膜科学与技术

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Application of AFM in analysis of PVDF/SiO2 blend ultrafiltration membrane anti-fouling performance

Authors： FU Xiaokang 1，*, WANG Lei 1, HUANG Danxi 1, WANG Xudong 1, MENG Xiaorong 2, LV Yongtao 1, ZHANG Kai 1

Units： 1 School of Environmental & Municipal Engineering, Xi’an University of Architecture and Technology, Yan Ta Road. No.13, Xi’an 710055, China. 2 School of science, Xi’an University of Architecture and Technology, Yan Ta Road. No.13, Xi’an 710055, China.

KeyWords： Atomic Force Microscope；ultrafiltration membrane；Poly (vinylidene fluoride)；effluent organic matter； force curve； hydrophilic modification

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2015,35(5):71-78

Abstract：

A major factor limiting the use of Poly (vinylidene fluoride) (PVDF) ultrafiltration (UF) membrane of wastewater treatment is membrane fouling by Effluent Organic Matter (EfOM). An understanding of the fouling behavior of EfOM is needed to provide a basis for modification of PVDF UF membrane. In this work, PVDF membranes with adding different amount of SiO2 were modified via non-solvent phase induce separation method. The paper investigated the fouling behavior of the prepared membranes with adding different amount of SiO2 in secondary effluent organic matter, and the interaction between colloidal pollutants and membrane and pollutants’ were analyzed with self-made atomic force probe. This paper shows that the further analysis of the EfOM-membrane force curve can provide useful means of evaluating the anti-fouling ability of the modified membrane.

Funds：

国家自然科学基金项目（51178378，51278408）；陕西省科技统筹创新工程计划项目（2012KTCL03-06，2013KTCL03-16）

AuthorIntro：

第一作者简介：付小康(1991-)，男，西安建筑科技大学，西安，硕士生，主要从事超滤膜水处理技术研究， E-mail：2672688431@qq.com；通信作者：王磊：E-mail：wl0178@126.com

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