摘要
利用Al_(2)O_(3)颗粒负载金属制得Fe-Al_(2)O_(3)、Cu-Al_(2)O_(3)、Fe/Cu-Al_(2)O_(3)、La/Fe/Cu-Al_(2)O_(3)粒子电极,通过构建的三维电极电化学体系处理2,6-二甲基吡啶(LUT)废水。考察了反应条件和粒子电极负载不同金属及负载金属质量比对LUT去除效果的影响。结果表明,去除LUT的最佳反应条件为:电流密度为24 mA/cm^(2)、粒子电极质量为11 g、电解质质量为1.3 g、pH=7;各因素对去除LUT效果的影响大小依次为:电解质投加质量>电流密度>粒子电极投加质量>pH。上述条件下Fe-Al_(2)O_(3)和Cu-Al_(2)O_(3)作粒子电极时的LUT去除率分别为96.0%和97.0%;m(Fe)∶m(Cu)=1∶4制成Fe/Cu-Al_(2)O_(3)电极时LUT去除率可达98.5%;m(La)∶m(Fe/Cu)(1∶4)=1∶10制成La/Fe/Cu-Al_(2)O_(3)电极时LUT去除率可达99.2%。
Fe-Al_(2)O_(3),Cu-Al_(2)O_(3),Fe/Cu-Al_(2)O_(3),La/Fe/Cu-Al_(2)O_(3)particle electrodes are prepared through loading metals on Al_(2)O_(3)particles,and used to construct three-dimensional electrode electrochemical systems to treat with 2,6-dimethylpyridine-containing wastewater.Influences of reaction conditions,different loading metals and the loading ratio of metals on the removal effect of dimethylpyridine by the system are investigated.It is shown that the optimal reaction conditions for removing dimethylpyridine are as follows:the current density is 24 mA·cm^(-2),the dosage of particle electrode is 11 g,the dosage of electrolyte is 1.3 g,and pH=7.Electrolyte dosage has the greatest influence,followed by current density,particle electrode dosage,pH.Under these conditions,the removal rates of dimethylpyridine by Fe-Al_(2)O_(3)and Cu-Al_(2)O_(3)as particle electrodes are 96.0%and 97.0%,respectively.Fe/Cu-Al_(2)O_(3)electrode made in a Fe∶Cu ratio of 1∶4 can deliver a dimethylpyridine removal rate of 98.5%.The removal rate can reach 99.2%over La/Fe/Cu-Al_(2)O_(3)electrode made under La∶Fe/Cu(1∶4)=1∶10.
作者
俞佳成
王琴
秦文彬
张宇峰
YU Jia-cheng;WANG Qin;QIN Wen-bin;ZHANG Yu-feng(School of Environmental Science and Engineering,Nanjing Tech University,Nanjing 211800,China)
出处
《现代化工》
CAS
CSCD
北大核心
2024年第8期180-184,共5页
Modern Chemical Industry
关键词
氧化铝粒子电极
电化学
三维电极
2
6-二甲基吡啶
废水降解
alumina particle electrode
electrochemistry
three dimensional electrode
2,6-dimethylpyridine
waste water degradation
