Evaluation of potential particulate/colloidal TEP foulants on a pilot scale SWRO desalination study

Handle URI:
http://hdl.handle.net/10754/596504
Title:
Evaluation of potential particulate/colloidal TEP foulants on a pilot scale SWRO desalination study
Authors:
Li, Sheng ( 0000-0002-9921-4951 ) ; Sinha, Shahnawaz; Leiknes, TorOve ( 0000-0003-4046-5622 ) ; Amy, Gary L.; Ghaffour, Noreddine ( 0000-0003-2095-4736 )
Abstract:
This pilot study investigated the variation of potential foulants and different fractions of transparent exopolymer particles (TEP), along the treatment scheme under different conditions. The objectives are to provide a comprehensive understanding on which fraction of TEP is more problematic in seawater reverse osmosis (SWRO) fouling, and which pretreatment can better reduce the concentration of TEP. Results showed that TEP deposited on the RO membranes, and the extent of RO fouling increased with the increase of TEP concentration in RO feed water. More TEP was produced in water after chlorination, probably because of the breakdown of bacterial cells and thus the release of internal exopolymers. Moreover, the cartridge filters could behave as an incubator for the regrowth of bacteria deactivated by chlorination and a spot for potential foulant (bacterial TEP) production, and thus enhance the RO membranes fouling. The presence of residual iron and addition of phosphate based antiscalant may also contribute to the higher biofouling of RO membranes. This pilot study provided an opportunity to identify the TEP related issues under different operational conditions in RO desalination of Red Sea water.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division
Citation:
Evaluation of potential particulate/colloidal TEP foulants on a pilot scale SWRO desalination study 2016 Desalination
Publisher:
Elsevier BV
Journal:
Desalination
Issue Date:
21-Jan-2016
DOI:
10.1016/j.desal.2016.01.017
Type:
Article
ISSN:
00119164
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0011916416300194
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.authorLi, Shengen
dc.contributor.authorSinha, Shahnawazen
dc.contributor.authorLeiknes, TorOveen
dc.contributor.authorAmy, Gary L.en
dc.contributor.authorGhaffour, Noreddineen
dc.date.accessioned2016-02-17T12:51:48Zen
dc.date.available2016-02-17T12:51:48Zen
dc.date.issued2016-01-21en
dc.identifier.citationEvaluation of potential particulate/colloidal TEP foulants on a pilot scale SWRO desalination study 2016 Desalinationen
dc.identifier.issn00119164en
dc.identifier.doi10.1016/j.desal.2016.01.017en
dc.identifier.urihttp://hdl.handle.net/10754/596504en
dc.description.abstractThis pilot study investigated the variation of potential foulants and different fractions of transparent exopolymer particles (TEP), along the treatment scheme under different conditions. The objectives are to provide a comprehensive understanding on which fraction of TEP is more problematic in seawater reverse osmosis (SWRO) fouling, and which pretreatment can better reduce the concentration of TEP. Results showed that TEP deposited on the RO membranes, and the extent of RO fouling increased with the increase of TEP concentration in RO feed water. More TEP was produced in water after chlorination, probably because of the breakdown of bacterial cells and thus the release of internal exopolymers. Moreover, the cartridge filters could behave as an incubator for the regrowth of bacteria deactivated by chlorination and a spot for potential foulant (bacterial TEP) production, and thus enhance the RO membranes fouling. The presence of residual iron and addition of phosphate based antiscalant may also contribute to the higher biofouling of RO membranes. This pilot study provided an opportunity to identify the TEP related issues under different operational conditions in RO desalination of Red Sea water.en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0011916416300194en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Desalination. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Desalination, 21 January 2016. DOI: 10.1016/j.desal.2016.01.017en
dc.subjectTEPen
dc.subjectSWROen
dc.subjectFoulingen
dc.subjectChlorinationen
dc.subjectCartridge filtersen
dc.subjectResidual ironen
dc.titleEvaluation of potential particulate/colloidal TEP foulants on a pilot scale SWRO desalination studyen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalDesalinationen
dc.eprint.versionPost-printen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorLi, Shengen
kaust.authorSinha, Shahnawazen
kaust.authorLeiknes, TorOveen
kaust.authorAmy, Gary L.en
kaust.authorGhaffour, Noreddineen
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