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Cleaning Potential of Surfactin on Fouled Ultrafiltration (UF) Membranes

Biosurfactants are microbially produced surface active agents that offer better biodegradability and lower toxicity than chemically synthesized surfactants because of their biogenetic origin. One of the most surface-active biosurfactants known is surfactin, a cyclic lipopeptide produced by various s...

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Main Authors: Mohd Hafez, Mohd Isa,, Richard A., Frazier,, Paula, Jauregi,
Format: Article
Language:English
Published: Universiti Kebangsaan Malaysia 2015
Subjects:
Critical Micelle Concentration (CMC)
hydrodynamic diameter
surface tension measurements
surfactin
ultrafiltration (UF)
Online Access:http://ddms.usim.edu.my/handle/123456789/8084
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spelling my.usim-80842017-02-23T04:41:36Z Cleaning Potential of Surfactin on Fouled Ultrafiltration (UF) Membranes Mohd Hafez, Mohd Isa, Richard A., Frazier, Paula, Jauregi, Critical Micelle Concentration (CMC) hydrodynamic diameter surface tension measurements surfactin ultrafiltration (UF) Biosurfactants are microbially produced surface active agents that offer better biodegradability and lower toxicity than chemically synthesized surfactants because of their biogenetic origin. One of the most surface-active biosurfactants known is surfactin, a cyclic lipopeptide produced by various strains of Bacillus subtilis. In this study, the cleaning potential of surfactin on ultrafiltration (UF) membranes fouled with BSA was studied using centrifugal UF devices of 50 kDa and 100 kDa MWCO polyethersulfone (PES) membranes. Mechanisms of bovine serum albumin (BSA) displacement by surfactin on fouled UF membranes were studied using dynamic light scattering (DLS) technique and surface tension measurements. Hydrodynamic diameter and surface tension measurements of BSA-surfactin mixtures showed that the surfactin was efficient in displacing BSA fouled on UF membranes due to strong electrostatic repulsive interactions involved at pH8.5. This study demonstrated that surfactin can be used to effectively clean fouled UF membranes. 2015-05-18T02:28:18Z 2015-05-18T02:28:18Z 2012 Article 0126-6039 http://ddms.usim.edu.my/handle/123456789/8084 en Universiti Kebangsaan Malaysia
institution Universiti Sains Islam Malaysia
building USIM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universit Sains Islam i Malaysia
content_source USIM Institutional Repository
url_provider http://ddms.usim.edu.my/
language English
topic Critical Micelle Concentration (CMC)
hydrodynamic diameter
surface tension measurements
surfactin
ultrafiltration (UF)
spellingShingle Critical Micelle Concentration (CMC)
hydrodynamic diameter
surface tension measurements
surfactin
ultrafiltration (UF)
Mohd Hafez, Mohd Isa,
Richard A., Frazier,
Paula, Jauregi,
Cleaning Potential of Surfactin on Fouled Ultrafiltration (UF) Membranes
description Biosurfactants are microbially produced surface active agents that offer better biodegradability and lower toxicity than chemically synthesized surfactants because of their biogenetic origin. One of the most surface-active biosurfactants known is surfactin, a cyclic lipopeptide produced by various strains of Bacillus subtilis. In this study, the cleaning potential of surfactin on ultrafiltration (UF) membranes fouled with BSA was studied using centrifugal UF devices of 50 kDa and 100 kDa MWCO polyethersulfone (PES) membranes. Mechanisms of bovine serum albumin (BSA) displacement by surfactin on fouled UF membranes were studied using dynamic light scattering (DLS) technique and surface tension measurements. Hydrodynamic diameter and surface tension measurements of BSA-surfactin mixtures showed that the surfactin was efficient in displacing BSA fouled on UF membranes due to strong electrostatic repulsive interactions involved at pH8.5. This study demonstrated that surfactin can be used to effectively clean fouled UF membranes.
format Article
author Mohd Hafez, Mohd Isa,
Richard A., Frazier,
Paula, Jauregi,
author_facet Mohd Hafez, Mohd Isa,
Richard A., Frazier,
Paula, Jauregi,
author_sort Mohd Hafez, Mohd Isa,
title Cleaning Potential of Surfactin on Fouled Ultrafiltration (UF) Membranes
title_short Cleaning Potential of Surfactin on Fouled Ultrafiltration (UF) Membranes
title_full Cleaning Potential of Surfactin on Fouled Ultrafiltration (UF) Membranes
title_fullStr Cleaning Potential of Surfactin on Fouled Ultrafiltration (UF) Membranes
title_full_unstemmed Cleaning Potential of Surfactin on Fouled Ultrafiltration (UF) Membranes
title_sort cleaning potential of surfactin on fouled ultrafiltration (uf) membranes
publisher Universiti Kebangsaan Malaysia
publishDate 2015
url http://ddms.usim.edu.my/handle/123456789/8084
_version_ 1645152337597038592
score 13.211869

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