电化学氧化降解对氯苯酚动力学及其影响因素的研究  

Study on Kinetics and Influencing Factors of Degradation of 2,4-Dichlorophenol by Electrical Chemistry Oxidation

作　　者：李春荣[1] 徐志荣[1] 胡俊生[1] 谢添[1] 李爽 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]北京中天建设集团,北京100000

出　　处：《辽宁化工》2008年第2期92-95,共4页Liaoning Chemical Industry

摘　　要：采用自制电化学反应器对模拟对氯苯酚(4-CP)废水进行了电化学氧化降解的研究,考察了支持电解质的浓度、外加电压、pH值、对氯苯酚初始浓度及NaCl电解质等对4-CP降解的影响,得出了对氯苯酚的电化学氧化降解是符合准一级反应动力学模型,且反应速率常数主要受外加电压的影响,与外加电压的2.6次方成线性关系,当NaC l为电解质时,以间接反应为主,反应速率常数可提高一个数量级。In this paper, using a cylinder electrical chemical reactor, through static experiment, a series of related factor including the concentration of supporting electrolytes, initial p - chlorphenol concentration, pH value, the concentration of supporting electrolytes, etc, was studied. The results showed that the electrical chemical process is better for the degradation and the apparent reaction rate is first - order. And the reaction rate constant has linear relationship with the 2.6th power of applied voltage and negative the 0.24th power of initial concentration of 4 - CP. When using NaCl as supporting electrolytes, the reaction rate constant can be enhanced one order at least.

关 键 词：电化学氧化 对氯苯酚 高级氧化技术反应速率常数 

分 类 号：TQ243.12[化学工程—有机化工]