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Biodegradation of 2-fluorobenzoate and dichloromethane under simultaneous and sequential alternating pollutant feeding

2008Journal article Restricted access
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dc.contributor.authorOsuna, M. Begoña
dc.contributor.authorSipma, Jan
dc.contributor.authorEmanuelsson, Maria A. E.
dc.contributor.authorCarvalho, M. Fátima
dc.contributor.authorCastro, Paula M. L.
dc.date.accessioned2010-10-08T17:01:13Z
dc.date.available2010-10-08T17:01:13Z
dc.date.issued2008
dc.description.abstractTwo up-flow fixed-bed reactors (UFBRs), inoculated with activated sludge and operated for 162 days,were fed 1 mmol Lˉ¹ dˉ¹ with twomodel halogenated compounds, 2-fluorobenzoate (2-FB) and dichloromethane (DCM). Expanded clay (EC) and granular activated carbon (GAC)were used as biofilm carrier. EC did not have any adsorption capacity for both model compounds tested, whereas GAC could adsorb 1.3 mmol gˉ¹ GAC for 2-FB and 4.5mmol gˉ¹ GAC for DCM. Both pollutants were degraded in both reactors under simultaneous feeding. However, biodegradation in the EC reactor was more pronounced, and re-inoculation of the GAC reactorwas required to initiate 2-FB degradation. Imposing sequential alternating pollutant (SAP) feeding caused starvation periods in the EC reactor, requiring time-consuming recovery of 2-FB biodegradation after resuming its feeding, whereas DCMdegradation recovered significantly faster. The SAP feeding did not affect performance in the GAC reactor as biodegradation of both pollutants was continuously observed during SAP feeding, indicating the absence of true starvation.por
dc.identifier.citationOsuna, M. Begoña; Sipma, Jan; Emanuelsson, Maria A. E.; Carvalho, M. Fátima; Castro, Paula M. L. - Biodegradation of 2-fluorobenzoate and dichloromethane under simultaneous and sequential alternating pollutant feeding. Water Research. ISSN 0043-1354. 442: 14 (2008) 3857–3869por
dc.identifier.doi10.1016/j.watres.2008.05.011
dc.identifier.urihttp://hdl.handle.net/10400.14/2731
dc.language.isoengpor
dc.publisherElsevierpor
dc.subjectUp-flow fixed-bed bioreactorpor
dc.subject2-fluorobenzoatepor
dc.subjectDichloromethanepor
dc.subjectBiodegradationpor
dc.subjectSequentially alternating pollutantspor
dc.subjectMicrobial dynamicspor
dc.titleBiodegradation of 2-fluorobenzoate and dichloromethane under simultaneous and sequential alternating pollutant feedingpor
dc.typejournal article
dspace.entity.typePublication
person.familyNameCarvalho
person.familyNameCastro
person.givenNameM. Fátima
person.givenNamePaula
person.identifier2013444
person.identifier.ciencia-id6913-1464-155B
person.identifier.ciencia-id7C1F-6C72-354A
person.identifier.orcid0000-0002-7181-0540
person.identifier.orcid0000-0001-8841-6606
person.identifier.ridM-8241-2013
person.identifier.scopus-author-id14038677200
person.identifier.scopus-author-id7102781782
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication964897d5-02c3-4efe-a8c3-44ea68cf4974
relation.isAuthorOfPublicationf2253992-dc8d-4042-9a0f-597ebcf0a1d6
relation.isAuthorOfPublication.latestForDiscoveryf2253992-dc8d-4042-9a0f-597ebcf0a1d6

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