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Impact of fluorides on the removal of heavy metals from an electroplating effluent using a flocculent brewer’s yeast strain of Saccharomyces cerevisiae

2011Journal article Restricted access
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dc.contributor.authorMachado, Manuela D.
dc.contributor.authorSoares, Eduardo V.
dc.contributor.authorSoares, Helena M.V.M.
dc.date.accessioned2017-09-01T10:56:03Z
dc.date.embargo2117
dc.date.issued2011
dc.description.abstractBesides several toxic heavy metals, electroplating effluents can have in solution different cations and anions, which may influence heavy metals removal by the biomass. Among them, fluorides are commonly used in the electroplating industries and thus can be found in the respective wastewaters. In the present work, the effect of the presence of fluorides in the efficiency of chromium(III), copper(II) and nickel(II) removal, from an effluent, by heat-inactivated cells of a brewing flocculent strain of Saccharomyces cerevisiae was evaluated. The presence of fluorides severely decreased (460%) the removal of chromium(III) by yeast biomass. This effect impaired the effective treatment of the effluent according to the US Environmental Protection Agency and the Portuguese law; conversely, a higher removal of copper(II) and nickel(II) was observed. This behaviour can be understood by metal speciation. In the presence of fluorides, chromium(III) was mainly complexed, becoming unavailable for yeast accumulation; this effect decreased the efficiency of chromium(III) removal. Thus, in the presence of fluorides, less chromium(III) is associated with biomass and consequently more yeast binding sites remain available for the uptake of other metals present in solution. This fact explains the increase of copper(II) and nickel(II) removal in the presence of fluorides.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3184/095422911X13201614845796pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/10232
dc.language.isoengpt_PT
dc.publisherTaylor & Francispt_PT
dc.relation.ispartofseriesChemical Speciation and Bioavailability;Vol. 23, Issue 4
dc.relation.publisherversionhttp://www.tandfonline.com/doi/abs/10.3184/095422911X13201614845796pt_PT
dc.subjectBioavailabilitypt_PT
dc.subjectBioremediationpt_PT
dc.subjectBiosorptionpt_PT
dc.subjectChemical speciationpt_PT
dc.subjectHeavy metals removalpt_PT
dc.titleImpact of fluorides on the removal of heavy metals from an electroplating effluent using a flocculent brewer’s yeast strain of Saccharomyces cerevisiaept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleChemical Speciation and Bioavailabilitypt_PT
person.familyNameSoares
person.givenNameEduardo
person.identifier93637
person.identifier.ciencia-idD612-0D0E-4984
person.identifier.orcid0000-0003-2280-5291
person.identifier.ridO-5908-2015
person.identifier.scopus-author-id7102060173
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationb3ebdee1-84fa-4183-a1d8-c3cdcaaef219
relation.isAuthorOfPublication.latestForDiscoveryb3ebdee1-84fa-4183-a1d8-c3cdcaaef219

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