Polímeros de Impresión Molecular: una alternativa innovadora para la remoción selectiva de As3+ en tratamiento de agua subterránea
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https://doi.org/10.66482/12aska39Palabras clave:
arsénico trivalente, polímero de impresión molecular, remoción de metales pesados, espectroscopia UV-vis.Resumen
Los polímeros de impresión molecular (Molecularly Imprinted Polymers MIPs, por sus siglas en inglés) sintéticos han sido ampliamente estudiados para la remoción de contaminantes orgánicos presentes en aguas residuales. Sin embargo, su aplicación en la eliminación de metales pesados presentes en aguas subterráneas o en efluentes industriales ha sido limitada. En este trabajo se presenta la síntesis de un polímero MIP diseñado para la remoción selectiva de iones de arsénico trivalente As3+ en solución acuosa sintética. La plantilla de impresión molecular se preparó mediante la interacción del monómero vinilpiridina, EGDMA (dimetacrilato de etilenglicol) y arsenito de sodio en una mezcla acuosa-acetonitrilo. Las propiedades de adsorción se evaluaron a pH 2, 4 y 7. El polímero MIP mostró una mayor capacidad de remoción en comparación con el polímero sin impresión molecular. Finalmente, estos resultados indican que el uso del polímero MIP es una alternativa viable para el tratamiento de agua contaminada con arsénico trivalente.
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