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Article: Fabrication and characterization of nanocomposite pressure retarded osmosis (PRO) membranes with excellent anti-biofouling property and enhanced water permeability

TitleFabrication and characterization of nanocomposite pressure retarded osmosis (PRO) membranes with excellent anti-biofouling property and enhanced water permeability
Authors
Issue Date2016
Citation
Desalination, 2016, v. 389, p. 137-148 How to Cite?
AbstractMembrane biofouling is a critical barrier for prolonged membrane operations. In the current study, silver nanocomposite osmotic membranes were fabricated to impart anti-microbial properties. The PAN–Ag nanocomposite substrates were prepared using one-step phase inversion. With additional crosslinked layer-by-layer (xLbL) assembly on the nanocomposite substrates, xLbL3.0-Ag nanocomposite osmotic membranes were obtained. At the silver nanoparticle (AgNP) loading concentration of 0.02 wt.%, water permeability of xLbL3.0-Ag(0.02) nanocomposite osmotic membrane increased by 24.4% compared with the AgNP-free control. In addition, the silver nanocomposite membranes exhibited excellent anti-biofouling performances, with ~ 6 log colony-forming units (CFU) reduction against Gram-positive Bacillus subtilis and ~ 5 log CFU reduction against Gram-negative Escherichia coli at an AgNP loading of 0.10 wt.%. Water flux reduced to 66.9% (AgNP-free control) and 88.2% (xLbL3.0-Ag(0.10) nanocomposite osmotic membrane) of their respective original values for membranes fouled by Comamonas testosteroni I2 in PRO test mode. This study presents a convenient method to synthesize nanocomposite osmotic membranes with excellent anti-biofouling property for potential use for pressure retarded osmosis (PRO). Our results provide significant implications for anti-fouling nanocomposite osmotic membrane fabrication as well as PRO fouling control.
Persistent Identifierhttp://hdl.handle.net/10722/247300
ISSN
2017 Impact Factor: 6.603
2015 SCImago Journal Rankings: 1.549
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLiu, X-
dc.contributor.authorFoo, L-
dc.contributor.authorLi, Y-
dc.contributor.authorLee, J-
dc.contributor.authorCao, B-
dc.contributor.authorTang, C-
dc.date.accessioned2017-10-18T08:25:14Z-
dc.date.available2017-10-18T08:25:14Z-
dc.date.issued2016-
dc.identifier.citationDesalination, 2016, v. 389, p. 137-148-
dc.identifier.issn0011-9164-
dc.identifier.urihttp://hdl.handle.net/10722/247300-
dc.description.abstractMembrane biofouling is a critical barrier for prolonged membrane operations. In the current study, silver nanocomposite osmotic membranes were fabricated to impart anti-microbial properties. The PAN–Ag nanocomposite substrates were prepared using one-step phase inversion. With additional crosslinked layer-by-layer (xLbL) assembly on the nanocomposite substrates, xLbL3.0-Ag nanocomposite osmotic membranes were obtained. At the silver nanoparticle (AgNP) loading concentration of 0.02 wt.%, water permeability of xLbL3.0-Ag(0.02) nanocomposite osmotic membrane increased by 24.4% compared with the AgNP-free control. In addition, the silver nanocomposite membranes exhibited excellent anti-biofouling performances, with ~ 6 log colony-forming units (CFU) reduction against Gram-positive Bacillus subtilis and ~ 5 log CFU reduction against Gram-negative Escherichia coli at an AgNP loading of 0.10 wt.%. Water flux reduced to 66.9% (AgNP-free control) and 88.2% (xLbL3.0-Ag(0.10) nanocomposite osmotic membrane) of their respective original values for membranes fouled by Comamonas testosteroni I2 in PRO test mode. This study presents a convenient method to synthesize nanocomposite osmotic membranes with excellent anti-biofouling property for potential use for pressure retarded osmosis (PRO). Our results provide significant implications for anti-fouling nanocomposite osmotic membrane fabrication as well as PRO fouling control.-
dc.languageeng-
dc.relation.ispartofDesalination-
dc.titleFabrication and characterization of nanocomposite pressure retarded osmosis (PRO) membranes with excellent anti-biofouling property and enhanced water permeability-
dc.typeArticle-
dc.identifier.emailTang, C: tangc@hku.hk-
dc.identifier.authorityTang, C=rp01765-
dc.identifier.doi10.1016/j.desal.2016.01.037-
dc.identifier.hkuros281273-
dc.identifier.volume389-
dc.identifier.spage137-
dc.identifier.epage148-
dc.identifier.isiWOS:000375818700014-

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