针铁矿及磁性氧化铁对四环素的光催化及响应面优化  

Response Surface Optimization for Tetracycline Photocatalysis by Goethite and Magnetic Oxide Rron

作　　者：梅春勤 胡杰 李玉琼 MEI Chunqin;HU Jie;LI Yuqiong(Jinsha County Ecological Environment Monitoring Station,Bijie 551800,China;Guizhou Provincial Liquor Product Quality Inspection and Testing Institute,Renhuai 564500,China)

机构地区：[1]金沙县生态环境监测站,贵州毕节551800 [2]贵州省酒类产品质量检验检测院,贵州仁怀564500

出　　处：《品牌与标准化》2024年第5期14-16,共3页

摘　　要：在H_(2)O_(2)/四环素体系下,分别以针铁矿(α-FeOOH)和磁性氧化铁(四氧化三铁/Fe3O4)为催化剂,通过单因素实验,确定了pH值、H_(2)O_(2)加入量、四环素浓度(Tc)和催化剂用量对四环素去除效果最佳的范围,再通过响应面设计实验,得到最优去除条件。当以α-FeOOH为催化剂时,在pH=5、H_(2)O_(2)=0.6 mL、Tc=41 mg/L、α-FeOOH=0.3 g条件下,四环素的去除率可以达到98.02%;当以Fe3O4为催化剂时,在pH=3、H_(2)O_(2)=0.6 mL、Tc=14 mg/L、Fe3O4=0.3 g条件下,四环素的去除率能达到90.45%。以α-FeOOH为催化剂,四环素的去除率优于Fe3O4,而进行响应面分析,以Fe3O4为催化剂,四环素的去除率显著性优于α-FeOOH。In the H_(2)O_(2)/tetracycline system,with goethite(α-FeOOH)and magnetic iron oxide(magnetite/Fe3O4)as catalysts,respectively,the optimal ranges of pH value,H_(2)O_(2)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.Whenα-FeOOH is used as the catalyst,under the conditions of pH=5,H_(2)O_(2)=0.6 mL,Tc=41 mg/L,andα-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,H_(2)O_(2)=0.6 mL,Tc=14 mg/L,and Fe3O4=0.3 g,the removal rate of tetracycline could reach 90.45%.Usingα-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 ofα-FeOOH.

关 键 词：四环素 针铁矿 磁性氧化铁 PH H_(2)O_(2) 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]