| 水质对UV/H2O2降解17α-乙炔基雌二醇（EE2）的影响 |
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| 中文关键词 UV/H2O2 EE2 阴离子 光降解速率常数 内分泌干扰物 |
| 英文关键词 UV/H2O2 17-α-ethynyestradiol anions photodegradation rate constant endocrine disrupting chemicals |
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| 中文摘要 |
| 采用UV/H2O2间歇式光氧化反应器，研究了溶液pH值、腐殖酸及水中常见阴离子HCO3-、NO3-、CO32-、Cl>-和SO42-对UV/H2O2工艺降解17?-乙炔基雌二醇（EE2）的影响.结果表明,UV/H2O2工艺可以有效地去除水中的EE2，光降解过程符合一级反应动力学模型.双氧水投加量为5mg/L时，在14W低压汞灯照射下，EE2在自来水和蒸馏水中的光降解一级反应速率常数为0.0630min-1和0.1324min-1.溶液中的腐殖酸和阴离子HCO3-、NO3-、Cl-、SO42-对EE2的光降解反应有抑制作用，四种阴离子浓度为5mmol/L时，抑制作用依次为HCO3- > SO42- > Cl- > NO3-, HCO3-可使光降解速率常数降低到50%.自来水中的光降解速率常数低于蒸馏水中的光降解速率常数是水中多种离子影响的结果. |
| 英文摘要 |
| Effect of pH、HA and anions HCO3-、NO3-、CO32-、Cl- and SO42- in aqueous solution on the photodegradation of 17α-ethynyestradiol（EE2）was studied by using a batch photo-reator.The results showed that 17α-ethynyestradiol（EE2）could be removed effectively by the UV/H2O2 process. The rate of photodegradation in aqueous solution follows first-order kinetics. When H2O2 was dosed as 5mg/L, irradiated by a 14W low pressure mercury vapor discharge lamp, the first order photodegradation rate constant of EE2 in distilled water and tap water were 0.0630min-1 and 0.1324min-1 respectively. HA、HCO3-、NO3-、CO32-、Cl- and SO42- have inhibitory action on EE2 photodegradation.when their concentrations at 5mmol/L,their inhibitory action: HCO3- > SO42- > Cl- > NO3-. HCO3- induced photodegradation rate constant of EE2 reduced by half, It was anions synthesize effect that caused photodegradation rate constant of EE2 in tap water lower than distilled water. |
