Predicting the impact of feed spacer modification on biofouling by hydraulic characterization and biofouling studies in membrane fouling simulators

Handle URI:
http://hdl.handle.net/10754/622329
Title:
Predicting the impact of feed spacer modification on biofouling by hydraulic characterization and biofouling studies in membrane fouling simulators
Authors:
Siddiqui, Amber; Lehmann, S.; Bucs, Szilard; Fresquet, M.; Fel, L.; Prest, E.I.E.C.; Ogier, J.; Schellenberg, C.; van Loosdrecht, M.C.M.; Kruithof, J.C.; Vrouwenvelder, Johannes S. ( 0000-0003-2668-2057 )
Abstract:
Feed spacers are an essential part of spiral-wound reverse osmosis (RO) and nanofiltration (NF) membrane modules. Geometric modification of feed spacers is a potential option to reduce the impact of biofouling on the performance of membrane systems. The objective of this study was to evaluate the biofouling potential of two commercially available reference feed spacers and four modified feed spacers. The spacers were compared on hydraulic characterization and in biofouling studies with membrane fouling simulators (MFSs). The virgin feed spacer was characterized hydraulically by their resistance, measured in terms of feed channel pressure drop, performed by operating MFSs at varying feed water flow rates. Short-term (9 days) biofouling studies were carried out with nutrient dosage to the MFS feed water to accelerate the biofouling rate. Long-term (96 days) biofouling studies were done without nutrient dosage to the MFS feed water. Feed channel pressure drop was monitored and accumulation of active biomass was quantified by adenosine tri phosphate (ATP) determination. The six feed spacers were ranked on pressure drop (hydraulic characterization) and on biofouling impact (biofouling studies). Significantly different trends in hydraulic resistance and biofouling impact for the six feed spacers were observed. The same ranking for biofouling impact on the feed spacers was found for the (i) short-term biofouling study with nutrient dosage and the (ii) long-term biofouling study without nutrient dosage. The ranking for hydraulic resistance for six virgin feed spacers differed significantly from the ranking of the biofouling impact, indicating that hydraulic resistance of clean feed spacers does not predict the hydraulic resistance of biofouled feed spacers. Better geometric design of feed spacers can be a suitable approach to minimize impact of biofouling in spiral wound membrane systems.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Water Desalination and Reuse Research Center (WDRC)
Citation:
Siddiqui A, Lehmann S, Bucs SS, Fresquet M, Fel L, et al. (2017) Predicting the impact of feed spacer modification on biofouling by hydraulic characterization and biofouling studies in membrane fouling simulators. Water Research 110: 281–287. Available: http://dx.doi.org/10.1016/j.watres.2016.12.034.
Publisher:
Elsevier BV
Journal:
Water Research
Issue Date:
22-Dec-2016
DOI:
10.1016/j.watres.2016.12.034
Type:
Article
ISSN:
0043-1354
Sponsors:
The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0043135416309745
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.authorSiddiqui, Amberen
dc.contributor.authorLehmann, S.en
dc.contributor.authorBucs, Szilarden
dc.contributor.authorFresquet, M.en
dc.contributor.authorFel, L.en
dc.contributor.authorPrest, E.I.E.C.en
dc.contributor.authorOgier, J.en
dc.contributor.authorSchellenberg, C.en
dc.contributor.authorvan Loosdrecht, M.C.M.en
dc.contributor.authorKruithof, J.C.en
dc.contributor.authorVrouwenvelder, Johannes S.en
dc.date.accessioned2017-01-02T09:08:26Z-
dc.date.available2017-01-02T09:08:26Z-
dc.date.issued2016-12-22en
dc.identifier.citationSiddiqui A, Lehmann S, Bucs SS, Fresquet M, Fel L, et al. (2017) Predicting the impact of feed spacer modification on biofouling by hydraulic characterization and biofouling studies in membrane fouling simulators. Water Research 110: 281–287. Available: http://dx.doi.org/10.1016/j.watres.2016.12.034.en
dc.identifier.issn0043-1354en
dc.identifier.doi10.1016/j.watres.2016.12.034en
dc.identifier.urihttp://hdl.handle.net/10754/622329-
dc.description.abstractFeed spacers are an essential part of spiral-wound reverse osmosis (RO) and nanofiltration (NF) membrane modules. Geometric modification of feed spacers is a potential option to reduce the impact of biofouling on the performance of membrane systems. The objective of this study was to evaluate the biofouling potential of two commercially available reference feed spacers and four modified feed spacers. The spacers were compared on hydraulic characterization and in biofouling studies with membrane fouling simulators (MFSs). The virgin feed spacer was characterized hydraulically by their resistance, measured in terms of feed channel pressure drop, performed by operating MFSs at varying feed water flow rates. Short-term (9 days) biofouling studies were carried out with nutrient dosage to the MFS feed water to accelerate the biofouling rate. Long-term (96 days) biofouling studies were done without nutrient dosage to the MFS feed water. Feed channel pressure drop was monitored and accumulation of active biomass was quantified by adenosine tri phosphate (ATP) determination. The six feed spacers were ranked on pressure drop (hydraulic characterization) and on biofouling impact (biofouling studies). Significantly different trends in hydraulic resistance and biofouling impact for the six feed spacers were observed. The same ranking for biofouling impact on the feed spacers was found for the (i) short-term biofouling study with nutrient dosage and the (ii) long-term biofouling study without nutrient dosage. The ranking for hydraulic resistance for six virgin feed spacers differed significantly from the ranking of the biofouling impact, indicating that hydraulic resistance of clean feed spacers does not predict the hydraulic resistance of biofouled feed spacers. Better geometric design of feed spacers can be a suitable approach to minimize impact of biofouling in spiral wound membrane systems.en
dc.description.sponsorshipThe research reported in this publication 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/S0043135416309745en
dc.subjectFeed spacersen
dc.subjectBiofoulingen
dc.subjectHydraulic characterizationen
dc.subjectSeawater desalinationen
dc.subjectWastewater reuseen
dc.titlePredicting the impact of feed spacer modification on biofouling by hydraulic characterization and biofouling studies in membrane fouling simulatorsen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalWater Researchen
dc.contributor.institutionLANXESS BU Liquid Purification Technologies, R&D Membranes, 06803, Bitterfeld-Wolfen, Germanyen
dc.contributor.institutionDepartment of Biotechnology, Faculty of Applied Sciences, Delft University of Technology, Van der Maasweg 9, 2629, HZ Delft, The Netherlandsen
dc.contributor.institutionWetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA, Leeuwarden, The Netherlandsen
kaust.authorSiddiqui, Amberen
kaust.authorBucs, Szilarden
kaust.authorVrouwenvelder, Johannes S.en
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