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Artículo

Degradation of nonylphenol ethoxylate-9 (NPE-9) by photochemical advanced oxidation technologies

De La Fuente, Luciana; Acosta, Tatiana; Babay, Paola Alejandra; Curutchet, Gustavo AndresIcon ; Candal, Roberto JorgeIcon ; Litter, Marta IreneIcon
Fecha de publicación: 08/2010
Editorial: American Chemical Society
Revista: Industrial & Engineering Chemical Research
ISSN: 0888-5885
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
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Resumen

The applicability of different photochemical advanced oxidation technologies (PAOTs), namely, direct UV-C photolysis, UV-C/H2O 2 and UV-A/TiO2 heterogeneous photocatalysis (HP), and photo-Fenton reactions (UV-A/H2O2/Fe2+, PF), for the degradation of 300 mg L-1 nonylphenol ethoxylate-9 (NPE-9) in water is described. Different kinetic regimes for each PAOT were found, and as a result, comparative efficiencies could be obtained only from final parameters such as NPE-9 conversion, TOC decrease, and aldehyde production after 3 h of treatment. The initial photonic efficiencies indicate, however, that UV-A processes make better use of photons than UV-C processes. Preliminary optimization of PF systems showed that the most efficient NPE-9/H 2O2/Fe2+ molar ratio was 1:1:0.5. Degradation products were partially investigated. Fortunately, toxic 4-nonylphenol was never found as a byproduct of the degradation after any of the treatments. Aldehydes were formed in all of the processes, but they appeared at a low extent in PF reactions. Therefore, PF treatments were considered to be the best degradation processes. © 2010 American Chemical Society.
Palabras clave: Photocatalysis , Photolysis , Kinetics , Degradation Products
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/53731
DOI: https://dx.doi.org/10.1021/ie901785j
URL: https://pubs.acs.org/doi/abs/10.1021/ie901785j
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Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
De La Fuente, Luciana; Acosta, Tatiana; Babay, Paola Alejandra; Curutchet, Gustavo Andres; Candal, Roberto Jorge; et al.; Degradation of nonylphenol ethoxylate-9 (NPE-9) by photochemical advanced oxidation technologies; American Chemical Society; Industrial & Engineering Chemical Research; 49; 15; 8-2010; 6909-6915
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