环境工程学报2017，Vol.11Issue(6)：3391-3398,8.DOI:10.12030/j.cjee.201604102
光电-Fenton体系中羟基自由基生成影响因素分析
Analysis of factors influencing hydroxyl radical formation in photoelectro-Fenton system
摘要
Abstract
A new type of photoelectro-fenton (PEF) system with TiO2/Ti as the anode and an activated carbon fiber (ACF) as the cathode was established.The Box-Behnken Design (BBD) response surface methodology (RSM) was used to design the experiments for investigating the individual and interactive effects of initial pH value,application time,current density,and aeration rate on the amount of · OH produced during the PEF reaction process.A quadratic model was developed to correlate the variables to the amount of · OH,and the amount of · OH was optimized to study the optimal operating parameters.The RSM analysis results demonstrated that the magnitude of the effects of individual operation parameters on the amount of · OH were,in descending order,pH ＞ application time ＞ current density ＞ aeration rate.There were some interactions between the 4 factors.The interactions of pH,aeration rate,and application time were particularly significant.The highest maximum amount of · OH was achieved at an initial pH value of 4.49,application time of 130.49 min,and current density of 6.99 mA · cm-2.The experimental values agreed with the predicted values of the model equation with only a 2.35％ deviation.关键词
光电-Fenton/BBD/响应曲面法/羟基自由基/交互作用Key words
photoelectro-fenton/box-behnken design/response surface methodology/hydroxyl radical/interaction分类
资源环境引用本文复制引用
孙梅香,刘会应,刘松,胡耀笛,张利,张业中,戴捷..光电-Fenton体系中羟基自由基生成影响因素分析[J].环境工程学报,2017,11(6):3391-3398,8.基金项目
国家自然科学基金资助项目(21173026) （21173026）
湖北省自然科学基金重点项目(2013CFA107) （2013CFA107）
