ATO-Nd-DSA电极电催化氧化吡啶研究  

Study on Electro-catalytic Oxidation of Pyridine with ATO-Nd-DSA Electrodes

作　　者：张晓璐 胡金香 张欣蕾 陈向娟 郭爱红 ZHANG Xiao-lu;HU Jin-xiang;ZHANG Xin-lei;CHEN Xiang-juan;GUO Ai-hong(North China University of Science and Technology,Hebei Tangshan 063210,China)

机构地区：[1]华北理工大学化学工程学院,河北唐山063210

出　　处：《广州化工》2020年第9期53-56,100,共5页GuangZhou Chemical Industry

基　　金：河北省自然基金-钢铁联合基金(B2014209314)。

摘　　要：以吡啶模拟废水为目标污染物,研究了ATO-Nd-DSA电极降解吡啶的最佳工艺条件和氧化行为。结果表明:初始pH为14,电极间距2.0 cm,电解质Na2SO4浓度为0.25 mol/L,电流密度为30 mA/cm^2,初始质量浓度为1000 mg/L,降解120 min后,去除率可达到56.8%;吡啶降解体系的电流效率可达20.65%;吡啶在Nd-ATO-DSA电极表面的降解过程基本遵循动力学一级方程;Nd-ATO-DSA电极上的电化学氧化是一个表面控制下的不可逆电极反应过程。The optimum process conditions and oxidation behaviors of degradation of pyridine by ATO-Nd-DSA electrode were studied with pyridine as a target pollutant.The results showed that the removal rate of pyridine reached 56.8%at the initial pH of 14,the electrode spacing of 2.0 cm,the electrolyte Na2SO4 concentration of 0.25 mol/L,the current density of 30 mA/cm^2 and the initial mass concentration of 1000 mg/L after 120 min.The current efficiency of pyridine degradation system was 20.65%.The degradation process of pyridine on the surface of Nd-ATO-DSA electrode nearly followed the first order equation of kinetics.Electrochemical oxidation of pyridine on the Nd-ATO-DSA electrode was an irreversible electrode reaction under controlling of surface reaction.

关 键 词：ATO ND DSA电极 吡啶 

分 类 号：X506[环境科学与工程—环境工程]