1. Modelling of adsorption/photodegradation phenomena on AC-TiO2 composite catalysts for water treatment detoxification
- Author
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Vincent Goetz, C. Telegang Chekem, Gael Plantard, Yohan Richardson, Joël Blin, Procédés, Matériaux et Energie Solaire (PROMES), Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS), Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM), EHT0202/002 study group, ExonHit Therapeutics SA, Université de Perpignan Via Domitia (UPVD), and Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Charbon actif ,Materials science ,Composite number ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,nanoparticules ,Catalysis ,[SPI]Engineering Sciences [physics] ,Adsorption ,medicine ,Traitement des eaux usées ,Photodegradation ,ComputingMilieux_MISCELLANEOUS ,Surface diffusion ,U10 - Informatique, mathématiques et statistiques ,Modèle de simulation ,General Chemistry ,Microporous material ,Polluant ,021001 nanoscience & nanotechnology ,Photolyse ,Titane ,6. Clean water ,0104 chemical sciences ,Chemical engineering ,Water treatment ,0210 nano-technology ,P02 - Pollution ,Activated carbon ,medicine.drug - Abstract
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.
- Published
- 2019
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