【摘要】 利用太阳光作光源,用含在颗粒活性炭中的TiO2(TiO2／GAC)作光催化剂,在流动循环系统中考察了阿特拉津的光催化降解效果。在阿特拉津初始质量浓度27.18 mg／L、液体循环流量6L／h、液体总体积400 mL、平均辐照度2.64 mW／cm2、液体温度40℃、TiO2／GAC质量浓度7g／L、3％H2O2用量240μL、光催化反应时间1.65 h的条件下,阿特拉津去除率达92.8％,TOC去除率接近70％。通过测定光催化降解过程中TOC的变化、紫外吸收光谱吸收峰的变化和质谱图对阿特拉津的降解途径和降解程度进行了分析。更多还原

【Abstract】 <abstract>otocatalytic degradation of atrazine was investigated in a cycle system using TiO2 charged in granular activated carbon (GAC) as catalyst and sun light as light source. When the initial mass concentration of atrazine is 27.6 mg/L,the cycle rate of solution is 6 L/h,the total volume of atrazine solution is 400 mL,the average intensity of solar irradiation is 2.64 mW/cm2, the solution temperature is 40℃, the dosage of catalyst is 7.0g/L,the dosage of 3%H2O2 is 240μL,and the photocatalytic reaction time is 1. 65 h,the removal rate of atrazine is 98% and that of TOC is about 70% . Based on the variation of TOC and the peak value on UV spectrum and mass spectrum,the degradation route and degree of Atrazine was analyzed.更多还原