Biofouling on polymeric heat exchanger surfaces with E. coli and native biofilms

The biofouling affinity of different polymeric surfaces (polypropylene, polysulfone, polyethylene terephthalate, and polyether ether ketone) in comparison to stainless steel (SS) was studied for the model bacterium Escherichia coli K12 DSM 498 and native biofilms originating from Rhine water. The bi...

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Bibliographic Details
Published in:Biofouling (Chur, Switzerland) Switzerland), 2015-01, Vol.31 (9-10), p.699-707
Main Authors: Pohl, S., Madzgalla, M., Manz, W., Bart, H.-J.
Format: Article
Language:English
Subjects:
Biofilms
Biofilms - growth & development
Biofouling
Biomass
Distributed memory
Equipment Design
Escherichia coli
Escherichia coli - growth & development
Freshwater
heat exchanger
Heat exchangers
Hot Temperature
Hydrophobic and Hydrophilic Interactions
Hydrophobicity
materials selection
Models, Theoretical
multispecies biofilm
Polyethylene Glycols - chemistry
polymers
Polymers - chemistry
Rivers - microbiology
Roughness
Stainless Steel - chemistry
Sulfones - chemistry
Surface energy
Surface Properties
Water Microbiology
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Summary:The biofouling affinity of different polymeric surfaces (polypropylene, polysulfone, polyethylene terephthalate, and polyether ether ketone) in comparison to stainless steel (SS) was studied for the model bacterium Escherichia coli K12 DSM 498 and native biofilms originating from Rhine water. The biofilm mass deposited on the polymer surfaces was minimized by several magnitudes compared to SS. The cell count and the accumulated biomass of E. coli on the polymer surfaces showed an opposing linear trend. The promising low biofilm formation on the polymers is attributed to the combination of inherent surface properties (roughness, surface energy and hydrophobicity) when compared to SS. The fouling characteristics of E. coli biofilms show good conformity with the more complex native biofilms investigated. The results can be utilized for the development of new polymer heat exchangers when using untreated river water as coolant or for other processes needing antifouling materials.
ISSN:0892-7014
1029-2454
DOI:10.1080/08927014.2015.1094691