Title: Ozonation and perozonation of humic acids in nanofiltration concentrates
Authors: Van Geluwe, Steven ×
Braeken, Leen
Vinckier, Christiaan
Van der Bruggen, Bart #
Issue Date: Jun-2009
Publisher: Desalination Publications
Series Title: Desalination and Water Treatment vol:6 issue:1-3 pages:217-221
Conference: Membranes in Drinking Water Production and Wastewater Treatment edition:8 location:Toulouse (France) date:20–22 October 2008
Abstract: Nanofiltration is an attractive technology to treat surface water for the production of drinking
water. Due to scaling and fouling of the membranes, the water recovery in nanofiltration is generally
limited to about 80%. This paper is part of a project which elaborates the concept where the
concentrates are treated, so they can return to the feed side of the membrane, without increased
membrane fouling, in order to reduce the water loss. The efficacy of ozonation and perozonation
to remove humic acids in the concentrate is evaluated in this paper. In particular, the degree of
mineralization, the amount of hydrophobic components and the destruction of high molecular
mass fractions are considered. Chemical oxygen demand (COD) decreases fast with increasing
ozone concentrations but reaches an asymptotic value of 40% of the initial COD, which is too high
for this case. There is a selective removal of hydrophobic COD and high molecular mass chains are
decomposed efficiently. The process could not be improved by changing the pH or by simultaneous
adding hydrogen peroxide to the solution.
Description: Presented at the conference on Membranes in Drinking Water Production and Wastewater Treatment,
20–22 October 2008, Toulouse, France
ISSN: 1944-3994
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Process Engineering for Sustainable Systems Section
Molecular Design and Synthesis
× corresponding author
# (joint) last author

Files in This Item:
File Description Status SizeFormat
Article Desalination and Water Treatment.pdfMain article Published 324KbAdobe PDFView/Open


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science