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Article: Dynamics of silver elution from functionalised antimicrobial nanofiltration membranes

TitleDynamics of silver elution from functionalised antimicrobial nanofiltration membranes
Authors
Keywordsbiofouling
ICP
leaching
Nanofiltration
silver modification
Issue Date2017
PublisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/08927014.asp
Citation
Biofouling, 2017, v. 33 n. 6, p. 520-529 How to Cite?
AbstractIn an effort to mitigate biofouling on thin film composite membranes such as nanofiltration and reverse osmosis, a myriad of different surface modification strategies has been published. The use of silver nanoparticles (Ag-NPs) has emerged as being particularly promising. Nevertheless, the stability of these surface modifications is still poorly understood, particularly under permeate flux conditions. Leaching or elution of Ag-NPs from the membrane surface can not only affect the antimicrobial characteristics of the membrane, but could also potentially present an environmental liability when applied in industrial-scale systems. This study sought to investigate the dynamics of silver elution and the bactericidal effect of an Ag-NP functionalised NF270 membrane. Inductively coupled plasma-atomic emission spectroscopy was used to show that the bulk of leached silver occurred at the start of experimental runs, and was found to be independent of salt or permeate conditions used. Cumulative amounts of leached silver did, however, stabilise following the initial release, and were shown to have maintained the biocidal characteristics of the modified membrane, as observed by a higher fraction of structurally damaged Pseudomonas fluorescens cells. These results highlight the need to comprehensively assess the time-dependent nature of bactericidal membranes.
Persistent Identifierhttp://hdl.handle.net/10722/243550
ISSN
2019 Impact Factor: 2.351
2015 SCImago Journal Rankings: 1.219
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChoudhari, S-
dc.contributor.authorHabimana, O-
dc.contributor.authorHannon, J-
dc.contributor.authorAllen, A-
dc.contributor.authorCummins, E-
dc.contributor.authorCasey, E-
dc.date.accessioned2017-08-25T02:56:20Z-
dc.date.available2017-08-25T02:56:20Z-
dc.date.issued2017-
dc.identifier.citationBiofouling, 2017, v. 33 n. 6, p. 520-529-
dc.identifier.issn0892-7014-
dc.identifier.urihttp://hdl.handle.net/10722/243550-
dc.description.abstractIn an effort to mitigate biofouling on thin film composite membranes such as nanofiltration and reverse osmosis, a myriad of different surface modification strategies has been published. The use of silver nanoparticles (Ag-NPs) has emerged as being particularly promising. Nevertheless, the stability of these surface modifications is still poorly understood, particularly under permeate flux conditions. Leaching or elution of Ag-NPs from the membrane surface can not only affect the antimicrobial characteristics of the membrane, but could also potentially present an environmental liability when applied in industrial-scale systems. This study sought to investigate the dynamics of silver elution and the bactericidal effect of an Ag-NP functionalised NF270 membrane. Inductively coupled plasma-atomic emission spectroscopy was used to show that the bulk of leached silver occurred at the start of experimental runs, and was found to be independent of salt or permeate conditions used. Cumulative amounts of leached silver did, however, stabilise following the initial release, and were shown to have maintained the biocidal characteristics of the modified membrane, as observed by a higher fraction of structurally damaged Pseudomonas fluorescens cells. These results highlight the need to comprehensively assess the time-dependent nature of bactericidal membranes.-
dc.languageeng-
dc.publisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/08927014.asp-
dc.relation.ispartofBiofouling-
dc.rightsThis is an electronic version of an article published in [Biofouling, 2017, v. 33 n. 6, p. 520-529]. [Biofouling] is available online at: https://www.tandfonline.com/doi/full/10.1080/08927014.2017.1331436-
dc.subjectbiofouling-
dc.subjectICP-
dc.subjectleaching-
dc.subjectNanofiltration-
dc.subjectsilver modification-
dc.titleDynamics of silver elution from functionalised antimicrobial nanofiltration membranes-
dc.typeArticle-
dc.identifier.emailHabimana, O: ohabim@hku.hk-
dc.identifier.authorityHabimana, O=rp02169-
dc.description.naturepostprint-
dc.identifier.doi10.1080/08927014.2017.1331436-
dc.identifier.scopuseid_2-s2.0-85020687708-
dc.identifier.hkuros273797-
dc.identifier.volume33-
dc.identifier.issue6-
dc.identifier.spage520-
dc.identifier.epage529-
dc.identifier.isiWOS:000403374000007-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl0892-7014-

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