Application of nanosilver surface modification to RO membrane and spacer for mitigating biofouling in seawater desalination

Yang, Hui; Lin, Justin Chun Te; Huang, Ch-Hpin

doi:10.1016/j.watres.2009.06.002

Cited by 235 publications

(99 citation statements)

References 45 publications

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“…The coating layer was easily removed by lateral forces [55]. Experiments with silver nanoparticle coated feed spacers showed silver leaching during a flow cell fouling study [57]. Similar results were found with silver coated membranes (unpublished data).…”

Section: Coating Stabilitysupporting

confidence: 54%

Coating of reverse osmosis membranes with amphiphilic copolymers for biofouling control

Bucs¹,

Linares²,

Siddiqui³

et al. 2017

Desalination and Water Treatment

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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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Section: Coating Stabilitysupporting

confidence: 54%

Coating of reverse osmosis membranes with amphiphilic copolymers for biofouling control

Bucs¹,

Linares²,

Siddiqui³

et al. 2017

Desalination and Water Treatment

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show abstract

“…These modifications include surface polymerization [82,92], functionalization [93][94][95], derivatization [96], involving the use of chemicals for altering membrane surface properties.…”

Section: Antibacterial Membranesmentioning

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

233

113

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“…These multi-functional membranes would be self-cleaning, antifouling www.intechopen.com performance and could inactivate virus and eliminate organic matter. An example would be reverse osmosis membranes and its spacers with nanosilver coating, which would improve bacteria removal and antifouling performance (Yang at al., 2009;Zodrow et al, 2009). -Nanosponge for rainwater harvesting, a combination of polymers and glass nanoparticles that can be printed onto surfaces like fabrics to soak up water.…”

Section: Nanotechnology and Water Suppliesmentioning

confidence: 99%

Nanotechnology and Food Industry

Gutiérrez¹,

Mussons²,

Gatón³

et al. 2012

Scientific, Health and Social Aspects of the Food Industry

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Application of nanosilver surface modification to RO membrane and spacer for mitigating biofouling in seawater desalination

Cited by 235 publications

References 45 publications

Coating of reverse osmosis membranes with amphiphilic copolymers for biofouling control

Coating of reverse osmosis membranes with amphiphilic copolymers for biofouling control

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

Nanotechnology and Food Industry

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