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dc.contributor.author
Borgnino Bianchi, Laura Carolina
dc.contributor.author
Avena, Marcelo Javier
dc.contributor.author
de Pauli, Carlos Primo
dc.date.available
2018-09-11T20:48:49Z
dc.date.issued
2009-06-28
dc.identifier.citation
Borgnino Bianchi, Laura Carolina; Avena, Marcelo Javier; de Pauli, Carlos Primo; Synthesis and characterization of Fe(III)-montmorillonites for phosphate adsorption; Elsevier Science; Colloids and Surfaces A: Physicochemical and Engineering Aspects; 341; 1-3; 28-6-2009; 46-52
dc.identifier.issn
0927-7757
dc.identifier.uri
http://hdl.handle.net/11336/59237
dc.description.abstract
Two Fe(III)-modified montmorillonites were synthesized by mixing Fe(III) nitrate solutions with montmorillonite at pH 3.5 followed by an increase in pH up to 9. The synthesis procedure was analyzed by solubility calculations and Fe(III) speciation in aqueous solutions, and the resulting solids were characterized by X-ray diffraction, specific surface area, Mössbauer spectroscopy, electrophoretic mobilities (EM) and phosphate adsorption. At low pH, iron concentration in solution during the synthesis is controlled by adsorption/intercalation reactions, whereas at high pH the concentration is controlled by the solubility of ferrihydrite. When the initial Fe(III) content is relatively low the synthesized solid contains mainly interlayer/sorbed Fe(III). When the initial Fe(III) content is relatively high the synthesized solid contains also some iron (hydr)oxide phases, mainly ferrihydrite. These Fe(III) phases are in close contact with montmorillonite, either coating the montmorillonite surface or aggregated with montmorillonite particles. The presence of Fe(III) species increases significantly the specific surface area and phosphate adsorption capacity, but changes only slightly the EM of the solid.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Fe (Hydr)Oxide Coating
dc.subject
Fe(Iii)-Montmorillonite
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Ferrihydrite
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Phosphate Adsorption
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Synthesis and characterization of Fe(III)-montmorillonites for phosphate adsorption
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-13T17:24:06Z
dc.journal.volume
341
dc.journal.number
1-3
dc.journal.pagination
46-52
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Borgnino Bianchi, Laura Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
dc.description.fil
Fil: Avena, Marcelo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
dc.description.fil
Fil: de Pauli, Carlos Primo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
dc.journal.title
Colloids and Surfaces A: Physicochemical and Engineering Aspects
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0927775709001654
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.colsurfa.2009.03.037


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