Study On The Adsorption And Catalytic Ozone Oxidation Performance Of γ-Al₂O₃ Loaded Metal Oxides On Cep Halothin Wastewater

In the 20th century,antibiotics were developed to treat illnesses brought on by different pathogens.The leftovers left behind after the use of different antibiotics pose a serious threat to the safety of the world’s water supplies,with CFXhalosporin antibiotics playing a significant role.In China today,wastewater containing CFXhalosporin antibiotics is primarily treated using sop Histicated oxidation and adsorption techniques.Al₂O₃is frequently used to prepare products,adsorbents,catalyst carriers,and other emerging green chemical substances to meet environmental protection requirements because it is less expensive,has a larger specific surface area,is more porous,is better formable,has a lower specific surface acidity,and has more functional groups than other materials.Metal oxides are typically used to further increase the catalytic impact of-Al₂O₃and the adsorption of antibiotics.In this study,we prepared metal-loaded-Al₂O₃materials and used CFXhalothin（CFX）as a research object for the adsorption and catalytic ozone oxidative degradation of CFX.Additionally,the optimization of the active components and the influencing variables were carefully examined.First,the performance of different metal-loaded-Al₂O₃in adsorbing CFX was investigated.The screening revealed that the loaded Cu metal oxide had the best adsorption impact.The findings demonstrated that a 30 minute adsorption period,a60 mg Cu A dosage,and a p H of 5 for the water sample allowed for the greatest CFX adsorption by Cu A,which could achieve 41%.The results of the surface morp Hology analysis,surface potential determination,surface functional group analysis,surface crystalline structure analysis,elemental composition analysis,and the results of the adsorption kinetics and adsorption isotherm showed that the adsorption of Cu A on water displayed the characteristics of the proposed secondary kinetics and internal particle diffusion,primarily including three stages of boundary expansion,surface to inner layer expansion and inner layer slowly expansion.The adsorption p Henomenon of Cu A is not only The adsorption of Cu A is not only p Hysical adsorption or chemisorption,but also the result of the combined effect of several mechanisms.Secondly,the catalytic ozone oxidation performance of CFX by different metal loadedγ-Al₂O₃was investigated,and the screening concluded that the loaded Ce metal oxide was the best one for adsorption.Then the influence factors of Ce-γ-Al₂O₃（Ce A）were discussed in combination with experiments,and its surface p Hysical and chemical properties and catalytic ozone oxidation mechanism were analyzed,and the results showed that under the conditions of 30 min catalytic ozone oxidation duration,Ce A dosing amount of 70 mg,ozone dosing amount of 5 mg/（L-min）,and p H value of water sample of 8,Ce A catalytic ozone oxidation removed CFX The best effect was achieved with 90%.The material characterization of Ce A was carried out to analyze its catalytic ozone oxidation mechanism,and the preparation conditions of Ce A were optimized,and it was found that it could effectively remove CFX under the conditions of oscillation speed of 150 r/min,oscillation ambient temperature of 25°C,oscillation duration of 3 h,calcination ambient temperature of 500°,and calcination duration of 3 h.After that,the catalytic active components were analyzed.It is known that the Ce-O-Mn/γ-Al₂O₃（CMA）catalyst made by further loading Mn on top ofγ-Al₂O₃loaded with Ce has a better removal efficiency of CFX than that of the single component Ce A.After that,the influencing factors were explored,and it is known that:in the reaction time of 30 min,the dosage of CMA is 50 mg,the ozone dosage is4 mg/（L-min）,and the p H value of water sample was 8,the CMA-catalyzed ozone oxidation had the best effect on CFX removal,which could reach 94%.