亚甲基兰在AC和TiO2／AC上的吸附及催化臭氧氧化  

ADSORPTION OF METHYLENE BLUE ON AC AND TiO_2/AC AND CATALYTIC OZONATION

作　　者：崔龙哲[1] 吴桂萍[1] 张杰[2] 丁泰燮[2] 

机构地区：[1]中南民族大学化学与材料科学学院催化材料科学湖北重点实验室,湖北武汉430074 [2]韩国全北国立大学校环境工学科,全罗北道全州561-756

出　　处：《水处理技术》2008年第2期67-69,共3页Technology of Water Treatment

基　　金：中南民族大学引进人才科研启动基金(yzz05019)

摘　　要：研究了活性炭(AC)和负载二氧化钛的活性炭(TiO2/AC)对亚甲基兰的吸附特性及单独臭氧氧化、AC催化臭氧氧化和TiO2/AC催化臭氧氧化处理水中亚甲基兰的效果。结果表明:AC、TiO2/AC吸附亚甲基兰均较好地符合一级动力学模型及Langmuir方程,AC对亚甲基兰的吸附性能优于TiO2/AC;催化臭氧氧化的脱色速率比单独臭氧氧化略高,且对亚甲基兰吸附性能好的AC作催化剂时脱色效率更高。催化臭氧氧化比单独臭氧氧化对亚甲基兰的矿化率有明显的提高,TiO2/AC的催化活性优于AC。在催化臭氧氧化过程中,伴随着亚甲基兰的分解生成一系列中间产物并逐渐完全氧化。The adsorption of Methylene Blue （MB） on activated carbon （AC） and TiO2-loaded activated carbon （TiO2/AC） was studied. The efficiencies ofozonation and catalytic ozonation with AC and TiO2/AC as catalysts for removal of MB were investigated too. The results indicated that the experimental data of adsorption of MB on AC and TiO2/AC conformed to Pseudo-first class kinetic model and the Langmuir model well. The adsorption capability of AC was better than that of TiO2/AC. The presence of catalysts improved the efficiency of decoloration and mineralization. TiO2/AC was active in degradation MB into CO2 and H2O.The results suggested that a series of intermediate products were produced and then mineralized into CO2 and H2O by the oxidation of MB.

关 键 词：催化臭氧氧化 吸附 TIO2 活性炭 亚甲基兰 

分 类 号：TQ424.1[化学工程]