Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Photocatalytic Degradation of Diclofenac by HydroxyapatiteTiO2 Composite Material: Identification of Transformation Products and Assessment of Toxicity |
| Abstract | Diclofenac (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 investigation of 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. |
| Source | Materials (Basel) 11 (9) |
| Keywords | diclofenachydroxyapatitephotocatalysistransformation productstoxicity |
| Journal | Materials (Basel) |
| Editor | Molecular Diversity Preservation International, Basel, |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.3390/ma11091779 |
| Authors | Murgolo, Sapia; Moreira, Irina S.; Piccirillo, Clara; Castro, Paula M. L.; Ventrella, Gianrocco; Cocozza, Claudio; Mascolo, Giuseppe |
| Text | 397352 2018 10.3390/ma11091779 ISI Web of Science WOS 000446395200295 diclofenac hydroxyapatite photocatalysis transformation products toxicity Photocatalytic Degradation of Diclofenac by HydroxyapatiteTiO2 Composite Material Identification of Transformation Products and Assessment of Toxicity Murgolo, Sapia; Moreira, Irina S.; Piccirillo, Clara; Castro, Paula M. L.; Ventrella, Gianrocco; Cocozza, Claudio; Mascolo, Giuseppe CNR; Univ Catolica Portuguesa Porto; CNR; Univ Bari Diclofenac 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 investigation of 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. 11 Published version Articolo in rivista Molecular Diversity Preservation International 1996 1944 Materials Basel Materials Basel Materials Basel Materials. Basel sapia.murgolo MURGOLO SAPIA clara.piccirillo PICCIRILLO CLARA giuseppe.mascolo MASCOLO GIUSEPPE |