响应曲面法优化感应电芬顿处理活性红X-3B废水  

Optimization of Induction Electro-Fenton for Treating Reactive Red X-3B Wastewater by Response Surface Method

作　　者：彭媛 赵朋飞 PENG Yuan;ZHAO Peng-fei(Wuhan Huazi Tonghui Technology Co.,Ltd.,Wuhan Hubei 430074,China)

机构地区：[1]武汉华咨同惠科技有限公司,湖北武汉430074

出　　处：《当代化工》2022年第5期1014-1019,共6页Contemporary Chemical Industry

基　　金：国家自然科学基金,稀土对作物线粒体的作用机理研究(项目编号:2117326);湖北省自然科学基金重点项目,生物膜同步硝化反硝化及溶解性有机物去除的实时协同控制研究(项目编号:2013CFA107);荆州市科技项目,黑臭水体污染现状分析及处理装置研制(项目编号:2019EC61-14)。

摘　　要：以石墨板为阳极、海绵状多孔金属泡沫镍(NF)为阴极、Fe板为感应电极,构建在线产生两种芬顿试剂(Fe^(2+)/H_(2)O_(2))的感应电芬顿体系,并采用响应曲面法考察其处理偶氮染料活性红X-3B的脱色能力。电催化产H_(2)O_(2)实验、产Fe^(2+)实验、产·OH实验以及羟基自由基清除实验结果表明,本实验成功构建了在线产生两种芬顿试剂(Fe^(2+)/H_(2)O_(2))的感应电芬顿体系,并且活性红X-3B主要通过感应电芬顿体系中的所生成的·OH进行降解。感应电芬顿各因素显著性由大到小顺序为:反应时间、初始pH、电流密度、曝气速率。数学模型回归性较好;在初始pH=3.30、反应时间为124.50min、电流密度为31.5mA·cm^(-2)、曝气速率为2.15L·min^(-1)时,模型预测的脱色率为99.37%,与实际值仅相差0.92%。Using graphite plate as anode, sponge-like porous metal foam nickel(NF) as cathode, Fe plate as sensing electrode, an induction electric Fenton system that can generate two Fenton reagents(Fe^(2+)/H_(2)O_(2)) onlinewas constructed, and the response surface method was used to investigate its ability to deal with the decolorization of azo dye reactive red X-3B. The results of the electrocatalytic H_(2)O_(2)production experiment, Fe^(2+)production experiment, ·OH production experiment and hydroxyl radical scavenging experiment showed that this experiment successfully constructed an induction electro-Fenton system that produced two Fenton reagents(Fe^(2+)/H_(2)O_(2)) online, and reactive red X-3B was mainly degraded by the generated ·OH in the induction electric Fenton system. The order of significance of the various factors of induced electric Fenton was as follows: reaction time>initial p H>current density>aeration rate, the mathematical model had good regression^(-1) at the initial pH=3.30, When the reaction time was 124.50 min, and the current density was 31.5 m A·cm^(-2), the aeration rate was 2.15 L·min^(-1), the decolorization rate predicted by the model was 99.37%, which was only 0.92% different from the actual value.

关 键 词：感应电芬顿 响应曲面法 偶氮染料 脱色 

分 类 号：TQ085.4[化学工程]