Removal of phenol from aqueous solutions by adsorption onto Mn-Ce-K solids

Autores
D'Alessandro, Oriana; Thomas, Horacio Jorge; Sambeth, Jorge Enrique
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Mn-Ce solids were used for the adsorption of phenol from aqueous solution at 25 and 50 C. The samples were prepared with a Mn-Ce molar ratio Between 0 and 100 % by the alkaline co-precipitation method (KOH). Structural studies showed the formation of cryptomelane, Mn2O3, Mn5O8, Mn3O4 and CeO2. The formation of different phases is a function of the Ce concentration. The adsorption isotherms of phenol were determined and modelled with Langmuir and Freundlich equations. Sample 7/3 had a high adsorption capacity. Thermodynamic parameters, in flat and vertical position of phenol, were calculated. These parameters indicated that the adsorption of phenol onto Mn-Ce was spontaneous and exothermic. The DRIFTS study detected of both phenol and phenolate species adsorbed on the surface and the aromatic ring of phenol is parallel to the surface. The interaction between Mn and Ce enhanced the reducibility of the oxides and activated oxygen, which is favorable for the adsorption process.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Materia
Química
Phenol adsorption
Alkaline precipitation
Mn–Ce–K
Thermodynamic parameters
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/122503
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/122503
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Removal of phenol from aqueous solutions by adsorption onto Mn-Ce-K solidsD'Alessandro, OrianaThomas, Horacio JorgeSambeth, Jorge EnriqueQuímicaPhenol adsorptionAlkaline precipitationMn–Ce–KThermodynamic parametersMn-Ce solids were used for the adsorption of phenol from aqueous solution at 25 and 50 C. The samples were prepared with a Mn-Ce molar ratio Between 0 and 100 % by the alkaline co-precipitation method (KOH). Structural studies showed the formation of cryptomelane, Mn2O3, Mn5O8, Mn3O4 and CeO2. The formation of different phases is a function of the Ce concentration. The adsorption isotherms of phenol were determined and modelled with Langmuir and Freundlich equations. Sample 7/3 had a high adsorption capacity. Thermodynamic parameters, in flat and vertical position of phenol, were calculated. These parameters indicated that the adsorption of phenol onto Mn-Ce was spontaneous and exothermic. The DRIFTS study detected of both phenol and phenolate species adsorbed on the surface and the aromatic ring of phenol is parallel to the surface. The interaction between Mn and Ce enhanced the reducibility of the oxides and activated oxygen, which is favorable for the adsorption process.Centro de Investigación y Desarrollo en Ciencias Aplicadas2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/122503enginfo:eu-repo/semantics/altIdentifier/issn/1878-5190info:eu-repo/semantics/altIdentifier/issn/1878-5204info:eu-repo/semantics/altIdentifier/doi/10.1007/s11144-014-0747-6info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T11:01:03Zoai:sedici.unlp.edu.ar:10915/122503Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 11:01:04.019SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Removal of phenol from aqueous solutions by adsorption onto Mn-Ce-K solids
title Removal of phenol from aqueous solutions by adsorption onto Mn-Ce-K solids
spellingShingle Removal of phenol from aqueous solutions by adsorption onto Mn-Ce-K solids
D'Alessandro, Oriana
Química
Phenol adsorption
Alkaline precipitation
Mn–Ce–K
Thermodynamic parameters
title_short Removal of phenol from aqueous solutions by adsorption onto Mn-Ce-K solids
title_full Removal of phenol from aqueous solutions by adsorption onto Mn-Ce-K solids
title_fullStr Removal of phenol from aqueous solutions by adsorption onto Mn-Ce-K solids
title_full_unstemmed Removal of phenol from aqueous solutions by adsorption onto Mn-Ce-K solids
title_sort Removal of phenol from aqueous solutions by adsorption onto Mn-Ce-K solids
dc.creator.none.fl_str_mv D'Alessandro, Oriana
Thomas, Horacio Jorge
Sambeth, Jorge Enrique
author D'Alessandro, Oriana
author_facet D'Alessandro, Oriana
Thomas, Horacio Jorge
Sambeth, Jorge Enrique
author_role author
author2 Thomas, Horacio Jorge
Sambeth, Jorge Enrique
author2_role author
author
dc.subject.none.fl_str_mv Química
Phenol adsorption
Alkaline precipitation
Mn–Ce–K
Thermodynamic parameters
topic Química
Phenol adsorption
Alkaline precipitation
Mn–Ce–K
Thermodynamic parameters
dc.description.none.fl_txt_mv Mn-Ce solids were used for the adsorption of phenol from aqueous solution at 25 and 50 C. The samples were prepared with a Mn-Ce molar ratio Between 0 and 100 % by the alkaline co-precipitation method (KOH). Structural studies showed the formation of cryptomelane, Mn2O3, Mn5O8, Mn3O4 and CeO2. The formation of different phases is a function of the Ce concentration. The adsorption isotherms of phenol were determined and modelled with Langmuir and Freundlich equations. Sample 7/3 had a high adsorption capacity. Thermodynamic parameters, in flat and vertical position of phenol, were calculated. These parameters indicated that the adsorption of phenol onto Mn-Ce was spontaneous and exothermic. The DRIFTS study detected of both phenol and phenolate species adsorbed on the surface and the aromatic ring of phenol is parallel to the surface. The interaction between Mn and Ce enhanced the reducibility of the oxides and activated oxygen, which is favorable for the adsorption process.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
description Mn-Ce solids were used for the adsorption of phenol from aqueous solution at 25 and 50 C. The samples were prepared with a Mn-Ce molar ratio Between 0 and 100 % by the alkaline co-precipitation method (KOH). Structural studies showed the formation of cryptomelane, Mn2O3, Mn5O8, Mn3O4 and CeO2. The formation of different phases is a function of the Ce concentration. The adsorption isotherms of phenol were determined and modelled with Langmuir and Freundlich equations. Sample 7/3 had a high adsorption capacity. Thermodynamic parameters, in flat and vertical position of phenol, were calculated. These parameters indicated that the adsorption of phenol onto Mn-Ce was spontaneous and exothermic. The DRIFTS study detected of both phenol and phenolate species adsorbed on the surface and the aromatic ring of phenol is parallel to the surface. The interaction between Mn and Ce enhanced the reducibility of the oxides and activated oxygen, which is favorable for the adsorption process.
publishDate 2014
dc.date.none.fl_str_mv 2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/122503
url http://sedici.unlp.edu.ar/handle/10915/122503
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1878-5190
info:eu-repo/semantics/altIdentifier/issn/1878-5204
info:eu-repo/semantics/altIdentifier/doi/10.1007/s11144-014-0747-6
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.13397

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