Photo-assisted ozonation of cefuroxime with solar radiation in a CPC pilot plant. Kinetic parameters determination

Rafael R. Solís, Chávez, Ana M., Monago Maraña, Olga, Muñoz de la Peña, Arsenio y Beltrán, Fernando J. . (2021) Photo-assisted ozonation of cefuroxime with solar radiation in a CPC pilot plant. Kinetic parameters determination. Separation and Purification Technology 266 (2021) 118514.

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Título Photo-assisted ozonation of cefuroxime with solar radiation in a CPC pilot plant. Kinetic parameters determination
Autor(es) Rafael R. Solís
Chávez, Ana M.
Monago Maraña, Olga
Muñoz de la Peña, Arsenio
Beltrán, Fernando J.
Materia(s) Ciencias
Abstract The combination of ozone and solar radiation can be considered an effective technology as advanced oxidation process, AOP, for addressing the removal of harmful contaminants of emerging concern in water. Cefuroxime is an example of an antibiotic whose presence may result in a problem if not conveniently removed from the water. Cefuroxime oxidation has been performed employing photolytic ozonation in an autonomous pilot plant, consisting of a solar collector photo-reactor with ozone feeding, solar panel cells, and batteries for energy demands. Firstly, the kinetics of cefuroxime ozonation has been deeply studied in an agitation cell reactor. The stoichiometric ozonation ratio was estimated as zO3 = 1.00 ± 0.06 (O3 mol per cefuroxime mol) and the second-order rate constant in the range 1.50 × 106 – 4.69 × 106 M−1 s−1 for the non-dissociated and dissociated, respectively, cefuroxime molecule. The oxidation intermediates identified included hydroxylation of the initial molecule, attack to the secondary amide group and oxidation of the bi-substituted sulfide position. Secondly, the simultaneous application of ozone and solar radiation in the CPC pilot plant enhanced the degradation of cefuroxime. The kinetics in the CPC reactor was simulated and the importance of the hydroxyl radical over ozonation and photolysis was confirmed, 55% of HO• contribution. Also, over 55% of mineralization was observed during photolytic ozonation in wastewater matrix whereas single ozonation only was able to partially oxidize the initial organic content to short organic acids (formic, acetic, and oxalic) that were accumulated in the water.
Palabras clave ozone
photolytic ozonation
cefuroxime
intermediates
CPC pilot plant
Editor(es) Elsevier
Fecha 2021-02-18
Formato application/pdf
Identificador bibliuned:DptoCA-FCIE-Articulos-Omonago-0007
http://e-spacio.uned.es/fez/view/bibliuned:DptoCA-FCIE-Articulos-Omonago-0007
DOI - identifier https://doi.org/10.1016/j.seppur.2021.118514
ISSN - identifier 1383-5866 - eISSN 1873-3794
Nombre de la revista Separation and Purification Technology
Número de Volumen 266
Publicado en la Revista Separation and Purification Technology 266 (2021) 118514.
Idioma eng
Versión de la publicación acceptedVersion
Tipo de recurso Article
Derechos de acceso y licencia http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
Tipo de acceso Acceso abierto
Notas adicionales The registered version of this article, first published in Separation and Purification Technology, is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.seppur.2021.118514
Notas adicionales La versión registrada de este artículo, publicado por primera vez en Separation and Purification Technology, está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.seppur.2021.118514

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Creado: Tue, 13 Feb 2024, 06:29:18 CET