Hydrophilic modification of a poly(ether sulfone) flat‐sheet ultrafiltration membrane applied to coking sewage

ABSTRACT In this article, a new modified poly(ether sulfone) flat‐sheet ultrafiltration membrane, which is expected to effectively handle coking sewage, was prepared by an immersion precipitation phase‐inversion technique to settle the wastewater treatment problem in coking plants. Nanometer TiO2 pa...

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Bibliographic Details
Published in:Journal of applied polymer science 2017-08, Vol.134 (31), p.n/a
Main Authors: Ouyang, Shu Guang, Yao, Jun Yan, Zhu, Guang Heng Wei, Liu, Zhao Yue, Feng, Chi, Wang, Gang
Format: Article
Language:English
Subjects:
Additives
applications
Blending effects
Chemical oxygen demand
Coking
composites
Materials science
Membrane structures
Membranes
nanoparticles, nanowires, nanocrystals
Polyethylene glycol
Polymers
Rejection rate
Sedimentation tanks
separation techniques
Sewage
Submerging
Titanium dioxide
Ultrafiltration
Wastewater treatment
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Summary:ABSTRACT In this article, a new modified poly(ether sulfone) flat‐sheet ultrafiltration membrane, which is expected to effectively handle coking sewage, was prepared by an immersion precipitation phase‐inversion technique to settle the wastewater treatment problem in coking plants. Nanometer TiO2 particle–poly(ethylene glycol) (PEG) blends were used as additives to modify the membranes by a blending method. The effects of different PEG mass concentrations on the membrane structure and properties were studied. The pure water flux and chemical oxygen demand (COD) rejection rate were analyzed as aggregative indicators by the comprehensive evaluation method, and then, the optimal PEG mass concentration was determined. The results show that the best modified effect was obtained at a PEG mass concentration of 0.25%. When coking sewage in a secondary settling tank was filtered with such membranes, the COD rejection rate reached 90.68%, and the water flux was 127.21 L m−2 h−1. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45149.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.45149