Contribution of different effluent organic matter fractions to membrane fouling in ultrafiltration of treated domestic wastewater

Handle URI:
http://hdl.handle.net/10754/562451
Title:
Contribution of different effluent organic matter fractions to membrane fouling in ultrafiltration of treated domestic wastewater
Authors:
Zheng, Xing; Croue, Jean-Philippe
Abstract:
In the present work, effluent organic matter (EfOM) in treated domestic wastewater was separated into hydrophobic neutrals, colloids, hydrophobic acids, transphilic acids and neutrals and hydrophilic compounds. Their contribution to dissolved organic carbon (DOC) was identified. Further characterization was conducted with respect to molecular size and hydrophobicity. Each isolated fraction was dosed into salt solution to identify its fouling potential in ultrafiltration (UF) using a hydrophilized polyethersulfone membrane. The results show that each kind of EfOM leads to irreversible fouling. At similar delivered DOC load to the membrane, colloids present the highest fouling effect in terms of both reversible and irreversible fouling. The hydrophobic organics show much lower reversibility than the biopolymers present. However, as they are of much smaller size than the membrane pore opening, they cannot lead to such severe fouling as biopolymers do. In all of the isolated fractions, hydrophilics show the lowest fouling potential. For either colloids or hydrophobic substances, increasing their content in feedwater leads to worse fouling. The co-effect between biopolymers and other EfOM fractions has also been identified as one of the mechanisms contributing to UF fouling in filtering EfOM-containing waters. © IWA Publishing 2012.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Water Desalination & Reuse Research Cntr; Biological and Environmental Sciences and Engineering (BESE) Division
Publisher:
IWA Publishing
Journal:
Journal of Water Reuse and Desalination
Issue Date:
Dec-2012
DOI:
10.2166/wrd.2012.021
Type:
Article
ISSN:
22201319
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.authorZheng, Xingen
dc.contributor.authorCroue, Jean-Philippeen
dc.date.accessioned2015-08-03T10:38:40Zen
dc.date.available2015-08-03T10:38:40Zen
dc.date.issued2012-12en
dc.identifier.issn22201319en
dc.identifier.doi10.2166/wrd.2012.021en
dc.identifier.urihttp://hdl.handle.net/10754/562451en
dc.description.abstractIn the present work, effluent organic matter (EfOM) in treated domestic wastewater was separated into hydrophobic neutrals, colloids, hydrophobic acids, transphilic acids and neutrals and hydrophilic compounds. Their contribution to dissolved organic carbon (DOC) was identified. Further characterization was conducted with respect to molecular size and hydrophobicity. Each isolated fraction was dosed into salt solution to identify its fouling potential in ultrafiltration (UF) using a hydrophilized polyethersulfone membrane. The results show that each kind of EfOM leads to irreversible fouling. At similar delivered DOC load to the membrane, colloids present the highest fouling effect in terms of both reversible and irreversible fouling. The hydrophobic organics show much lower reversibility than the biopolymers present. However, as they are of much smaller size than the membrane pore opening, they cannot lead to such severe fouling as biopolymers do. In all of the isolated fractions, hydrophilics show the lowest fouling potential. For either colloids or hydrophobic substances, increasing their content in feedwater leads to worse fouling. The co-effect between biopolymers and other EfOM fractions has also been identified as one of the mechanisms contributing to UF fouling in filtering EfOM-containing waters. © IWA Publishing 2012.en
dc.publisherIWA Publishingen
dc.subjectBiopolymersen
dc.subjectEffluent organic matteren
dc.subjectFoulingen
dc.subjectFractionationen
dc.subjectHumic substancesen
dc.subjectUltrafiltrationen
dc.titleContribution of different effluent organic matter fractions to membrane fouling in ultrafiltration of treated domestic wastewateren
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalJournal of Water Reuse and Desalinationen
kaust.authorZheng, Xingen
kaust.authorCroue, Jean-Philippeen
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