三维电极─电Fenton耦合法降解硝基苯废水

doi:10.3969/j.issn.1000-565X.2010.08.025

华南理工大学学报（自然科学版） ›› 2010, Vol. 38 ›› Issue (8): 131-136.doi: 10.3969/j.issn.1000-565X.2010.08.025

三维电极─电Fenton耦合法降解硝基苯废水

肖凯军¹ 王新¹ 银玉容²

1.华南理工大学轻工与食品学院, 广东广州 510640；2.华南理工大学环境科学与工程学院, 广东广州 510006

收稿日期:2009-05-14 修回日期:2009-06-30 出版日期:2010-08-25 发布日期:2010-08-25
通信作者: 银玉容（1969-），女，博士生，工程师，主要从事废水的高级氧化和环境生物技术研究．E-mail：ppyryin@scut.edu.cn. E-mail:fekjxiao@yahoo．cn
作者简介:肖凯军（1969-），男，博士，教授，主要从事膜材料的制备及其应用研究．
基金资助:
粤港关键领域重点突破项目（2007Z1-E6011）

Degradation of Nitrobenzene Wastewater by Three-Dimension Electrode Method Coupling Electro-Fenton

Xiao Kai-jun¹ Wang Xin¹ Yin Yu-rong ²

1. School of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, Guangdong, China; 2. School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China

Received:2009-05-14 Revised:2009-06-30 Online:2010-08-25 Published:2010-08-25
Contact: 银玉容（1969-），女，博士生，工程师，主要从事废水的高级氧化和环境生物技术研究．E-mail：ppyryin@scut.edu.cn. E-mail:fekjxiao@yahoo．cn
About author:肖凯军（1969-），男，博士，教授，主要从事膜材料的制备及其应用研究．
Supported by:
粤港关键领域重点突破项目（2007Z1-E6011）

摘要/Abstract

摘要： 采用三维电极-电Fenton耦合法处理硝基苯废水，考察了废水中有机物降解的影响因素及废水处理效果，并与三维电极法、普通电Fenton法去除硝基苯的效果进行了对比．结果表明：随电解时间的延长和初始pH值、极板间距、槽电压、Fe ^2＋投加量、曝气量的增加，硝基苯废水中的化学需氧量（COD）和硝基苯的去除率均呈先增后降或趋于平缓的态势；最佳试验参数为电解时间2．0h、初始pH值为3．0、极板间距6cm、槽电压30V、Fe ^2＋投加量1．0g／L、曝气量0．8m³ ／h；在此条件下，COD及硝基苯的去除率分别为93．1％和96．5％．文中还通过对中间产物进行气相色影质谱联用分析，探讨了硝基苯的降解机理，并进一步证明了三维电极-电Fenton耦合法较三维电极法、普通电Fenton法具有更好的硝基苯类物质去除效果．

关键词: 废水处理, 三维电极, 电Fenton 硝基苯

Abstract:

Nitrobenzene wastewater was treated by a three-dimension electrode method coupling electro-Fenton, and the factors affecting the organic matter degradation as well as the treatment efficiency were investigated. The results were then compared with those of the three-dimension electrode method and the common electrode-Fenton method. It is found that （ 1 ） with the increase in electrolysis time, initial pH value, polar distance, cell voltage, Fe ^{2 ＋} dosage and aeration rate, both the chemical oxygen demand （COD） and the nitrobenzene removal first increase and then decrease or change slightly; （2） the optimal conditions for the wastewater treatment are found to be： an electrolysis duration of 2.0 h, and initial pH value of 3.0, a polar distance of 6 cm, a cell voltage of 30 V, a Fe ^2＋ dosage of 1.0 g/L and an aeration rate of 0. 8 m³ /h ; and （3） in the optimal conditions, the removals of COD and nitrobenzene reach 93.1% and 96. 5%, respectively. In addition, according to the GC-MS results of the intermediate products, the degradation mechanism of nitrobenzene is explored and the superiority of the method over the three-dimension electrode method and the common electrode-Fenton method in terms of nitrobenzene removed is validated.

Key words: wastewater treatment, three-dimension electrode, electro-Fenton, nitrobenzene

肖凯军王新银玉容. 三维电极─电Fenton耦合法降解硝基苯废水[J]. 华南理工大学学报（自然科学版）, 2010, 38(8): 131-136.

Xiao Kai-jun Wang Xin Yin Yu-rong . Degradation of Nitrobenzene Wastewater by Three-Dimension Electrode Method Coupling Electro-Fenton[J]. Journal of South China University of Technology (Natural Science Edition), 2010, 38(8): 131-136.

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三维电极─电Fenton耦合法降解硝基苯废水

Degradation of Nitrobenzene Wastewater by Three-Dimension Electrode Method Coupling Electro-Fenton

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