Adsorción del tinte verde de malaquita básico a través de carbón activado del semilla de açaí
DOI:
https://doi.org/10.33448/rsd-v10i2.12871Palabras clave:
Isotermas; Cinética; Tintes.Resumen
Los tintes sintéticos se utilizan ampliamente en diversos sectores industriales, generando un potencial contaminante para los cuerpos de agua. Así, ante la gran necesidad de realizar un tratamiento adecuado de este tipo de efluentes, este estudio observó la eficiencia en la remoción del tinte Malaquita Verde utilizando el carbón activado (CA) producido a partir de la piedra de açaí (Euterpe oleracea), como adsorbente. comúnmente generada en la región amazónica. En la producción de CA se utilizaron dos agentes activantes, el Ácido Fosfórico (H3PO4), que se denomina CAG-A y el Hidróxido de Sodio (NaOH), que se denomina CAG-B. La caracterización de CA se realizó mediante análisis FTIR, ATG/ATD, área BET y MEV/EDS. Para determinar la capacidad de adsorción, así como para estudiar y comprender los mecanismos y pasos de control del proceso de adsorción, los datos experimentales se ajustaron a los modelos matemáticos de Langmuir y Freundlich y a los modelos cinéticos de Pseudo-Primer Orden, Pseudo-Segundo Orden. y difusión intrapartícula. El análisis para la caracterización de las CAs indicó la presencia de grupos funcionales ácidos, cargando negativamente la superficie de CAG-A y CAG-B, favoreciendo el proceso de adsorción, ya que el adsorbato en este estudio es un colorante catiónico. Los datos experimentales para CAG-A y CAG-B se ajustan mejor a la isoterma de Freundlich, así como el modelo cinético de Pseudo-Segundo Orden tuvo un mejor ajuste en ambos carbones. La adsorción de Verde Malaquita en CAG-A y CAG-B resultó ser eficiente para CAs, obteniendo valores de qmax = 113.9 mg/g y 668.88 mg/g respectivamente.
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