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Title: Modelling the photo-Fenton oxidation of the pharmaceutical paracetamol in water including the effect of photon absorption (VRPA)
Authors: Cabrera Reina, A.
Santos-Juanes, L.
Garcia Sanchez, J.L.
Casas Lopez, J.L.
Maldonado Rubio, M.I.
Li Puma, Gianluca
Sanchez Perez, J.A.
Keywords: Photo-Fenton
Modelling
VRPA
Paracetamol
Photoreactor
Issue Date: 2015
Publisher: © Elsevier
Citation: CABRERA REINA, A. ...et al., 2015. Modelling the photo-Fenton oxidation of the pharmaceutical paracetamol in water including the effect of photon absorption (VRPA). Applied Catalysis B-Environmental, 166, pp. 295-301.
Abstract: A new model is proposed for the photo-Fenton oxidation of water contaminants including the effect of photon absorption (volumetric rate of photon absorption, VRPA), the effect of the geometry of the reactor and the illuminated volume to total volume ratio (Ri) in the reaction system. Fe(III) was found to be the main species in the aqueous solution responsible for photon absorption provided that hydrogen peroxide was not totally consumed. Paracetamol was used as model pollutant at a concentration of 1 mM to validate the model. The illuminated part of the raceway reactor configuration (total length of 80 cm) was operated at two liquid depths (5.0 and 2.5 cm) equivalent to two irradiated reactor volumes (2 and 1 L) and using Ri ratios in the range 0.30–0.65, which changed the dark reactor volume. These values are commonly found in photo-Fenton pilot plants for water treatment and purification. The model successfully fitted the temporal evolution of the dissolved oxygen (O2) and the hydrogen peroxide (H2O2) concentrations and the evolution of the total organic carbon (TOC) in solution in both reactor geometries and for different illuminated volume to total volume ratios. The model can be easily extended to model other water contaminants and provides a robust method for process design, process control and optimization.
Sponsor: This research was supported by the Junta de Andalucía (Andalusian Regional Government)(P10-RNM-05951 and P12-RNM-01437) and the European Regional Development Fund (ERDF).
Version: Accepted for publication
DOI: 10.1016/j.apcatb.2014.11.023
URI: https://dspace.lboro.ac.uk/2134/19063
Publisher Link: http://dx.doi.org/10.1016/j.apcatb.2014.11.023
ISSN: 0926-3373
Appears in Collections:Published Articles (Chemical Engineering)

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