Photocatalytic degradation of diclofenac by hydroxyapatite-TiO2 composite material: Identification of transformation products and assessment of toxicity
| Autor: | Sapia Murgolo, Claudio Cocozza, Clara Piccirillo, Gianrocco Ventrella, Paula M. L. Castro, Irina S. Moreira, Giuseppe Mascolo |
|---|---|
| Přispěvatelé: | Veritati - Repositório Institucional da Universidade Católica Portuguesa |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Diclofenac
Chemical structure Daphnia magna 02 engineering and technology 010501 environmental sciences lcsh:Technology 01 natural sciences Hydroxyapatite medicine General Materials Science Photocatalysis lcsh:Microscopy lcsh:QC120-168.85 0105 earth and related environmental sciences lcsh:QH201-278.5 biology Toxicity lcsh:T Chemistry 021001 nanoscience & nanotechnology biology.organism_classification 6. Clean water Acute toxicity Transformation products lcsh:TA1-2040 Degradation (geology) lcsh:Descriptive and experimental mechanics Sewage treatment lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:TK1-9971 medicine.drug Nuclear chemistry |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Materials Volume 11 Issue 9 Materials (Basel) 11 (2018). doi:10.3390/ma11091779 info:cnr-pdr/source/autori:Murgolo, Sapia; Moreira, Irina S.; Piccirillo, Clara; Castro, Paula M. L.; Ventrella, Gianrocco; Cocozza, Claudio; Mascolo, Giuseppe/titolo:Photocatalytic Degradation of Diclofenac by HydroxyapatiteTiO2 Composite Material: Identification of Transformation Products and Assessment of Toxicity/doi:10.3390%2Fma11091779/rivista:Materials (Basel)/anno:2018/pagina_da:/pagina_a:/intervallo_pagine:/volume:11 Materials, Vol 11, Iss 9, p 1779 (2018) |
| DOI: | 10.3390/ma11091779 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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