Autor según el artículo: Boudaoud N; Miloudi H; Bouazza D; Adjdir M; Tayeb A; Fortuny A; Demey H; Sastre AM
Departamento: Enginyeria Química
Autor/es de la URV: Fortuny Sanromà, Agustín
Palabras clave: Zinc Sorption Layered double hydroxides (ldh) Impregnation Cyanex 272 sorption layered double hydroxides (ldh) impregnation cyanex 272
Resumen: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Removal of heavy metals from wastewater is mandatory in order to avoid water pollution of natural reservoirs. In the present study, layered double hydroxide (LDH) materials were evaluated for removal of zinc from aqueous solutions. Materials thus prepared were impregnated with cyanex 272 using the dry method. These materials were characterized through X-ray diffraction (XRD), Fourier transform infrared (FTIR), and thermal analysis. Batch shaking adsorption experiments were performed in order to examine contact time and extraction capacity in the removal process. Results showed that the equilibrium time of Zn (II) extraction is about 4 h for Mg2Al-CO3 and Mg2Al-CO3-cyanex 272, 6 h for Zn2Al-CO3, and 24 h for Zn2Al-CO3-cyanex 272. The experimental equilibrium data were tested for Langmuir, and Freundlich isotherm models. Correlation coefficients indicate that experimental results are in a good agreement with Langmuir's model for zinc ions. Pseudo-first, second-order, Elovich, and intraparticular kinetic models were used to describe kinetic data. It was determined that removal of Zn2+ was well-fitted by a second-order reaction kinetic. A maximum capacity of 280 mg/g was obtained by Zn2Al-CO3-cyanex 272.
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Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 1420-3049
Direcció de correo del autor: agustin.fortuny@urv.cat
Fecha de alta del registro: 2023-02-19
Volumen de revista: 25
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://www.mdpi.com/1420-3049/25/6/1263
Referencia al articulo segun fuente origial: Molecules. 25 (6):
Referencia de l'ítem segons les normes APA: Boudaoud N; Miloudi H; Bouazza D; Adjdir M; Tayeb A; Fortuny A; Demey H; Sastre AM (2020). Removal of zinc from aqueous solutions using lamellar double hydroxide materials impregnated with Cyanex 272: Characterization and sorption studies. Molecules, 25(6), -. DOI: 10.3390/molecules25061263
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
DOI del artículo: 10.3390/molecules25061263
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2020
Tipo de publicación: Journal Publications