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dc.contributor.authorFortunato, Luca
dc.contributor.authorBucs, Szilard
dc.contributor.authorValladares Linares, Rodrigo
dc.contributor.authorCali, Corrado
dc.contributor.authorVrouwenvelder, Johannes S.
dc.contributor.authorLeiknes, TorOve
dc.date.accessioned2016-11-21T13:49:24Z
dc.date.available2016-11-21T13:49:24Z
dc.date.issued2016-11-21
dc.identifier.citationFortunato L, Bucs S, Linares RV, Cali C, Vrouwenvelder JS, et al. (2016) Spatially-resolved in-situ quantification of biofouling using optical coherence tomography (OCT) and 3D image analysis in a spacer filled channel. Journal of Membrane Science. Available: http://dx.doi.org/10.1016/j.memsci.2016.11.052.
dc.identifier.issn0376-7388
dc.identifier.doi10.1016/j.memsci.2016.11.052
dc.identifier.urihttp://hdl.handle.net/10754/621853
dc.description.abstractThe use of optical coherence tomography (OCT) to investigate biomass in membrane systems has increased with time. OCT is able to characterize the biomass in-situ and non-destructively. In this study, a novel approach to process three-dimensional (3D) OCT scans is proposed. The approach allows obtaining spatially-resolved detailed structural biomass information. The 3D biomass reconstruction enables analysis of the biomass only, obtained by subtracting the time zero scan to all images. A 3D time series analysis of biomass development in a spacer filled channel under representative conditions (cross flow velocity) for a spiral wound membrane element was performed. The flow cell was operated for five days with monitoring of ultrafiltration membrane performance: feed channel pressure drop and permeate flux. The biomass development in the flow cell was detected by OCT before a performance decline was observed. Feed channel pressure drop continuously increased with increasing biomass volume, while flux decline was mainly affected in the initial phase of biomass accumulation. The novel OCT imaging approach enabled the assessment of spatial biomass distribution in the flow cell, discriminating the total biomass volume between the membrane, feed spacer and glass window. Biomass accumulation was stronger on the feed spacer during the early stage of biofouling, impacting the feed channel pressure drop stronger than permeate flux.
dc.description.sponsorshipThis study was supported by funding from King Abdullah University of Science and Technology (KAUST).
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0376738816309255
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. 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 Journal of Membrane Science, 21 November 2016. DOI: 10.1016/j.memsci.2016.11.052
dc.subjectOCT
dc.subjectfeed spacer
dc.subjectfouling
dc.subjectultrafiltration
dc.subjectbiofilm
dc.titleSpatially-resolved in-situ quantification of biofouling using optical coherence tomography (OCT) and 3D image analysis in a spacer filled channel
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.identifier.journalJournal of Membrane Science
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Biotechnology, Faculty of Applied Sciences, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
dc.contributor.institutionWetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, The Netherlands
kaust.personFortunato, Luca
kaust.personBucs, Szilard
kaust.personValladares Linares, Rodrigo
kaust.personCali, Corrado
kaust.personVrouwenvelder, Johannes S.
kaust.personLeiknes, TorOve
refterms.dateFOA2018-11-21T00:00:00Z
dc.date.published-online2016-11-21
dc.date.published-print2017-02


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