NOM and TEP fouling of a forward osmosis (FO) membrane: Foulant identification and cleaning

Handle URI:
http://hdl.handle.net/10754/562432
Title:
NOM and TEP fouling of a forward osmosis (FO) membrane: Foulant identification and cleaning
Authors:
Valladares Linares, Rodrigo ( 0000-0003-3790-3249 ) ; Yangali-Quintanilla, Victor; Li, Zhenyu; Amy, Gary L.
Abstract:
The study of forward osmosis (FO) membranes has increased due to the already demonstrated advantages compared to high-energy membrane processes such as reverse osmosis (RO). This research focuses on characterization of the natural organic matter (NOM) fraction causing fouling on the active layer (AL) of a FO membrane in a novel plate and frame module configuration, facing secondary wastewater effluent as a feed solution (FS) and seawater used as a draw solution (DS). In addition, transparent exopolymer particles (TEP) were observed on the support layer (SL) of the membrane in contact with the DS. The NOM fouling layer, after characterizing the water samples and membranes used, was found to be composed of biopolymers and protein-like substances, which adversely affect the flux of water through the FO membrane. However, NOM fouling showed high reversibility, up to 90% when air scouring for 15. min is used as a cleaning technique. The irreversible fouling in this work was found to be 8.2% after chemical cleaning. On the support layer of the membrane, TEP formed clusters clearly identifiable with an optical microscope and a TEP-specific dye. Chemical cleaning with 1% NaOCl for 10. min proved to be the most effective method to remove TEP. © 2012.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Water Desalination and Reuse Research Center; Biological and Environmental Sciences and Engineering (BESE) Division
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
Dec-2012
DOI:
10.1016/j.memsci.2012.07.019
Type:
Article
ISSN:
03767388
Sponsors:
The authors thank Hydration Technology Innovations for providing the FO membranes. The help, assistance and support of the WDRC group is greatly appreciated, for their assistance in completing this research. GS E&C from South Korea is acknowledge for partially funding this research.
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.authorValladares Linares, Rodrigoen
dc.contributor.authorYangali-Quintanilla, Victoren
dc.contributor.authorLi, Zhenyuen
dc.contributor.authorAmy, Gary L.en
dc.date.accessioned2015-08-03T10:38:02Zen
dc.date.available2015-08-03T10:38:02Zen
dc.date.issued2012-12en
dc.identifier.issn03767388en
dc.identifier.doi10.1016/j.memsci.2012.07.019en
dc.identifier.urihttp://hdl.handle.net/10754/562432en
dc.description.abstractThe study of forward osmosis (FO) membranes has increased due to the already demonstrated advantages compared to high-energy membrane processes such as reverse osmosis (RO). This research focuses on characterization of the natural organic matter (NOM) fraction causing fouling on the active layer (AL) of a FO membrane in a novel plate and frame module configuration, facing secondary wastewater effluent as a feed solution (FS) and seawater used as a draw solution (DS). In addition, transparent exopolymer particles (TEP) were observed on the support layer (SL) of the membrane in contact with the DS. The NOM fouling layer, after characterizing the water samples and membranes used, was found to be composed of biopolymers and protein-like substances, which adversely affect the flux of water through the FO membrane. However, NOM fouling showed high reversibility, up to 90% when air scouring for 15. min is used as a cleaning technique. The irreversible fouling in this work was found to be 8.2% after chemical cleaning. On the support layer of the membrane, TEP formed clusters clearly identifiable with an optical microscope and a TEP-specific dye. Chemical cleaning with 1% NaOCl for 10. min proved to be the most effective method to remove TEP. © 2012.en
dc.description.sponsorshipThe authors thank Hydration Technology Innovations for providing the FO membranes. The help, assistance and support of the WDRC group is greatly appreciated, for their assistance in completing this research. GS E&C from South Korea is acknowledge for partially funding this research.en
dc.publisherElsevier BVen
dc.subjectCleaningen
dc.subjectForward osmosisen
dc.subjectFoulingen
dc.subjectNatural organic matteren
dc.subjectTransparent exopolymer particlesen
dc.titleNOM and TEP fouling of a forward osmosis (FO) membrane: Foulant identification and cleaningen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentWater Desalination and Reuse Research Centeren
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalJournal of Membrane Scienceen
dc.contributor.institutionGRUNDFOS Management A/S, Poul Due Jensens Vej 7, DK-8850 Bjerringbro, Denmarken
kaust.authorValladares Linares, Rodrigoen
kaust.authorYangali-Quintanilla, Victoren
kaust.authorLi, Zhenyuen
kaust.authorAmy, Gary L.en
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