UV Photolysis Coupled with H2O2 Oxidation for Accelerated Sulfamethoxazole(SMX)Degradation and Mineralization
Antibiotics are widely used to treat human infections and in livestock and poultry breeding, and they often are detected in surface water.Sulfamethoxazole (SMX) is one widely used antlioiotic duc to its broad-spectrum application, stability, and low cost.This work investigated advanced oxidation techniques used for SMX degradation and mineralization.The approaches were UV photolysis alone (UV), H2O2 oxidation alone (H2O2), and UV photolysis coupled with H2O2 oxidation (UV/H2O2).Experimental results indicated that coupling UV photolysis with H2O2 oxidation significantly accelerated the SMX removal rate and also increased the degree of SMX mineralization.The SMX removal rates by UV/H2O2 were 31% to 73% greater than that with UV alone for the range of initial SMX concentrations tested (20 to 80 rag/L).For UV photolysis coupled with H2O2 oxidation, H2O2 was decomposed into hydroxyl radicals, which attacked chemical bonds of SMX intermediates to bring about TOC removal and release of NO3-, NH4+, and SO42-.
Sulfamethoxazole UV photolysis peroxide oxidation (H2O2) degradation mineralization
Ning Yan Yue Yu Shihui Pan Yongming Zhang Rui Liu
Department of Environmental Engineering College of Life and Environmental Science,Shanghai Normal Un Zhejiang Provincial Key Laboratory of Water Science and Technology,Department of Environmental Techn
国际会议
浙江嘉兴
英文
111-116
2013-10-24（万方平台首次上网日期，不代表论文的发表时间）