Phosphate limitation to control biofouling

Vrouwenvelder, Johannes S.; Beyer, Florian; Dahmani, K.; Na, Hasan; Galjaard, G.; Kruithof, Joop C.; Loosdrecht, M.C.M. van

doi:10.1016/j.watres.2010.03.026

Cited by 123 publications

(86 citation statements)

References 50 publications

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“…Interestingly, when trying to limit the levels of phosphate to control biofouling of RO membranes, Vrouwenvelder and colleagues observed postponed biofouling at low phosphate concentrations, which restricted biomass growth [64].…”

Section: Bacterial Surface Structurementioning

confidence: 99%

The role of cell-surface interactions in bacterial initial adhesion and consequent biofilm formation on nanofiltration/reverse osmosis membranes

Habimana

Semiao

Casey

2014

Journal of Membrane Science

226

113

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Section: Bacterial Surface Structurementioning

confidence: 99%

The role of cell-surface interactions in bacterial initial adhesion and consequent biofilm formation on nanofiltration/reverse osmosis membranes

Habimana

Semiao

Casey

2014

Journal of Membrane Science

226

113

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“…Current strategies to control biofouling include feedwater pre-treatment to remove bacteria before they reach the RO membranes and nutrients to limit bacterial development, and dosing of biocides such as chlorine and monochloramine [6,7]. Chlorine is a strong biocide, and has been widely used for biofouling control in membrane systems.…”

Section: Introductionmentioning

confidence: 99%

Biofouling and scaling control of reverse osmosis membrane using one-step cleaning-potential of acidified nitrite solution as an agent

Filloux

Wang

Pidou

et al. 2015

Journal of Membrane Science

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scaling control of reverse osmosis membrane using one-step cleaning-potential of acidified nitrite solution as an a g e n t , Journal of Membrane Science, http://dx.doi.org/10. 1016/j.memsci.2015.08.034 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractBiofouling is generally regarded as a major issue in reverse osmosis (RO) membrane filtration. Two-step chemical cleanings with alkaline and acidic agents are typically applied to restore the treatment capacity. In this study, the feasibility of one-step cleaning using free nitrous acid (FNA) was investigated as a novel low cost cleaning agent. The FNA cleaning solution was prepared by acidification of a sodium nitrite solution with hydrochloric acid.Seven fouled RO membranes collected from full-scale wastewater recycling and desalination plants were used to perform lab-scale cleaning trials. Membrane fouling characterisation revealed six of out of seven membranes were mainly bio-fouled, while one membrane was severely fouled by calcium carbonate. This study showed the feasibility of using FNA at pH 3.0 for biomass removal as well as for calcium carbonate scaling removal. The results from the lab-scale cleaning tests suggested that FNA can be used as a single cleaning agent for both biofouling and scaling removal. Cost analysis showed that FNA is a cost-effective solution for biofouling and scaling removal in RO filtration applications.

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“…To enhance biofilm growth a solution of sodium acetate, sodium nitrate, and sodium dihydrogen orthophosphate in a mass ratio C:N:P of 100:20:10, respectively, was employed increasing the C concentration in the MFS feed water with 400 µg•L -1 . The typical C:N:P ratio in biomass is ≈100:20:4.3.An excess of phosphorous was dosed to ensure that phosphate limitation did not restrict biofilm formation in the MFSs [34].…”

Section: Long-term Biofouling Experimentsmentioning

confidence: 99%

Coating of reverse osmosis membranes with amphiphilic copolymers for biofouling control

Bucs¹,

Linares²,

Siddiqui³

et al. 2017

dwt

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a b s t r a c tSurface coating of membranes may be a promising option to control biofilm development and biofouling impact on membrane performance of spiral-wound reverse osmosis (RO) systems. The objective of this study was to investigate the impact of an amphiphilic copolymer coating on biofilm formation and biofouling control. The coating was composed of both hydrophilic and hydrophobic monomers hydroxyethyl methacrylate (HEMA) and perfluorodecyl acrylate (PFA), respectively. Commercial RO membranes were coated with HEMA-PFA copolymer film. Long and short term biofouling studies with coated and uncoated membranes and feed spacer were performed using membrane fouling simulators (MFSs) operated in parallel, fed with water containing nutrients. For the long-term studies pressure drop development in time was monitored and after eight days the MFSs were opened and the accumulated biofilm on the membrane and spacer sheets was quantified and characterized. The presence of the membrane coating was determined using X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). Results showed that the amphiphilic coating (i) delayed biofouling (a lower pressure drop increase by a factor of 3 and a lower accumulated active biomass amount by a factor of 6), (ii) influenced the biofilm composition (23% lower polysaccharides and 132% higher protein content) and (iii) was still completely present on the membrane at the end of the biofouling study, showing that the coating was strongly attached to the membrane surface. Using coated membranes and feed spacers in combination with advanced cleaning strategies may be a suitable way to control biofouling.

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Phosphate limitation to control biofouling

Cited by 123 publications

References 50 publications

The role of cell-surface interactions in bacterial initial adhesion and consequent biofilm formation on nanofiltration/reverse osmosis membranes

The role of cell-surface interactions in bacterial initial adhesion and consequent biofilm formation on nanofiltration/reverse osmosis membranes

Biofouling and scaling control of reverse osmosis membrane using one-step cleaning-potential of acidified nitrite solution as an agent

Coating of reverse osmosis membranes with amphiphilic copolymers for biofouling control

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