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Recovered granular sludge extracellular polymeric substances as carrier for bioaugmentation of granular sludge reactor

2021Journal article Open access
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dc.contributor.authorOliveira, Ana S.
dc.contributor.authorAmorim, Catarina L.
dc.contributor.authorZlopasa, Jure
dc.contributor.authorLoosdrecht, Mark van
dc.contributor.authorCastro, Paula M. L.
dc.date.accessioned2021-04-28T14:27:03Z
dc.date.available2023-03-02T01:30:29Z
dc.date.issued2021
dc.description.abstractAn increasing amount of industrial chemicals are being released into wastewater collection systems and indigenous microbial communities in treatment plants are not always effective for their removal. In this work, extracellular polymeric substances (EPS) recovered from aerobic granular sludge (AGS) were used as a natural carrier to immobilize a specific microbial strain, Rhodococcus sp. FP1, able to degrade 2-fluorophenol (2-FP). The produced EPS granules exhibited a 2-FP degrading ability of 100% in batch assays, retaining their original activity after up to 2-months storage. Furthermore, EPS granules were added to an AGS reactor intermittently fed with saline wastewater containing 2-FP. Degradation of 2-FP and stoichiometric fluorine release occurred 8 and 35 days after bioaugmentation, respectively. Chemical oxygen demand removal was not significantly impaired by 2-FP or salinity loads. Nutrients removal was impaired by 2-FP load, but after bioaugmentation, the phosphate and ammonium removal efficiency improved from 14 to 46% and from 25 to 42%, respectively. After 2-FP feeding ceased, at low/moderate salinity (0.6ā€“6.0 g Lāˆ’1 NaCl), ammonium removal was completely restored, and phosphate removal efficiency increased. After bioaugmentation, 11 bacteria isolated from AGS were able to degrade 2-FP, indicating that horizontal gene transfer could have occurred in the reactor. The improvement of bioreactor performance after bioaugmentation with EPS immobilized bacteria and the maintenance of cell viability through storage are the main advantages of the use of this natural microbial carrier for bioaugmentation, which can benefit wastewater treatment processes.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.chemosphere.2021.130037pt_PT
dc.identifier.eid85101756233
dc.identifier.issn0045-6535
dc.identifier.pmid33667767
dc.identifier.urihttp://hdl.handle.net/10400.14/32802
dc.identifier.wos000647817200065
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subject2-Fluorophenolpt_PT
dc.subjectAerobic granular sludgept_PT
dc.subjectBioaugmentationpt_PT
dc.subjectEPS granulespt_PT
dc.titleRecovered granular sludge extracellular polymeric substances as carrier for bioaugmentation of granular sludge reactorpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleChemospherept_PT
oaire.citation.volume275pt_PT
person.familyNameOliveira
person.familyNameAmorim
person.familyNamevan Loosdrecht
person.familyNameCastro
person.givenNameAna S.
person.givenNameCatarina L.
person.givenNameMark
person.givenNamePaula
person.identifier1394766
person.identifier2013444
person.identifier.ciencia-idF31D-DEA6-9783
person.identifier.ciencia-id791E-5D42-9B68
person.identifier.ciencia-id7C1F-6C72-354A
person.identifier.orcid0000-0002-3070-1604
person.identifier.orcid0000-0002-6756-552X
person.identifier.orcid0000-0003-0658-4775
person.identifier.orcid0000-0001-8841-6606
person.identifier.ridK-6091-2014
person.identifier.ridM-8241-2013
person.identifier.scopus-author-id55532795700
person.identifier.scopus-author-id36896692500
person.identifier.scopus-author-id7004463801
person.identifier.scopus-author-id7102781782
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication04a1cc1a-24db-4ebd-8ca4-72c8f729c586
relation.isAuthorOfPublication17a25a6a-22d5-40bc-9183-0c81b79a89bf
relation.isAuthorOfPublication82d7f5ef-4aea-41c3-b2eb-29e19264b0af
relation.isAuthorOfPublicationf2253992-dc8d-4042-9a0f-597ebcf0a1d6
relation.isAuthorOfPublication.latestForDiscoveryf2253992-dc8d-4042-9a0f-597ebcf0a1d6

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