Obtención de zeolita sintética tipo NaP1 en medio alcalino a partir de zeolita natural en condiciones de laboratorio
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Rev. Bol. Quim
Abstract
Esta investigación condujo al establecimiento de una metodología para la caracterización morfológica de la zeolita natural. El material fue recolectado en el área de Lampa, Perú. Las muestras se analizaron por microscopía electrónica de barrido (SEM). La zeolita sintética tipo NaP1 se obtuvo por activación en un medio alcalino de NaOH a partir de zeolita natural. La morfología del mineral se determinó antes y después del proceso de activación. Además, la capacidad de intercambio catiónico del material de zeolita por el método 9081 (capacidad de intercambio catiónico de residuos) se determinó mediante espectroscopia de absorción atómica. Se logró la caracterización del material estudiado en términos de morfología antes y después del proceso de activación, y la determinación del intercambio catiónico del material resultante. Se concluye que la zeolita natural era heulandita, a partir de la cual se obtuvo zeolita sintética tipo NaP1. Por otro lado, se manifestó una alta capacidad de intercambio catiónico definiendo así una alternativa importante para la región en la remediación y mitigación de la contaminación por metales pesados en efluentes industriales a través de procesos de intercambio iónico.
This research conducted to the establishment of a methodology for the morphological characterization of natural zeolite. The material was collected at the area of Lampa, Peru. The samples were analyzed by electron microscopy scanning (SEM). Synthetic zeolite type NaP1 was obtained by activation in a NaOH alkaline medium out of natural zeolite. Morphology of the ore was determined before and after the activation process. Also, the ability of cationic exchange of the zeolite material by the method 9081 (capacity of cationic exchange of waste) was determined by atomic absorption spectroscopy. The characterization of the material studied in terms of morphology before and after the activation process, and determination of the cationic exchange of the resulting material were achieved. It is concluded that natural zeolite was heulandite, from which synthetic zeolite type NaP1 was obtained. On the other hand, high capacity of cationic exchange was manifested defining thus an important alternative for the region in remediation and mitigation of pollution by heavy metals in industrial effluents through ion exchange processes.
This research conducted to the establishment of a methodology for the morphological characterization of natural zeolite. The material was collected at the area of Lampa, Peru. The samples were analyzed by electron microscopy scanning (SEM). Synthetic zeolite type NaP1 was obtained by activation in a NaOH alkaline medium out of natural zeolite. Morphology of the ore was determined before and after the activation process. Also, the ability of cationic exchange of the zeolite material by the method 9081 (capacity of cationic exchange of waste) was determined by atomic absorption spectroscopy. The characterization of the material studied in terms of morphology before and after the activation process, and determination of the cationic exchange of the resulting material were achieved. It is concluded that natural zeolite was heulandite, from which synthetic zeolite type NaP1 was obtained. On the other hand, high capacity of cationic exchange was manifested defining thus an important alternative for the region in remediation and mitigation of pollution by heavy metals in industrial effluents through ion exchange processes.
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Vol. 35, No. 2