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Bacterial diversity shifts in AGS reactor treating food industry wastewater

2019-12-05Documento de conferência Acesso aberto
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dc.contributor.authorPaulo, Ana M. S.
dc.contributor.authorAmorim, Catarina L.
dc.contributor.authorCastro, Paula M. L.
dc.date.accessioned2020-03-02T16:20:38Z
dc.date.available2020-03-02T16:20:38Z
dc.date.issued2019-12-05
dc.description.abstractAerobic granular sludge (AGS) is a promising technology for treating industrial wastewater, possessing higher biomass retention and tolerance to toxic substrates than conventional activated sludge systems. AGS presents a diverse microbial community responsible for the simultaneous removal of carbon and nutrients. These communities are protected by extracellular polymeric substances (EPS) that allow for the compact structure of the granules. As a result, bacteria present in the aerobic granules are more resistant to variable wastewater composition, as commonly produced in food industry. The main objective of this work is to study the microbial community dynamics of an AGS reactor treating wastewater from a fish canning plant. The reactor was monitored during 220 days, divided into eight operational phases. COD, NH4+ and PO43- removal were assessed and biomass samples were collected throughout time for microbiome profiling. The reactor presented good COD, PO43- and NH4+ removal during phases I, II and III, but decreased performance during phase IV, when a higher organic load was applied. The removal processes recovered after phase IV until the end of operation. Proteobacteria were dominant in the inoculum (relative abundance of 64.8 %) and dominated almost all reactor phases. Bacteroidetes were second dominant in the inoculum (17.5 %) as well in most reactor phases, being present with higher relative abundance (55.5 %) than Proteobacteria (38.4 %) during phase IV. Within Proteobacteria, Gammaproteobacteria were initially more abundant but Betaproteobacteria predominated after phase IV. For Bacteroidetes, the community dynamics has also changed from phase IV onwards, with Flavobacteriia losing its high relative abundance to Saprospiria and Cytophagia. Several bacterial genera were detected throughout reactor operation, such as Phenylobacterium and Flavobacterium, while other were detected with higher abundance before (Methylocaldum and Plasticicumulans) or after phase IV (Thauera and Paracoccus). The relationship between bacterial community shifts and process performance was assessed. This study increases our knowledge on AGS technology application in real wastewater treatment.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPaulo, A. M. S., Amorim, C. L., Castro, P. M. L. (2019). Bacterial diversity shifts in AGS reactor treating food industry wastewater. In [Abstract] MicroBiotec: Congress Of Microbiology And Biotechnology 2019, December 5th-7th, Coimbra, Portugal. Coimbra: University (Pólo II)pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.14/29751
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherUniversidade de Coimbrapt_PT
dc.subjectAerobic granular sludgept_PT
dc.subjectReal wastewaterpt_PT
dc.subjectBacterial communitypt_PT
dc.subjectFood industrypt_PT
dc.titleBacterial diversity shifts in AGS reactor treating food industry wastewaterpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceCoimbrapt_PT
oaire.citation.startPage122pt_PT
oaire.citation.titleMicrobiotec 2019 - Congress of Microbiology and Biotechnologypt_PT
person.familyNameAmorim
person.familyNameCastro
person.givenNameCatarina L.
person.givenNamePaula
person.identifier1394766
person.identifier2013444
person.identifier.ciencia-id791E-5D42-9B68
person.identifier.ciencia-id7C1F-6C72-354A
person.identifier.orcid0000-0002-6756-552X
person.identifier.orcid0000-0001-8841-6606
person.identifier.ridK-6091-2014
person.identifier.ridM-8241-2013
person.identifier.scopus-author-id36896692500
person.identifier.scopus-author-id7102781782
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublication17a25a6a-22d5-40bc-9183-0c81b79a89bf
relation.isAuthorOfPublicationf2253992-dc8d-4042-9a0f-597ebcf0a1d6
relation.isAuthorOfPublication.latestForDiscovery17a25a6a-22d5-40bc-9183-0c81b79a89bf

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