn on the chemical surrounding of Cu and O element on the catalyst surface and their catalytic activity. It is shown that the right doping of Sn can increase Cu+content on the catalyst surface, as a result the quantity of adsorption oxygen is also increased. It is found that Cu+content on the catalyst surface is one of the primary factors that determin catalytic activity of catalyst through analyzing the catalytic wet air oxidation process of phenol.展开更多
基金Funded by the Natural Science Foundation of the Education Committee of Heilongjiang Province (No. 12511371)
文摘Heterogeneous Fenton reagent, as a strong oxidizer, has been used widely in the treatment of wastewater. We prepared Fe2O3/γ-Al2O3 catalyst by impregnation method and characterized it by powder X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM). Test results show that Fe2O3 crystal was compounded on the γ-Al2O3 carrier. We tested and optimized Fe2O3/γ-Al2O3/H2O2 and Fe2O3/γ-Al2O3/H2O2 /UV processes to remediate organic material of phenol, using phenol solution with an initial concentration of 250 mg/L as a representative of phenolic industrial wastewater. The preparation conditions were optimized based on performance of Fe2O3/γ-Al2O3 catalyst and the processes to degrade phenol in aqueous environments. The experimental results showed that the phenol removal perfomance with Fe2O3/γ-Al2O3/H2O2 /UV was more complete than with Fe2O3/γ-Al2O3/H2O2 and degradation rate of phenol reached 89.4% and 94.7% respectively after reaction for 2 h.
文摘Catalytic Wet Air Oxidation process is an efficient measure for treatment of wastewater with great strength which is not biodegradable. Heterocatalysts now become the key investigation subject of catalytic wet air oxidation process due to their good stability and easy separation. In the paper, CuO-SnO2-CeO2/γ-Al2O3 catalysts are prepared by impregnation method, with SnO2 as a doping component, CuO as an active component, CeO2 as a structure stabilizer, γ-Al2O3 as a substrate. XPS test is carried out to investigate the effect of Sn on the chemical surrounding of Cu and O element on the catalyst surface and their catalytic activity. It is shown that the right doping of Sn can increase Cu+content on the catalyst surface, as a result the quantity of adsorption oxygen is also increased. It is found that Cu+content on the catalyst surface is one of the primary factors that determin catalytic activity of catalyst through analyzing the catalytic wet air oxidation process of phenol.
