化工环保2017，Vol.37Issue(6)：673-678,6.DOI:10.3969/j.issn.1006-1878.2017.06.013
PbO2复合电极预处理甲苯二胺废水
Pretreatment of toluene diamine wastewater using PbO2 composite electrode
摘要
Abstract
The β-PbO2/α-PbO2/SnO2-Sb2O3/Ti composite electrode(PbO2 composite electrode)was prepared by coating-thermal deposition and electrochemical deposition and characterized by XRD,SEM,cyclic voltammetry(CV), linear sweep voltammetry(LSV)and accelerated life test. The composite electrode was applied to treat the toluene diamine(TDA)wastewater,and the effects of electrolyte concentration and current density on TDA degradation were investigated. The experimental results showed that:The multilayer-structure PbO2 with shuttle-shaped α-PbO2 and cauliflower-shaped β-PbO2 was conducive to improve the stability and activity of composite electrode;The oxygen evolution potential of the composite PbO2 electrode(1.9 V)was obviously higher than that of TDA(1.28 V),and its service life was up to 486 d;The TDA wastewater with 4791.74 mg/L of COD and 486.4 mg/L of TDA mass concentration was treated by electrocatalytic technology,under the conditions of current density 60 mA/cm2,Na2SO4 mass concentration 10 g/L and reaction time 240 min,the removal rate of TDA and COD was 97.3％ and 88.1％,respectively.关键词
电催化氧化/α-PbO2/β-PbO2/复合电极/甲苯二胺Key words
electro-catalytic oxidation/α-PbO2/β-PbO2/composite electrode/toluene diamine分类
资源环境引用本文复制引用
冯建俊,黎学明,苏德水,邵方..PbO2复合电极预处理甲苯二胺废水[J].化工环保,2017,37(6):673-678,6.基金项目
重庆市科技计划项目集成示范计划121科技支撑示范工程(cstc2014zktjccxBX0091). （cstc2014zktjccxBX0091）
