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Briche S, Derqaoui M, Belaiche M, El Mouchtari EM, Wong-Wah-Chung P, Rafqah S. Nanocomposite material from TiO 2 and activated carbon for the removal of pharmaceutical product sulfamethazine by combined adsorption/photocatalysis in aqueous media. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:25523-25534. [PMID: 32347507 DOI: 10.1007/s11356-020-08939-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 04/17/2020] [Indexed: 05/27/2023]
Abstract
This work was dedicated to the elaboration of new composite materials based on activated carbon and titanium oxide as an ecological solution for the cleaning of water contaminated with pharmaceutical pollutants. Such new composite materials allowed the combining of adsorption and photocatalytic process, which allows a cleaning process that is low cost making them promising materials. The functionalization of the surface of activated carbon (AC) by TiO2 nanoparticles forms the core of the nanocomposite material. This was accomplished using sol-gel process with molar ratios Rn (nTi/nAC) in the range of 1/10 to 7/10 followed by a calcination step (400 °C, N2, 2 h). Using various characterization techniques, AC surface functionalization was confirmed and the formation of a TiO2 coating on the AC was noticed with TiO2 under its unique anatase crystallographic form. The study of adsorption and photocatalytic degradation of the sulfamethazine antibiotic demonstrated that the most photoactive nanocomposite corresponds to the one with Rn = 0.5. Freundlich model was proved to be a perfect fit with the experimental results stating that the adsorption is of multilayer nature on the surface of the adsorbent and with interactions between the pollutants adsorbed on its surface. The photocatalytic degradation of the remaining pharmaceutical pollutant in the solution was evidenced and essentially occurred through the involvement of hydroxyl radicals formed by the excitation of the photocatalyst. The formation of the photoproducts analyzed by the LC/MS technique implies the splitting of the sulfonamide bridge, and by the hydroxylation of the aromatic ring and the pyrimidine group.
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Affiliation(s)
- Samir Briche
- Département Stockage de l'Energie et Revêtements Multifonctionnels (SERM), Moroccan Foundation for Advanced Science, Innovation and Research (MAScIR), Rue Mohamed El Jazouli, Madinat Al Irfane, 10100, Rabat, Morocco
| | - Mohammed Derqaoui
- Département Stockage de l'Energie et Revêtements Multifonctionnels (SERM), Moroccan Foundation for Advanced Science, Innovation and Research (MAScIR), Rue Mohamed El Jazouli, Madinat Al Irfane, 10100, Rabat, Morocco
- Laboratoire de Chimie Analytique et Moléculaire (LCAM), Département de Chimie, Faculté Polydisciplinaire de Safi, Université Cadi Ayyad, Sidi Bouzid, B.P. 4162, 46000, Safi, Morocco
| | - Mohammed Belaiche
- Département Stockage de l'Energie et Revêtements Multifonctionnels (SERM), Moroccan Foundation for Advanced Science, Innovation and Research (MAScIR), Rue Mohamed El Jazouli, Madinat Al Irfane, 10100, Rabat, Morocco
| | - El Mountassir El Mouchtari
- Laboratoire de Chimie Analytique et Moléculaire (LCAM), Département de Chimie, Faculté Polydisciplinaire de Safi, Université Cadi Ayyad, Sidi Bouzid, B.P. 4162, 46000, Safi, Morocco
| | - Pascal Wong-Wah-Chung
- Aix Marseille Université, CNRS, LCE, UMR 7376, 13545, Aix en Provence Cedex 4, France
| | - Salah Rafqah
- Laboratoire de Chimie Analytique et Moléculaire (LCAM), Département de Chimie, Faculté Polydisciplinaire de Safi, Université Cadi Ayyad, Sidi Bouzid, B.P. 4162, 46000, Safi, Morocco.
