二氧化钛光催化降解处理染料废水  

Research on Treating Dye Wastewater by Titanium Dioxide Photocatalytic Degradation Process

作　　者：黄惠莉[1] 黄妙良[1] 蔡阿娜[1] 陈建新[1] 

机构地区：[1]华侨大学材料科学与工程学院,福建泉州362011

出　　处：《化工环保》2002年第2期84-87,共4页Environmental Protection of Chemical Industry

基　　金：福建省自然科学基金项目 (D0 0 10 0 11) ;华侨大学科研基金项目 (H9915 )

摘　　要：研究了TiO2 的添加量、粒径大小、作用时间对 3种染料废水脱色率的影响及TiO2 薄膜对染料废水的处理效果。对于汽巴克染绿和直接大红染料溶液 ,适宜的TiO2 添加量均为 5g/L ,紫外灯照射 6 0min ,其脱色率大于 85 %。对于阳离子红染料溶液 ,适宜的TiO2 添加量为 3g/L ,其脱色率为 83.5 %。粒径小的TiO2 作用效果优于粒径大的效果。在室温和适宜的TiO2添加量的条件下 ,随照射时间的延长 ,太阳光的光催化降解效果渐渐接近于紫外光的光催化降解效果。将TiO2 薄膜固定在陶瓷片上 ,有利于TiO2The influences of TiO 2 dosage,particle size and treatment time on decolorization rates of three type dye wastewaters have been studied. The treatment efficiency of TiO 2 membrane has been also explored. The proper dosage of TiO 2 is 5 g/L for Ciba color and Direct Scarlet wastewaters with the decolorization rates of above 85% under ultraviolet irradiation of 60 min. The proper dosage of TiO 2 is 3 g/L for Cationic Red wastewater with decolorization rate of 83.5%. Under the conditions of ambient temperature and proper TiO 2 dosage,sunlight photocatalytic efficiency is approaching to that of ultraviolet with irradiation time prolongation. Immobilized on ceramic film,TiO 2 can be recycled.

关 键 词：二氧化钛 光催化降解 脱色 染料废水 

分 类 号：X788[环境科学与工程—环境工程]