E3S Web Conf.
Volume 144, 2020The 2nd International Symposium on Water Resource and Environmental Management (WREM 2019)
|Number of page(s)||8|
|Published online||27 January 2020|
Antifouling Ability of Hydrophilic PVDF-TiO2 membrane Evaluated by Critical Flux and Threshold Flux
Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Harbin Institute of Technology, Shenzhen, Guangdong Province, 518055, China
* Corresponding author: firstname.lastname@example.org
The PVDF flat-membrane was modified by hydrophilic nano-TiO2, which blending by ultrasonication and mechanical stirring pretreatment in phase inversion method. To evaluate the permeate productivity and anti-fouling capacity of protein solution, both the critical flux (JCW) and threshold flux (JTH) of PVDF and PVDF-TiO2 membrane were firstly measured by Advanced Constant Pressure-step Method in cross-flow filtration apparatus. Some evaluation indicators were utilized to analyze the results, such as Flux vs. Time and TMP vs. Time Curves, flux decline rate (dFlux/dt) and TMP-Fluxave curve. Two type fluxes were compared, results exhibited that hydrophilic PVDF-TiO2 modified membrane possessed a higher level of both Jcw and JTH and better anti-protein fouling ability after testing by Advanced Constant Pressure-step Method.
© The Authors, published by EDP Sciences, 2020
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