【摘要】 采用Fenton氧化法同时降解水溶液中磺胺吡啶(SPY)、磺胺二甲基嘧啶(SMZ)和磺胺甲噁唑(SMX)。系统考查了初始H2O2浓度、Fe2+浓度、pH对3种磺胺类抗生素降解性能的影响。结果表明,3种磺胺抗生素被完全降解的最佳Fenton氧化条件是:H2O2浓度为2.0 mmol/L,Fe2+浓度为0.10 mmol/L,pH为3.0~3.5,反应时间为20 min。Fenton试剂对3种磺胺类抗生素的降解符合一级反应动力学,速度常数为0.0318~0.2002 min-1。更多还原

【Abstract】 The degradability of sulfapyridine,sulfamethazine and sulfamethoxazole from aqueous solution with Fenton process was investigated using different parameters,such as pH value,H2O2 and Fe2+ concentrations. The result showed that the optimum Fenton oxidation conditions for complete removal of sulfamethoxazole,sulfapyridine and sulfamethazine,simultaneously were H2O2 concentration of 2. 0 mmol/L,Fe2 +concentration of 0. 10 mmol/L,pH of 3. 0 to 3. 5 and reaction time of 20 min. Fenton degradation followed a first-order kinetic model with reaction constant of 0. 0318 to 0. 2002 min- 1.更多还原