多孔吸附光催化复合材料在含汞废水治理中的应用研究  

Study on mercury-containing wastewater treatment by using the porous absorbing photocatalyst

作　　者：胡龙志 江晖[1] 曾庆文[1] 罗正维[1] 耿文华[1] 韦萍[1] 

机构地区：[1]南京工业大学生物与制药工程学院,南京211816

出　　处：《化工新型材料》2015年第10期209-211,共3页New Chemical Materials

基　　金：江苏省自然科学基金(BK2011808);江苏省高校自然科学研究项目(10KJB61005);教育部留学回国人员科研启动基金([2011]1568);南京工业大学青年教师学术基金(39707003)

摘　　要：以凹凸棒土和活性污泥为材料制备多孔载体,采用溶胶-凝胶法制备光催化剂TiO2和多孔吸附光催化复合材料。通过单因素实验,探究降解汞离子(Hg2+)的最优条件,研究TiO2光催化剂降解汞污染物的机制。结果表明:多孔吸附光催化复合材料质量浓度为20g/L,当pH=7.0时,在紫外光源照射10min,Hg2+的还原率达最大,Hg2+的去除率可达71.58%。最后,考察了利用多孔吸附光催化复合材料处理含甲基汞(CH3-Hg+)废水的可行性。The porous carrier was achieved by using attapulgite and activated sludge as material.The sol-gel method was applied to prepare the porous absorbing photocatalyst.The optimal experiment condition of degradation of mercury ion（Hg2＋）was investigated by single-factor experiments.The results showed that the best removal efficiency of Hg2＋was about 71.58% under UV irradiation for 10 minutes at pH=7.0,the concentration of photocatalyst was 20g/L.Finally,the photocatalyst was used to process simulation wastewater containing Methylmercury（CH3-Hg＋）,and the mechanism of the degradation of mercury-containing wastewater by the photocatalyst was also proposed.

关 键 词：溶胶-凝胶法 含汞废水 光催化反应 多孔吸附光催化复合材料 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学]