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Efficient fouling control using outer-selective hollow fiber thin-film composite membranes for osmotic membrane bioreactor applications

[Display omitted] •Performance of novel homemade OSFH TFC FO membrane in OMBR system was investigated.•OSHF TFC FO membrane exhibited excellent intrinsic properties.•OSHF TFC FO membrane produced high initial water flux of 14.4 LMH.•High cleaning efficiency using three different fouling mitigation m...

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Bibliographic Details
Published in:Bioresource technology 2019-06, Vol.282, p.9-17
Main Authors: Tran, Van Huy, Lim, Sungil, Han, Dong Suk, Pathak, Nirenkumar, Akther, Nawshad, Phuntsho, Sherub, Park, Hyunwoong, Shon, Ho Kyong
Format: Article
Language:English
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Summary:[Display omitted] •Performance of novel homemade OSFH TFC FO membrane in OMBR system was investigated.•OSHF TFC FO membrane exhibited excellent intrinsic properties.•OSHF TFC FO membrane produced high initial water flux of 14.4 LMH.•High cleaning efficiency using three different fouling mitigation methods.•OSHF TFC FO membrane showed high pollutant removals >98% This paper investigates the efficiency of fouling mitigation methods using a novel outer selective hollow fiber thin-film composite forward osmosis (OSHF TFC FO) membrane for osmosis membrane bioreactor (OMBR) system treating municipal wastewater. Two home-made membrane modules having similar transport properties were used. Two operation regimes with three different fouling mitigation strategies were utilized to test the easiness of membrane for fouling cleaning. These two membrane modules demonstrated high performance with high initial water flux of 14.4 LMH and 14.1 LMH and slow increase rate of mixed liquor’s salinity in the bioreactor using 30 g/L NaCl as draw solution. OMBR system showed high removals of total organic carbon and NH4 + -N (>98%). High fouling cleaning efficiency was achieved using OSHF TFC FO membrane with different fouling control methods. These results showed that this membrane is suitable for OMBR applications due to its high performance and its simplicity for fouling mitigation.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2019.03.002