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Sr-TiO₂/多孔陶瓷滤球复合光催化剂对难降解有机物腐殖酸的去除性能

Removal of refractory organic compound humic acid by Sr-TiO₂/PCFM photocatalyst

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【作者】韩帆；张义； Trinh Xuantung；刘子森；徐栋；贺锋；吴振斌；

【Author】 Han Fan;Zhang Yi;Trinh Xuantung;Liu Zisen;Xu Dong;He Feng;Wu Zhenbin;School of Resource & Environmental Engineering,Wuhan University of Technology;State Key Laboratory of Freshwater Ecology and Biotechnology,Institute of Hydrobiology,Chinese Academy of Sciences;University of Chinese Academy of Sciences;

【通讯作者】张义;

【机构】武汉理工大学资源与环境工程学院；中国科学院水生生物研究所淡水生态和生物技术国家重点实验室；中国科学院大学；

【摘要】腐殖酸（HA）是自然环境中广泛存在的大分子难降解有机物。以多孔陶瓷滤球（PCFM）为载体,通过溶胶-凝胶法掺杂稀土元素Sr制备出复合光催化剂Sr-TiO₂/PCFM,用以降解腐殖酸废水。结果表明:当HA初始浓度为20mg/L,pH=5.98,温度为37℃时,Sr-TiO₂/PCFM对HA的降解率可达到86.82%。Sr-TiO₂/PCFM重复利用3次后,对HA的降解率仍可维持在40%以上。更多还原

【Abstract】 Humic acid（HA）is a kind of refractory organics which widely existed in natural environment.The nano-TiO₂ film coated on porous ceramic filter media（PCFM）was prepared by sol-gel process and formed Sr-TiO₂/PCFM multiplex photocatalyst,the degrade effect of HA with the photocatalyst was studied.The results showed that the degradation rate of HA could reach 86.82% when the initial concentration of HA was 20 mg/L,pH 5.98 and temperature 37℃.The degradation rate of HA was still more than 40% after Sr-TiO₂/PCFM reused for three times.更多还原