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No. de sistema: 000060495

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245 0 0 a| Degradation of anti-inflammatory drugs in municipal wastewater by heterogeneous photocatalysis and electro-Fenton process
506 _ _ a| Disponible para usuarios de ECOSUR con su clave de acceso
520 1 _ a| Non-steroidal anti-inflammatory drugs (NSAID) are compounds frequently found in municipal wastewater and their degradation by conventional wastewater treatment plants (WWTP) is generally incomplete. This study compared the efficiency of two advanced oxidation processes (AOP), namely heterogeneous photocatalysis (HP) and electro-Fenton (EF), in the degradation of a mixture of common NSAID (diclofenac, ibuprofen and naproxen) dissolved in either deionized water or effluent from a WWTP. Both processes were effective in degrading the NSAID mixture and the trend of degradation was as follows, diclofenac> naproxen> ibuprofen. EF with a current density of 40 mA cm−² and 0.3 mmol Fe²+ L−¹ was the most efficient process to mineralize the organic compounds, achieving up to 92% TOC removal in deionized water and 90% in the WWTP effluent after 3 h of reaction. HP with 1.4 g TiO2 L−¹ at pH 7 under sunlight, produced 85% TOC removal in deionized water and 39% in WWTP effluent also after 3 h treatment. The lower TOC removal efficiency shown by HP with the WWTP effluent was attributed mainly to the scavenging of reactive species by background organic matter in the wastewater. On the contrary, inorganic ions in the wastewater may produce oxidazing species during the EF process, which contributes to a higher degradation efficiency. EF is a promising option for the treatment of anti-inflammatory pharmaceuticals in municipal WWTP at competitive electrical energy efficiencies.
530 _ _ a| Disponible en línea
533 _ _ a| Reproducción electrónica en formato PDF
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
700 1 _ a| Villanueva Rodríguez, Minerva
e| autora
700 1 _ a| Bello Mendoza, Ricardo
e| autor
700 1 _ a| Hernández Ramírez, María Araceli
c| Dra.
e| autora
700 1 _ a| Ruiz Ruiz, Edgar J.
e| autor
773 0 _
t| Environmental Technology
g| Volumen 40, número 18 (2019), p. 2436-2445
x| 1479-487X
900 _ _ a| Solicítelo con su bibliotecario/a
902 _ _ a| BG
904 _ _ a| Junio 2020
905 _ _ a| Artecosur
905 _ _ a| Biblioelectrónica
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Degradation of anti-inflammatory drugs in municipal wastewater by heterogeneous photocatalysis and electro-Fenton process
Villanueva Rodríguez, Minerva (autora)
Bello Mendoza, Ricardo (autor)
Hernández Ramírez, María Araceli (autora)
Ruiz Ruiz, Edgar J. (autor)
Nota: Disponible en línea
Disponible para usuarios de ECOSUR con su clave de acceso
Contenido en: Environmental Technology. Volumen 40, número 18 (2019), p. 2436-2445. ISSN: 1479-487X
No. de sistema: 60495
Tipo: Artículo
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"Non-steroidal anti-inflammatory drugs (NSAID) are compounds frequently found in municipal wastewater and their degradation by conventional wastewater treatment plants (WWTP) is generally incomplete. This study compared the efficiency of two advanced oxidation processes (AOP), namely heterogeneous photocatalysis (HP) and electro-Fenton (EF), in the degradation of a mixture of common NSAID (diclofenac, ibuprofen and naproxen) dissolved in either deionized water or effluent from a WWTP. Both processes were effective in degrading the NSAID mixture and the trend of degradation was as follows, diclofenac> naproxen> ibuprofen. EF with a current density of 40 mA cm−² and 0.3 mmol Fe²+ L−¹ was the most efficient process to mineralize the organic compounds, achieving up to 92% TOC removal in deionized water and 90% in the WWTP effluent after 3 h of reaction. HP with 1.4 g TiO2 L−¹ at pH 7 under sunlight, produced 85% TOC removal in deionized water and 39% in WWTP effluent also after 3 h treatment. The lower TOC removal efficiency shown by HP with the WWTP effluent was attributed mainly to the scavenging of reactive species by background organic matter in the wastewater. On the contrary, inorganic ions in the wastewater may produce oxidazing species during the EF process, which contributes to a higher degradation efficiency. EF is a promising option for the treatment of anti-inflammatory pharmaceuticals in municipal WWTP at competitive electrical energy efficiencies."


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