Publication:
Characterisation of polymeric fouling in membranes bioreactors and the effect of different filtration modes

dc.contributor.author Frimmel, Fritz en_US
dc.contributor.author Chen, Vicki en_US
dc.contributor.author Metzger, Uli en_US
dc.contributor.author Le-Clech, Pierre en_US
dc.contributor.author Stuetz, Richard en_US
dc.date.accessioned 2021-11-25T13:49:32Z
dc.date.available 2021-11-25T13:49:32Z
dc.date.issued 2007 en_US
dc.description.abstract The effects of four different filtration modes (i.e. relaxation, backwash, mixed and continuous) producing the same flux productivity (time average flux) on membrane fouling were investigated in membrane bioreactors (MBRs). The fouling behaviour was found to be strongly dependent on the applied instantaneous flux rather than the filtration modes themselves. The transmembrane pressure (TMP) obtained after 24 h of filtration was dominated by the fouling rates calculated within the first hour of the experiment. After the filtration experiments, the resulting fouling layers were fractionated by rinsing, backwashing and then chemical cleaning, with the foulant removal reflecting the strength of attachment to the membrane. An analysis of the three different fouling layers provided a unique insight into the composition (protein and carbohydrate) and spatial distribution of the particulate and soluble foulants. The upper fouling fraction consists of a porous, loosely bound cake layer with a similar composition to the biomass flocs. The intermediate fraction, which consists of equal parts of soluble molecular products (SMP) and biomass aggregates, features a higher concentration of carbohydrates and possibly plays a significant in the formation of consecutive cake layer. The lower fraction, representing the irreversible fouling fraction and predominantly consisting of SMP, features a relative higher concentration of strongly bound proteins. Whereas the lower and the intermediate fractions showed similar properties for all filtration modes, the upper fraction was influenced by the instantaneous flux. en_US
dc.identifier.issn 0376-7388 en_US
dc.identifier.uri http://hdl.handle.net/1959.4/41187
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 Characterisation of polymeric fouling in membranes bioreactors and the effect of different filtration modes 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.2007.06.016 en_US
unsw.relation.faculty Engineering
unsw.relation.ispartofjournal Journal of Membrane Science en_US
unsw.relation.ispartofpagefrompageto 180-189 en_US
unsw.relation.ispartofvolume 301 en_US
unsw.relation.originalPublicationAffiliation Frimmel, Fritz en_US
unsw.relation.originalPublicationAffiliation Chen, Vicki, Chemical Sciences & Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Metzger, Uli en_US
unsw.relation.originalPublicationAffiliation Le-Clech, Pierre, Chemical Sciences & Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Stuetz, Richard, Civil & Environmental Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.school School of Chemical Engineering *
unsw.relation.school School of Civil and Environmental Engineering *
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