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4-Chlorophenol degradation by a bacterial consortium: development of a granular activated carbon biofilm reactor

1999Journal article Restricted access
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dc.contributor.authorCaldeira, M.
dc.contributor.authorHeald, S. C.
dc.contributor.authorCarvalho, M. F.
dc.contributor.authorVasconcelos, I.
dc.contributor.authorBull, A. T.
dc.contributor.authorCastro, P. M. L.
dc.date.accessioned2011-10-19T13:54:10Z
dc.date.available2011-10-19T13:54:10Z
dc.date.issued1999
dc.description.abstractA bacterial consortium that can degrade chloro- and nitrophenols has been isolated from the rhizosphere of Phragmitis communis. Degradation of 4-chlorophenol (4-CP) by a consortium attached to granular activated carbon (GAC) in a biofilm reactor was evaluated during both open and closed modes of operation. During the operation of the biofilm reactor, 4-CP was not detected in the column effluent, being either adsorbed to the GAC or biodegraded by the consortium. When 4-CP at 100 mg l−1 was fed to the column in open mode operation (20 mg g−1 GAC total supply), up to 27% was immediately available for biodegradation, the rest being adsorbed to the GAC. Biodegradation continued after the system was returned to closed mode operation, indicating that GAC bound 4-CP became available to the consortium. Biofilm batch cultures supplied with 10–216 mg 4-CP g−1 GAC suggested that a residual fraction of GAC-bound 4-CP was biologically unavailable. The consortium was able to metabolise 4-CP after perturbations by the addition of chromium (Cr VI) at 1–5 mg l−1 and nitrate at concentrations up to 400 mg l−1. The development of the biofilm structure was analysed by scanning electron microscopy and confocal laser scanning microscopy (CLSM) techniques. CLSM revealed a heterogeneous structure with a network of channels throughout the biofilm, partially occupied by microbial exopolymer structures.por
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.citationCALDEIRA, M... [et al.] - 4-Chlorophenol degradation by a bacterial consortium: development of a granular activated carbon biofilm reactor. Applied Microbiology and Biotechnology. ISSN 1432-0614. Vol.52, n.º 5 (1999), p. 722-729por
dc.identifier.doi10.1007/s002530051584
dc.identifier.urihttp://hdl.handle.net/10400.14/6474
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherSpringer Verlagpor
dc.title4-Chlorophenol degradation by a bacterial consortium: development of a granular activated carbon biofilm reactorpor
dc.typejournal article
dspace.entity.typePublication
person.familyNameCarvalho
person.familyNameVasconcelos
person.familyNameCastro
person.givenNameM. Fátima
person.givenNameIsabel
person.givenNamePaula
person.identifier2013444
person.identifier.ciencia-id6913-1464-155B
person.identifier.ciencia-id851B-41B9-4746
person.identifier.ciencia-id7C1F-6C72-354A
person.identifier.orcid0000-0002-7181-0540
person.identifier.orcid0000-0002-0565-3516
person.identifier.orcid0000-0001-8841-6606
person.identifier.ridN-3870-2013
person.identifier.ridM-8241-2013
person.identifier.scopus-author-id14038677200
person.identifier.scopus-author-id7003767794
person.identifier.scopus-author-id7102781782
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication964897d5-02c3-4efe-a8c3-44ea68cf4974
relation.isAuthorOfPublication251ce926-a408-483f-a3df-acebe6631477
relation.isAuthorOfPublicationf2253992-dc8d-4042-9a0f-597ebcf0a1d6
relation.isAuthorOfPublication.latestForDiscovery964897d5-02c3-4efe-a8c3-44ea68cf4974

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