Fe-Al-Mn ternary oxide nanosorbent: Synthesis, characterization and phosphate sorption property

In the present work, nanocrystalline Fe-Al-Mn ternary oxide nanosorbent was synthesized via impregnation method. X-ray diffraction (XRD), scanning electron microscope coupled with energy dispersive x-ray spectroscopy (SEM/EDX), Brunauer–Emmett–Teller (BET) technique and Fourier transform infrared sp...

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Autores: Abebe, Buzuayehu, Taddesse, Abi M., Kebede, Tesfahun, Teju, Endale, Díaz Carretero, Isabel
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2017
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/162383
Acesso em linha:http://hdl.handle.net/10261/162383
Access Level:acceso abierto
Palavra-chave:Sorption isotherm
Phosphate
Ternary oxides
Kinetics
Thermodynamics
Desorption
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spelling Fe-Al-Mn ternary oxide nanosorbent: Synthesis, characterization and phosphate sorption propertyAbebe, BuzuayehuTaddesse, Abi M.Kebede, TesfahunTeju, EndaleDíaz Carretero, IsabelSorption isothermPhosphateTernary oxidesKineticsThermodynamicsDesorptionIn the present work, nanocrystalline Fe-Al-Mn ternary oxide nanosorbent was synthesized via impregnation method. X-ray diffraction (XRD), scanning electron microscope coupled with energy dispersive x-ray spectroscopy (SEM/EDX), Brunauer–Emmett–Teller (BET) technique and Fourier transform infrared spectroscopy (FTIR) were employed to characterize the as-synthesized nanomaterials. The XRD result indicates the crystalline nature of the ternary oxide with BET surface area of 49.53 m2 g−1. The optimum operating conditions to carry out sorption study such as pH, adsorbent dose, contact time, speed of agitation and initial phosphate concentration were found to be 3, 0.1 g, 16 h, 100 rpm and 30 ppm, respectively. Both Freundlich and Langmuir isotherm models fit the equilibrium data well with the latter model providing more fit to the experimental data. Kinetic data correlated well with the pseudo-second-order and Elovich models suggesting chemisorptions as the prevailing mechanism of phosphate sorption onto the nanosorbent. Thermodynamic studies resulted negative ΔG values indicating the spontaneity of the sorption process. The Fe-Al-Mn ternary nanocomposite sorbent showed a sorption capacity of 38.46 mg g−1 at pH 3. The sorption efficiency of the nanosorbent was found to be 99.5%. This adsorbent, with large sorption capacity and efficiency, is therefore a promising adsorbent for the removal of phosphate ions from aqueous systems.ID is grateful to CSIC for her research leave at AAU and HU. The financial support from the Spanish Research Council CSIC I-COOP+-2014 (COOPB20082) is acknowledged for funding. This work has also been funded from Projects MAT2015-65767-P (MINECO) and MAT2016-77496-R (AEI/FEDER, UE). The Research and Extension Office of Haramaya University (HURG-2014-03-03), School of Graduate Studies and Chemistry Department of HU are also acknowledged.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas (España)Ministerio de Economía y Competitividad (España)European CommissionHaramaya UniversityConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201820182017info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/162383reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2015-65767-Pinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2016-77496-Rhttp://dx.doi.org/10.1016/j.jece.2017.02.026Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1623832026-05-22T06:33:51Z
dc.title.none.fl_str_mv Fe-Al-Mn ternary oxide nanosorbent: Synthesis, characterization and phosphate sorption property
title Fe-Al-Mn ternary oxide nanosorbent: Synthesis, characterization and phosphate sorption property
spellingShingle Fe-Al-Mn ternary oxide nanosorbent: Synthesis, characterization and phosphate sorption property
Abebe, Buzuayehu
Sorption isotherm
Phosphate
Ternary oxides
Kinetics
Thermodynamics
Desorption
title_short Fe-Al-Mn ternary oxide nanosorbent: Synthesis, characterization and phosphate sorption property
title_full Fe-Al-Mn ternary oxide nanosorbent: Synthesis, characterization and phosphate sorption property
title_fullStr Fe-Al-Mn ternary oxide nanosorbent: Synthesis, characterization and phosphate sorption property
title_full_unstemmed Fe-Al-Mn ternary oxide nanosorbent: Synthesis, characterization and phosphate sorption property
title_sort Fe-Al-Mn ternary oxide nanosorbent: Synthesis, characterization and phosphate sorption property
dc.creator.none.fl_str_mv Abebe, Buzuayehu
Taddesse, Abi M.
Kebede, Tesfahun
Teju, Endale
Díaz Carretero, Isabel
author Abebe, Buzuayehu
author_facet Abebe, Buzuayehu
Taddesse, Abi M.
Kebede, Tesfahun
Teju, Endale
Díaz Carretero, Isabel
author_role author
author2 Taddesse, Abi M.
Kebede, Tesfahun
Teju, Endale
Díaz Carretero, Isabel
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas (España)
Ministerio de Economía y Competitividad (España)
European Commission
Haramaya University
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Sorption isotherm
Phosphate
Ternary oxides
Kinetics
Thermodynamics
Desorption
topic Sorption isotherm
Phosphate
Ternary oxides
Kinetics
Thermodynamics
Desorption
description In the present work, nanocrystalline Fe-Al-Mn ternary oxide nanosorbent was synthesized via impregnation method. X-ray diffraction (XRD), scanning electron microscope coupled with energy dispersive x-ray spectroscopy (SEM/EDX), Brunauer–Emmett–Teller (BET) technique and Fourier transform infrared spectroscopy (FTIR) were employed to characterize the as-synthesized nanomaterials. The XRD result indicates the crystalline nature of the ternary oxide with BET surface area of 49.53 m2 g−1. The optimum operating conditions to carry out sorption study such as pH, adsorbent dose, contact time, speed of agitation and initial phosphate concentration were found to be 3, 0.1 g, 16 h, 100 rpm and 30 ppm, respectively. Both Freundlich and Langmuir isotherm models fit the equilibrium data well with the latter model providing more fit to the experimental data. Kinetic data correlated well with the pseudo-second-order and Elovich models suggesting chemisorptions as the prevailing mechanism of phosphate sorption onto the nanosorbent. Thermodynamic studies resulted negative ΔG values indicating the spontaneity of the sorption process. The Fe-Al-Mn ternary nanocomposite sorbent showed a sorption capacity of 38.46 mg g−1 at pH 3. The sorption efficiency of the nanosorbent was found to be 99.5%. This adsorbent, with large sorption capacity and efficiency, is therefore a promising adsorbent for the removal of phosphate ions from aqueous systems.
publishDate 2017
dc.date.none.fl_str_mv 2017
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/162383
url http://hdl.handle.net/10261/162383
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2015-65767-P
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2016-77496-R
http://dx.doi.org/10.1016/j.jece.2017.02.026
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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