Factors Affecting UV/H2O2 Oxidation of 17α‐Ethynyestradiol in Water |
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| Authors: | Qingsong Li Naiyun Gao Yang Deng Xiaoyan Ma Wenhai Chu |
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| Institution: | 1. Water Resources and Environmental Institute, Xiamen University of Technology, Xiamen, Fujian, P. R. China;2. State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, P. R. China;3. Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ, USA;4. College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou, Zhejiang, P. R. China |
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| Abstract: | In this study, bench‐scale experiments were conducted to examine the UV/H2O2 oxidation of 17α‐ethynyestradiol (EE2) in water in a batch operation mode. The EE2 degradation exhibited pseudo‐first‐order kinetics, and the removal was ascribed to the production of hydroxyl radicals (?OH) by the UV/H2O2 system. Typically, the EE2 oxidation rate increased with increasing UV intensity and H2O2 dose, and with deceasing initial EE2 levels and solution pH. At EE20 = 650 µg/L, UV intensity = 154 µW/cm2, H2O2 = 5 mg/L, and neutral pH, the UV/H2O2 treatment was able to remove 90% of the EE2 content within 30 min. Four anions commonly present in water were found to inhibit EE2 degradation to varying degrees:  >  > Cl? >  . Our results demonstrate that the described UV/H2O2 process is an effective method to control EE2 pollution in water. |
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| Keywords: | Drinking water Endocrine disruptor Estrogens Ozonation Pollution |
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