Publication:
Visualisation of polysaccharide fouling on microporous membrane using different characterisation techniques

dc.contributor.author Stuetz, Richard en_US
dc.contributor.author Chen, Vicki en_US
dc.contributor.author Le-Clech, Pierre en_US
dc.contributor.author Marselina, Yulita en_US
dc.contributor.author Ye, Yun en_US
dc.date.accessioned 2021-11-25T13:49:31Z
dc.date.available 2021-11-25T13:49:31Z
dc.date.issued 2007 en_US
dc.description.abstract Although many studies assessed fouling behaviour in microporous membrane processes like membrane bioreactors (MBRs), in situ or direct observation of the fouling layer has not yet been possible. The observation of the fouling layer resulting from the filtration of model solutions allowed better understanding of MBR fouling intensity and mechanisms. In this study, alginate has been used as a model for polysaccharide (one of the main foulants in MBRs). Three visualisation techniques, confocal laser scanning microscopy (CLSM), environmental scanning electron microscopy (ESEM), and direct observation (DO) have been tested to observe the alginate fouling. The work presented in this paper revealed the advantages and limitations of each technique used for this specific application. Although no coating is required for this technique, ESEM allowed distinct non-destructive observation of clean membrane. However, the lack of structure in the alginate fouling layer limited the use of this technique for fouled membranes. While CLSM requires the use of expensive fluorescent markers, DO appeared as the most promising technique for direct and in situ observation of MBR fouling. DO of alginate/bentonite and alginate/bacteria solutions revealed the creation of a well-structured dual fouling system (bentonite-concentrated layer of 50 μm embedded and covered by a concentration polarisation of alginate greater than 240 μm) on the surface of hollow fibre membrane. en_US
dc.identifier.issn 0376-7388 en_US
dc.identifier.uri http://hdl.handle.net/1959.4/41186
dc.language English
dc.language.iso EN en_US
dc.rights CC BY-NC-ND 3.0 en_US
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/3.0/au/ en_US
dc.source Legacy MARC en_US
dc.title Visualisation of polysaccharide fouling on microporous membrane using different characterisation techniques en_US
dc.type Journal Article en
dcterms.accessRights metadata only access
dspace.entity.type Publication en_US
unsw.accessRights.uri http://purl.org/coar/access_right/c_14cb
unsw.identifier.doiPublisher http://dx.doi.org/10.1016/j.memsci.2006.12.012 en_US
unsw.relation.faculty Engineering
unsw.relation.ispartofjournal Journal of Membrane Science en_US
unsw.relation.ispartofpagefrompageto 36-45 en_US
unsw.relation.ispartofvolume 290 en_US
unsw.relation.originalPublicationAffiliation Stuetz, Richard, Civil & Environmental Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Chen, Vicki, Chemical Sciences & Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Le-Clech, Pierre, Chemical Sciences & Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Marselina, Yulita, Chemical Sciences & Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Ye, Yun, Chemical Sciences & Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.school School of Civil and Environmental Engineering *
unsw.relation.school School of Chemical Engineering *
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