Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/106735
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dc.creatorMaria José Lima
dc.creatorM. Enis Leblebic
dc.creatorMadalena M. Dias
dc.creatorJosé Carlos B. Lopes
dc.creatorCláudia G. Silva
dc.creatorAdrián M. T. Silva
dc.creatorJoaquim Luís Faria
dc.date.accessioned2019-05-09T23:11:45Z-
dc.date.available2019-05-09T23:11:45Z-
dc.date.issued2014
dc.identifier.issn0944-1344
dc.identifier.othersigarra:105907
dc.identifier.urihttps://hdl.handle.net/10216/106735-
dc.description.abstractThe degradation of ciprofloxacin was studied in aqueous solutions by using a continuous flow homogeneous photo-Fenton process under simulated solar light. The effect of different operating conditions on the degradation of ciprofloxacin was investigated by changing the hydrogen peroxide (0-2.50 mM) and iron(II) sulphate (0-10 mg Fe L-1) concentrations, as well as the pH (2.8-10), irradiance (0-750 W m(-2)) and residence time (0.13-3.4 min) of the process. As expected, the highest catalytic activity in steady state conditions was achieved at acidic pH (2.8), namely 85 % of ciprofloxacin conversion, when maintaining the other variables constant (i.e. 2.0 mg L-1 of iron(II), 2.50 mM of hydrogen peroxide, 1.8 min of residence time and 500 W m(-2) of irradiance). Additionally, magnetite magnetic nanoparticles (ca. 20 nm of average particle size) were synthesized, characterized and tested as a possible catalyst for this reaction. In this case, the highest catalytic activity was achieved at natural pH, namely a 55 % average conversion of ciprofloxacin in 1.8 min of residence time and under 500 W m(-2). Some of the photocatalytic activity was attributed to Fe2+ leaching from the magnetic nanoparticles to the solution.
dc.language.isoeng
dc.relationinfo:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projetos Estratégicos/PEst-C/EQB/LA0020/2013/PROJECTO ESTRATÉGICO - LA 20 - 2013-2014/LA 20
dc.rightsrestrictedAccess
dc.subjectCiências Tecnológicas, Ciências da engenharia e tecnologias
dc.subjectTechnological sciences, Engineering and technology
dc.titleContinuous flow photo-Fenton treatment of ciprofloxacin in aqueous solutions using homogeneous and magnetically recoverable catalysts
dc.typeArtigo em Revista Científica Internacional
dc.contributor.uportoFaculdade de Engenharia
dc.identifier.doi10.1007/s11356-014-2515-6
dc.identifier.authenticusP-009-VR3
dc.subject.fosCiências da engenharia e tecnologias
dc.subject.fosEngineering and technology
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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