中华医学超声杂志

应用化学 ›› 2011, Vol. 28 ›› Issue (05): 576-582.DOI: 10.3724/SP.J.1095.2011.00404

• 研究论文 • 上一篇    下一篇

Ru0.7Si0.3O2/Ti电极电催化氧化处理硝基苯废水

卢强1,安立超1*,钟秦1,胡悦1,夏文文2,王志良3   

  1. (1.南京理工大学化工学院 南京 210094；2.江苏省环境监测中心 南京；
    3.江苏省环境科学研究院,江苏省环境工程重点实验室 南京)
  • 收稿日期:2010-07-12 修回日期:2010-09-29 出版日期:2011-05-10 发布日期:2011-05-10
  • 通讯作者: 安立超，教授; Tel/Fax:025-84315532; E-mail:84315532@126.com; 研究方向：水污染控制工程
  • 基金资助:
    江苏省环境工程重点实验室科研开放基金课题（KF2008002）资助项目

Degradation of Nitrobenzene Wastewater by Electrocatalytic Oxidation with Ru0.7Si0.3O2/Ti Electrode

LU Qiang1, AN Lichao1*, ZHONG Qin1, HU Yue1, XIA Wenwen2, WANG Zhiliang3   

  1. (1.School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094;
    2.Jiangsu Environmental Monitoring Center,Nanjing;
    3.Jiangsu Key Laboratory of Environmental Engineering,Jiangsu Environmental Sciences Institute,Nanjing)
  • Received:2010-07-12 Revised:2010-09-29 Published:2011-05-10 Online:2011-05-10
  • Contact: Lu Qiang

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摘要：

制备了Ru0.7Si0.3O2/Ti电极，并以该电极作为氧化阳极，不锈钢为阴极，电催化氧化降解废水中硝基苯。 实验结果表明，当硝基苯初始质量浓度为220 mg/L时，最佳条件为：电流密度25×10-3 A/cm2；Na2SO4作为电解质时加入量为8 g/L；溶液初始pH=2。 在此最佳条件下，硝基苯去除率大于85%，TOC去除率大于50%，表明Ru0.7Si0.3O2/Ti阳极能有效去除废水中有机污染物；对中间产物的检测结果表明，硝基苯的降解是阴阳两极协同作用的结果。

关键词: Ru0.7Si0.3O2/Ti电极, 硝基苯, 电催化氧化, 废水处理

Abstract:

A Ru0.7Si0.3O2/Ti electrode is used as the anode and stainless steel as the cathode, to decompose nitrobenzene in wastewater. The optimal conditions are as follows when the original concentration is 220 mg/L, J(current density)=25×10-3 A/cm2, ρ(Na2SO4)=8 g/L, pH=2. Under the optimal conditions, the removal efficiencies of nitrobenzene and TOC are above 85% and 50%, respectively. The result shows Ru0.7Si0.3O2/Ti anode can effectively remove the organic pollutants in wastewater. The result of the intermediates detection shows that the nitrobenzene degradation is a synergistic process of the anode and the cathode.

Key words: Ru0.7Si0.3O2/Ti Electrode, nitrobenzene, electro-catalytic oxidation, wastewater treatment

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