Carbón activado a partir de residuos de cáñamo modificado químicamente para remover azul de metileno
Resumen
El azul de metileno es un colorante que provoca efectos nocivos sobre la salud humana, por lo que el tratamiento en los efluentes contaminados por este colorante debe ser atendido. En la presente investigación se evaluó la capacidad de adsorción del carbón activado (CC) y carbón activado modificado con H3PO4 (CAC) a partir de los residuos del cáñamo para la remoción de azul de metileno en soluciones acuosas. Para la preparación de los carbones activados se empleó un horno tubular tipo mufla horizontal, cuyas condiciones de operación fueron 450 ºC, 1 hora, flujo de N2 de 50 mL.min-1 y velocidad de calentamiento de 5 a 10 ºC/min, las lecturas de azul de metileno se lo realizó a = 664 nm. Los resultados arrojaron que el pH óptimo para la adsorción fue de 7 y 3 para los materiales CAC y CC, respectivamente; así mismo, se obtuvo una Qmax de 486,828 mg.g-1 y 142,384 mg.g-1 para CAC y CC, respectivamente. Se concluyó que el mejor material fue el CAC, en la que al usar el carbón activado modificado con el H3PO4, probablemente se dio debido al incremento del volumen de los poros y gran área superficial.
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Derechos de autor 2023 Tanya Carchi Tandazo ;María Elena Yánez Romero;Carolina Beltrán Balarezo;Ehilerth Elizalde Reyes;Alberto Vega Loaiza
Esta obra está bajo licencia internacional Creative Commons Reconocimiento 4.0.
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