Please use this identifier to cite or link to this item: https://scholarhub.balamand.edu.lb/handle/uob/1576
Title: 17 alpha ethinylestradiol EE2 photocatalytic degradation: adsorption isotherms and kinetics
Authors: Koumeir, Diala
Guillard, Chantal
Guittonneau, Sylvie
Zakhem, Henri El 
Affiliations: Department of Chemical Engineering 
Issue Date: 2015
Part of: International journal of science environment and technology
Volume: 4
Issue: 3
Start page: 553
End page: 571
Abstract: 
In the present study, the degradation kinetics and mineralization of EE2 by the TiO2 photocatalysis are examined in terms of UV absorbance of a wide range of initial EE2 concentration (mg.L-1) and photocatalyst loadings (0.5-24 µmol.L-1) in a reactor system. Different parameters are studied and described in details, such as adsorption under dark and UV-A conditions, photolysis, kinetics of degradation, ions impact on the isotherm adsorption of EE2, as well as the photocatalytic degradation. EE2 adsorption isotherm follows the Langmuir model. The photocatalytic oxidation kinetic of EE2 is described by the Langmuir–Hinshelwood model, and it follows a kinetic of order one for concentrations that are below 6 µmol.L−1, and then it reaches a plateau. For EE2, the coverage rates of the TiO2 surface in the dark and under UV exposure are different. Total Organic Carbon (TOC) analysis shows a complete mineralization of intermediate products.
URI: https://scholarhub.balamand.edu.lb/handle/uob/1576
Open URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Chemical Engineering

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