Transparent exopolymer particles (TEP) removal efficiency by a combination of coagulation and ultrafiltration to minimize SWRO membrane fouling

Handle URI:
http://hdl.handle.net/10754/621479
Title:
Transparent exopolymer particles (TEP) removal efficiency by a combination of coagulation and ultrafiltration to minimize SWRO membrane fouling
Authors:
Li, Sheng; Lee, Shang-Tse ( 0000-0002-1407-0523 ) ; Sinha, Shahnawaz; Leiknes, TorOve ( 0000-0003-4046-5622 ) ; Amy, Gary L.; Ghaffour, Noreddine ( 0000-0003-2095-4736 )
Abstract:
This study investigated the impact of coagulation on the transformation between colloidal and particulate transparent exopolymer particles (TEP) in seawater; and the effectiveness of a combined pretreatment consisting of coagulation and UF on minimizing TEP fouling of seawater reverse osmosis (SWRO) membranes. Coagulation with ferric chloride at pH 5 substantially transformed colloidal TEP (0.1–0.4) into particulate TEP (>0.4) leading to a better membrane fouling control. Both 50 and 100 kDa molecular weight cut-off (MWCO) UF membranes removed most of particulate and colloidal TEP without the assistance of coagulation, but coagulation is still necessary for better UF fouling control. The improvement of combined SWRO pretreatment with coagulation and 50 kDa UF membranes was not that much significant compared to UF pretreatment with 50 KDa alone. Therefore, the minimal coagulant dosage for seawater containing TEP should be based on the UF fouling control requirements rather than removal efficiency. © 2016 Elsevier Ltd
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Water Desalination and Reuse Research Center (WDRC)
Citation:
Li S, Lee S-T, Sinha S, Leiknes T, Amy GL, et al. (2016) Transparent exopolymer particles (TEP) removal efficiency by a combination of coagulation and ultrafiltration to minimize SWRO membrane fouling. Water Research 102: 485–493. Available: http://dx.doi.org/10.1016/j.watres.2016.06.055.
Publisher:
Elsevier BV
Journal:
Water Research
Issue Date:
2-Jul-2016
DOI:
10.1016/j.watres.2016.06.055
Type:
Article
ISSN:
0043-1354
Sponsors:
The research reported in this publication was supported by funding from Center Industry Affiliates Program (CIAP) of the Water Desalination and Reuse Center (WDRC) at King Abdullah University of Science and Technology (KAUST).
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.authorLee, Shang-Tseen
dc.contributor.authorSinha, Shahnawazen
dc.contributor.authorLeiknes, TorOveen
dc.contributor.authorAmy, Gary L.en
dc.contributor.authorGhaffour, Noreddineen
dc.date.accessioned2016-11-03T08:30:21Z-
dc.date.available2016-11-03T08:30:21Z-
dc.date.issued2016-07-02en
dc.identifier.citationLi S, Lee S-T, Sinha S, Leiknes T, Amy GL, et al. (2016) Transparent exopolymer particles (TEP) removal efficiency by a combination of coagulation and ultrafiltration to minimize SWRO membrane fouling. Water Research 102: 485–493. Available: http://dx.doi.org/10.1016/j.watres.2016.06.055.en
dc.identifier.issn0043-1354en
dc.identifier.doi10.1016/j.watres.2016.06.055en
dc.identifier.urihttp://hdl.handle.net/10754/621479-
dc.description.abstractThis study investigated the impact of coagulation on the transformation between colloidal and particulate transparent exopolymer particles (TEP) in seawater; and the effectiveness of a combined pretreatment consisting of coagulation and UF on minimizing TEP fouling of seawater reverse osmosis (SWRO) membranes. Coagulation with ferric chloride at pH 5 substantially transformed colloidal TEP (0.1–0.4) into particulate TEP (>0.4) leading to a better membrane fouling control. Both 50 and 100 kDa molecular weight cut-off (MWCO) UF membranes removed most of particulate and colloidal TEP without the assistance of coagulation, but coagulation is still necessary for better UF fouling control. The improvement of combined SWRO pretreatment with coagulation and 50 kDa UF membranes was not that much significant compared to UF pretreatment with 50 KDa alone. Therefore, the minimal coagulant dosage for seawater containing TEP should be based on the UF fouling control requirements rather than removal efficiency. © 2016 Elsevier Ltden
dc.description.sponsorshipThe research reported in this publication was supported by funding from Center Industry Affiliates Program (CIAP) of the Water Desalination and Reuse Center (WDRC) at King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.subjectCoagulationen
dc.titleTransparent exopolymer particles (TEP) removal efficiency by a combination of coagulation and ultrafiltration to minimize SWRO membrane foulingen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalWater Researchen
dc.eprint.versionPost-printen
kaust.authorLi, Shengen
kaust.authorLee, Shang-Tseen
kaust.authorSinha, Shahnawazen
kaust.authorLeiknes, TorOveen
kaust.authorAmy, Gary L.en
kaust.authorGhaffour, Noreddineen
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