摘要
以钛片为基底,Sn O2+Sb2O5为中间层,自制氧化铅电极用于苯酚的电化学降解。试验结果表明,自制电极具有良好的苯酚去除效果:在室温为15℃,电极间距为15 mm,电流密度为16 m A/cm2,苯酚溶液p H为6.3,导电介质Na2SO4浓度为0.25 mol/L时,电解300 m L初始质量浓度为100 mg/L的苯酚,4 h后去除率可达91.89%。研究降解过程中苯酚初始浓度、p H、导电介质、电流密度、电极间距等因素对苯酚降解过程的影响。在此基础上对苯酚降解影响较大的初始浓度、p H、电流密度3个因素优化,通过响应曲面分析交互影响和单因素影响,结果表明,三者交互影响不大,苯酚初始浓度影响最大,p H影响最小,与单因素影响分析结果吻合。
Using titanium plate as substrate,and SnO2＋Sb2O5as an intermediary,the lead oxide electrode for electrochemical degradation of phenol is made. The experimental results show that the homemade electrode has very good phenol removing effect. When the room temperature is 15 ℃,electrode spacing 15 mm,current density 16 m A/cm2,p H 6.3,and conductive medium Na2SO4 concentration 0.25 mol/L,300 m L of phenol,whose initial mass concentration is 100 mg/L,is electrolyzed for 4 h,the removing rate can reach 91.89%. The influences of the factors,such as initial concentration of phenol,p H,conductive medium,current density,electrode spacing,etc. on the phenol degradation process are studied. On the basis of these results,the three factors that have more influences on phenol degradation,including initial concentration,p H and current density,are optimized,by response surface method,interactive influence and single-factor influence. The results show that the interactive influences of the three are not obvious. The initial concentration of phenol has the largest influence,and p H has the least influence. It is in line with the analytical result of single factor influence.
出处
《工业水处理》
CAS
CSCD
北大核心
2016年第5期55-59,共5页
Industrial Water Treatment
关键词
自制氧化铅电极
苯酚
电化学降解
响应曲面法
homemade lead oxide electrode
phenol
electrochemical degradation
response surface method
