【摘要】 以钌铱钛电极为阳极，碳刷为阴极，长波紫外线LED灯为光源构建光电芬顿体系降解四环素.研究了四环素初始浓度、电流密度、pH值和通气条件对四环素降解的影响及不同类型的活性氧簇所发挥的作用.结果表明，·OH是降解四环素的主要活性物种，适宜的pH条件(pH=3)、通气增氧可显著提高四环素的降解率.当电流从60 mA增加至100 mA,四环素的降解率可提高至95.51%,最佳条件下四环素降解率达97.00%,矿化率达57.85%.更多还原

【Abstract】 A photoelectro-Fenton system was constructed for tetracycline degradation with ruthenium iridium titanium electrode as an anode, carbon brush as a cathode, and UVA-LED as the light source.The effects of initial concentration of tetracycline, current intensity, pH value, ventilation condition on the degradation of tetracycline, and the roles of different types of reactive oxygen species(ROS) were studied.The results showed that ·OH was the main active species for tetracycline degradation, and under suitable pH conditions(pH=3),aeration could significantly improve tetracycline degradation efficiency.When the current was increased from 60 mA to 100 mA,the degradation rate of tetracycline was increased to 95.51%.Under the optimal conditions, the degradation ratio of tetracycline reached 97.00% and the mineralization ratio reached 57.85%.更多还原