阳极氧化与Fenton法结合的可行性

Feasibility of combining of anodic oxidation and Fenton technique

在Ti/Sn、Sb氧化物作阳极的反应体系中,以甲基橙和刚果红为模拟污染物,用紫外光谱和TOC测试揭示了其降解历程.Ti/Sn、Sb氧化物电极具有良好的电催化活性,Na2SO4为电解质,电压为15V,电解24min时,0.01mmol/L的甲基橙和刚果红色度去除率达100%,色度去除能以一级反应动力学方程表征;电解5h后,TOC去除率分别为80.5%和78.6%.由于阳极电催化体系产生的S2O82-、SO52-对Fenton反应有阻碍作用,所以阳极电Fenton法的运行机制并不完善.

Using methyl-orange or congo-red as simulated pollutant in the reaction system with Ti/ Sn、Sb oxide as anode. Their degradation process is revealed with the technique of UV spectrum and TOC determination test. The Ti/ Sn、Sb oxide electrodes possess good electro-catalytic activity, the colourity removal rate of 0.01mmol/L methyl-orange or congo-red reaches 100% when the Na2SO4 is electrolyte, voltage is 15V and electrolysis time is 24min and the first order reaction dynamic equation can express the colourity removal. After electrolyzed for 5h, the removal rate of TOC (methyl-orange and congo-red) is 80.5% and 78.6%, respectively. The operation mechanism of anode electro-Fenton technique is not perfect, because S2O82- and SO52- produced in anode electro-catalytic system hinder the Fenton reaction.