TiO_2/矿物复合光催化剂降解工业废水中偶氮染料的应用研究  

APPLICATION RESEARCH ON DEGRADATION OF AZO DYE BY TIO_2/MINERAL COMPOSITE PHOTOCATALYST

作　　者：雷绍民[1] 曲艺[1] 白春华[1] 

机构地区：[1]武汉理工大学资源与环境工程学院,武汉430070

出　　处：《中国矿业》2006年第6期54-57,共4页China Mining Magazine

摘　　要：采用高岭石基纳米TiO2光催化剂,降解工业废水中的偶氮染料。研究废水初始浓度、催化剂投加量、废水初始pH值以及氧化助剂H2O2投加量,对降解脱色率的影响。结果表明,偶氮废水初始浓度为40mg/L,催化剂投加量取1g/50ml废水,废水初始pH值为4,偶氮废水降解4h后,脱色率达到99.2%。添加适量氧化助剂可加快反应速度。该研究表明,TiO2/矿物复合光催化剂,对偶氮染料具有极好的降解效果。The photoeatalytic degradation of azo dye with doped nanometer TiO2/Kaolinite was investigated. The effects of azo dye initial concentration, dosage of catalyst, solution pH and H2O2 quantity were discussed. The results showed that when initial concentration of azo dye was 40mg/L, dosage of catalyst 1 g/50ml, solution pH 4, after 4h the decolorization ration could get to 99.2%. Addition of oxidant could accelerate the reaction rate. The research revealed that TiO2/mineral composite photocatalyst had great effect on degradation for azo dye.

关 键 词：光催化剂 降解 偶氮废水 

分 类 号：TQ032.4[化学工程]