摘要
Abstract
In the H2O2/tetracycline system,with goethite(α-FeOOH)and magnetic iron oxide(magnetite/Fe3O4)as catalysts,respectively,the optimal ranges of pH value,H2O2 dosage,tetracycline concentration(Tc),and catalyst dosage for tetracycline removal are determined through single-factor experiments.Then,through response surface methodology(RSM)experiments,the optimal removal conditions are obtained.When α-FeOOH is used as the catalyst,under the conditions of pH=5,H2O2=0.6 mL,Tc=41 mg/L,and α-FeOOH=0.3 g,the removal rate of tetracycline could reach 98.02%.When Fe3O4 is used as the catalyst,under the conditions of pH=3,H2O2=0.6 mL,Tc=14 mg/L,and Fe3O4=0.3 g,the removal rate of tetracycline could reach 90.45%.Using α-FeOOH as the catalyst,the removal rate of tetracycline is better than that of Fe3O4.However,through response surface analysis,when Fe3O4 is used as the catalyst,the removal rate of tetracycline is significantly better than that of α-FeOOH.关键词
四环素/针铁矿/磁性氧化铁/pH/H2O2Key words
tetracycline/goethite/magnetic oxide iron/pH/H2O2
