In-situ assessment of biofilm formation in submerged membrane system using optical coherence tomography and computational fluid dynamics

Handle URI:
http://hdl.handle.net/10754/622302
Title:
In-situ assessment of biofilm formation in submerged membrane system using optical coherence tomography and computational fluid dynamics
Authors:
Fortunato, Luca ( 0000-0002-0969-1296 ) ; Qamar, Adnan; Wang, Yiran ( 0000-0002-9062-4751 ) ; Jeong, Sanghyun; Leiknes, TorOve ( 0000-0003-4046-5622 )
Abstract:
This paper introduces a novel approach to study the biofouling development on gravity driven submerged membrane bioreactor (SMBR). The on-line monitoring of biofilm formation on a flat sheet membrane was conducted non-destructively using optical coherence tomography (OCT), allowing the in-situ investigation of the biofilm structure for 43 d. The OCT enabled to obtain a time-lapse of biofilm development on the membrane under the continuous operation. Acquired real-time information on the biofilm structure related to the change in the flux profile confirming the successful monitoring of the dynamic evolution of the biofouling layer. Four different phases were observed linking the permeate flux with the change of biofilm morphology. In particular, a stable flux of 2.1±0.1 L/m2 h was achieved with the achievement of steady biofilm morphology after 30 d of operation. Biofilm descriptors, such as thickness, biofilm area, macro-porosity and roughness (absolute and relative), were calculated for each OCT acquired scans. Interestingly, relative roughness was correlated with the flux decrease. Furthermore, the precise biofilm morphology obtained from the OCT scans was used in computational fluid dynamics (CFD) simulation to better understand the role of biofilm structure on the filtration mechanism. © 2016 Elsevier B.V.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Water Desalination and Reuse Research Center (WDRC)
Citation:
Fortunato L, Qamar A, Wang Y, Jeong S, Leiknes T (2017) In-situ assessment of biofilm formation in submerged membrane system using optical coherence tomography and computational fluid dynamics. Journal of Membrane Science 521: 84–94. Available: http://dx.doi.org/10.1016/j.memsci.2016.09.004.
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
9-Sep-2016
DOI:
10.1016/j.memsci.2016.09.004
Type:
Article
ISSN:
0376-7388
Sponsors:
This study was supported by funding from King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://www.sciencedirect.com/science/article/pii/S037673881631506X
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.authorFortunato, Lucaen
dc.contributor.authorQamar, Adnanen
dc.contributor.authorWang, Yiranen
dc.contributor.authorJeong, Sanghyunen
dc.contributor.authorLeiknes, TorOveen
dc.date.accessioned2017-01-02T09:08:24Z-
dc.date.available2017-01-02T09:08:24Z-
dc.date.issued2016-09-09en
dc.identifier.citationFortunato L, Qamar A, Wang Y, Jeong S, Leiknes T (2017) In-situ assessment of biofilm formation in submerged membrane system using optical coherence tomography and computational fluid dynamics. Journal of Membrane Science 521: 84–94. Available: http://dx.doi.org/10.1016/j.memsci.2016.09.004.en
dc.identifier.issn0376-7388en
dc.identifier.doi10.1016/j.memsci.2016.09.004en
dc.identifier.urihttp://hdl.handle.net/10754/622302-
dc.description.abstractThis paper introduces a novel approach to study the biofouling development on gravity driven submerged membrane bioreactor (SMBR). The on-line monitoring of biofilm formation on a flat sheet membrane was conducted non-destructively using optical coherence tomography (OCT), allowing the in-situ investigation of the biofilm structure for 43 d. The OCT enabled to obtain a time-lapse of biofilm development on the membrane under the continuous operation. Acquired real-time information on the biofilm structure related to the change in the flux profile confirming the successful monitoring of the dynamic evolution of the biofouling layer. Four different phases were observed linking the permeate flux with the change of biofilm morphology. In particular, a stable flux of 2.1±0.1 L/m2 h was achieved with the achievement of steady biofilm morphology after 30 d of operation. Biofilm descriptors, such as thickness, biofilm area, macro-porosity and roughness (absolute and relative), were calculated for each OCT acquired scans. Interestingly, relative roughness was correlated with the flux decrease. Furthermore, the precise biofilm morphology obtained from the OCT scans was used in computational fluid dynamics (CFD) simulation to better understand the role of biofilm structure on the filtration mechanism. © 2016 Elsevier B.V.en
dc.description.sponsorshipThis study was supported by funding from King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S037673881631506Xen
dc.subjectBiofoulingen
dc.subjectComputational fluid dynamicsen
dc.subjectGravity driven membrane bioreactoren
dc.subjectNon-destructive monitoringen
dc.subjectOptical coherence tomographyen
dc.titleIn-situ assessment of biofilm formation in submerged membrane system using optical coherence tomography and computational fluid dynamicsen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalJournal of Membrane Scienceen
kaust.authorFortunato, Lucaen
kaust.authorQamar, Adnanen
kaust.authorWang, Yiranen
kaust.authorJeong, Sanghyunen
kaust.authorLeiknes, TorOveen
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