有机污染物的脱色率与COD值的关系研究  

Study on the Relationship Between Decolorization Rate and COD Value of Organic Pollutants

作　　者：张金涛[1] 袁凤丹 

机构地区：[1]常州工学院化工系,江苏常州213022

出　　处：《化学与生物工程》2014年第10期58-61,65,共5页Chemistry & Bioengineering

基　　金：常州市应用基础研究计划项目(CJ20120019)

摘　　要：采用阳极氧化法制备了TiO2纳米管阵列电极,采用场发射扫描电子显微镜(FESEM)和X-射线衍射(XRD)对电极的表面形貌和晶型进行了表征,并以其为阳极对模拟染料废水甲基橙(MO)和亚甲基蓝(MB)溶液进行电化学氧化降解。研究了MB溶液的电化学氧化降解反应动力学,考察了MO和MB溶液脱色率与COD值之间的关系。结果表明,MB溶液在TiO2纳米管阵列电极表面发生电化学氧化降解反应动力学为一级反应;MO和MB溶液的脱色率与其COD值之间均呈良好的线性关系,可通过测定溶液脱色率来了解COD值的去除情况。TiO2 Nanotube arrays electrode prepared by anodic oxidation method was acted as anode for elec-trochemical oxidation degradation of methyl orange（MO）and methylene blue（MB）.The morphology and crys-tal structure of TiO2 nanotube arrays film were characterized by field emission scanning electron microscopy （FESEM）and X-ray diffraction（XRD）,respectively.The kinetics of electrochemical oxidation degradation for MB solution was studied.The decolorization rates and chemical oxygen demand（COD）values of both MO and MB were measured in the process of degradation.Results indicated that electrochemical oxidation degradation of MB accorded with the first order reaction kinetics by the action of TiO2 nanotube arrays electrode.The linear relationships of decolorization rates and COD values of both MO and MB were obtained,which meant that the COD removal rate could be determined by the decolorization rates of them.

关 键 词：TIO2 纳米管阵列电极 电化学氧化降解 COD值 脱色率 

分 类 号：X703.1[环境科学与工程—环境工程] X791