Determination of nutrients limiting biofilm formation and the subsequent impact on disinfectant decay

Chandy, Joseph P.; Angles, Mark

doi:10.1016/s0043-1354(00)00572-8

Cited by 111 publications

(57 citation statements)

References 14 publications

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“…The presence and significance of biofilms in DWDS have been repeatedly reported (16,18). Biofilm growth and detachment contribute to the increase in the number of cells in bulk water (5). Some of those microorganisms can be pathogens.…”

mentioning

confidence: 94%

Influence of the Diversity of Bacterial Isolates from Drinking Water on Resistance of Biofilms to Disinfection

Simões

Vieira

2010

Appl Environ Microbiol

149

110

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Single-and multispecies biofilms formed by six drinking water-isolated bacterial species were used to assess their susceptibilities to sodium hypochlorite (SHC). In general, multispecies biofilms were more resistant to inactivation and removal than single biofilms. Total biofilm inactivation was achieved only for Acinetobacter calcoaceticus single-species biofilms and for those multispecies biofilms without A. calcoaceticus. Biofilms with all bacteria had the highest resistance to SHC, while those without A. calcoaceticus were the most susceptible. A. calcoaceticus formed single biofilms susceptible to SHC; however, its presence in multispecies biofilms increased their resistance to disinfection.The control of drinking water (DW) quality in distribution systems is a major technological challenge to the water industry. DW networks can be regarded as biological reactors which host a wide variety of microorganisms (bacteria, protozoa, and fungi), both in the bulk water and on the pipe surfaces. In DW distribution systems (DWDS), Acinetobacter, Aeromonas, Alcaligenes, Arthrobacter/Corynebacterium, Bacillus, Burkholderia, Citrobacter, Enterobacter, Flavobacterium, Klebsiella, Methylobacterium, Moraxella, Pseudomonas, Serratia, Staphylococcus, Mycobacterium, Sphingomonas, and Xanthomonas have been the predominant bacterial genera detected (2, 3). The Gramnegative bacteria are predominant over the Gram-positive bacteria, and Pseudomonas is the most abundant bacterial organism in supply systems, regardless of the water source. Most of the biomass present in these DWDS is located at the pipe walls. Flemming et al. (7) proposed that 95% of the bacteria were adhered to the surface of pipelines and only 5% were present in the bulk water. The presence and significance of biofilms in DWDS have been repeatedly reported (16,18). Biofilm growth and detachment contribute to the increase in the number of cells in bulk water (5). Some of those microorganisms can be pathogens. Commonly encountered waterborne pathogens are Burkholderia pseudomallei, Campylobacter spp., Escherichia coli, Helicobacter pylori, Legionella pneumophila, Mycobacterium avium, Pseudomonas aeruginosa, Salmonella spp., Shigella spp., Yersinia enterocolitica, and Vibrio cholerae (32). Therefore, biofilm control is important for technical, esthetic, regulatory, and public health reasons.Chlorine disinfection is a key step in the biofilm control process. Residual concentrations must be kept below guidelines to lower the potential to form harmful disinfection byproducts (20). Chlorine, a strong oxidizing agent, is the most commonly used disinfectant due to its effectiveness, stability, easy of use, and low cost. However, biofilm formation and resistance to disinfection have been recognized as important factors that contribute to the survival and persistence of microbial contamination in DW (2). Research into DW biofilm control will help to determine optimal disinfection parameters and lead to knowledgeable decisions regarding the management of DW distribution ne...

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mentioning

confidence: 94%

Influence of the Diversity of Bacterial Isolates from Drinking Water on Resistance of Biofilms to Disinfection

Simões

Vieira

2010

Appl Environ Microbiol

149

110

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“…[5][6][7] 69 DWDS harbor biofilms even in the presence of disinfectants, 8 potentially affecting the 70 turbidity, taste, odor and color of the water, 9 and in many cases, promoting the decay of 71 residual disinfectants. 10 Growth of biofilms therefore necessitates increased levels of 72 disinfectant agents to improve the disinfection outcome, which can negatively impact the 73 chemical and aesthetic quality of drinking water. Biofilm growth in distribution systems 74 could also increase flow resistance, 3 affecting the network's hydraulic efficiency in the long 75 (AHLs) 30 system present in many Gram-negative species and the peptide-based signaling 126 system present in many Gram-positive species.…”

Section: Introductionmentioning

confidence: 99%

Understanding, Monitoring, and Controlling Biofilm Growth in Drinking Water Distribution Systems

Liu¹,

Gunawan

Barraud

et al. 2016

Environ. Sci. Technol.

339

174

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ABSTRACT:In drinking water distribution systems (DWDS), biofilms are the predominant 1 mode of microbial growth with the presence of extracellular polymeric substance (EPS) 2 protecting the biomass from environmental and shear stresses. Biofilm formation poses a 3 significant problem to the drinking water industry as a potential source of bacterial 4 contamination, including pathogens and in many cases also affecting the taste and odor of 5 drinking water and promotes corrosion of pipes. This article critically reviews important 6 research findings on biofilm growth in DWDS, examining the factors affecting their 7 formation and characteristics, as well as the various technologies to characterize, monitor and 8 ultimately, to control their growth. Research indicates that temperature fluctuations 9 potentially affect not only the initial bacteria-to-surface attachment but also the growth rates 10 of biofilms. For the latter, the effect is unique for each type of biofilm-forming bacteria -11 ammonia oxidizing bacteria for example, grow more developed biofilms at typical summer 12 temperature of 22C compared to 12C in fall , while the opposite occurs for the pathogenic 13 RNA, EPS, protein and lipid stains) and electron microscopy imaging (ESEM). Importantly, 24 thorough identification of microbial fingerprints in drinking water biofilms is achievable with 25 3

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“…Drinking water distribution systems are considered as an oligotrophic environment with low content of carbon, nitrogen and phosphorus sources (Chandy et al, 2001;Hu et al, 2005). Microorganisms in water supply systems form a biofilm, adapting to grow in this specific environments (Rodriguez et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Biofilms From Selected Synthetic Materials Used in Water Distribution System

Biedroń¹,

Traczewska²,

Konieczny³

et al. 2017

J. Ecol. Eng.

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Materials like polyvinyl chloride (PVC), polypropylene (PP), ultra high molecular weight polyethylene (UHMW-PE) are used for the construction of drinking water supply systems. It was found that regardless of the type of material the distribution network is built of, microorganisms formed biofilms on every available surface. The pipes material plays a key role in terms of biofilm formation. Important factors are the surface roughness, adhesives, plasticizers, stabilizers, which can be a source of nutrients for bacteria. The metabolic activity of microorganisms on polymer materials, induces migration of compounds from the material into water. The aim of this study was to present the differences in the structure and the metabolic profile of biofilm formed on the technical materials.

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Determination of nutrients limiting biofilm formation and the subsequent impact on disinfectant decay

Cited by 111 publications

References 14 publications

Influence of the Diversity of Bacterial Isolates from Drinking Water on Resistance of Biofilms to Disinfection

Influence of the Diversity of Bacterial Isolates from Drinking Water on Resistance of Biofilms to Disinfection

Understanding, Monitoring, and Controlling Biofilm Growth in Drinking Water Distribution Systems

Characterization of Biofilms From Selected Synthetic Materials Used in Water Distribution System

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