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Dinesh GK, Chakma S. Degradation kinetic study of cholesterol lowering statin drug using sono-hybrid techniques initiated by metal-free polymeric catalyst. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.04.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Lorenzoni R, Cordenonsi LM, Davies S, Antonow MB, Medina Diedrich AS, Santos CG, Vitalis GS, Garrastazu G, Buttini F, Sonvico F, Gomes P, Raffin RP. Lipid-core nanocapsules are an alternative to the pulmonary delivery and to increase the stability of statins. J Microencapsul 2019; 36:317-326. [PMID: 31159613 DOI: 10.1080/02652048.2019.1624849] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Aims: Lipid-core nanocapsules (LNCs) loaded with simvastatin (SV, SV-LNC) or lovastatin (LV, LV-LNC) were formulated for pulmonary administration. Methods: The LNC suspensions were characterized physicochemically, their stability was evaluated, and drug delivery by the pulmonary route was tested in vitro. Results: The loaded LNCs had a particle size close to 200 nm, a low polydispersity index, and a zeta potential around -20 mV. The encapsulation efficiency was high for SV (99.21 ± 0.7%) but low for LV (20.34 ± 1.2%). SV release from nanocapsules was slower than it was from SV in solution, with a monoexponential release profile, and the drug emitted and aerosol output rate was higher for SV-LNCs (1.58 µg/s) than for SV in suspension (0.54 µg/s). Conclusions: SV-LNCs had a median aerodynamic diameter of 3.51 µm and a highly respirable fraction (61.9%), indicating that nanoparticles are a suitable system for efficient delivery of simvastatin to the lung.
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Affiliation(s)
- Ricardo Lorenzoni
- a Nanoscience Post-Graduation Program , Franciscan University , Santa Maria , Rio Grande do Sul , Brazil
| | - Leticia Malgarim Cordenonsi
- a Nanoscience Post-Graduation Program , Franciscan University , Santa Maria , Rio Grande do Sul , Brazil.,b Pharmaceutical Sciences Post-Graduation Program , Federal University of Rio Grande do Sul State , Porto Alegre , Brazil
| | - Samuel Davies
- a Nanoscience Post-Graduation Program , Franciscan University , Santa Maria , Rio Grande do Sul , Brazil.,b Pharmaceutical Sciences Post-Graduation Program , Federal University of Rio Grande do Sul State , Porto Alegre , Brazil
| | - Michelli Barcelos Antonow
- a Nanoscience Post-Graduation Program , Franciscan University , Santa Maria , Rio Grande do Sul , Brazil.,c Pharmaceutical Nanotechnology Post-Graduation Program , Federal University of Rio Grande do Sul State , Porto Alegre , Brazil
| | | | - Cayane Genro Santos
- a Nanoscience Post-Graduation Program , Franciscan University , Santa Maria , Rio Grande do Sul , Brazil
| | - Graciela Schneider Vitalis
- a Nanoscience Post-Graduation Program , Franciscan University , Santa Maria , Rio Grande do Sul , Brazil
| | | | - Francesca Buttini
- d Faculty of Pharmacy , Universitá degli Studi di Parma , Parma , Italy
| | - Fabio Sonvico
- d Faculty of Pharmacy , Universitá degli Studi di Parma , Parma , Italy
| | - Patrícia Gomes
- a Nanoscience Post-Graduation Program , Franciscan University , Santa Maria , Rio Grande do Sul , Brazil
| | - Renata Platcheck Raffin
- a Nanoscience Post-Graduation Program , Franciscan University , Santa Maria , Rio Grande do Sul , Brazil
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Bagheri S, TermehYousefi A, Do TO. Photocatalytic pathway toward degradation of environmental pharmaceutical pollutants: structure, kinetics and mechanism approach. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00468k] [Citation(s) in RCA: 184] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
During the last few years, the presence of pharmaceuticals in the aquatic environment, classified as so-called emerging contaminants, has attracted attention from the scientific community.
