Articles producció científica> Enginyeria Química

Removal of zinc from aqueous solutions using lamellar double hydroxide materials impregnated with Cyanex 272: Characterization and sorption studies

  • Dades identificatives

    Identificador: imarina:6389820
    Autors:
    Boudaoud NMiloudi HBouazza DAdjdir MTayeb AFortuny ADemey HSastre AM
    Resum:
    © 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.
  • Altres:

    Autor segons l'article: Boudaoud N; Miloudi H; Bouazza D; Adjdir M; Tayeb A; Fortuny A; Demey H; Sastre AM
    Departament: Enginyeria Química
    Autor/s de la URV: Fortuny Sanromà, Agustín
    Paraules clau: Zinc Sorption Layered double hydroxides (ldh) Impregnation Cyanex 272 sorption layered double hydroxides (ldh) impregnation cyanex 272
    Resum: © 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.
    Àrees temàtiques: Zootecnia / recursos pesqueiros Saúde coletiva Química Psicología Planejamento urbano e regional / demografia Physical and theoretical chemistry Pharmaceutical science Organic chemistry Odontología Nutrição Molecular medicine Medicine (miscellaneous) Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Interdisciplinar Geografía General medicine Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Educação física Economia Drug discovery Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, organic Chemistry, multidisciplinary Chemistry (miscellaneous) Biotecnología Biodiversidade Biochemistry & molecular biology Astronomia / física Analytical chemistry
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 1420-3049
    Adreça de correu electrònic de l'autor: agustin.fortuny@urv.cat
    Data d'alta del registre: 2023-02-19
    Volum de revista: 25
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://www.mdpi.com/1420-3049/25/6/1263
    Referència a l'article segons font original: Molecules. 25 (6):
    Referència 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 Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI de l'article: 10.3390/molecules25061263
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2020
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Analytical Chemistry,Biochemistry & Molecular Biology,Chemistry (Miscellaneous),Chemistry, Multidisciplinary,Chemistry, Organic,Drug Discovery,Medicine (Miscellaneous),Molecular Medicine,Organic Chemistry,Pharmaceutical Science,Physical and Theoretical Chemistry
    Zinc
    Sorption
    Layered double hydroxides (ldh)
    Impregnation
    Cyanex 272
    sorption
    layered double hydroxides (ldh)
    impregnation
    cyanex 272
    Zootecnia / recursos pesqueiros
    Saúde coletiva
    Química
    Psicología
    Planejamento urbano e regional / demografia
    Physical and theoretical chemistry
    Pharmaceutical science
    Organic chemistry
    Odontología
    Nutrição
    Molecular medicine
    Medicine (miscellaneous)
    Medicina veterinaria
    Medicina iii
    Medicina ii
    Medicina i
    Materiais
    Matemática / probabilidade e estatística
    Interdisciplinar
    Geografía
    General medicine
    Farmacia
    Ensino
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Educação física
    Economia
    Drug discovery
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Chemistry, organic
    Chemistry, multidisciplinary
    Chemistry (miscellaneous)
    Biotecnología
    Biodiversidade
    Biochemistry & molecular biology
    Astronomia / física
    Analytical chemistry
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