CEQUINOR

URI permanente para esta comunidad

https://digital.cic.gba.gob.ar/handle/11746/7044
Nombre: Centro de Química Inorgánica "Prof. Dr. Pedro J. Aymonino" (CEQUINOR)
Sitio web: https://cequinor.conicet.gov.ar
Dependencia: CONICET - UNLP - CIC
Descripción: Los objetivos del Centro son el estudio experimental y teórico, con desarrollo y aplicación de modelos, de las propiedades estructurales y espectroscópicas de sistemas inorgánicos (incluyendo ferroeléctricos, magnetoresistivos, superconductores de alta Tc) y bioinorgánicos. Los estudios teóricos abarcan átomos, moléculas y sistemas sencillos y, además, apoyan a los experimentales, los que se ocupan esencialmente de oxoaniones y óxidos mixtos, complejos de coordinación, compuestos covalentes halogenados y sistemas inorgánicos de interés biológico, geológico y tecnológico (catálisis heterogénea).

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Examinando CEQUINOR por Autor "Botto, Irma Lía"

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  • Artículo
    Acceso Abierto
    Spectroscopic and Microscopic Characterization of Volcanic Ash from Puyehue-(Chile) Eruption: Preliminary Approach for the Application in the Arsenic Removal
    (Hindawi Publishing Corporation, 2013) Botto, Irma Lía; Canafoglia, María Elena; Gazzoli, Delia; González, María José
    Volcanic ash fromPuyehueCordonCaulleVolcanicComplex (Chile), emitted on June 4, 2011, and deposited inVilla LaAngostura at ∼40 kmof the source, was collected and analyzed by Raman spectroscopy, optical and scanning electron microscopy (SEM-EDS), Xray diffraction (XRD), surface area (BET), and chemical analysis (ICP-AES-MS technique).Themineralogical and physicochemical study revealed that the pyroclastic mixture contains iron oxides in the form of magnetite and hematite as well as pyroxene and plagioclase mineral species and amorphous pumiceous shards. Carbonaceous material was also identified. Physicochemical techniques allow us to select two representative samples (average composition and Fe-rich materials) which were used to analyze their performances in the adsorption process to remove arsenic from water. Additional iron activation by means of ferric salts was performed under original sample. Results showed that the low-cost feedstock exhibited a good adsorption capacity to remove the contaminant, depending on the iron content and the water pH.