摘要：针对水环境中啶虫脒难以通过传统工艺去除的问题，采用高级氧化技术紫外激活过氧化氢( UV/H2O2) 去除水中啶虫脒 。比较了 UV/H2O2 系统与UV 系统和H2O2系统对啶虫脒的降解效果，并分别考察了底物浓度、过氧化氢浓度、pH值、阴离子和不同水体对啶虫脒在UV/H2O2系统下降解效果的影响。实验的结果表明: UV/H2O2 会产生羟基自由基，大大提高了水中啶虫脒的降解速率; 啶虫脒降解过程符合准一级动力学模型; 较低的啶虫脒浓度和较高的过氧化氢浓度有利于啶虫脒降解; pH=5时，啶虫脒降解速率较快; 氯离子浓度在5mmol/L时啶虫脒降解速率较快；碳酸氢根离子浓度在5mmol/L时啶虫脒降解速率较快；硝酸根离子浓度在10mmol/L时啶虫脒降解速率较快；在工业废水中啶虫脒降解速率较慢。26639
毕业论文关键词：啶虫脒；紫外；过氧化氢；高级氧化工艺
Study on UV/H2O2 degradation of acetamiprid in water
Abstract： As traditional technologies were ineffective in removal of acetamiprid in water，one of the advanced oxidation processes ( AOPs) ，UV-activated perhydrol ( UV / H2O2) was used for degradation of acetamiprid in water． The efficiencies of UV / H2O2， UV and H2O2 were compared． The effects of initial acetamiprid concentration，H2O2 concentration，p H value , negative ions ,and different waters on UV / H2O2 degradation of acetamiprid were studied． The results revealed that the UV/H2O2 could generates hydroxyl radicals to help decompose acetamiprid in water more quickly． The acetamiprid degradation process was in line with the pseudo-first-order kinetic model． Lower initial acetamiprid concentration and higher H2O2 concentration could enhance the reaction． The degradation of acetamiprid by UV /H2O2 was faster when the pH value was 5．The degradation of acetamiprid by UV / H2O2 was faster when the chloride ions concentration was 5mmol/L.The degradation of acetamiprid by UV / H2O2 was faster when the bicarbonate ions concentration was 5mmol/L.The degradation of acetamiprid by UV / H2O2 was faster when the nitrate ions concentration was 10mmol/L.The degradation of acetamiprid by UV / H2O2 was slower when the industrial waste water was used.
Key words: Acetamiprid；ultraviolet；perhydrol；advanced oxidation processes
目 录
摘要1
关键词1
Abstract1
Key words1
引言1
1 材料与方法2
1.1 材料 2
1.2 方法 2
2 结果与分析2
2.1 UV、H2O2、UV/H2O2降解啶虫脒的比较2
2.2 底物浓度对UV/H2O2光解解啶虫脒的影响3
2.3 过氧化氢浓度对UV/H2O2光解啶虫脒的影响4
2.4 pH对UV/H2O2光解啶虫脒的影响5
2.5 阴离子浓度对UV/H2O2光解啶虫脒的影响6
2.5.1 氯离子浓度对UV/H2O2光解啶虫脒的影响6
2.5.2 碳酸氢根离子浓度对UV/H2O2光解啶虫脒的影响7
2.5.3 硝酸根离子浓度对UV/H2O2光解啶虫脒的影响8
2.6 不同水体对UV/H2O2光解啶虫脒的影响9
3 讨论10
致谢11
参考文献11
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