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Título: A KrCl exciplex flow-through photoreactor for degrading 4-chlorophenol:Experimental and modelling
Fecha de publicación: 2012
Fecha de defensa / creación: 2011
Editorial: Elsevier
Cita bibliográfica: Applied Catalysis B: Environmental, 117– 118 (2012) 194– 203
Materias relacionadas: CDU::6 - Ciencias aplicadas::66 - Ingeniería, tecnología e industria química. Metalurgia
Palabras clave: 4-chlorophenol
kinetic model
KrCl photoreactor
Resumen: A KrCl exciplex flow-through photoreactor has been used for the removal of 4- chlorophenol. UV/H2O2 and photo-Fenton processes were tested. Considering the degradation of the different compounds, the molar ratio H2O2:4-chlorophenol did not show a significant influence on 4-chlorophenol while an optimum ratio of 25:1 was established for the photoproducts. The presence of the Fenton reagent led to a considerable improvement in the photodegradation of both the substrate and by- products, and an optimum Fe2+ concentration of 5 mg L-1 was determined. Under these conditions, total degradation was attained for a range of substrate concentrations between 50 and 150 mg L-1 and for reaction volumes of 500 mL. A photodegradation mechanism was also proposed, based on the formation of two intermediate compounds that quickly degrade to the primary photoproducts previously identified. A kinetic model was developed and theoretical conversion values of the 4-chlorophenol and the photoproducts were compared with the experimental ones, reaching a high degree of agreement (xcalc = 0.9964 xexp, R2 = 0.9986) and validating the proposed model. This system simulation using relatively high reaction volumes and including the by-products in the kinetic equations represents a first approach with a view to operating in continuous or semi-continuous systems that allow the scaling up of the process.
Autor/es principal/es: M. Gomez
M.D. Murcia
J.L. Gomez
E. Gomez
M.F. Maximo
A. Garcia
Facultad/Departamentos/Servicios: Facultades, Departamentos, Servicios y Escuelas::Departamentos de la UMU::Ingeniería Química
URI: http://hdl.handle.net/10201/105545
DOI: https://doi.org/10.1016/j.apcatb.2012.01.017
Tipo de documento: info:eu-repo/semantics/article
Número páginas / Extensión: 46
Derechos: info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Descripción: © <2021>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ This document is the Accepted Manuscript version of a Published Work that appeared in final form in [Applied Catalysis B: Environmental]. To access the final edited and published work see [https://doi.org/10.1016/j.apcatb.2012.01.017].
Aparece en las colecciones:Artículos: Ingeniería Química

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