Influence of Operational Parameters on Photocatalytic Degradation of Linuron in Aqueous TiO2 Pillared Montmorillonite Suspension

TiO2 pillared clay was prepared by intercalation of titan polyoxocation into interlamelar space of an Algerian montmorillonite and used for the photocatalytic degradation of the linuron herbicide as a target pollutant in aqueous solution. The TiO2 pillared montmorillonite (Mont-TiO2) was characteriz...

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Published in:Bulletin of chemical reaction engineering & catalysis Vol. 16; no. 3; pp. 673 - 685
Main Authors: Hadj Bachir, D., Boutoumi, Hocine, Khalaf, H., Eloy, Pierre, Schnee, J., Gaigneaux, E. M.
Format: Journal Article
Language:English
Published: Semarang Department of Chemical Engineering, Diponegoro University 01.09.2021
Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)
Subjects:
Aqueous solutions
Catalysts
Clay
Differential thermal analysis
Differential thermogravimetric analysis
Herbicides
Linuron
Montmorillonite
Parameters
Photocatalysis
Photodegradation
Photoelectrons
pillared clay
Pollutants
Porous materials
Room temperature
Surface stability
Thermal stability
Thermogravimetry
tio2 – montmorillonite
Titanium dioxide
water purification
X ray photoelectron spectroscopy
X-ray fluorescence
ISSN:1978-2993, 1978-2993
Online Access:Get full text
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Summary:TiO2 pillared clay was prepared by intercalation of titan polyoxocation into interlamelar space of an Algerian montmorillonite and used for the photocatalytic degradation of the linuron herbicide as a target pollutant in aqueous solution. The TiO2 pillared montmorillonite (Mont-TiO2) was characterized by X-ray photoelectron spectroscopy (XPS), X-Ray diffraction (XRD), X-Ray fluorescence (XRF), scanning electronic microscopy (SEM), thermogravimetry and differential thermal analysis (TG-DTA), Fourier transformed infra-red (FT-IR), specific area and porosity determinations. This physicochemical characterization pointed to successful TiO2 pillaring of the clay. The prepared material has porous structure and exhibit a good thermal stability as indicated by its surface area after calcination by microwave. The effects of operating parameters such as catalyst loading, initial pH of the solution and the pollutant concentration on the photocatalytic efficiency and COD removal  were evaluated. Under initial pH of the solution around seven, pollutant concentration of 10 mg/L and 2.5 g/L of catalyst at room temperature, the degradation efficiency and COD removal of linuron was best then the other operating conditions. It was observed that operational parameters play a major role in the photocatalytic degradation process. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
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ISSN:1978-2993
1978-2993
DOI:10.9767/bcrec.16.3.11108.673-685