Impact of organic fractions identified by SEC and fluorescence EEM on the hydraulic reversibility of ultrafiltration membrane fouling by secondary effluents

Handle URI:
http://hdl.handle.net/10754/561767
Title:
Impact of organic fractions identified by SEC and fluorescence EEM on the hydraulic reversibility of ultrafiltration membrane fouling by secondary effluents
Authors:
Haberkampa, Jens; Ernst, Mathias; Paar, Hendrik; Pallischeck, Daniela; Amy, Gary L.; Jekel, Martin R.
Abstract:
Loss of membrane filtration performance due to organic fouling is still a significant drawback for the application of low-pressure membranes in tertiary wastewater treatment. The present study investigates the relevance of different organic fractions present in secondary effluents in terms of hydraulically reversible and irreversible fouling of hollow-fibre ultrafiltration membranes. A good correlation between the hydraulically reversible filtration resistance and the total organic biopolymer concentration according to size exclusion chromatography (SEC) was observed. Qualitatively biopolymers consist mainly of polysaccharides as well as proteins with high molecular weight. Polysaccharides are retained by the membrane pores, but can be removed by simple UF backwashing. On the other hand, fluorescence excitation-emission matrix (EEM) analysis indicates that the extent of the hydraulically irreversible fouling correlates with the presence of protein-like substances. Removal of protein-like substances by biological slow sand filtration or chemical coagulation results in the significant reduction of the hydraulically irreversible fouling, which is presumably due to proteins in the molecular range of biopolymers. In contrast to the comparatively low sensitivity of colorimetric methods for the analysis of proteins and polysaccharides, the combined application of size exclusion chromatography and fluorescence EEM analysis is a promising tool for the determination of the organic fouling propensity of secondary effluents. ©2011 Desalination Publications. All rights reserved.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division
Publisher:
Taylor & Francis
Journal:
Desalination and Water Treatment
Issue Date:
May-2011
DOI:
10.5004/dwt.2011.1975
Type:
Article
ISSN:
19443994
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorHaberkampa, Jensen
dc.contributor.authorErnst, Mathiasen
dc.contributor.authorPaar, Hendriken
dc.contributor.authorPallischeck, Danielaen
dc.contributor.authorAmy, Gary L.en
dc.contributor.authorJekel, Martin R.en
dc.date.accessioned2015-08-03T09:04:09Zen
dc.date.available2015-08-03T09:04:09Zen
dc.date.issued2011-05en
dc.identifier.issn19443994en
dc.identifier.doi10.5004/dwt.2011.1975en
dc.identifier.urihttp://hdl.handle.net/10754/561767en
dc.description.abstractLoss of membrane filtration performance due to organic fouling is still a significant drawback for the application of low-pressure membranes in tertiary wastewater treatment. The present study investigates the relevance of different organic fractions present in secondary effluents in terms of hydraulically reversible and irreversible fouling of hollow-fibre ultrafiltration membranes. A good correlation between the hydraulically reversible filtration resistance and the total organic biopolymer concentration according to size exclusion chromatography (SEC) was observed. Qualitatively biopolymers consist mainly of polysaccharides as well as proteins with high molecular weight. Polysaccharides are retained by the membrane pores, but can be removed by simple UF backwashing. On the other hand, fluorescence excitation-emission matrix (EEM) analysis indicates that the extent of the hydraulically irreversible fouling correlates with the presence of protein-like substances. Removal of protein-like substances by biological slow sand filtration or chemical coagulation results in the significant reduction of the hydraulically irreversible fouling, which is presumably due to proteins in the molecular range of biopolymers. In contrast to the comparatively low sensitivity of colorimetric methods for the analysis of proteins and polysaccharides, the combined application of size exclusion chromatography and fluorescence EEM analysis is a promising tool for the determination of the organic fouling propensity of secondary effluents. ©2011 Desalination Publications. All rights reserved.en
dc.publisherTaylor & Francisen
dc.subjectEEMen
dc.subjectFluorescence analysisen
dc.subjectLC-OCDen
dc.subjectOrganic foulingen
dc.subjectSize exclusion chromatographyen
dc.subjectTertiary sewage treatmenten
dc.subjectUltrafiltrationen
dc.titleImpact of organic fractions identified by SEC and fluorescence EEM on the hydraulic reversibility of ultrafiltration membrane fouling by secondary effluentsen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalDesalination and Water Treatmenten
dc.contributor.institutionTechnische Universität Berlin, Chair of Water Quality Control, Sekr. KF 4, Str. des 17. Juni 135, D-10623 Berlin, Germanyen
dc.contributor.institutionTechnische Universität Berlin, Centre for Water in Urban Areas, Sekr. KF 4, Str. des 17. Juni 135, D-10623 Berlin, Germanyen
kaust.authorAmy, Gary L.en
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