光电化学氧化法处理黄连素废水优化与分析  

Optimization and Analysis of Photoelectrochemical Treatment of Berberine Wastewater

作　　者：张东生[1,2] 肖书虎[1] 宋永会[1] 程建光[2] 魏健[1] 胡欣琪[1] 

机构地区：[1]中国环境科学研究院城市水环境科技创新基地,北京100012 [2]山东科技大学化学与环境工程学院,山东青岛266590

出　　处：《环境工程技术学报》2013年第5期378-385,共8页Journal of Environmental Engineering Technology

基　　金：国家自然科学基金项目(21107103;21277134);国家水体污染控制与治理科技重大专项(2012ZX07202-002)

摘　　要：采用光电化学氧化法处理黄连素废水,通过单因素试验和基于中心组合设计的响应曲面法考察了偏压、初始pH、初始Cl-浓度和反应时间及其交互作用对废水TOC去除效果的影响,建立了以TOC去除率为响应值的二次多项式模型。结果表明,影响TOC去除效果的各因素显著性为偏压>初始Cl-浓度>反应时间>初始pH。各影响因素间存在一定的交互作用,其中偏压和初始Cl-浓度的交互作用最为显著。模型预测得到的最佳组合条件,偏压为2.5 V,初始Cl-浓度为98.6 mmol/L,初始pH为3.1,反应时间为3.6 h。最佳组合条件下TOC去除率的模型预测值为89.9%,验证试验结果为88.1%,与预测值基本一致。Photoelectrochemical oxidation was applied to the treatment of berberine wastewater.The single and interactive effects of bias potential,initial pH,initial Cl-concentration and reaction time were investigated according to the single-factor test and the response surface methodology based on central composite design.Furthermore,a second-order polynomial regression equation was developed to describe the TOC removal rate of photoelectrochemical oxidation process and validated by analysis of variance.The results demonstrated that the significance of influence factor followed the order： bias potential initial Cl-concentration reaction time initial pH,and the interactive influence between bias potential and initial Cl-concentration was the most significant.The optimal conditions with the predicted TOC removal of 89.9% were determined as bias potential of 2.5 V,initial Cl-concentration of 98.6 mmol/L,initial pH of 3.1 and reaction time of 3.6 h.Under these conditions,the actual TOC removal rate was 88.1%,which was highly consistent with the predicted result of the model equation.

关 键 词：光电化学氧化 黄连素废水 响应曲面法 优化 

分 类 号：X703.1[环境科学与工程—环境工程]