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Title: Ozone oxidation of nanofiltration concentrates alleviates membrane fouling in drinking water industry
Authors: Van Geluwe, Steven ×
Vinckier, Chris
Braeken, Leen
Van der Bruggen, Bart #
Issue Date: Aug-2011
Publisher: Elsevier Scientific Pub. Co.
Series Title: Journal of Membrane Science vol:378 issue:1-2 pages:128-137
Abstract: Nanofiltration is an attractive technology for the production of drinking water from surface water. However, membrane fouling, mainly caused by natural organic matter, increases the costs and limits the water recovery. In this study, it was investigated whether the decomposition of natural organic matter in the concentrate stream by O3, has a positive effect on the membrane flux of four nanofiltration membranes (NF 90, NF 270, Desal 51, NF-PES 10). The results show that O3 oxidation causes a significant alleviation of membrane fouling for every investigated membrane. This is caused by the selective removal of unsaturated bonds and hydrophobic components in the dissolved organic matter, and the decomposition of molecular chains into smaller fragments by O3. However, the chemical oxygen demand could not be reduced by more than 20%. The performance of O3 + H2O2 was only slightly superior to O3 alone, using an identical O3 dose.
ISSN: 0376-7388
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Faculteit Industrieel Ingenieur - KHLim
Process Engineering for Sustainable Systems Section
Molecular Design and Synthesis
× corresponding author
# (joint) last author

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