SnO2-TiO2/UV/O3催化降解糖蜜酒精废水  

SnO_2-TiO_2/UV/O_3 catalytic degradation of molasses fermentation wastewater

作　　者：曾玉凤[1] 刘自力[1] 秦祖赠[1] 

机构地区：[1]广西大学化学化工学院

出　　处：《工业水处理》2008年第6期16-20,共5页Industrial Water Treatment

基　　金：国家自然科学基金资助课题(20466001);广西大学重点科技项目(2004ZD01);广州市教育局科研项目(62040)

摘　　要：用沉积—沉淀法制备了SnO2-TiO2光催化剂,利用XRD、UV-Vis等技术对其结构进行了表征。以糖蜜酒精废水为处理对象,采用自制的SnO2-TiO2作为光催化剂,研究了在紫外光条件下,稀释比、催化剂投加量、臭氧投加量和pH等因素对光催化臭氧降解反应的影响。结果表明:在紫外光照射、催化剂用量0.25g/L、通气流量30L/h的条件下,稀释20倍的糖蜜酒精废水经120min的处理,其脱色率达到98.57%;此外,还对催化降解糖蜜酒精废水的机理进行了探讨。SnO2-TiO2 photocatalyst has been prepared by deposition-precipitation method. The structure of is characterized by XRD, UV-Vis. The decolorization-degradation of molasses fermentation wastewater is catalysts regarded as a model reaction to study the effects of dilution ration, addition amounts of SnO2-TiO2,03 flow and pH on photocatalytic ozonation decolorization reaction under UV. The results show that： under UV irradiation, the additive amount of SnO2-TiO2 of 0.25 g/L,O3 flow of 30 L/h and a 20 times of dilution of molasses alcohol wastewater treated 120 min, the decolorization rate is 98.57%. In addition, the mechanism of catalytic degradation of molasses fermentation wastewater is discussed.

关 键 词：SnO2-TiO2 O3 光催化 糖蜜酒精废水 

分 类 号：TQ032.41[化学工程] X703.1[环境科学与工程—环境工程]