Biodiversity and ecology of microorganisms in high pressure membrane filtration systems

Vries, Hendrik J. de; Stams, Alfons Johannes Maria; Plugge, Caroline M.

doi:10.1016/j.watres.2020.115511

Cited by 34 publications

(18 citation statements)

References 197 publications

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“…Besides and due to molecular analysis, some bacterial groups appear to tolerate this biocide. Well-known bacterial classes potentially resisting chlorination, such as Bacillus and Clostridia due to their ability to sporulate, are very much identified on fouled membranes [2,14]. For many reasons, biofouling is challengingly difficult to manage in RO systems.…”

Section: Desalination Pretreatmentmentioning

confidence: 99%

“…The presence of bacteria belonging to taxa harboring facultative and obligate chemolithotrophs, such as Geobacter, Desulfuromusa, and Thioalkalivibrio, on the CF potentially indicate the effective removal made by the pre-treatment compartments for certain nutritional compounds, such as ferrous iron or sulfurConsequently, published studies do not uniformly present the composition of the bacterial community at the same taxonomic level, hardening the comparison of bacterial diversity. For instance, a review of [14] compared 33 studies investigating bacterial communities on fouled high-pressure membranes. They classified the identified bacteria at the order level.…”

Section: Microbial Communities In Ro Systemsmentioning

confidence: 99%

“…A total of 35 bacterial orders from those fouled highpressure membranes have been recorded. These orders were used as a benchmark to compare the microbial diversity of feed water, pre-treatment compartments, and fouled membranes, and to detect the role of specific selection pressures on the microbial composition [14,30].…”

Section: Microbial Communities In Ro Systemsmentioning

confidence: 99%

See 2 more Smart Citations

Recent Advances in Measuring and Controlling Biofouling of Seawater Reverse Osmosis SWRO: A Review

Idais¹,

Abuhabib²,

Hamzah³

2022

Osmotically Driven Membrane Processes

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This study presents recent literature that sheds light on the SWRO membrane biofouling, Inventory of causes, consequences, measurement, and possible solutions. In particular, biofouling of SWRO is considered as one of the challenges faced by seawater desalination today. For seawater desalination, mitigating membrane biofouling is essentially required and yet to be overcome. Specific shortcomings and prospective solutions are reviewed towards understanding the biofouling mechanism, pretreatment impacts, level of assimilable nutrients, and real-time monitoring. Accordingly, this review aims to address recent advances in biological fouling measurements and control to better understand biofouling and the best ways of dealing with such a challenging issue.

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Section: Desalination Pretreatmentmentioning

confidence: 99%

Section: Microbial Communities In Ro Systemsmentioning

confidence: 99%

Section: Microbial Communities In Ro Systemsmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in Measuring and Controlling Biofouling of Seawater Reverse Osmosis SWRO: A Review

Idais¹,

Abuhabib²,

Hamzah³

2022

Osmotically Driven Membrane Processes

View full text Add to dashboard Cite

show abstract

“…Based on these results, the families Rhodocyclaceae, Pseudomonadaceae, Comamonadaceae and Burkholderiaceae dominate the microbial community. Especially the abundance of Burkholderiaceae and Pseudomonadacea has been observed frequently on membrane biofilms [21,28]. For all samples, the dominating class is Gammaproteobacteria, but it shall be noted that according to a recent study of Parks et al [131], Betaproteobacteria are now reclassified as an order within the class of Gammaproteobacteria (Burkholderiales [132]).…”

Section: S Rrna Amplicon Sequencingmentioning

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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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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“…There, they are typical biofilm-forming bacteria, especially on plastic membranes [12–14]. On reverse-osmosis membranes for drinking-water production, sphingomonads have been identified as the primary colonizers [15], and they are frequently found on high-pressure membrane filtration systems in general [16]. An obvious prerequisite of sphingomonads as biofilm formers on plastic surfaces in technical systems is their hydrophobic surfaces caused by glycosphingolipids [17].…”

Section: Introductionmentioning

confidence: 99%

Genetic and physiological analysis of biofilm formation on different plastic surfaces by Sphingomonas sp. strain S2M10 reveals an essential function of sphingan biosynthesis

et al. 2020

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Alphaproteobacteria belonging to the group of the sphingomonads are frequently found in biofilms colonizing pure-water systems, where they cause technical and hygienic problems. In this study, physiological properties of sphingomonads for biofilm formation on plastic surfaces were analysed. Sphingomonas sp. strain S2M10 was isolated from a used water-filtration membrane and submitted to transposon mutagenesis for isolating mutants with altered biofilm formation. Mutants showing strongly decreased biofilm formation carried transposon insertions in genes for the biosynthesis of the polysaccharide sphingan and for flagellar motility. Flagella-mediated attachment was apparently important for biofilm formation on plastic materials of intermediate hydrophobicity, while a mutant with defect in spnB, encoding the first enzyme in sphingan biosynthesis, showed no biofilm formation on all tested materials. Sphingan-dependent biofilm formation was induced in the presence of specific carbon sources while it was not induced in complex medium with yeast extract and tryptone. The regulation of sphingan-based biofilm formation was investigated by interfering with the CckA/ChpT/CtrA phosphorelay, a central signal-transduction pathway in most Alphaproteobacteria. Construction and ectopic expression of a kinase-deficient histidine kinase CckA caused cell elongation and massive sphingan-dependent cell aggregation. In addition, it caused increased activity of the promotor of spnB. In conclusion, these results indicate that sphingan-based biofilm formation by sphingomonads might be triggered by specific carbon sources under prototrophic conditions resembling a milieu that often prevails in pure-water systems.

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Biodiversity and ecology of microorganisms in high pressure membrane filtration systems

Cited by 34 publications

References 197 publications

Recent Advances in Measuring and Controlling Biofouling of Seawater Reverse Osmosis SWRO: A Review

Recent Advances in Measuring and Controlling Biofouling of Seawater Reverse Osmosis SWRO: A Review

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

Genetic and physiological analysis of biofilm formation on different plastic surfaces by Sphingomonas sp. strain S2M10 reveals an essential function of sphingan biosynthesis

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