Engineering a High-Selectivity PVDF Hollow-Fiber Membrane for Cesium Removal

查看全文 作　　者：Shiyuan [1,2]Ding;Lilan [3]Zhang;Yang [4]Li;Li’an [4,5]Hou

机构地区：[1]Institute of Surface-Earth System Science,Tianjin University,Tianjin 300072,China;[2]Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim,Tianjin University,Tianjin 300072,China;[3]State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400044,China;[4]State Key Laboratory of Water Environment Simulation,Beijing Normal University,Beijing 100875,China;[5]Xi’an High-Tech Institute,Xi’an 710025,China

出　　处：《Engineering》索引2019年第5卷第5期,共7页

基　　金：This work was funded by the Major Science and Technology Program for Water Pollution Control and Treatment of China(2015ZX07406006);the National Natural Science Foundation of China(21677015,41603109,and 51238006). 摘　　要：In this study,a copper ferrocyanide/silica/polyvinylidene fluoride(CuFC/SiO2/PVDF)hollow-fiber composite membrane was successfully synthesized through a facile and effective crosslinking strategy.The PVDF hollow-fiber membrane with embedded SiO2 was used to fix the dispersion of CuFC nanoparticles for cesium(Cs)removal.The surface morphology and chemical composition of the composite membrane were analyzed using scanning electron microscopy and X-ray photoelectron spectroscopy(XPS).The composite membrane showed a high Cs rejection rate and membrane flux at the three layers of CuFC and 0.5%SiO2,and its Cs rejection rate was not affected by variation in the pH(pH=4–10).The modified membrane could be effectively regenerated many times using ammonium nitrate(NH4NO3).The Cs selectivity performance was verified by an efficient Cs rejection rate(76.25%and 88.67%in 8 h)in a solution of 100 lg L 1 of Cs with 1 mmol L 1 of competing cations(K+and Na+).The CuFC/SiO2/PVDF hollowfiber composite membrane showed a particularly superior removal performance(greater than 90%)in natural surface water and simulated water with a low Cs concentration.Therefore,the CuFC/SiO2/PVDF hollow-fiber composite membrane can be used directly in engineering applications for the remediation of radioactive Cs-contaminated water. 关键词：CESIUM REMOVAL Composite MEMBRANE Copper FERROCYANIDE Polyvinylidene FLUORIDE

相关文献

参考文献（43）
引证文献（6）
耦合文献（0）

参考文献(43)

引证文献(6)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Engineering a High-Selectivity PVDF Hollow-Fiber Membrane for Cesium Removal

参考文献(43)

引证文献(6)

用户提示