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Photocatalytic degradation of diclofenac by hydroxyapatite-TiO2 composite material: identification of transformation products and assessment of toxicity

2019-01-01Capítulo de livro Acesso aberto
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dc.contributor.authorMurgolo, Sapia
dc.contributor.authorMoreira, Irina S.
dc.contributor.authorPiccirillo, Clara
dc.contributor.authorCastro, Paula M. L.
dc.contributor.authorVentrella, Gianrocco
dc.contributor.authorCocozza, Claudio
dc.contributor.authorMascolo, Giuseppe
dc.date.accessioned2026-01-30T11:30:31Z
dc.date.available2026-01-30T11:30:31Z
dc.date.issued2019-01-01
dc.description.abstractDiclofenac (DCF) is one of the most detected pharmaceuticals in environmental water matrices and is known to be recalcitrant to conventional wastewater treatment plants. In this study, degradation of DCF was performed in water by photolysis and photocatalysis using a new synthetized photocatalyst based on hydroxyapatite and TiO2 (HApTi). A degradation of 95% of the target compound was achieved in 24 h by a photocatalytic treatment employing the HApTi catalyst in comparison to only 60% removal by the photolytic process. The investigationof photo-transformation products was performed by means of UPLC-QTOF/MS/MS, and for 14 detected compounds in samples collected during treatment with HApTi, the chemical structure was proposed. The determination of transformation product (TP) toxicity was performed by using different assays: Daphnia magna acute toxicity test, Toxi-ChromoTest, and Lactuca sativa and Solanum lycopersicum germination inhibition test. Overall, the toxicity of the samples obtained from the photocatalytic experiment with HApTi decreased at the end of the treatment, showing the potential applicability of the catalyst for the removal of diclofenac and the detoxification of water matrices.eng
dc.identifier.citationMurgolo, S., Moreira, I. S., Piccirillo, C., & Castro, P. M. L. et al. (2019). Photocatalytic degradation of diclofenac by hydroxyapatite-TiO2 composite material: identification of transformation products and assessment of toxicity. In R. Comparelli (Ed.), Application of photoactive nanomaterials in degradation of pollutants (pp. 26-41). MDPI.
dc.identifier.isbn9783039213825
dc.identifier.isbn9783039213818
dc.identifier.otherea17069f-5952-4071-8df0-4b3d37978b70
dc.identifier.urihttp://hdl.handle.net/10400.14/56808
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectDiclofenac
dc.subjectHydroxyapatite
dc.subjectPhotocatalysis
dc.subjectToxicity
dc.subjectTransformation products
dc.titlePhotocatalytic degradation of diclofenac by hydroxyapatite-TiO2 composite material: identification of transformation products and assessment of toxicityeng
dc.typebook part
dspace.entity.typePublication
oaire.citation.endPage41
oaire.citation.startPage26
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85

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