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Polyethersulfone (PES)-silver composite UF membrane: effect of silver loading and PVP molecular weight on membrane morphology and antibacterial activity

Polyethersulfone–silver composite membranes were fabricated via a simple phase inversion method by using silver nitrate (AgNO3) as an antibacterial agent and polyvinylpyrollidone (PVP) of molecular weight 10,000, 40,000 and 360,000 Da as dispersant in the dope formulation. The effect of AgNO3 loadin...

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Main Authors: Ismail, Ahmad Fauzi, Aziz, Madzlan, Basri, H.
Format: Article
Published: Elsevier B.V. 2011
Subjects:
Q Science (General)
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/29365/
http://dx.doi.org/10.1016/j.desal.2010.11.010
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spelling my.utm.293652022-01-31T08:41:15Z http://eprints.utm.my/id/eprint/29365/ Polyethersulfone (PES)-silver composite UF membrane: effect of silver loading and PVP molecular weight on membrane morphology and antibacterial activity Ismail, Ahmad Fauzi Aziz, Madzlan Basri, H. Q Science (General) TP Chemical technology Polyethersulfone–silver composite membranes were fabricated via a simple phase inversion method by using silver nitrate (AgNO3) as an antibacterial agent and polyvinylpyrollidone (PVP) of molecular weight 10,000, 40,000 and 360,000 Da as dispersant in the dope formulation. The effect of AgNO3 loading on the resulting membrane was studied using field emission scanning electron microscope (FESEM), energy dispersive X-ray (EDX) and X-ray photoelectron spectroscopy (XPS) techniques. The silver loss during fabrication and pure water filtration was measured using inductive-coupled plasma mass spectrometer (ICP-MS). From XPS and EDX examinations, it was observed that the resulting membrane prepared from 2 wt.% AgNO3 and PVP of 360,000 Da exhibited high concentration of Ag mainly due to the high Ag-particle entrapment in the membrane structure. The uniform distribution of Ag particles has contributed significantly to 100% inhibition against Escherichia coli (E. coli) growth within 24 h incubation. In addition, the results of pure water filtration test showed minimum silver loss during operation, indicating better stability of membrane produced in terms of Ag-entrapment in membrane structure. Based on the findings, it can be concluded that PES–silver composite membrane with PVP of 360,000 MW offers huge potential membrane for bacteria removal and disinfection. Elsevier B.V. 2011-06-01 Article PeerReviewed Ismail, Ahmad Fauzi and Aziz, Madzlan and Basri, H. (2011) Polyethersulfone (PES)-silver composite UF membrane: effect of silver loading and PVP molecular weight on membrane morphology and antibacterial activity. Desalination, 273 (1). pp. 72-80. ISSN 0011-9164 http://dx.doi.org/10.1016/j.desal.2010.11.010 DOI:10.1016/j.desal.2010.11.010
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic Q Science (General)
TP Chemical technology
spellingShingle Q Science (General)
TP Chemical technology
Ismail, Ahmad Fauzi
Aziz, Madzlan
Basri, H.
Polyethersulfone (PES)-silver composite UF membrane: effect of silver loading and PVP molecular weight on membrane morphology and antibacterial activity
description Polyethersulfone–silver composite membranes were fabricated via a simple phase inversion method by using silver nitrate (AgNO3) as an antibacterial agent and polyvinylpyrollidone (PVP) of molecular weight 10,000, 40,000 and 360,000 Da as dispersant in the dope formulation. The effect of AgNO3 loading on the resulting membrane was studied using field emission scanning electron microscope (FESEM), energy dispersive X-ray (EDX) and X-ray photoelectron spectroscopy (XPS) techniques. The silver loss during fabrication and pure water filtration was measured using inductive-coupled plasma mass spectrometer (ICP-MS). From XPS and EDX examinations, it was observed that the resulting membrane prepared from 2 wt.% AgNO3 and PVP of 360,000 Da exhibited high concentration of Ag mainly due to the high Ag-particle entrapment in the membrane structure. The uniform distribution of Ag particles has contributed significantly to 100% inhibition against Escherichia coli (E. coli) growth within 24 h incubation. In addition, the results of pure water filtration test showed minimum silver loss during operation, indicating better stability of membrane produced in terms of Ag-entrapment in membrane structure. Based on the findings, it can be concluded that PES–silver composite membrane with PVP of 360,000 MW offers huge potential membrane for bacteria removal and disinfection.
format Article
author Ismail, Ahmad Fauzi
Aziz, Madzlan
Basri, H.
author_facet Ismail, Ahmad Fauzi
Aziz, Madzlan
Basri, H.
author_sort Ismail, Ahmad Fauzi
title Polyethersulfone (PES)-silver composite UF membrane: effect of silver loading and PVP molecular weight on membrane morphology and antibacterial activity
title_short Polyethersulfone (PES)-silver composite UF membrane: effect of silver loading and PVP molecular weight on membrane morphology and antibacterial activity
title_full Polyethersulfone (PES)-silver composite UF membrane: effect of silver loading and PVP molecular weight on membrane morphology and antibacterial activity
title_fullStr Polyethersulfone (PES)-silver composite UF membrane: effect of silver loading and PVP molecular weight on membrane morphology and antibacterial activity
title_full_unstemmed Polyethersulfone (PES)-silver composite UF membrane: effect of silver loading and PVP molecular weight on membrane morphology and antibacterial activity
title_sort polyethersulfone (pes)-silver composite uf membrane: effect of silver loading and pvp molecular weight on membrane morphology and antibacterial activity
publisher Elsevier B.V.
publishDate 2011
url http://eprints.utm.my/id/eprint/29365/
http://dx.doi.org/10.1016/j.desal.2010.11.010
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score 13.211869

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