Modelling of adsorption/photodegradation phenomena on AC-TiO2 composite catalysts for water treatment detoxification

Telegang Chekem Cédric, Goetz V., Richardson Yohan, Plantard G., Blin Joël. 2019. Modelling of adsorption/photodegradation phenomena on AC-TiO2 composite catalysts for water treatment detoxification. Catalysis Today, 328 : 183-188.

https://doi.org/10.1016/j.cattod.2018.12.038

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

	Version Online first - Anglais Accès réservé aux personnels Cirad Utilisation soumise à autorisation de l'auteur ou du Cirad. Chekem et al. 2018 CATTOD.pdf Télécharger (1MB) \| Demander une copie
	Version publiée - Anglais Accès réservé aux personnels Cirad Utilisation soumise à autorisation de l'auteur ou du Cirad. 1-s2.0-S0920586118311040-main.pdf Télécharger (1MB) \| Demander une copie

Quartile : Q1, Sujet : ENGINEERING, CHEMICAL / Quartile : Q1, Sujet : CHEMISTRY, APPLIED / Quartile : Q1, Sujet : CHEMISTRY, PHYSICAL

Résumé : A numerical model has been established to get insight the mechanism of phenol removal from water through adsorption/photodegradation dual process over activated carbon titania composite catalysts (AC-TiO2). AC-TiO2 catalysts were obtained through a straightforward coating of a homemade AC with titania nanoparticles (TiO2-NPs), and their textural characterization revealed the presence of titania nanoparticles (TiO2-NPs) scattered at the external macroporosity of the microporous AC support material. A new mathematical approach were established to comprehensively take into account the bulk/por /surface diffusion rate of the pollutant before adsorption within the microporous catalyst, and then intrinsic photodegradation near the externally located and UV accessible TiO2-NPs. Under different experimental conditions and using catalysts of different titania contents, the simulated kinetics readily fit well the experimental profiles, suggesting the actual application of the model to describe the adsorption/photodegradation dual process driven by the composite catalysts.

Mots-clés Agrovoc : traitement des eaux usées, charbon actif, titane, nanoparticules, polluant, photolyse, modèle de simulation

Mots-clés libres : Activated carbon, TiO2 nanoparticles, Photocatalysis, Emerging Contaminants, Modeling

Classification Agris : P02 - Pollution
U10 - Informatique, mathématiques et statistiques

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Auteurs et affiliations