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-TiO_2/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-TiO_2/PCFM对HA的降解率可达到86.82%。Sr-TiO_2/PCFM重复利用3次后,对HA的降解率仍可维持在40%以上。
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.
作者
韩帆
张义
Trinh Xuantung
刘子森
徐栋
贺锋
吴振斌
Han Fan;Zhang Yi;Trinh Xuantung;Liu Zisen;Xu Dong;He Feng;Wu Zhenbin(School of Resource & Environmental Engineering,Wuhan University of Technology,Wuhan 430070;State Key Laboratory of Freshwater Ecology and Biotechnology,Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072;University of Chinese Academy of Sciences,Beijing 100049)
出处
《化工新型材料》
CAS
CSCD
北大核心
2019年第3期259-263,共5页
New Chemical Materials
基金
国家自然科学基金(51709254)
