Degradation of the mixture of the ketoprofen, meloxicam and tenoxicam drugs using TiO2/metal photocatalysers supported in polystyrene packaging waste

The solution mixture of the non-steroidal anti-inflammatory drugs ketoprofen, meloxicam and tenoxicam was degraded through systems, composed of different photocatalysts based on TiO2 (Fe and Cu) and the hydrogen peroxide oxidant. The monitoring was performed by UV-Vis spectroscopy. Under sunlight ra...

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Autores principales:	Maressa Maria de Melo Santos Moura, Victor Estolano Lima, Antônio Acacio de Melo Neto, Alex Leandro Andrade de Lucena, Daniella Carla Napoleão, Marta Maria M. B. Duarte
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	heterogeneous photocatalysis ketoprofen meloxicam tenoxicam Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/8ecd897843334fd1b9a3d42845482ed0
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spelling	oai:doaj.org-article:8ecd897843334fd1b9a3d42845482ed02021-11-06T10:48:03ZDegradation of the mixture of the ketoprofen, meloxicam and tenoxicam drugs using TiO2/metal photocatalysers supported in polystyrene packaging waste0273-12231996-973210.2166/wst.2021.025https://doaj.org/article/8ecd897843334fd1b9a3d42845482ed02021-02-01T00:00:00Zhttp://wst.iwaponline.com/content/83/4/863https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732The solution mixture of the non-steroidal anti-inflammatory drugs ketoprofen, meloxicam and tenoxicam was degraded through systems, composed of different photocatalysts based on TiO2 (Fe and Cu) and the hydrogen peroxide oxidant. The monitoring was performed by UV-Vis spectroscopy. Under sunlight radiation, a reduction in peaks was observed with the use of impregnated photocatalysts. After 60 min, the sun/H2O2/Fe-TiO2 system reached degradations of 46.5% and 93.2% at 260 and 367 nm, respectively, and was selected for further studies. The degradation kinetic reached 92 and 96% of degradation after 180 min, for the λ of 260 and 367 nm, respectively. The kinetic curve could be represented by the empirical model proposed by Nichela and co-authors, indicating that besides the heterogeneous photocatalysis that occurs at the surface of the TiO2 there is also the joint effect of the photo-Fenton process. After the treatment, there was no toxicity to cress and lettuce seeds. However, a sensitivity of the thyme seeds to the compounds formed during the treatment was verified. After the fifth treatment cycle, the supported photocatalyst showed degradation higher than 82%. These results indicate that this system is suitable for the treatment of effluents containing pharmaceutical compounds.Maressa Maria de Melo Santos MouraVictor Estolano LimaAntônio Acacio de Melo NetoAlex Leandro Andrade de LucenaDaniella Carla NapoleãoMarta Maria M. B. DuarteIWA Publishingarticleheterogeneous photocatalysisketoprofenmeloxicamtenoxicamEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 4, Pp 863-876 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heterogeneous photocatalysis ketoprofen meloxicam tenoxicam Environmental technology. Sanitary engineering TD1-1066
spellingShingle	heterogeneous photocatalysis ketoprofen meloxicam tenoxicam Environmental technology. Sanitary engineering TD1-1066 Maressa Maria de Melo Santos Moura Victor Estolano Lima Antônio Acacio de Melo Neto Alex Leandro Andrade de Lucena Daniella Carla Napoleão Marta Maria M. B. Duarte Degradation of the mixture of the ketoprofen, meloxicam and tenoxicam drugs using TiO2/metal photocatalysers supported in polystyrene packaging waste
description	The solution mixture of the non-steroidal anti-inflammatory drugs ketoprofen, meloxicam and tenoxicam was degraded through systems, composed of different photocatalysts based on TiO2 (Fe and Cu) and the hydrogen peroxide oxidant. The monitoring was performed by UV-Vis spectroscopy. Under sunlight radiation, a reduction in peaks was observed with the use of impregnated photocatalysts. After 60 min, the sun/H2O2/Fe-TiO2 system reached degradations of 46.5% and 93.2% at 260 and 367 nm, respectively, and was selected for further studies. The degradation kinetic reached 92 and 96% of degradation after 180 min, for the λ of 260 and 367 nm, respectively. The kinetic curve could be represented by the empirical model proposed by Nichela and co-authors, indicating that besides the heterogeneous photocatalysis that occurs at the surface of the TiO2 there is also the joint effect of the photo-Fenton process. After the treatment, there was no toxicity to cress and lettuce seeds. However, a sensitivity of the thyme seeds to the compounds formed during the treatment was verified. After the fifth treatment cycle, the supported photocatalyst showed degradation higher than 82%. These results indicate that this system is suitable for the treatment of effluents containing pharmaceutical compounds.
format	article
author	Maressa Maria de Melo Santos Moura Victor Estolano Lima Antônio Acacio de Melo Neto Alex Leandro Andrade de Lucena Daniella Carla Napoleão Marta Maria M. B. Duarte
author_facet	Maressa Maria de Melo Santos Moura Victor Estolano Lima Antônio Acacio de Melo Neto Alex Leandro Andrade de Lucena Daniella Carla Napoleão Marta Maria M. B. Duarte
author_sort	Maressa Maria de Melo Santos Moura
title	Degradation of the mixture of the ketoprofen, meloxicam and tenoxicam drugs using TiO2/metal photocatalysers supported in polystyrene packaging waste
title_short	Degradation of the mixture of the ketoprofen, meloxicam and tenoxicam drugs using TiO2/metal photocatalysers supported in polystyrene packaging waste
title_full	Degradation of the mixture of the ketoprofen, meloxicam and tenoxicam drugs using TiO2/metal photocatalysers supported in polystyrene packaging waste
title_fullStr	Degradation of the mixture of the ketoprofen, meloxicam and tenoxicam drugs using TiO2/metal photocatalysers supported in polystyrene packaging waste
title_full_unstemmed	Degradation of the mixture of the ketoprofen, meloxicam and tenoxicam drugs using TiO2/metal photocatalysers supported in polystyrene packaging waste
title_sort	degradation of the mixture of the ketoprofen, meloxicam and tenoxicam drugs using tio2/metal photocatalysers supported in polystyrene packaging waste
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/8ecd897843334fd1b9a3d42845482ed0
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Degradation of the mixture of the ketoprofen, meloxicam and tenoxicam drugs using TiO2/metal photocatalysers supported in polystyrene packaging waste

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