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Biosorption of fluoroquinolones by activated sludge and aerobic granules sludge

2015-05-13Conference object Open access
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dc.contributor.authorFerreira, Vanessa R. A.
dc.contributor.authorAmorim, Catarina L.
dc.contributor.authorCravo, Sara M.
dc.contributor.authorTiritan, Maria E.
dc.contributor.authorCastro, Paula M. L.
dc.contributor.authorAfonso, Carlos M. M.
dc.date.accessioned2015-06-25T14:01:26Z
dc.date.available2015-06-25T14:01:26Z
dc.date.issued2015-05-13
dc.descriptionOral communicationpor
dc.description.abstractAntibiotic residues have been detected in various environmental matrices, such as surface water and even drinking water. Although present at low levels (μg/L, ng/L), many antibiotics are bioaccumulative, pseudo-persistent and can promote resistance/alterations in bacterial populations [1]. Recent studies on antibiotics removal by activated sludge (AS) and aerobic granules (AGS) show biosorption as the dominant process, determining the fate of these micropollutants [2-3]. In this work the biosorption of three widely used fluoroquinolones (FQ) - ofloxacin (OFL), norfloxacin (NOR) and ciprofloxacin (CPF) - to AS and AGS was evaluated. A High Performance Liquid Chromatography with Fluorescence Detection (HPLC-FD) method was validated and used to follow the biosorption of the target FQ. Data obtained in this study contribute to a better comprehension of FQ biosorption behavior in AS and AGS. At pH 7 AS showed better performance to biosorb OFL, NOR and CPF than AGS. The higher biosortion capacity of AS was probably due to the negative charge on its surface, evaluated by a zeta potential of -25.65 mV, at pH 7. OFL was the less biosorbed, both onto AS and AGS, because this FQ at pH 7 is mainly present in its anionic form. The equilibrium data for AS showed a better fit to the Langmuir model, while the model that presented better fit for AGS was the Freundlich model. The FQ could be desorbed from AGS at pH 3, pH 8 and pH 9 whereas at pH 4 the biosorption process was promoted.por
dc.identifier.citationFerreira, Vanessa R. A. [et al.] - Biosorption of fluoroquinolones by activated sludge and aerobic granules sludge. – 8th Meeting of young researchers of University of Porto IJUP`15, Porto, Portugal, 13-15 May, 2015 – In Abstract of 8th Meeting of young researchers of University of Porto IJUP`15, p.25por
dc.identifier.urihttp://hdl.handle.net/10400.14/17925
dc.language.isoengpor
dc.peerreviewednopor
dc.relationCEQUIMED-Pest-OE/SAU/UI4040/2014por
dc.relationFLUOROPHARMA - Biodegradation and removal of chiral and achiral fluorinated pharmaceuticals from wastewaters
dc.relationPEst-C/MAR/LA0015/2013.por
dc.relationStrategic Project - LA 16 - 2013-2014
dc.subjectFluoroquinolonaspor
dc.subjectBiosorptionpor
dc.titleBiosorption of fluoroquinolones by activated sludge and aerobic granules sludgepor
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleFLUOROPHARMA - Biodegradation and removal of chiral and achiral fluorinated pharmaceuticals from wastewaters
oaire.awardTitleStrategic Project - LA 16 - 2013-2014
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEBB-EBI%2F111699%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FEQB%2FLA0016%2F2013/PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameTiritan
person.familyNameCastro
person.familyNameAfonso
person.givenNameMaria Elizabeth
person.givenNamePaula
person.givenNameCarlos
person.identifier1310409
person.identifier2013444
person.identifier.ciencia-idD915-BFC0-FB3A
person.identifier.ciencia-id7C1F-6C72-354A
person.identifier.ciencia-id6A10-3565-6158
person.identifier.orcid0000-0003-3320-730X
person.identifier.orcid0000-0001-8841-6606
person.identifier.orcid0000-0002-5731-5789
person.identifier.ridK-9492-2014
person.identifier.ridM-8241-2013
person.identifier.ridI-5989-2015
person.identifier.scopus-author-id6602890981
person.identifier.scopus-author-id7102781782
person.identifier.scopus-author-id36145043600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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