Antifouling Ability of Hydrophilic PVDF-TiO2 membrane Evaluated by Critical Flux and Threshold Flux

Wanying Xie; Ji Li; Feiyun Sun; Wenyi Dong

doi:10.1051/e3sconf/202014401015

Antifouling Ability of Hydrophilic PVDF-TiO² membrane Evaluated by Critical Flux and Threshold Flux

Wanying Xie
, Ji Li
, Feiyun Sun^*
, Wenyi Dong

^*Corresponding author for this work

Harbin Institute of Technology Shenzhen

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

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 (J_CW) and threshold flux (J_TH) 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 J_cw and J_TH and better anti-protein fouling ability after testing by Advanced Constant Pressure-step Method.

Original language	English
Article number	01015
Journal	E3S Web of Conferences
Volume	144
DOIs	https://doi.org/10.1051/e3sconf/202014401015
State	Published - 27 Jan 2020
Externally published	Yes
Event	2nd International Symposium on Water Resource and Environmental Management, WREM 2019 - Sanya, China Duration: 20 Dec 2019 → 21 Dec 2019

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@article{f655810486f84bdeb4c104950402856c,

title = "Antifouling Ability of Hydrophilic PVDF-TiO2 membrane Evaluated by Critical Flux and Threshold Flux",

abstract = "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.",

author = "Wanying Xie and Ji Li and Feiyun Sun and Wenyi Dong",

note = "Publisher Copyright: {\textcopyright} The Authors, published by EDP Sciences, 2020.; 2nd International Symposium on Water Resource and Environmental Management, WREM 2019 ; Conference date: 20-12-2019 Through 21-12-2019",

year = "2020",

month = jan,

day = "27",

doi = "10.1051/e3sconf/202014401015",

language = "英语",

volume = "144",

journal = "E3S Web of Conferences",

issn = "2267-1242",

publisher = "EDP Sciences",

}

TY - JOUR

T1 - Antifouling Ability of Hydrophilic PVDF-TiO2 membrane Evaluated by Critical Flux and Threshold Flux

AU - Xie, Wanying

AU - Li, Ji

AU - Sun, Feiyun

AU - Dong, Wenyi

N1 - Publisher Copyright: © The Authors, published by EDP Sciences, 2020.

PY - 2020/1/27

Y1 - 2020/1/27

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85078929098

U2 - 10.1051/e3sconf/202014401015

DO - 10.1051/e3sconf/202014401015

M3 - 会议文章

AN - SCOPUS:85078929098

SN - 2267-1242

VL - 144

JO - E3S Web of Conferences

JF - E3S Web of Conferences

M1 - 01015

T2 - 2nd International Symposium on Water Resource and Environmental Management, WREM 2019

Y2 - 20 December 2019 through 21 December 2019

ER -

Antifouling Ability of Hydrophilic PVDF-TiO² membrane Evaluated by Critical Flux and Threshold Flux

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