Organic carbon source-dependent properties of soluble microbial products in sequencing batch reactors and its effects on membrane fouling

Ly, QV; Nghiem, LD; Cho, J; Maqbool, T; Hur, J

Organic carbon source-dependent properties of soluble microbial products in sequencing batch reactors and its effects on membrane fouling

Ly, QV Nghiem, LD

Cho, J Maqbool, T Hur, J

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Publication Type:: Journal Article
Citation:: Journal of Environmental Management, 2019, 244 pp. 40 - 47
Issue Date:: 2019-08-15

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Field	Value	Language
dc.contributor.author	Ly, QV	en_US
dc.contributor.author	Nghiem, LD https://orcid.org/0000-0002-9039-5792	en_US
dc.contributor.author	Cho, J	en_US
dc.contributor.author	Maqbool, T	en_US
dc.contributor.author	Hur, J	en_US
dc.date.available	2019-05-10	en_US
dc.date.issued	2019-08-15	en_US
dc.identifier.citation	Journal of Environmental Management, 2019, 244 pp. 40 - 47	en_US
dc.identifier.issn	0301-4797	en_US
dc.identifier.uri	http://hdl.handle.net/10453/138605
dc.description.abstract	© 2019 Elsevier Ltd This study investigated the influence of three different organic carbon sources including sodium acetate (SOD), glucose (GLU), and starch (STAR), on soluble microbial products (SMP), which presumably have dissimilar uptake rates and metabolic pathways, in sequencing batch reactors (SBR) and their subsequent effects on membrane fouling of ultrafiltration (UF). SMP were mainly characterized by fluorescence excitation emission matrix coupled with parallel factor analysis (EEM-PARAFAC) and size exclusion chromatography (SEC). SMP produced in SOD-fed SBR showed higher abundances of protein-like fluorescent component and large sized aliphatic biopolymer (BP) than GLU- or STAR-fed counterpart did, while the STAR-based operation resulted in more SMP enriched with humic-like fluorescence. The differences in SMP exerted marked effects on UF membrane fouling as indicated by the highest fouling potential with reversibility shown for the SMP from the SOD-fed reactor. Regardless of the carbon source, BP fraction and protein-like component exhibited the greatest extent of reversible fouling, suggesting that size exclusion plays a critical role. However, notable differences in the reversible fouling propensity of relatively smaller size fractions among the three SBRs signified the possible involvement of chemical interactions as a secondary fouling mechanism and its dependency on different carbon sources. Our results provide a new insight into the roles of carbon sources in the characteristics of SMP in biological treatment systems and their effects on the post-treatment using membrane filtration, which is ultimately beneficial to the optimization of biological treatment design and membrane filtration operation.	en_US
dc.relation.ispartof	Journal of Environmental Management	en_US
dc.relation.isbasedon	10.1016/j.jenvman.2019.05.045	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.subject.mesh	Carbon	en_US
dc.subject.mesh	Membranes, Artificial	en_US
dc.subject.mesh	Ultrafiltration	en_US
dc.subject.mesh	Chromatography, Gel	en_US
dc.subject.mesh	Spectrometry, Fluorescence	en_US
dc.subject.mesh	Bioreactors	en_US
dc.title	Organic carbon source-dependent properties of soluble microbial products in sequencing batch reactors and its effects on membrane fouling	en_US
dc.type	Journal Article
utslib.citation.volume	244	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	244	en_US

Abstract:

© 2019 Elsevier Ltd This study investigated the influence of three different organic carbon sources including sodium acetate (SOD), glucose (GLU), and starch (STAR), on soluble microbial products (SMP), which presumably have dissimilar uptake rates and metabolic pathways, in sequencing batch reactors (SBR) and their subsequent effects on membrane fouling of ultrafiltration (UF). SMP were mainly characterized by fluorescence excitation emission matrix coupled with parallel factor analysis (EEM-PARAFAC) and size exclusion chromatography (SEC). SMP produced in SOD-fed SBR showed higher abundances of protein-like fluorescent component and large sized aliphatic biopolymer (BP) than GLU- or STAR-fed counterpart did, while the STAR-based operation resulted in more SMP enriched with humic-like fluorescence. The differences in SMP exerted marked effects on UF membrane fouling as indicated by the highest fouling potential with reversibility shown for the SMP from the SOD-fed reactor. Regardless of the carbon source, BP fraction and protein-like component exhibited the greatest extent of reversible fouling, suggesting that size exclusion plays a critical role. However, notable differences in the reversible fouling propensity of relatively smaller size fractions among the three SBRs signified the possible involvement of chemical interactions as a secondary fouling mechanism and its dependency on different carbon sources. Our results provide a new insight into the roles of carbon sources in the characteristics of SMP in biological treatment systems and their effects on the post-treatment using membrane filtration, which is ultimately beneficial to the optimization of biological treatment design and membrane filtration operation.

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http://hdl.handle.net/10453/138605