Mn-Sn-Ce/活性炭电极电解4-氯酚工艺优化研究  

Study on Process Optimization of 4-Chlorophenol Electrolysis with Mn-Sn-Ce/Activated Carbon Electrode

作　　者：覃琴 陈熠嘉 谢树明 李媚 QIN Qin;CHEN Yijia;XIE Shuming;LI Mei(School of Chemistry and Chemical Engineering,Guangxi University for Nationalities,Guangxi Key Laboratory of Polysaccharide Materials and Modifications,Key Laboratory of Chemical and Biological Transforming Process of Guangxi Higher Education Institutes,Nanning 530008,China)

机构地区：[1]广西民族大学化学化工学院,广西多糖材料与改性重点实验室,广西高校化学与生物转化过程新技术重点实验室,南宁530008

出　　处：《水处理技术》2020年第11期77-84,共8页Technology of Water Treatment

基　　金：广西生物多糖分离纯化及改性研究平台建设项目(桂科ZY18076005);国家自然科学基金(21466009);广西民族大学2018年度校级科研项目(2018MDYB007);广西民族大学2018年实验室技术创新与实验室管理研究项目(民大[2018]307)。

摘　　要：采用自制Mn-Sn-Ce/GAC作为粒子电极构建三维电化学反应器,以4-氯酚去除率和能耗为考察目标,采用单因素实验考察电解质含量、阴阳极板距离、电流大小、粒子电极加入量、初始4-氯酚含量对模拟废水中4-氯酚去除效果的影响。单因素结果表明,电解质含量、阴阳极板距离、电流大小、粒子电极加入量为较显著影响因素。进一步采用响应曲面分析结果表明,电流和粒子电极投加量对4-氯酚降解效果影响较大,优化电解条件为,硫酸钠的浓度50mmol/L、阴阳极板间距2 cm、电流1.3 A、粒子电极加入质量17.3 g。电解时间为10 min时4-氯酚去除率达到了96.11%。A three-dimensional electrochemical reactor was constructed by using self-made Mn-Sn-Ce/GAC as particle electrodes.The removal rate of4-chlorophenol and energy consumption as the investigation target,and the effects of electrolyte content,distance between anode and cathode plate,current size,particle electrode addition and initial content of 4-chlorophenol on the removal efficiency of 4-chlorophenol in simulated wastewater were investigated by single factor experiments.The single experiment results showed that,the electrolyte content,distance between anode and cathode plate,current and particle electrode addition were significant factors.Further use of response surface analysis results indicated that,current and particle electrode dosage had great influence on the degradation of 4-chlorophenol.The optimum electrolysis conditions were as follows,concentration of sodium sulfate was 50 mmol/L,distance between anode and cathode was 2 cm,current was 1.3 A and particle electrode dosage was 17.3 g.The removal rate of 4-chlorophenol reached 96.11%when the electrolysis time was 10 min.

关 键 词：响应面法 粒子电极 4-氯酚 电化学降解 

分 类 号：X592[环境科学与工程—环境工程]