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Title: Exploring the potential synergistic effects of chemical disinfectants and UV on the inactivation of free-living bacteria and treatment of biofilms in a pilot-scale system
Authors: Vankerckhoven, Eef ×
Verbessem, Bart
Crauwels, Sam
Declerck, Priscilla
Muylaert, Koenraad
Willems, Kris
Rediers, Hans #
Issue Date: 2011
Publisher: Pergamon Press
Series Title: Water Science and Technology vol:64 issue:6 pages:1247-1253
Abstract: The main objective of this study is to explore possible synergistic or additive effects of combinations of chemical disinfectants (sodium hypochlorite, peracetic acid, hydrogen peroxide, chlorine dioxide) and UV in their efficacy in inactivating free-living bacteria and removing biofilms. In contrast to most studies, this study examines disinfection of municipal water in a pilot-scale system using a mixed bacterial suspension, which enables a better simulation of the conditions encountered in actual industrial environments. It was shown that the combination of either hypochlorite, hydrogen peroxide, peracetic acid, or chlorine dioxide with UV yielded additive effects on the inactivation of free-living bacteria. Actual synergy was observed for the combination of UV and 5 ppm hydrogen peroxide. Regarding biofilm treatment, additive effects were observed using the combination of hydrogen peroxide and UV. The promising results obtained in this study indicate that the combination of UV and chemical disinfectants can considerably reduce the amount of chemicals required for the effective disinfection and treatment of biofilms.
ISSN: 0273-1223
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Biology, Campus Kulak Kortrijk
Centre of Microbial and Plant Genetics
Microbial and Molecular Systems - miscellaneous
Ecology, Evolution and Biodiversity Conservation Section
Bioengineering Technology TC, Technology Campus De Nayer Sint-Katelijne-Waver
Technologiecluster Bioengineering Technologie
× corresponding author
# (joint) last author

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