dc.creatorGamba, Martina
dc.creatorLázaro Martínez, Juan M.
dc.creatorOlivelli, Melisa L.
dc.creatorYarza, Florencia
dc.creatorVega, Daniel
dc.creatorCurutchet, Gustavo
dc.creatorTorres Sánchez, Rosa María
dc.date2018
dc.date2021-03-11T18:10:46Z
dc.date.accessioned2023-07-15T00:46:59Z
dc.date.available2023-07-15T00:46:59Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/114766
dc.identifierissn:1614-7499
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7455791
dc.descriptionThe simultaneous adsorption of both imazalil (IMZ) and thiabendazole (TBZ) fungicides in a Cu2+-exchanged Mt was studied in this work. Kinetic studies were used to determine the rate law which describes the adsorption of individual fungicides onto the adsorbent. Adsorption isotherm of individual and combined fungicides was done to evaluate synergic or antagonistic effects. The Mt-Cu material considerably improved TBZ and/or IMZ adsorption from aqueous suspensions with respect to raw Mt, leading to removal efficiencies higher than 99% after 10 min of contact time for TBZ and IMZ Ci = 15 and 40 mg/L, respectively, when a solid dosage = 1 g/L was used. The adsorption sites involved were determined by a combination of X-ray diffraction (XRD) determinations and electron paramagnetic resonance (EPR), indicating that fungicides were bonded to Cu2+ cations, while the rate limiting step was the formation of coordination bonds. The adsorption mechanism proposed is that of ligand exchange between water and fungicide molecules in the metal coordination sphere. The single-crystal structure for the IMZ-Cu2+ complex indicated that four molecules were bounded to the copper centers, while two molecules of TBZ are bounded to copper explaining the higher IMZ uptake capacity for the Mt-Cu material.
dc.descriptionCentro de Tecnología de Recursos Minerales y Cerámica
dc.descriptionConsejo Nacional de Investigaciones Científicas y Técnicas
dc.formatapplication/pdf
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by/4.0/
dc.rightsCreative Commons Attribution 4.0 International (CC BY 4.0)
dc.subjectQuímica
dc.subjectCu2+-exchanged montmorillonite
dc.subjectThiabendazole
dc.subjectImazalil
dc.subjectAdsorption
dc.subjectCrystal structure determination
dc.subjectCopper-imazalil complex
dc.titleKinetic and equilibrium adsorption of two post-harvest fungicides onto copper-exchanged montmorillonite: synergic and antagonistic effects of both fungicides’ presence
dc.typeArticulo
dc.typeArticulo


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