Mitigation of Biofilm Colonization on Various Surfaces in a Model Water Flow System by Use of UV Treatment

Friedman, Liron; Harif, Tali; Herzberg, Moshe; Mamane, Hadas

doi:10.1007/s11270-015-2732-8

Cited by 8 publications

(4 citation statements)

References 69 publications

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“…Whereas Kolappan and Satheesh [ 62 ] observed a reduced attachment of Alteromonas sp. cells to hard surfaces due to UV treatment, Friedman et al [ 120 ] rather linked a reduced viable cell count to a reduced cell abundance on surfaces within their experiments. Cell cycle arrest: Cells experiencing DNA damage might delay or stop the cell cycle to provide more time for DNA repair [ 57 , 121 ].…”

Section: Resultsmentioning

confidence: 99%

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Reducing the Impacts of Biofouling in RO Membrane Systems through In Situ Low Fluence Irradiation Employing UVC-LEDs

et al. 2020

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Biofouling is a major concern for numerous reverse osmosis membrane systems. UV pretreatment of the feed stream showed promising results but is still not an established technology as it does not maintain a residual effect. By conducting accelerated biofouling experiments in this study, it was investigated whether low fluence UV in situ treatment of the feed using UVC light-emitting diodes (UVC-LEDs) has a lasting effect on the biofilm. The application of UVC-LEDs for biofouling control is a novel hybrid technology that has not been investigated, yet. It could be shown that a low fluence of 2 mJ∙cm−2 delays biofilm formation by more than 15% in lab-scale experiments. In addition, biofilms at the same feed channel pressure drop exhibited a more than 40% reduced hydraulic resistance. The delay is probably linked to the inactivation of cells in the feed stream, modified adsorption properties or an induced cell cycle arrest. The altered hydraulic resistance might be caused by a change in the microbial community, as well as reduced adenosine triphosphate levels per cells, possibly impacting quorum sensing and extracellular polymeric substances production. Due to the observed biofilm attributes, low fluence UV-LED in situ treatment of the feed stream seems to be a promising technology for biofouling control.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Reducing the Impacts of Biofouling in RO Membrane Systems through In Situ Low Fluence Irradiation Employing UVC-LEDs

et al. 2020

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“…; Friedman et al . ). In a study analysing the effect of UV on inactivation of planktonic cells and biofilm formation, Lakretz et al .…”

Section: Introductionmentioning

confidence: 97%

“…Previous studies on Pseudomonas aeruginosa, a model biofilm species, have shown that UV irradiation efficiently inactivated planktonic cells, resulting in a reduced biofilm formation (Harris et al 1987;Lakretz et al 2009;Bak et al 2010;Sommers et al 2010;Friedman et al 2016). In a study analysing the effect of UV on inactivation of planktonic cells and biofilm formation, Lakretz et al (2009) demonstrated that wavelengths of 254-260-270 nm were more effective in biofilm control than wavelengths of 239 and 280 nm, based on single-species model biofilm organism.…”

Section: Introductionmentioning

confidence: 99%

Resistance of a multiple-isolate marine culture to ultraviolet C irradiation: inactivationvsbiofilm formation

Kviatkovski

Mamane

Lakretz

et al. 2018

Lett Appl Microbiol

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This study examined the resistance of a multiple-isolate native marine culture to UV-C irradiation, in terms of viability, vitality and the ability to form biofilm. Results of this study showed that even though most of the cells were inactivated both in single-isolate and in multiple-isolate cultures, still the multiple-isolate cultures manages to form biofilms, surprisingly with higher biomass than without irradiation. The significance of the study is in its conclusion that studies on UV-C irradiation of biofilm-forming model micro-organisms are not always applicable to natural multiple-species communities.

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Advances in application of ultraviolet irradiation for biofilm control in water and wastewater infrastructure

Luo

Zhang

et al. 2022

Journal of Hazardous Materials

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Mitigation of Biofilm Colonization on Various Surfaces in a Model Water Flow System by Use of UV Treatment

Cited by 8 publications

References 69 publications

Reducing the Impacts of Biofouling in RO Membrane Systems through In Situ Low Fluence Irradiation Employing UVC-LEDs

Reducing the Impacts of Biofouling in RO Membrane Systems through In Situ Low Fluence Irradiation Employing UVC-LEDs

Resistance of a multiple-isolate marine culture to ultraviolet C irradiation: inactivationvsbiofilm formation

Advances in application of ultraviolet irradiation for biofilm control in water and wastewater infrastructure

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