Fe-Zr-Al Pillared Modified Montmorillonite For The Catalytic Wet Peroxide Oxidarion Of Basic Magenta:Characterization And Catalytic Activity

China's industry is developing rapidly,the depletion of resources is becoming more and more serious,and the situation of water resources is even more severe.In this paper,catalytic wet hydrogen peroxide oxidation technology?CWPO?is used to treat wastewater.Committed to efficient degradation of wastewater and recycling.Iron-zirconium-aluminum/pillar montmorillonite?Fe-Zr-Al/Mt?catalyst was prepared by cation exchange method using montmorillonite as carrier.Samples were prepared at different Fe/Zr molar ratios,active metal loading??Fe+Zr?/?Fe+Zr+Al?,AML?,and calcination temperatures.The structural characteristics and morphology of the samples were analyzed by FT-IR,UV-Vis,XRD,BET,SEM,TG/DTG characterization,and the optimal preparation conditions were screened by the evaluation of wastewater color and COD removal rate.The results show that:Fe/Zr=7/3,AML=7%,the calcination temperature is 500?,the sample has high crystallinity,regular crystal form,structural dispersion.Specific surface area(175 m²·g^-1)and d₀₀₁?1.81 nm?have increased significantly.Fe-Zr-Al/Mt was used to degrade basic fuchsin simulated dye wastewater by CWPO.After 180 min reaction,the chroma removal rate of wastewater was close to 100%,and the COD removal rate was 80.82%.In the process of columnarization,the ion exchange was accelerated by microwave,and the Fe-Zr-Al/Mt?MW?catalyst was prepared for wastewater treatment.The reaction was carried out for 180 min,and the COD removal rate was 80.85%.In the conventional water bath CWPO reaction system,the initial concentration of 100 mL 200mg·L^-1 basic fuchsin simulated dye wastewater was treated.The optimum degradation conditions were selected:reaction temperature 60?,initial pH=3.00,catalyst dosage 0.07 g.After 180 min of reaction,the COD removal rate of wastewater was 80.85%.In the microwave CWPO reaction system,the power was 250 W,the reaction was 60 min,and the COD removal rate was 82.15%.Investigate the color and COD removal rate of wastewater in different reaction systems,and combine the active group capture experiments to study the degradation mechanism of different reaction systems.The microwave promotes the reaction system to generate more·OH through the"photoelectric effect",which enhances the wastewater treatment capacity of the reaction system.The kinetics of CWPO treated basic magenta simulated dye wastewater was studied by using one/two-step pseudo first-order or Fermi's equation as models.The conventional water bath and microwave at different temperatures were fitted.The results show that the Fermi equation has a higher degree of agreement,and each experimental point can better fall on the fitting curve to obtain reliable kinetic parameters.