Synergism between non-thermal plasma and photocatalysis Implicationsin the post discharge of ozone at a pilot scale in a catalytic fixed-bed reactor - INSTITUT DES SCIENCES CHIMIQUES DE RENNES Accéder directement au contenu
Article Dans Une Revue Applied Catalysis B: Environmental Année : 2019

Synergism between non-thermal plasma and photocatalysis Implicationsin the post discharge of ozone at a pilot scale in a catalytic fixed-bed reactor

A.A. Assadi
M. Guiza
  • Fonction : Auteur
S. Loganathan
  • Fonction : Auteur
W. Aboussaoud
  • Fonction : Auteur
A. Ouederni
  • Fonction : Auteur
S. Rtimi
  • Fonction : Auteur correspondant

Résumé

This study focuses on Butyraldehyde (C4H8O) degradation using catalytic ozonation oriented to the optimization of non-thermal plasma/photocatalytic coupled processes. After the first oxidation by non-thermal plasma coupled photocatalytic processes, a second oxidative step leading to the decomposition of the residual Butyraldehyde by Ozone is catalyzed by Mordenite, ZSM-5 and γ-alumina. The Butyraldehyde degradation in the presence of Ozone under operational parameters such as plasma energy, Butyraldehyde inlet concentration, relative humidity and the height of the catalytic bed are reported in detail. The optimum operating conditions found were Qair = 1 m3 h-1, [C4H8O] = 100 mg m-3, SIEplasma = 18 JL-1, for Butyraldehyde degradation mediated by ZSM-5. The formation of intermediate by-products was monitored during the degradation of Butyraldehyde in the presence of Ozone and ZSM-5 catalyst to suggest a degradation pathway. The coupling of catalytic ozonation by non-thermal plasma/photocatalysis lead to the total decomposition of Ozone when catalyzed by ZSM-5and presents a positive effect on the mineralization capacity. The pollutants degradation intermediates were identified by GC-MS and the oxidative states on the catalytic bed were characterized by XPS. © 2018 Elsevier B.V.
Fichier principal
Vignette du fichier
Saoud et al_2018_Synergism between non-thermal plasma and photocatalysis.pdf (1.19 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01905109 , version 1 (14-12-2018)

Identifiants

Citer

W.A. Saoud, A.A. Assadi, M. Guiza, S. Loganathan, A. Bouzaza, et al.. Synergism between non-thermal plasma and photocatalysis Implicationsin the post discharge of ozone at a pilot scale in a catalytic fixed-bed reactor. Applied Catalysis B: Environmental, 2019, 241, pp.227-235. ⟨10.1016/j.apcatb.2018.09.029⟩. ⟨hal-01905109⟩
220 Consultations
317 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More