石油学报(石油加工)

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基于三维电极体系的难生物降解有机物电催化氧化动力学

乔启成1,2, 王立章1, 赵跃民3, 顾卫兵2, 杨春和2   

  1. 1. 中国矿业大学 环境与测绘学院, 江苏 徐州 221008;

    2. 南通农业职业技术学院 环境与资源系, 江苏 南通 226007;

    3. 中国矿业大学 化工学院, 江苏 徐州 221008

  • 收稿日期:2008-06-18 修回日期:2009-02-03 出版日期:2009-10-25 发布日期:2009-10-25
  • 通讯作者: 乔启成

KINETICS FOR ELECTRO-CATALYTIC OXIDATION OF BIO-REFRACTORY ORGANIC COMPOUNDS BY THREE-DIMENSION ELECTRODE SYSTEM

Qiao Qi-cheng, Wang Li-zhang, Zhao Yue-min, Gu Wei-bing, Yang Chun-he

  

  1. 1. College of Environment and Spatial informatics, China University of Mining and Technology, Xuzhou 221008, China;

    2. Department of Environment and Resource, Nantong Agricultural Vocational Tecnology College, Nantong 226007, China;

    3. School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221008, China

  • Received:2008-06-18 Revised:2009-02-03 Online:2009-10-25 Published:2009-10-25
  • Contact: Qiao Qi-cheng

摘要: 采用三维电极电催化反应器考察了反应电压、TiO2催化剂和NaCl添加量、曝气/水体积比和温度等因素对于癸二酸生产废水电催化氧化反应速率常数的影响。结果表明,反应时间相同时,可通过增大反应电压、增加TiO2催化剂和NaCl添加量、增大曝气量、提高反应温度等手段获得较大的反应速率。根据现有相关理论和实验数据,提出了对反应器出水COD的经验预测模型,并通过实验得出了模型中的各个参数。模型的提出能够指导实际反应器的准确设计并为工业应用提供依据。

关键词: 三维电极, 动力学模型, 电催化氧化, 癸二酸生产废水

Abstract: A three-dimension electrode system(TDEs) was used in the electro-catalytic oxidation for the treatment of wastewater from sebacic acid production. The influences of some key factors, including voltage, the dosages of TiO2 catalyst and NaCl, aeration quantity and temperature, on the reaction rate constant of electro-catalytic oxidation for organic pollutants in the wastewater from sebacic acid production were investigated. The experimental results showed that the larger reaction rate constant could be obtained by increasing the reaction voltage, adding more TiO2 catalyst and NaCl, increasing aeration quantity or raising reaction temperature under the certain reaction time. Based on current theories, a kinetics model for predicting the output COD value of electro-catalytic oxidation reaction of the wastewater from sebacic acid production was deduced, and some constants of the model were obtained through plentiful experimental results of this reaction process. The study illustrated that a good agreement was obtained between the predicted value by the model and the experimental data, so the model is useful for the accurate design of this technological process, and can be the theoretical basis of its industrial applications.

Key words: Three-dimensional electrodes, kinetics model, electro-catalytic, sebacic acid wastewater

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