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Artículo

A kinetic study for the Fenton and photo-Fenton paracetamol degradation in an annular photoreactor

Audino, Francesca; Conte, Leandro OscarIcon ; Schenone, Agustina VioletaIcon ; Pérez-Moya, Montserrat; Graells, Moisès; Alfano, Orlando MarioIcon
Fecha de publicación: 02/2019
Editorial: Springer Heidelberg
Revista: Environmental Science and Pollution Research
ISSN: 0944-1344
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ingeniería de Procesos Químicos

Resumen

A kinetic model describing Fenton and photo-Fenton degradation of paracetamol (PCT) and consumption of hydrogen peroxide (H 2 O 2 ) was proposed. A set of Fenton and photo-Fenton experiments (18 runs in total) was performed by fixing the initial concentration of PCT to 40 mg L −1 and varying the initial concentrations of H 2 O 2 and ferrous ion, Fe 2+ . The experimental set-up was a well-stirred annular photoreactor equipped with an actinic BL TL-DK 36 W/10 1SL lamp. Experimental results highlighted that PCT is no more detected by HPLC analysis within a minimum reaction time of 2.5 and a maximum reaction time of 15.0 min. Besides, a maximum conversion of total organic carbon (TOC) of 68.5% was observed after 75 min of reaction in case of using UV radiation and the highest concentrations of the Fenton reagents. The experimental data were used to fit the kinetic model. The radiation field inside the reactor was taken into account through the local volumetric rate of photon absorption, evaluated by assuming a line source model with spherical and isotropic emission. The kinetic parameters were estimated by using a non-linear least-squares regression procedure and root mean square errors (RMSE) were calculated in order to validate the feasibility of the proposed model. A good agreement between experimental and predicted data was observed and the lowest values of RMSE resulted in 5.84 and 9.59% for PCT and H 2 O 2 normalized concentrations, respectively.
Palabras clave: ANNULAR PHOTOREACTOR , AOPS , DESIGN OF EXPERIMENTS , KINETIC MODELING , LVRPA , PHARMACEUTICALS
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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 2.5 Unported (CC BY 2.5)
Identificadores
URI: http://hdl.handle.net/11336/117343
URL: http://link.springer.com/10.1007/s11356-018-3098-4
DOI: http://dx.doi.org/10.1007/s11356-018-3098-4
Colecciones
Articulos(INTEC)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Citación
Audino, Francesca; Conte, Leandro Oscar; Schenone, Agustina Violeta; Pérez-Moya, Montserrat; Graells, Moisès; et al.; A kinetic study for the Fenton and photo-Fenton paracetamol degradation in an annular photoreactor; Springer Heidelberg; Environmental Science and Pollution Research; 26; 5; 2-2019; 4312-4323
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