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Insight into antibiotics removal: exploring the photocatalytic performance of a Fe3O4/ZnO nanocomposite in a novel magnetic sequential batch reactor

2019Journal article Restricted access
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dc.contributor.authorFernández, L.
dc.contributor.authorGamallo, M.
dc.contributor.authorGonzález-Gómez, M. A.
dc.contributor.authorVázquez-Vázquez, C.
dc.contributor.authorRivas, J.
dc.contributor.authorPintado, M.
dc.contributor.authorMoreira, M. T.
dc.date.accessioned2019-03-15T17:52:15Z
dc.date.available2019-03-15T17:52:15Z
dc.date.issued2019
dc.description.abstractThe purpose of this research was the preparation and photocatalytic evaluation of a novel nanocomposite (NC) based on Fe3O4/ZnO, to eliminate four persistent antibiotics in surface waters: sulfamethoxazole, trimethoprim, erythromycin and roxithromycin. Prior to the operation of the photocatalytic reactor, the influence of pH (3-9), catalyst concentration (50-800 mg L-1), oxidant dose (0-100 mg L-1) and concentration of different targets (10-100 mu g L-1) on the catalytic efficiency was evaluated. The analysis of reaction kinetics showed that degradation processes of the four antibiotics followed a pseudo-first-order kinetic model. Antibiotics adsorption onto the nanocomposite surface depended on their electrostatic nature and played an important role when decreasing the initial concentration of antibiotics. In this context, kinetic rates were higher at lower initial levels of organic pollutants, which is a favourable effect from a practical application perspective. On the other hand, a synergistic effect of the available Fe in the nanocomposite was found, contributing to the oxidation of antibiotics by photo-Fenton as a secondary reaction. Then, a magnetic photocatalytic reactor was operated under optimal conditions. The enhanced photonic efficiency of Fe3O4/ZnO in the system, as well as the ease of the magnetic separation and catalyst reusability, indicate the viability of this reactor configuration.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFernández, L., Gamallo, M., González-Gómez, M. A., Vázquez-Vázquez, C., Rivas, J., Pintado, M., & Moreira, M. T. (2019). Insight into antibiotics removal: exploring the photocatalytic performance of a Fe3O4/ZnO nanocomposite in a novel magnetic sequential batch reactor. Journal of Environmental Management, 237, 595–608. https://doi.org/10.1016/j.jenvman.2019.02.089pt_PT
dc.identifier.doi10.1016/j.jenvman.2019.02.089pt_PT
dc.identifier.eid85062238244
dc.identifier.eissn1095-8630
dc.identifier.issn0301-4797
dc.identifier.pmid30826641
dc.identifier.urihttp://hdl.handle.net/10400.14/27093
dc.identifier.wos000465059900063
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationED431C-2017/29
dc.relationED431C-2017/22
dc.relationCTQ2016-79461-R
dc.relationMAT2015-67458-P
dc.relationCIVP18A3940
dc.relationAGRUP2015/02
dc.subjectPhotocatalytic reactorpt_PT
dc.subjectMagnetic separationpt_PT
dc.subjectNanocompositept_PT
dc.subjectPhotocatalysispt_PT
dc.subjectWastewater treatmentpt_PT
dc.titleInsight into antibiotics removal: exploring the photocatalytic performance of a Fe3O4/ZnO nanocomposite in a novel magnetic sequential batch reactorpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage608
oaire.citation.startPage595
oaire.citation.titleAustralasian Journal of Environmental Managementpt_PT
oaire.citation.volume237
person.familyNameGamallo Mirón
person.familyNameVazquez-Vazquez
person.familyNameRivas
person.familyNamePintado
person.familyNameMoreira
person.givenNameMaria
person.givenNameCarlos
person.givenNameJosé
person.givenNameMaria Manuela
person.givenNameMaria Teresa
person.identifier456608
person.identifier.ciencia-id2F13-AAE0-3405
person.identifier.orcid0000-0001-9505-7576
person.identifier.orcid0000-0003-3689-4993
person.identifier.orcid0000-0002-5059-3196
person.identifier.orcid0000-0002-0760-3184
person.identifier.orcid0000-0001-9354-3298
person.identifier.ridH-9804-2015
person.identifier.ridF-5696-2013
person.identifier.scopus-author-id6504233850
person.identifier.scopus-author-id7102933404
person.identifier.scopus-author-id7004483898
person.identifier.scopus-author-id26424779900
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationa82fab55-0301-4487-9deb-1441e5ab4346
relation.isAuthorOfPublication46d2589f-fbfa-4a89-a10c-e5a3bbd23414
relation.isAuthorOfPublication8ba2c8c6-4743-481a-8ed7-242b64a879e2
relation.isAuthorOfPublicationba387c7d-27c9-4016-895c-b35597e91ebc
relation.isAuthorOfPublicationf27b8827-f982-4735-9717-6e9167bcd172
relation.isAuthorOfPublication.latestForDiscoverya82fab55-0301-4487-9deb-1441e5ab4346

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