电解法降解有机污染物机理及动力学的研究

Study on Degradation Mechanism and Kinetics of Organic Pollutants by Electrolysis

对阳极电解催化降解有机污染物的机理进行了研究。结果表明 ,在电解过程中能够产生氧化能力极强的羟基自由基 (HO· ) ,使有机污染物以间接氧化的方式降解。用非线性最小二乘法对试验数据的分析表明 ,降解过程基本符合两步一级模型 ,并得到了水杨酸降解过程中的两步速率常数和 2 ,3-二羟基苯甲酸在 5 10

A study on degradation mechanism and kinetics of organic pollutants by electrolysis with Dimensionally Stabilized Anode(DSA)has been carried out.The results show that HO· with very strong oxidizing power can be produced in electrolysis and make organic pollutants degraded in indirect way.Degradation process meets basically reaction model of two steps and first grade according to the analysis of experimental data with on line least square method.The degradation rate constant of hydroxybenzoic acid and mole adsorptivity of 2,4 dihydroxybenzoic acid at 5.10 nm are obtained.