Preparation and characterization of PES–SiO₂ organic–inorganic composite ultrafiltration membrane for raw water pretreatment

Ultrafiltration (UF) has become an accepted process for drinking water treatment, but membrane fouling remains a significant problem. Polyethersulfone (PES)/SiO₂ composite membranes were prepared by phase inversion method with nano-SiO₂ as additive. Water contact angle measurement was conducted to i...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2011-04, Vol.168 (3), p.1272-1278
Main Authors: Shen, Jiang-nan, Ruan, Hui-min, Wu, Li-guang, Gao, Cong-jie
Format: Article
Language:English
Subjects:
chemical engineering
contact angle
fouling
hydrophilicity
nanoparticles
permeability
ultrafiltration
water treatment
wettability
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Summary:Ultrafiltration (UF) has become an accepted process for drinking water treatment, but membrane fouling remains a significant problem. Polyethersulfone (PES)/SiO₂ composite membranes were prepared by phase inversion method with nano-SiO₂ as additive. Water contact angle measurement was conducted to investigate the hydrophilicity and surface wettability of the membranes. The effect of SiO₂ nanoparticles on the membrane permeation properties, anti-fouling performances, and membrane morphologies and structures was examined and discussed. The influence of SiO₂ on the water permeability, anti-fouling of the PES membranes were evaluated by raw water UF experiments. The results showed that the membrane structure was not obviously affected by addition of SiO₂, and the membrane performances such as hydrophilicity and anti-fouling ability were enhanced by adding SiO₂ nanoparticles.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2011.02.039