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Affiliation(s)
- Samira Bagheri
- Department of Chemical Engineering
- Laval University
- Québec City
- Canada
| | | | - Trong-On Do
- Department of Chemical Engineering
- Laval University
- Québec City
- Canada
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Machado TC, Pizzolato TM, Arenzon A, Segalin J, Lansarin MA. Photocatalytic degradation of rosuvastatin: analytical studies and toxicity evaluations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 502:571-577. [PMID: 25300021 DOI: 10.1016/j.scitotenv.2014.09.076] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Revised: 09/22/2014] [Accepted: 09/22/2014] [Indexed: 06/04/2023]
Abstract
Photocatalytic degradation of rosuvastatin, which is a drug that has been used to reduce blood cholesterol levels, was studied in this work employing ZnO as catalyst. The experiments were carried out in a temperature-controlled batch reactor that was irradiated with UV light. Preliminary the effects of the photocatalyst loading, the initial pH and the initial rosuvastatin concentration were evaluated. The experimental results showed that rosuvastatin degradation is primarily a photocatalytic process, with pseudo-first order kinetics. The byproducts that were generated during the oxidative process were identified using nano-ultra performance liquid chromatography tandem mass spectrometry (nano-UPLC-MS/MS) and acute toxicity tests using Daphnia magna were done to evaluate the toxicity of the untreated rosuvastatin solution and the reactor effluent.
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Affiliation(s)
- Tiele Caprioli Machado
- Chemical Engineering Department, Federal University of Rio Grande do Sul, Rua Engenheiro Luiz Englert s/n, CEP: 90040-040 Porto Alegre, RS, Brazil.
| | - Tânia Mara Pizzolato
- Chemical Institute, Federal University of Rio Grande do Sul, Avenida Bento Gonçalves, 9500, CEP: 91501-970 Porto Alegre, RS, Brazil
| | - Alexandre Arenzon
- Ecology Center, Federal University of Rio Grande do Sul, Avenida Bento Gonçalves, 9500, CEP: 91501-970 Porto Alegre, RS, Brazil
| | - Jeferson Segalin
- Biotechnology Center, Federal University of Rio Grande do Sul, Avenida Bento Gonçalves, 9500, CEP: 91501-970 Porto Alegre, RS, Brazil
| | - Marla Azário Lansarin
- Chemical Engineering Department, Federal University of Rio Grande do Sul, Rua Engenheiro Luiz Englert s/n, CEP: 90040-040 Porto Alegre, RS, Brazil
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Abstract
AbstractPharmaceutical compounds have been detected in the environment and potentially arise from the discharge of excreted and improperly disposed medication from sewage treatment facilities. In order to minimize environmental exposure of pharmaceutical residues, a potential technique to remove pharmaceuticals from water is the use of an advanced oxidation process (AOP) involving titanium dioxide (TiO2) photocatalysis. To evaluate the extent UV/TiO2 processes have been studied for pharmaceutical degradation, a literature search using the keywords ‘titanium dioxide’, ‘photocatalysis’, ‘advanced oxidation processes’, ‘pharmaceuticals’ and ‘degradation’ were used in the ISI Web of Knowledge TM, Scopus TM and ScienceDirect TM databases up to and including articles published on 23 November 2011. The degradation rates of pharmaceuticals under UV/TiO2 treatment were dependent on type and amount of TiO2 loading, pharmaceutical concentration, the presence of electron acceptors and pH. Complete mineralization under particular experimental conditions were reported for some pharmaceuticals; however, some experiments reported evolution of toxic intermediates during the photocatalytic process. It is concluded that the UV/TiO2 system is potentially a feasible wastewater treatment process, but careful consideration of the treatment time, the loading and the type of TiO2 (doped vs. undoped) used for a particular pharmaceutical is necessary for a successful application (198 words).
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Sobotta L, Kachlicki P, Marczak L, Kryjewski M, Mielcarek J. Photochemical activity of glenvastatin, a HMG-CoA reductase inhibitor. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2011.08.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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