Preparation of PVDF Membrane Material Probe and its Application in Membrane Fouling
In order to further resolve the fouling mechanism of PVDF membrane from microcosmic view,PVDF membrane material probe was made by sintering the PVDF microspheres onto the free end of a cantilever with the aid of self-assemble devices.And the foulant-coated colloidal probes were prepared by adsorbing foulants onto the surface of the PVDF microsphere which had been sintered onto the cantilever.The intermolecular adhesion force between membrane and foulant and between foulant and foulant were investigated by atomic force microscope (AFM) in conjunction with PVDF membrane material probe and foulant-coated probe,respectively.And the membrane fouling experiment were also carried out to confirm the availability of probes which made by above method.The results show that the interaction forces of PVDF-membrane and foulant-foulant which were measured by PVDF probe and foulant-coated probe is a effective way to predict the fouling potential of PVDF membrane.There is a positive correlation between the intermolecular adhesion forces of foulant-membrane and the flux decline rate and extent in the initial filtration stage.Moreover,the foulant-membrane interaction forces could provide theoretical basis for membrane material s choice.
Atomic force microscope (AFM) PVDF membrane material probe foulant-coated probe interaction adhesive force membrane fouling
Miao rui Wang Lei Feng Ling Liu Ziwen Huang Danxi
School of Environmental & Municipal Engineering, Xian University of Architecture and Technology, Xian 710055, China
国际会议
2013青岛国际脱盐大会(Qingdao International Conference 2013 on Desalination and Water Reuse)
青岛
英文
48-54
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）