Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 398809
Title Biofilm formation on reverse osmosis membranes is initiated and dominated by Sphingomonas spp
Author(s) Bereschenko, L.A.; Stams, A.J.M.; Euverink, G.J.W.; Loosdrecht, M.C.M.
Source Applied and Environmental Microbiology 76 (2010)8. - ISSN 0099-2240 - p. 2623 - 2632.
DOI https://doi.org/10.1128/AEM.01998-09
Department(s) Microbiology
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) targeted oligonucleotide probes - pseudomonas-aeruginosa - community structure - microbial biofilms - bacteria - identification - adhesion - ultramicrobacterium - polysaccharides - hybridization
Abstract The initial formation and spatiotemporal development of microbial biofilm layers on surfaces of new and clean reverse osmosis (RO) membranes and feed-side spacers were monitored in situ using flow cells placed in parallel with the RO system of a full-scale water treatment plant. The feed water of the RO system had been treated by the sequential application of coagulation, flocculation, sand filtration, ultrafiltration, and cartridge filtration processes. The design of the flow cells permitted the production of permeate under cross-flow conditions similar to those in spiral-wound RO membrane elements of the full-scale system. Membrane autopsies were done after 4, 8, 16, and 32 days of flow-cell operation. A combination of molecular (fluorescence in situ hybridization [FISH], denaturing gradient gel electrophoresis [DGGE], and cloning) and microscopic (field emission scanning electron, epifluorescence, and confocal laser scanning microscopy) techniques was applied to analyze the abundance, composition, architecture, and three-dimensional structure of biofilm communities. The results of the study point out the unique role of Sphingomonas spp. in the initial formation and subsequent maturation of biofilms on the RO membrane and feed-side spacer surfaces
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