Early non-destructive biofouling detection and spatial distribution: Application of oxygen sensing optodes

Handle URI:
http://hdl.handle.net/10754/557009
Title:
Early non-destructive biofouling detection and spatial distribution: Application of oxygen sensing optodes
Authors:
Farhat, N.M.; Staal, M.; Siddiqui, A.; Borisov, S.M.; Bucs, Sz.S.; Vrouwenvelder, Johannes S. ( 0000-0003-2668-2057 )
Abstract:
Biofouling is a serious problem in reverse osmosis/nanofiltration (RO/NF) applications, reducing membrane performance. Early detection of biofouling plays an essential role in an adequate anti-biofouling strategy. Presently, fouling of membrane filtration systems is mainly determined by measuring changes in pressure drop, which is not exclusively linked to biofouling. Non-destructive imaging of oxygen concentrations (i) is specific for biological activity of biofilms and (ii) may enable earlier detection of biofilm accumulation than pressure drop. The objective of this study was to test whether transparent luminescent planar O2 optodes, in combination with a simple imaging system, can be used for early non-destructive biofouling detection. This biofouling detection is done by mapping the two-dimensional distribution of O2 concentrations and O2 decrease rates inside a membrane fouling simulator (MFS). Results show that at an early stage, biofouling development was detected by the oxygen sensing optodes while no significant increase in pressure drop was yet observed. Additionally, optodes could detect spatial heterogeneities in biofouling distribution at a micro scale. Biofilm development started mainly at the feed spacer crossings. The spatial and quantitative information on biological activity will lead to better understanding of the biofouling processes, contributing to the development of more effective biofouling control strategies.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Early non-destructive biofouling detection and spatial distribution: Application of oxygen sensing optodes 2015 Water Research
Publisher:
Elsevier BV
Journal:
Water Research
Issue Date:
11-Jun-2015
DOI:
10.1016/j.watres.2015.06.015
Type:
Article
ISSN:
00431354
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0043135415300658
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorFarhat, N.M.en
dc.contributor.authorStaal, M.en
dc.contributor.authorSiddiqui, A.en
dc.contributor.authorBorisov, S.M.en
dc.contributor.authorBucs, Sz.S.en
dc.contributor.authorVrouwenvelder, Johannes S.en
dc.date.accessioned2015-06-17T13:50:02Zen
dc.date.available2015-06-17T13:50:02Zen
dc.date.issued2015-06-11en
dc.identifier.citationEarly non-destructive biofouling detection and spatial distribution: Application of oxygen sensing optodes 2015 Water Researchen
dc.identifier.issn00431354en
dc.identifier.doi10.1016/j.watres.2015.06.015en
dc.identifier.urihttp://hdl.handle.net/10754/557009en
dc.description.abstractBiofouling is a serious problem in reverse osmosis/nanofiltration (RO/NF) applications, reducing membrane performance. Early detection of biofouling plays an essential role in an adequate anti-biofouling strategy. Presently, fouling of membrane filtration systems is mainly determined by measuring changes in pressure drop, which is not exclusively linked to biofouling. Non-destructive imaging of oxygen concentrations (i) is specific for biological activity of biofilms and (ii) may enable earlier detection of biofilm accumulation than pressure drop. The objective of this study was to test whether transparent luminescent planar O2 optodes, in combination with a simple imaging system, can be used for early non-destructive biofouling detection. This biofouling detection is done by mapping the two-dimensional distribution of O2 concentrations and O2 decrease rates inside a membrane fouling simulator (MFS). Results show that at an early stage, biofouling development was detected by the oxygen sensing optodes while no significant increase in pressure drop was yet observed. Additionally, optodes could detect spatial heterogeneities in biofouling distribution at a micro scale. Biofilm development started mainly at the feed spacer crossings. The spatial and quantitative information on biological activity will lead to better understanding of the biofouling processes, contributing to the development of more effective biofouling control strategies.en
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0043135415300658en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Water Research. 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 Water Research, 11 June 2015. DOI: 10.1016/j.watres.2015.06.015en
dc.subjectearly warningen
dc.subjectsensoren
dc.subjectimagingen
dc.subjectwater treatmenten
dc.subjectdesalinationen
dc.titleEarly non-destructive biofouling detection and spatial distribution: Application of oxygen sensing optodesen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalWater Researchen
dc.eprint.versionPost-printen
dc.contributor.institutionGraz University of Technology, Institute of Analytical Chemistry and Food Chemistry, Stremayrgasse 9, 8010 Graz, Austriaen
dc.contributor.institutionDelft University of Technology, Faculty of Applied Sciences, Department of Biotechnology Julianalaan 67, 2628 BC Delft, The Netherlandsen
dc.contributor.institutionWetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlandsen
kaust.authorVrouwenvelder, Johannes S.en
kaust.authorFarhat, Nadiaen
kaust.authorStaal, M.en
kaust.authorSiddiqui, A.en
kaust.authorBucs, Szilarden
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