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dc.contributor.authorBucs, Szilard
dc.contributor.authorRadu, Andrea I.
dc.contributor.authorLavric, Vasile
dc.contributor.authorVrouwenvelder, Johannes S.
dc.contributor.authorPicioreanu, Cristian
dc.date.accessioned2015-08-03T11:54:40Z
dc.date.available2015-08-03T11:54:40Z
dc.date.issued2014-06
dc.identifier.citationBucs, S. S., Radu, A. I., Lavric, V., Vrouwenvelder, J. S., & Picioreanu, C. (2014). Effect of different commercial feed spacers on biofouling of reverse osmosis membrane systems: A numerical study. Desalination, 343, 26–37. doi:10.1016/j.desal.2013.11.007
dc.identifier.issn00119164
dc.identifier.doi10.1016/j.desal.2013.11.007
dc.identifier.urihttp://hdl.handle.net/10754/563568
dc.description.abstractFeed spacers and hydrodynamics have been found relevant for the impact of biofouling on performance in reverse osmosis (RO) and nanofiltration (NF) membrane systems.The objectives of this study on biofouling development were to determine the impact of (i) linear flow velocity and bacterial cell load, (ii) biomass location and (iii) various feed spacer geometries as applied in practice as well as a modified geometry spacer.A three-dimensional mathematical model for biofouling of feed spacer channels including hydrodynamics, solute mass transport and biofilm formation was developed in COMSOL Multiphysics and MATLAB software.Results of this study indicate that the feed channel pressure drop increase caused by biofilm formation can be reduced by using thicker and/or modified feed spacer geometry and/or a lower flow rate in the feed channel. The increase of feed channel pressure drop by biomass accumulation is shown to be strongly influenced by the location of biomass. Results of numerical simulations are in satisfactory agreement with experimental data, indicating that this micro-scale mechanistic model is representative for practice. The developed model can help to understand better the biofouling process of spiral-wound RO and NF membrane systems and to develop strategies to reduce and control biofouling. © 2013 Elsevier B.V.
dc.description.sponsorshipThis work was performed at King Abdullah University of Science and Technology (KAUST) and Delft University of Technology. The preparation of this article was supported by funds of KAUST (www.kaustedu. sa), Evides waterbedrijf (www.evides.nl), Wetsus, Centre of Excellence for Sustainable Water Technology (www.wetsus.nl) and by the Sectorial Operational Programme "Human Resources Development 2007-2013" of the Romanian Ministry of Labour, Family and Social Protection through the Financial Agreement POSDRU/88/1.5/8/60203. Wetsus is funded by the Dutch Ministry of Economic Affairs, the European Union European Regional Development Fund, the Province of Fryslan, the city of Leeuwarden and by the EZ-KOMPAS Program of the "Samenwerkingsverband Noord-Nederland". The authors thank the participants of the research theme "Biofouling" and Evides waterbedrijf for the fruitful discussions.
dc.publisherElsevier BV
dc.subject3-d mechanistic model
dc.subjectBiofouling
dc.subjectDesalination
dc.subjectDrinking water
dc.subjectFeed spacer
dc.titleEffect of different commercial feed spacers on biofouling of reverse osmosis membrane systems: A numerical study
dc.typeArticle
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.identifier.journalDesalination
dc.contributor.institutionUniversity Politehnica of Bucharest, Faculty of Applied Chemistry and Materials Science, Chemical and Biochemical Engineering Department, RO-011061 Bucharest, Romania
dc.contributor.institutionDelft University of Technology, Faculty of Applied Sciences, Department of Biotechnology, Julianalaan 67, 2628BC Delft, Netherlands
dc.contributor.institutionWetsus, Centre of Excellence for Sustainable Water Technology, Agora 1, PO Box 1113, 8900 CC Leeuwarden, Netherlands
kaust.personVrouwenvelder, Johannes S.
kaust.personBucs, Szilard


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