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.
出处
《化工新型材料》
CAS
CSCD
北大核心
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)
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
sol-gel method
mercury-containing wastewater
photocatalytic reaction
porous absorbing photocatalyst