Degradation of the antibiotic sulfamonomethoxine sodium in aqueous solution by photo-Fenton oxidation  

作　　者：SUN JianHui FENG JingLan SHI ShaoHui PI YunQing SONG MengKe SHI Yan 

机构地区：[1]College of Chemistry and Environmental Sciences,Henan Normal University,Henan Key Laboratory for Environmental Pollution Control,Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control,Ministry of Enducation,Xinxiang 453007,China

出　　处：《Chinese Science Bulletin》2012年第5期558-564,共7页

基　　金：supported by the Key Scientific and Technological Program of Henan Province (0522030700, 102102310303 and 0611020900)

摘　　要：In this study, photo-Fenton oxidation was applied to degradation of sulfamonomethoxine sodium (SMMS) in aqueous solution. The operation parameters of pH, temperature, and concentrations of H2O2, Fe2+ and SMMS were investigated. The optimum conditions for the photo-Fenton process were determined as follows: [SMMS]=4.53 mg/L, pH 4.0, [H2O2]=0.49 mmol/L, [Fe2+]= 19.51 μmol/L and T=25°C. Under these conditions 98.5% of the SMMS degraded. The kinetics were also studied, and degradation of SMMS by the photo-Fenton process could be described by first-order kinetics. The apparent activation energy was calculated as 23.95 kJ/mol. Mineralization of the process was investigated by measuring the chemical oxygen demand (COD), and the COD decreased by 99% after 120 min. This process could be used as a pretreatment method for wastewater containing sulfamonomethoxine sodium.In this study, photo-Fenton oxidation was applied to degradation of sulfamonomethoxine sodium （SMMS） in aqueous solution. The operation parameters of pH, temperature, and concentrations of H2O2, Fe^2＋ and SMMS were investigated. The optimum con ditions for the photo-Fenton process were determined as follows： [SMMS]=4.53 mg/L, pH 4.0, [H2O2]=0.49 mmol/L, [Fe^2＋]= 19.51μmol/L and T=25℃. Under these conditions 98.5% of the SMMS degraded. The kinetics were also studied, and degradation of SMMS by the photo-Fenton process could be described by first-order kinetics. The apparent activation energy was calcu- lated as 23.95 kJ/mol. Mineralization of the process was investigated by measuring the chemical oxygen demand （COD）, and the COD decreased by 99% after 120 min. This process could be used as a pretreatment method for wastewater containing sulfa- monomethoxine sodium.

关 键 词：FENTON氧化 磺胺间甲氧嘧啶 氧化降解 水溶液 抗生素 钠 表观活化能 化学需氧量 

分 类 号：X703.1[环境科学与工程—环境工程] S859.7[农业科学—临床兽医学]