Estudio de la adsorción de arsénico en agua mediante el uso del nanocompósito basado en nanopartículas de magnetita y goma de tara
Resumen
Uno de los contaminantes que se puede encontrar en los cuerpos de agua producto de la actividad industrial es el arsénico. Los métodos para la remoción de este no metal resultan ser poco eficientes y costosos; ante ello, se desarrolló un nuevo nanocompósito basado en goma de tara y nanopartículas de magnetita para la remoción de arsénico en agua. La caracterización de los nanocompósitos preparados con diferente relación (Fe3O4: goma de tara) mostró la presencia de la fase magnetita, según los análisis por difracción de rayos X. El tamaño de partícula era de 13,74 nm, lo cual se determinó mediante microscopía electrónica de transmisión. Las pruebas de remoción de arsénico en agua realizadas con los nanocompósitos con diferente contenido de magnetita, variación de pH y peso de este mostraron que este material con 80 % en peso de magnetita presentaba mayor eficiencia. Los valores máximos estudiados sobre la concentración de arsénico fueron de 2 ppm, lo cual llegó a remover el 24,8 % en quince minutos de exposición con el nanocompósito con 80 % de nanopartículas de magnetita.
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