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dc.contributor.author
Rojas Delgado, Ricardo
dc.contributor.author
Perez, M. Rosario
dc.contributor.author
Erro, Eustaquio Martín
dc.contributor.author
Ortiz, Patricia Ines
dc.contributor.author
Ulibarri, Maria Angeles
dc.contributor.author
Giacomelli, Carla Eugenia
dc.date.available
2019-04-10T14:52:10Z
dc.date.issued
2009-03
dc.identifier.citation
Rojas Delgado, Ricardo; Perez, M. Rosario; Erro, Eustaquio Martín; Ortiz, Patricia Ines; Ulibarri, Maria Angeles; et al.; EDTA modified LDHs as Cu2+ scavengers: Removal kinetics and sorbent stability; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 331; 2; 3-2009; 425-431
dc.identifier.issn
0021-9797
dc.identifier.uri
http://hdl.handle.net/11336/73940
dc.description.abstract
EDTA modified layered double hydroxides (LDHs) were investigated as potential sorbents to remediate heavy metals pollution. The polidentate ligand was introduced by an exchange method in a Zn-Al-LDH, which takes place with partial erosion of the layers, causing the intercalation of [Zn(EDTA)]2- complex instead of the ligand. [Cu(H2O)6]2+ cation was selected as a model cation to study the uptake mechanism, exploring the elimination kinetics from the first minutes up to the steady state. A flow injection analysis system coupled to an amperometric detector (FIA-AM) was applied to perform fast and reliable [Cu(H2O)6]2+ determinations in monodisperse solid-aqueous solution systems. Furthermore, the sorbent stability was determined as a function of the pH and the nitrate concentration. The [Cu(H2O)6]2+ elimination is produced by an exchange reaction with [Zn(EDTA)]2- anions placed either in the solid interlayer or in the aqueous solution, this last being released from the sorbent. Additional [Cu(H2O)6]2+ removal is produced by Cu(OH)2 precipitation at high copper concentrations due to the LDHs high pH buffering capacity. The sorbent removes [Cu(H2O)6]2+ with high affinity in a wide concentration range. The elimination process reaches equilibrium in less than 30 min and leaves metal cation concentrations lower than 0.05 ppm in the supernatants.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Inc Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Heavy Metals Remediation
dc.subject
Kinetics
dc.subject
Layered Double Hydroxides
dc.subject
Uptake
dc.subject.classification
Otras Ciencias Químicas
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
EDTA modified LDHs as Cu2+ scavengers: Removal kinetics and sorbent stability
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-18T15:05:43Z
dc.journal.volume
331
dc.journal.number
2
dc.journal.pagination
425-431
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Rojas Delgado, Ricardo. 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: Perez, M. Rosario. Universidad de Córdoba; España
dc.description.fil
Fil: Erro, Eustaquio Martín. 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: Ortiz, Patricia Ines. 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: Ulibarri, Maria Angeles. Universidad de Córdoba; España
dc.description.fil
Fil: Giacomelli, Carla Eugenia. 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
Journal of Colloid and Interface Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jcis.2008.11.045
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0021979708015737


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