摘要
建立了微波无极紫外光催化氧化/内电解协同处理印染废水的新工艺。采用微波无极紫外光,以活性炭为光催化剂TiO2的载体,与外加铁屑构成内电解反应,处理分散蓝E-4R模拟废水。研究结果表明:协同工艺中主要是通过内电解过程产生的Fe3+捕获光电子来提高光催化作用的效率,而通过Fe2+催化H2O2形成光Fenton反应生成.OH的效应则较小。在曝气量为0.5 L/min、pH为5、铁屑投加量为40 g、染料初始浓度为50 mg/L时,分散蓝E-4R的脱色率和COD去除率分别达到99.56%、68.45%。
A bench-scale experiment was conducted to investigate dyestuff degradation under the synergetic action of microwave-ultraviolet photo-catalysis and internal electrolysis,in which simulated wastewater containing Disperse Blue E-4R was treated using an experimental apparatus with microwave electrode-less UV as a light source,activated carbon as a photo-catalyst（TiO2） carrier and activated carbon/ iron chips as the micro-electrodes.Results showed the increased efficiency of photo-catalysis mainly attributed to the synergetic processes in which Fe3＋ produced could capture electrons rather than the contribution of photo-Fenton reaction,and in conclusion,the optimum condition for the synergetic action that resulted in removals of 99.56% and 68.45% for colority and COD respectively.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2012年第5期152-155,共4页
Environmental Science & Technology
关键词
分散蓝E-4R
微波无极紫外光催化
内电解
协同效果
Disperse Blue E-4R
microwave electrode-less UV photo-catalysis
internal electrolysis
synergetic effect
