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Title: Role of transparent exopolymer particles on membrane fouling in a full-scale ultrafiltration plant: Feed parameter analysis and membrane autopsy
Authors: Discart, Valerie
Bilad, M R
Van Nevel, S
Boon, N
Cromphout, J
Vankelecom, Ivo # ×
Issue Date: Dec-2014
Publisher: Elsevier Applied Science
Series Title: Bioresource Technology vol:173 pages:67-74
Article number: 10.1016/j.biortech.2014.08.098
Abstract: Ultrafiltration (UF) is widely used for water purification, but membrane fouling remains an important issue. In this study, the role of transparent exopolymer particles (TEPs), recently put forward as possible major foulants, was investigated in the fouling process of a full-scale UF installation. Algae, TEPs and other parameters in the UF feed were monitored and correlated during an 8months long full-scale operation. Results revealed a complex fouling mechanism involving interactions mainly between algae, Fe (flocculant) and TEPs. Algae related parameters rather that TEP concentrations correlated stronger with irreversible fouling rates, suggesting that the overall role of TEPs in membrane fouling seems limited for this application. Finally, membrane autopsy showed the formation of a thick Fe-rich fouling layer on top of the fouled membranes, which could mostly be removed via cleaning-in-place. It remained partly irremovable in the form of some Fe-organic complexes.
URI: 
ISSN: 0960-8524
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
Ecology, Evolution and Biodiversity Conservation Section
× corresponding author
# (joint) last author

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