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Effects of fluoxetine schock loadings in a aerobic granular sludge sequencing batch reactor

2013-10-02Conference object Open access
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dc.contributor.authorMoreira, Irina S.
dc.contributor.authorRibeiro, Ana R.
dc.contributor.authorAmorim, Catarina L.
dc.contributor.authorMesquita, Raquel B. R.
dc.contributor.authorRangel, António O. S. S.
dc.contributor.authorTiritan, Maria E.
dc.contributor.authorCastro, Paula M. L.
dc.date.accessioned2013-11-06T14:41:32Z
dc.date.available2013-11-06T14:41:32Z
dc.date.issued2013-10-02
dc.description.abstractPharmaceuticals have received increasing attention as emerging organic pollutants due to their frequent occurrence in the environment and potential adverse effects on ecossistems and to human health. Pharmaceuticals may not be completely metabolized in the human body and can enter municipal sewage systems as the parent drug and as their “biologically active” metabolites. Some of these compounds cannot be easily removed at wastewater treatment plants (WWTPs) [1]. Fluoxetine (FLX) is a chiral fluorinated pharmaceutical indicated mainly for treatment of depression and is one of the most dispensed drugs in the world. There is a clear evidence of environmental contamination with this drug and its active metabolite norfluoxetine (NFLX) [2]. Granular sludge sequencing batch reactors (SBR) constitute a promising technology for the treatment of effluents containing micropollutants. The main biological processes occurring in wastewater treatment plants - COD, N and P removal - can be inhibited by these pollutants. This study focused on the effect of FLX on the performance of granular sludge SBR and on the diversity of the microbial population under continuous and intermittent feeding of the compound. The COD removal was not markedly affected by FLX shock loads. Ammonium removal was initially affected but after ca. 20 days of FLX feeding, NH4+ was not detected in the treated effluent – maximum of 0.03 mM – indicating that ammonia oxidizing bacteria (AOB) became adapted to the presence of FLX. Nitrite was also practically not detected in the treated effluent - maximum of 0.01 mM - indicating that nitrite oxidizing bacteria (NOB) were not inhibited by the presence of the FLX, whereas nitrate accumulated in the effluent, indicating that denitrification was affected. Phosphate removal was markedly affected in the beginning of FLX feeding showing a gradual adaptation to the presence of FLX, being practically not detected in the treated effluent (maximum of 0.04 mM) after 70 days. There was no evidence of FLX biodegradation. Changes in the bacterial community from aerobic granules were examined using denaturing gradient gel electrophoresis (DGGE) of 16S rRNA. Samples taken before starting the shock loadings with FLX clearly shift from other samples. Moreover, two main branches separate the samples taken during continuous FLX feeding from samples taken during intermittent FLX feeding.por
dc.identifier.citationMOREIRA, Irina [et al.] - Effects of fluoxetine schock loadings in a aerobic granular sludge sequencing batch reactor - V International Conference on Environmental Industrial and Applied Microbiology - BioMicroWorld 2013, Madrid, Spain, 2-4 October 2013 – In Formatex Research Center, Biomicroworld 2013 Book of Abstracts. Available at http://www.formatex.info/biomicroworld2013/abstracts/htm/782.pdfpor
dc.identifier.urihttp://hdl.handle.net/10400.14/13140
dc.language.isoengpor
dc.relationFLUOROPHARMA - Biodegradation and removal of chiral and achiral fluorinated pharmaceuticals from wastewaters
dc.subjectFluoxetinepor
dc.subjectSBRpor
dc.subjectAerobic Granular Sludgepor
dc.titleEffects of fluoxetine schock loadings in a aerobic granular sludge sequencing batch reactorpor
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleFLUOROPHARMA - Biodegradation and removal of chiral and achiral fluorinated pharmaceuticals from wastewaters
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEBB-EBI%2F111699%2F2009/PT
oaire.fundingStream3599-PPCDT
person.familyNameMoreira
person.familyNameMesquita
person.familyNameSantos Silva Rangel
person.familyNameTiritan
person.familyNameCastro
person.givenNameIrina Susana Sousa
person.givenNameRaquel
person.givenNameAntónio Osmaro
person.givenNameMaria Elizabeth
person.givenNamePaula
person.identifierK-5841-2014
person.identifierJ-4630-2013
person.identifier1310409
person.identifier2013444
person.identifier.ciencia-id161E-A350-7FDE
person.identifier.ciencia-idEB1D-DEE3-0B60
person.identifier.ciencia-idD61D-7CFB-178A
person.identifier.ciencia-idD915-BFC0-FB3A
person.identifier.ciencia-id7C1F-6C72-354A
person.identifier.orcid0000-0001-6516-0994
person.identifier.orcid0000-0001-7745-1860
person.identifier.orcid0000-0002-6486-8947
person.identifier.orcid0000-0003-3320-730X
person.identifier.orcid0000-0001-8841-6606
person.identifier.ridK-5841-2014
person.identifier.ridJ-4630-2013
person.identifier.ridK-9492-2014
person.identifier.ridM-8241-2013
person.identifier.scopus-author-id36798094100
person.identifier.scopus-author-id7005556626
person.identifier.scopus-author-id7004827387
person.identifier.scopus-author-id6602890981
person.identifier.scopus-author-id7102781782
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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