| 电化学深度氧化法处理硝基苯废水 |
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| 引用本文： | 康艳红,;薛向欣,;杨合,;孙凌云. 电化学深度氧化法处理硝基苯废水[J]. 沈阳黄金学院学报, 2009, 0(2): 156-160 |
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| 作者姓名： | 康艳红, 薛向欣, 杨合, 孙凌云 |
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| 作者单位： | [1]东北大学硼资源生态化综合利用技术与硼材料辽宁省重点实验室,沈阳110004; [2]沈阳师范大学化学与生命科学学院,沈阳110034 |
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| 基金项目： | 教育部重大科技资助项目（307009）;973计划资助项目（2007CB613504） |
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| 摘 要： | 利用钛基DSA类金属氧化物电极对含硝基苯类废水进行了电化学深度氧化处理,并用高效液相色谱分别对阴、阳极产物进行了分析.结果表明,硝基苯最终被深度氧化为CO2,H2O,有中间产物——对硝基酚出现,无其他新物质生成.电解过程中阳极酸性持续增强,阴极显碱性,阳极降解效率高于阴极.根据实验结果推测出硝基苯去除机理为：在自由基作用下,按硝基苯→硝基酚类→苯酚类→二氧化碳、水的途径降解.
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| 关 键 词： | 电化学 硝基苯 降解 深度氧化法 |
Treatment of nitrobenzene wastewater by electrochemical advanced oxidization |
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| Affiliation: | KANG Yan-hong, XUE Xiang-xin , YANG He , SUN Ling-yun (1. Liaoning Province key Laboratory for Ecologically Comprehensive Utilization of Boron Resources ＆ Materials, Northeastern University Shenyang 110004, China; 2. College of Chemistry and Life Science, Shenyang Normal University., Shenyang 110034, China) |
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| Abstract: | The removal efficiency of nitrobenzene was investigated by electrochemical advanced oxidization using Ti - based dimensionally stable anode （DSA） as electro -catalytic electrode, and the products in anode and cathode were also analyzed by HPLC. The results indicated that nitrobenzene was ultimatdy oxidized into CO2 and H2O. The intermediate product of p - nitrophenol was observed and no other by - products appeared during the process of electrolysis. The acidity increased continuously in the area of anode and the increase of alkalinity was also detected in the area of cathode during the electrolysis. The removal efficiency in the area of anode was higher than that in the area of cathode. The removal mechanism of nitrobenzene was postulated that nitrobenzene degradation followed the steps as nitrobenzene→p -nitrophenol-m.phenol→CO2 and H20 due to the action of free radical. |
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| Keywords: | electrochemistry nitrobenzene degradation advanced oxidative processes |
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