Nanogel-based coating as an alternative strategy for biofilm control in drinking water distribution systems

Biofilm formation and detachment in drinking water distribution systems (DWDS) can lead to several operational issues. Here, an alternative biofilm control strategy of limiting bacterial adhesion by application of a poly(N-isopropylmethacrylamide)-based nanogel coating on DWDS pipe walls was investi...

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Bibliographic Details
Published in:Biofouling (Chur, Switzerland) Switzerland), 2023-02, Vol.39 (2), p.121-134
Main Authors: Sójka, Olga, Keskin, Damla, van der Mei, Henny C., van Rijn, Patrick, Gagliano, Maria Cristina
Format: Article
Language:English
Subjects:
Adhesion
anti-adhesive coating
Bacteria
bacterial adhesion
biofilm
Biofilms
Coatings
Distribution
Drinking water
Drinking Water - microbiology
drinking water distribution
Microbiological strains
Nanogels
Pipes
Reduction
Roughness
Water distribution
Water distribution systems
Water engineering
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Summary:Biofilm formation and detachment in drinking water distribution systems (DWDS) can lead to several operational issues. Here, an alternative biofilm control strategy of limiting bacterial adhesion by application of a poly(N-isopropylmethacrylamide)-based nanogel coating on DWDS pipe walls was investigated. The nanogel coatings were successfully deposited on surfaces of four polymeric pipe materials commonly applied in DWDS construction. Nanogel-coated and non-coated pipe materials were characterized in terms of their surface hydrophilicity and roughness. Four DWDS relevant bacterial strains, representing Sphingomonas and Pseudomonas, were used to evaluate the anti-adhesive performance of the coating in 4 h adhesion and 24 h biofilm assays. The presence of the nanogel coating resulted in adhesion reduction up to 97%, and biofilm reduction up to 98%, compared to non-coated surfaces. These promising results motivate further investigation of nanogel coatings as a strategy for biofilm prevention in DWDS.
ISSN:0892-7014
1029-2454
DOI:10.1080/08927014.2023.2190023