自然光下溴氨酸光催化降解试验研究  

Experimental Study on Photocatalytic Degradation of Bromanine Acid Under Sunlight

作　　者：吕岩[1] 姜远光[2] 

机构地区：[1]天津城市建设学院土木工程系,天津300384 [2]天津城市建设学院环境与市政工程系,天津300384

出　　处：《天津城市建设学院学报》2010年第3期189-192,共4页Journal of Tianjin Institute of Urban Construction

摘　　要：采用溶胶-凝胶法制备CdS/TiO2复合型光催化剂,并以溴氨酸为降解对象,在太阳光下研究其降解性能,从色度、COD、TOC等不同角度对降解结果进行检测.结果表明:在太阳光下CdS/TiO2能够有效降解溴氨酸废水,CdS/TiO2的最佳比例为0.2∶1;反应中催化剂的最佳用量为2.0 g/L;溴氨酸光催化降解遵循表观一级动力学反应.在对某实际染料废水的降解中,色度和COD的最大去除率分别为94.71%和58.02%.Compound photocatalyst CdS/TiO2 was prepared by sol-gel method and applied to the degradation of bro-manine acid.The degradation experiments were performed under sunlight and the results were evaluated by the pa-rameters of chroma,COD and TOC.The research result indicated that the bromanine acid wastewater could be de-graded effectively by CdS/TiO2 under sunlight.The optimal ratio of CdS/TiO2 was 0.2∶1 under sunlight and the op-timal quantity of photocatalyst was 2.0 g/L.The photodegradation of bromanine acid followed apparent first-order kinetics.In the real degradation of dye waste water,the maximal removal ratio of COD and chroma were 94.71% and 58.02% respectively.

关 键 词：溴氨酸 二氧化钛 硫化镉 光催化 降解动力学 

分 类 号：X703.1[环境科学与工程—环境工程]