dc.contributor.authorKunacheva, Chinagarn
dc.contributor.authorSoh, Yan Ni Annie
dc.contributor.authorTrzcinski, Antoine P.
dc.contributor.authorStuckey, David Campbell
dc.date.accessioned2017-09-20T09:18:51Z
dc.date.available2017-09-20T09:18:51Z
dc.date.issued2016
dc.identifier.citationKunacheva, C., Soh, Y. N. A., Trzcinski, A. P., & Stuckey, D. C. (2017). Soluble microbial products (SMPs) in the effluent from a submerged anaerobic membrane bioreactor (SAMBR) under different HRTs and transient loading conditions. Chemical Engineering Journal, 311, 72-81.en_US
dc.identifier.issn1385-8947en_US
dc.identifier.urihttp://hdl.handle.net/10220/43777
dc.description.abstractThis study investigated the performance of a submerged anaerobic membrane bioreactor (SAMBR) fed with synthetic wastewater (544 ± 22 mgCOD/L) operating at different hydraulic retention times (HRTs-12 h, 8 h, 6 h, 4 h, 2 h, and 1 h) at both steady state, and under transient load conditions (2 and 1 h), and the SMPs produced under these conditions. COD removal at decreasing HRTs (12 h, 8 h, 6 h, 4 h, and 2 h) was high (>94%), but decreased to 80% when operating at 1 h HRT. VFAs accumulated when the HRT was decreased to 2 h and 1 h, accounting for 69% and 89% of the effluent COD, respectively. Effluent SMPs accounted for an average of 14 ± 2 mgCOD/L at steady state, but this fluctuated more during transient conditions (12 ± 6 mgCOD/L). The COD equivalent of dissolved methane in the effluent was 17% at 4 h HRT, exceeding the saturation value of methane. Low MW compounds were identified using gas chromatography–mass spectrometry (GC–MS), with solid phase extraction (SPE) as the pre-treatment. 120 compounds were identified in the effluent at steady state, and were alkanes (39), alkenes (3), esters (11), alcohols (7), nitrogenated compounds (11), phenols (11), and others (9). Increases in cyclooctasulfur, N-butyl-benzenesulfonamide, alkanes, 1-naphthalenol, camphor, 2-methylphenol, and (Z)-9-octadecenamide were also found during transient conditions, and these compounds were not found in the feed; hence it is possible that these compounds were produced by microorganism as by-products from substrate utilization.en_US
dc.format.extent38 p.en_US
dc.language.isoenen_US
dc.relation.ispartofseriesChemical Engineering Journalen_US
dc.rights© 2016 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Chemical Engineering Journal, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.cej.2016.11.074].en_US
dc.subjectAnaerobicen_US
dc.subjectGC–MS analysisen_US
dc.titleSoluble microbial products (SMPs) in the effluent from a submerged anaerobic membrane bioreactor (SAMBR) under different HRTs and transient loading conditionsen_US
dc.typeJournal Article
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.identifier.doihttp://dx.doi.org/10.1016/j.cej.2016.11.074
dc.description.versionAccepted versionen_US


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