Ti/RuO_2网状电极降解对硝基苯甲酸废水的研究  

Preparation of Ti / RuO_2 mesh electrode for degradation of p-nitrobenzoic acid wastewater

作　　者：李联[1] 冯琬茹 何平[1] 张小娟[1] 董发勤[1] 陈阳[1] 李洪 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]国家城市污水处理及资源化工程技术研究中心,四川绵阳621000

出　　处：《现代化工》2016年第3期82-86,共5页Modern Chemical Industry

基　　金：国家科技支撑计划项目(2014BAC13B05);西南科技大学研究生创新基金项目(15ycx021)

摘　　要：采用刷涂法制备了Ti/Ru O_2涂层网状电极,通过X射线衍射和扫描电镜对电极的组分和形貌进行了表征。以Ti/Ru O_2涂层网状电极为阳极,不锈钢网电极为阴极,研究了电解电压、p H、温度和电解时间等因素对对硝基苯甲酸废水电化学催化降解的影响。正交实验结果表明,影响对硝基苯甲酸废水电化学催化降解的顺序依次为p H、温度、电解时间、电解电压。通过单因素实验得到的电化学降解优化条件为:电解电压为2 V,p H为3,温度为30℃,电解时间为180 min。在该条件下,对硝基苯甲酸废水的COD去除率和降解率分别为79.5%、77.2%。Ti / Ru O_2 coating mesh electrode is prepared by brush coating method. The composition and morphological characteristics of as-prepared electrode are investigated by X-ray diffraction and scanning electron microscopy. pNitrobenzoic acid is degraded by using as-prepared electrode as anode and stainless steel mesh electrode as cathode.Various influencing factors,including electrolytic voltage,temperature,p H and electrolytic time,are examined through orthogonal experiment design. The results show that the order of influencing factors on the degradation of p-nitrobenzoic is： p H temperature electrolytic time electrolytic voltage. On the base of single factor experiment,the optimum conditions are as follows： 2 V of electrolysis voltage,3 of p H,30℃ of electrolytic temperature and 180 minutes of electrolysis time. Under such condition,the removal efficiency of COD and degradation rate of p-nitrobenzoic acid can reach 79. 5% and 77. 2%,respectively.

关 键 词：Ti/Ru O_2涂层网状电极 对硝基苯甲酸 电化学降解 正交实验 

分 类 号：X703[环境科学与工程—环境工程]