LAPSE:2020.0028
Published Article
LAPSE:2020.0028
Removal of an Ethoxylated Alkylphenol by Adsorption on Zeolites and Photocatalysis with TiO2/Ag
Claudia Aguilar Ucán, Mohamed Abatal, Carlos Montalvo Romero, Francisco Anguebes Franseschi, Miguel Angel Ramirez Elias, Denis Cantú Lozano
January 2, 2020
Two advanced removal methods (adsorption and photocatalysis) were compared for the elimination of an ethoxylated alkylphenol (nonylphenol polyethylene glycol, NPEG). For the adsorption process, zeolites were used in their natural state, and the process was characterized by DRX (X-ray diffraction) and SEM−EDS (Scanning electron microscopy). The analysis of the results of the adsorption kinetics was carried out using different isotherms to interpret the removal capacity of zeolites. The Temkin kinetic model better predicted the experimental data and was satisfactorily adjusted to models of pseudo-second order (PSO). On the other hand, for photocatalysis, nano-particles of Ag (silver) were deposited on titanium oxide (TiO2) Degussa-P25 by photo-deposition, and the catalyst was characterized by diffuse reflectance and SEM−EDS. The data obtained using the two removal techniques were analyzed by UV−Vis (ultraviolet-visible spectrophotometry) and total organic carbon (TOC). The kinetic data were compared. The photocatalytic process showed the highest efficiency in the removal of NPEG, corresponding to >80%, while the efficiency of the adsorption process was <60%. This was attributed to the recalcitrant and surfactant nature of NPEG.
Keywords
ethoxylated alkylphenol, heterogeneous photocatalysis, water pollution, zeolite adsorption
Suggested Citation
Ucán CA, Abatal M, Romero CM, Franseschi FA, Elias MAR, Lozano DC. Removal of an Ethoxylated Alkylphenol by Adsorption on Zeolites and Photocatalysis with TiO2/Ag. (2020). LAPSE:2020.0028
Author Affiliations
Ucán CA: Faculty of Chemical Sciences, Autonomous University of Carmen, Street 56 No. 4, Carmen City, Campeche C.P 24180, Mexico [ORCID]
Abatal M: Faculty of Engineering, Autonomous University of Carmen, Central Avenue S/N, Maya World, Carmen City, Campeche C.P 24115, Mexico [ORCID]
Romero CM: Faculty of Chemical Sciences, Autonomous University of Carmen, Street 56 No. 4, Carmen City, Campeche C.P 24180, Mexico
Franseschi FA: Faculty of Chemical Sciences, Autonomous University of Carmen, Street 56 No. 4, Carmen City, Campeche C.P 24180, Mexico
Elias MAR: Faculty of Chemical Sciences, Autonomous University of Carmen, Street 56 No. 4, Carmen City, Campeche C.P 24180, Mexico
Lozano DC: National Tecnologist of México, East 9, Emiliano Zapata, Orizaba VER 94320, Mexico
Journal Name
Processes
Volume
7
Issue
12
Article Number
E889
Year
2019
Publication Date
2019-12-01
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr7120889, Publication Type: Journal Article
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LAPSE:2020.0028
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doi:10.3390/pr7120889
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Jan 2, 2020
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Calvin Tsay
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