Cleaning potential of surfaction of 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 2012
Online Access:	http://journalarticle.ukm.my/5474/ http://journalarticle.ukm.my/5474/ http://journalarticle.ukm.my/5474/1/10%2520Mohd%2520Hafez.pdf

id	ukm-5474
recordtype	eprints
spelling	ukm-54742016-12-14T06:38:33Z http://journalarticle.ukm.my/5474/ Cleaning potential of surfaction of fouled ultrafiltration (UF) membranes Mohd Hafez Mohd Isa, Richard A. Frazier, Paula Jauregi, 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 Universiti Kebangsaan Malaysia 2012-09 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/5474/1/10%2520Mohd%2520Hafez.pdf Mohd Hafez Mohd Isa, and Richard A. Frazier, and Paula Jauregi, (2012) Cleaning potential of surfaction of fouled ultrafiltration (UF) membranes. Sains Malaysiana, 41 (9). pp. 1117-1124. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
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,
spellingShingle	Mohd Hafez Mohd Isa, Richard A. Frazier, Paula Jauregi, Cleaning potential of surfaction of fouled ultrafiltration (UF) membranes
author_facet	Mohd Hafez Mohd Isa, Richard A. Frazier, Paula Jauregi,
author_sort	Mohd Hafez Mohd Isa,
title	Cleaning potential of surfaction of fouled ultrafiltration (UF) membranes
title_short	Cleaning potential of surfaction of fouled ultrafiltration (UF) membranes
title_full	Cleaning potential of surfaction of fouled ultrafiltration (UF) membranes
title_fullStr	Cleaning potential of surfaction of fouled ultrafiltration (UF) membranes
title_full_unstemmed	Cleaning potential of surfaction of fouled ultrafiltration (UF) membranes
title_sort	cleaning potential of surfaction of fouled ultrafiltration (uf) membranes
publisher	Universiti Kebangsaan Malaysia
publishDate	2012
url	http://journalarticle.ukm.my/5474/ http://journalarticle.ukm.my/5474/ http://journalarticle.ukm.my/5474/1/10%2520Mohd%2520Hafez.pdf
first_indexed	2023-09-18T19:44:14Z
last_indexed	2023-09-18T19:44:14Z
_version_	1777405792580796416

Cleaning potential of surfaction of fouled ultrafiltration (UF) membranes

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