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Variability in the composition of extracellular polymeric substances from a full-scale aerobic granular sludge reactor treating urban wastewater

2020-10-01Journal article Open access
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dc.contributor.authorOliveira, Ana S.
dc.contributor.authorAmorim, Catarina L.
dc.contributor.authorRamos, Miguel A.
dc.contributor.authorMesquita, Daniela P.
dc.contributor.authorInocêncio, Paulo
dc.contributor.authorFerreira, Eugénio C.
dc.contributor.authorLoosdrecht, Mark van
dc.contributor.authorCastro, Paula M. L.
dc.date.accessioned2021-01-06T18:02:35Z
dc.date.available2021-01-06T18:02:35Z
dc.date.issued2020-10-01
dc.description.abstractWithin the framework of the circular economy, there is a need for waste management alternatives that promote the reuse of materials produced in wastewater treatment plants (WWTP). An interesting option is the recovery of extracellular substances from sludge. The variability of characteristics of potential recovered bioproducts has to be assessed in full scale operational settings. In this study, aerobic granular sludge (AGS) from a full-scale WWTP treating urban wastewater was regularly collected for 4 months to assess variability in extracellular polymeric substances (EPS) composition and in granular morphology. Variations in the EPS composition occurred with time. Proteins and humic substances were the main EPS components (329–494 and 259−316 mg/g VSS of AGS, respectively), with polysaccharides and DNA representing minor components. The application of an extra purification step after extraction to obtain a purer EPS led to a decrease in the yield of each EPS component, particularly pronounced for the polysaccharides. The final product had a rather constant composition for the monthly samples. The granules showed morphological stability throughout the sampling period and the yield of EPS was correlated to the size of the granules, higher when there was a higher content of small granules (Deq<150 μm) comparing to intermediate (150 ≤ Deq<1500 μm) or large granules (Deq≥1500 μm). This is the first time that a potential valorization strategy for surplus AGS biomass is studied in a full-scale environment. Knowledge on yield and product homogeneity is important as these features are essential for downstream application of the recovered EPS.pt_PT
dc.description.versioninfo:eu-repo/semantics/acceptedVersionpt_PT
dc.identifier.citationOliveira, A.S., Amorim, C.L., Ramos, M.A., Mesquita, D.P., Inocêncio, P., Ferreira, E.C., Loosdrecht, M., Castro, P.M.L. (2020). Variability in the composition of extracellular polymeric substances from a full-scale aerobic granular sludge reactor treating urban wastewater. Journal of Environmental Chemical Engineering, 8(5): 104156pt_PT
dc.identifier.doi10.1016/j.jece.2020.104156pt_PT
dc.identifier.eid85090720539
dc.identifier.issn2213-3437
dc.identifier.urihttp://hdl.handle.net/10400.14/31588
dc.identifier.wos000575540800006
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPTDC/BTA-BTA/31264/ 2017pt_PT
dc.relationPOCI-01-0145-FEDER-031264pt_PT
dc.relationUID/Multi/50016/ 2019pt_PT
dc.relationNORTE-08-5369-FSE-000007pt_PT
dc.relationUID/BIO/044697/2019pt_PT
dc.relationNORTE-01-0145- FEDER-000004pt_PT
dc.relation.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAerobic granular sludgept_PT
dc.subjectExtracellular polymeric substancespt_PT
dc.subjectResource recoverypt_PT
dc.subjectWaste valorizationpt_PT
dc.subjectEPS characterizationpt_PT
dc.titleVariability in the composition of extracellular polymeric substances from a full-scale aerobic granular sludge reactor treating urban wastewaterpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue5pt_PT
oaire.citation.titleJournal of Environmental Chemical Engineeringpt_PT
oaire.citation.volume8pt_PT
person.familyNameOliveira
person.familyNameAmorim
person.familyNameRamos
person.familyNameMesquita
person.familyNameFerreira
person.familyNamevan Loosdrecht
person.familyNameCastro
person.givenNameAna S.
person.givenNameCatarina L.
person.givenNameMiguel
person.givenNameDaniela
person.givenNameEugénio C.
person.givenNameMark
person.givenNamePaula
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person.identifier.orcid0000-0001-8841-6606
person.identifier.ridK-6091-2014
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person.identifier.scopus-author-id55532795700
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rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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