Biofouling formation and modeling in nanofiltration membranes applied to wastewater treatment

Ivnitsky, Hanan; Minz, Dror; Kautsky, Larissa; Preis, Ami; Ostfeld, Avi; Semiat, Raphael; Dosoretz, Carlos G.

doi:10.1016/j.memsci.2010.05.007

Cited by 46 publications

(14 citation statements)

References 34 publications

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“…In accordance with the data of Fig. 2 that the values of the sulfate ion rejection membrane for commercial vary slightly with the addition product, which is not observed in the synthesized membrane, where the variation is increased [14,15].…”

Section: Evaluation Of the Performance Of Nanofiltration Membranesupporting

confidence: 88%

Biofimls Formation in Nanofiltration Membranes

França¹,

Calixto²,

Bezerra³

et al. 2015

JCCE

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Technological advances in the past 30 years have boosted the use of PSM (membrane separation processes), important for its efficiency and flexibility of operation. These processes can be used in many types of separation, with some advantages over the usual separation processes. NF (nanofiltration) is a membrane separation technique, which has properties intermediate between reverse osmosis and ultrafiltration in terms of separated species, because the average of the pores is in the range of ½ to 10 nm, and the separation occurs in function of load and size of the species. Usually removes species in solution with an effective diameter of about 1 nm or larger and multivalent ions to a greater extent than monovalent ions. The objective was to study the formation of biofouling on the surface of commercial nanofiltration membrane (Osmonics/GE) and surface membrane synthesized in our laboratory. The study was conducted in permeation system with filtration cell with tangential displacement of 15 bar for 8 days flow. DBNPA (2,2-dibromo-3-nitrilopropionamide) was used as a biocide agent, and an anti-fouling, in concentrations of 5 and 300 ppm, respectively, added to the water coming from the Beach Sea Galleon, RJ. The results demonstrated that there was no change in the flow and rejection of sulphate ions, even in the presence of anti-fouling. The count of aerobic, anaerobic and BRS (sulfate reducing bacteria) in seawater before and after using the DBNPA showed efficiency in controlling these groups of microorganisms and biofouling microbial consortium consisting of the existing in seawater.

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Section: Evaluation Of the Performance Of Nanofiltration Membranesupporting

confidence: 88%

Biofimls Formation in Nanofiltration Membranes

França¹,

Calixto²,

Bezerra³

et al. 2015

JCCE

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“…While permeate flux decline due to the development of a biofilm on the membrane was well-established in many studies [12][13][14], there could be multiple causes for this decline. This gave rise to contradictory conclusions and a difficulty in isolating the relative contribution of the different causes.…”

Section: Biofilm Effect On Fluxmentioning

confidence: 99%

Interactions between biofilms and NF/RO flux and their implications for control—A review of recent developments

Gutman

Fox

Gilron

2012

Journal of Membrane Science

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“…Biofouling is a common phenomenon in aquatic environments. Biofilms are formed naturally on flora and fauna (Rao et al ., ; Egan et al ., ), sediments (Heijs et al ., ) and man‐made structures such as ships (Candries & Atlar, ), pipelines (López et al ., ), nanofiltration membranes (Ivnitsky et al ., ) and reverse osmosis membranes (Vrouwenvelder & van der Kooij, ). Some of these biofilms can cause costly damages such as corrosion (Al‐Malahy & Hodgkiess, ), drag force of ships (Candries & Atlar, ) and a decrease in desalination process effectiveness (Vrouwenvelder & van der Kooij, ).…”

Section: Introductionmentioning

confidence: 99%

Rhodobacteraceaeare the key members of the microbial community of the initial biofilm formed in Eastern Mediterranean coastal seawater

Elifantz

Horn²,

Ayon

et al. 2013

FEMS Microbiol Ecol

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207

108

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The formation of biofilms and biofouling is a common feature in aquatic environments. The aim of this study was to identify the primary colonizers of biofilm formed in Eastern Mediterranean Coastal water at different seasons and follow early dynamics of biofilm community development. Pre-treated coastal seawater and biofilm samples were collected from six different sampling events of 2 weeks' duration each during 1 year. The microbial community composition and specific abundance were estimated by 16S rRNA gene clone libraries and fluorescence in situ hybridization-confocal laser scanning microscopy (FISH-CLSM), respectively. The biofilm formed over the course of the year was fairly consistent in terms of community composition and overall abundance with the exception of spring season. Alphaproteobacteria (30-70% of total bacteria), in particular Rhodobacteraceae, were the dominant bacteria in the biofilm, regardless of season, followed by Bacteroidetes (5-35%) and Gammaproteobacteria (6-35%). There was a decrease in relative abundance of Alphaproteobacteria and an increase in the abundance of Bacteroidetes between the initial and 2-week-old biofilm. This observation may aid man-made facilities that have to deal with biofilm formation and help the development of appropriate strategies to control those biofilms.

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Biofouling formation and modeling in nanofiltration membranes applied to wastewater treatment

Cited by 46 publications

References 34 publications

Biofimls Formation in Nanofiltration Membranes

Biofimls Formation in Nanofiltration Membranes

Interactions between biofilms and NF/RO flux and their implications for control—A review of recent developments

Rhodobacteraceaeare the key members of the microbial community of the initial biofilm formed in Eastern Mediterranean coastal seawater

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