| UV/H2O2降解水中对乙酰氨基酚的动力学及反应途径 |
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| 引用本文： | 苟玺莹,张盼月,钱锋,王培良,赵春晓,宋永会.UV/H2O2降解水中对乙酰氨基酚的动力学及反应途径[J].环境科学学报,2018,38(6):2123-2130. |
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| 作者姓名： | 苟玺莹 张盼月 钱锋 王培良 赵春晓 宋永会 |
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| 作者单位： | 中国环境科学研究院城市水环境科技创新基地;湖南大学环境科学与工程学院;环境生物与控制教育部重点实验室湖南大学;环境基准与风险评估国家重点实验室中国环境科学研究院 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项（No.2012ZX07202-005） |
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| 摘 要： | 利用UV/H_2O_2间歇式光氧化反应器,考察该工艺降解水溶液中对乙酰氨基酚反应动力学和影响因素.结果表明,UV/H_2O_2可有效降解水溶液中的对乙酰氨基酚,降解过程符合拟一级反应动力学模型(R~2=0.990).通过考察影响反应的因素,如H_2O_2投量、紫外功率、pH值、共存阴离子(HCO_3~-、NO_3~-)浓度,研究结果表明,对乙酰氨基酚的反应速率常数随H_2O_2投量增大而增高,随着UV功率增强而增大;共存阴离子浓度的增加在一定程度上会降低反应速率常数;中性条件是降解体系的最适宜环境,此时的反应速率常数达到最大值.通过气象色谱/质谱(GC/MS)对中间产物的分析推测对乙酰氨基酚降解过程中首先形成了苯酚类物质进而被氧化生成易降解的物质.UV/H_2O_2对对乙酰氨基酚的矿化效果非常显著,在pH 7.0,紫外功率15 W,对乙酰氨基酚浓度42.0 mg·L~(-1),H_2O_2投加量为250.0 mg·L~(-1)时,总有机碳(TOC)去除率达到39%.
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| 关 键 词： | 对乙酰氨基酚 UV/H2O2 降解速率常数 降解产物 |
| 收稿时间： | 2017/4/17 0:00:00 |
| 修稿时间： | 2017/6/29 0:00:00 |
Investigation on the degradation of acetaminophen by UV/H2O2: Degradation kinetics and reaction pathway |
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| GOU Xiying,ZHANG Panyue,QIAN Feng,WANG Peiliang,ZHAO Chunxiao and SONG Yonghui.Investigation on the degradation of acetaminophen by UV/H2O2: Degradation kinetics and reaction pathway[J].Acta Scientiae Circumstantiae,2018,38(6):2123-2130. |
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| Authors: | GOU Xiying ZHANG Panyue QIAN Feng WANG Peiliang ZHAO Chunxiao and SONG Yonghui |
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| Institution: | 1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012;2. College of Environmental Science and Engineering, Hunan University, Changsha 410082;3. Key Laboratory of Environmental Biology and Pollution Control(Hunan University), Ministry of Education, Changsha 410082;4. Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012,1. College of Environmental Science and Engineering, Hunan University, Changsha 410082;2. Key Laboratory of Environmental Biology and Pollution Control(Hunan University), Ministry of Education, Changsha 410082,1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012;2. Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012,1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012;2. Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012,1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012;2. Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012 and 1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012;2. Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012 |
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| Abstract: | |
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| Keywords: | acetaminophen UV/H2O2 degradation rate constant degradation product |
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