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Kinetics and Thermodynamics of Adsorption of Fluorides by ZeoSonNaFe

Published online by Cambridge University Press:  17 December 2019

Jessica López-Castillo ,
G. Macedo-Miranda ,
S. Martínez-Gallegos Open the ORCID record for S. Martínez-Gallegos [Opens in a new window] ,
E. Ordoñez ,
J. Illescas ,
P. Barragán-Peña  and
Guillermina Gómez-Beltrán
Jessica López-Castillo
Affiliation:
Tecnológico Nacional de México/ Instituto Tecnológico de Toluca, Av. Tecnológico, s/n, col. Agrícola Bellavista, Metepec, México, C. P. 52140
G. Macedo-Miranda*
Affiliation:
Tecnológico Nacional de México/ Instituto Tecnológico de Toluca, Av. Tecnológico, s/n, col. Agrícola Bellavista, Metepec, México, C. P. 52140
S. Martínez-Gallegos*
Affiliation:
Tecnológico Nacional de México/ Instituto Tecnológico de Toluca, Av. Tecnológico, s/n, col. Agrícola Bellavista, Metepec, México, C. P. 52140
E. Ordoñez
Affiliation:
Instituto Nacional de investigaciones nucleares, Carretera México-Toluca s/n, La Marquesa, Ocoyoacac México, C.P. 52750
J. Illescas
Affiliation:
Tecnológico Nacional de México/ Instituto Tecnológico de Toluca, Av. Tecnológico, s/n, col. Agrícola Bellavista, Metepec, México, C. P. 52140
P. Barragán-Peña
Affiliation:
Tecnológico Nacional de México/ Instituto Tecnológico de Nogales, Ave. Tecnológico 911 Col. Granja, C.P.84065
Guillermina Gómez-Beltrán
Affiliation:
Universidad Tecnológica del Valle de Toluca, Carretera, Del Depto del Distrito Federal km 7.5, 52044 Santa María Atarasquillo, Méx
*
*(Email: [email protected])
*(Email: [email protected])
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Abstract:

The present study investigated the adsorption of fluorides in natural zeolites clinoptilolite-type, sourced in Sonora, Mexico, and modified with Fe. Characterization of the material was carried out along with determination of kinetic parameters varying time and concentration of reagents to calculate maximum adsorption capacity. To determine thermodynamic parameters temperature was varied for accurate characterization of the adsorption process. It was found that the zeolite fixed Fe in its structure without model significant modification, likewise when put in contact with a fluoride solution (F-), it was capable of taking up these ions through adsorption due to the interaction between the sorbato and the pollutant. The kinetics best fit Pseudo-second-order model with Qmax=0.91 mgg-1, therefore it indicates that the process is reversible, spontaneous and endothermic what can favor the reuse of the material.

Keywords

adsorptionFzeolite
Type
Articles
Information
MRS Advances , Volume 4 , Issue 59-60: International Materials Research Congress XXVIII , 2019 , pp. 3215 - 3221
Copyright
Copyright © Materials Research Society 2019 

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References

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