| 纳米CuO催化臭氧化降解水中痕量对硝基氯苯的研究 |
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| 引用本文： | 翟旭,陈忠林,杨磊,刘婷,刘玥.纳米CuO催化臭氧化降解水中痕量对硝基氯苯的研究[J].黑龙江大学自然科学学报,2009,26(5). |
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| 作者姓名： | 翟旭 陈忠林 杨磊 刘婷 刘玥 |
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| 作者单位： | 哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨,150090 |
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| 基金项目： | 国家自然科学基金重点项目资助(50638020) |
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| 摘 要： | 采用实验室制备的纳米CuO为催化剂,对水中痕量的对硝基氯苯(pCNB)进行催化臭氧氧化去除效能研究。考察了不同工艺条件、催化剂用量、溶液pH值、臭氧进气浓度以及叔丁醇等因素对有机物去除效能的影响。结果表明:在实验条件下,纳米CuO对臭氧氧化去除水中的pCNB具有明显的催化效果,12min内,催化臭氧氧化对pCNB的去除率比单独臭氧氧化提高了28%。随着催化剂用量、pH值(3～11)和臭氧进气浓度的增加,pCNB去除率均增大。自由基抑制剂叔丁醇的加入使pCNB去除率明显降低,证明在纳米CuO催化臭氧化过程中pCNB的降解主要是由于羟基自由基的氧化作用。
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| 关 键 词： | 催化臭氧氧化 纳米CuO 对硝基氯苯 羟基自由基 |
Catalytic ozonation of trace p-chloronitrobenzene in water by nano-CuO catalyst |
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| ZHAI Xu,CHEN Zhong-lin,YANG Lei,LIU Ting,LIU Yue.Catalytic ozonation of trace p-chloronitrobenzene in water by nano-CuO catalyst[J].Journal of Natural Science of Heilongjiang University,2009,26(5). |
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| Authors: | ZHAI Xu CHEN Zhong-lin YANG Lei LIU Ting LIU Yue |
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| Institution: | State Key Laboratory of Urban Water Resource and Environment;Harbin Institute of Technology;Harbin 150090;China |
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| Abstract: | Nano-CuO prepared in the lab was used as catalyst to enhance the ozonation for the removal of trace p-chloronitrobenzene(pCNB)in water.The experiments were carried out to investigate the effects of different process conditions,the amount of catalyst,pH value,ozone gas concentrations and tert-butanol on the degradation efficiency of pCNB.Results showed that under the present experimental conditions,the presence of nano-CuO could improve the ozonation for removal of pCNB,namely the removal efficiency of pCNB ... |
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| Keywords: | catalytic ozonation nano-CuO p-chloronitrobenzene(pCNB) hydroxyl radical |
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