UTILIZACIÓN DEL ÓXIDO DE GRAFENO COMO DESCONTAMINANTE.
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2020-10-13
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Jaén: Universidad de Jaén
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En el presente trabajo se ha investigado la posibilidad de adsorción de una fibra de poliamida, PA 6.6, previamente tratada con óxido de Grafeno, GO, frente a distintos colorantes en disolución acuosa. En una primera parte se selecciona el tinte que proporciona mayor rendimiento de adsorción sobre el sistema PA 6.6_GO, así como las condiciones óptimas de pH y temperatura de este proceso. Así se observa que el tinte reactivo Azul Brillante de Remazol R, RBBR, representa un 100% a pH 6.5, temperatura ambiente 293K, y cualquier rango de concentración ensayado desde 20 hasta 100 mg/L. Por otro lado, se ha estudiado previamente los mecanismos de adsorción del tinte citado, RBBR, sobre la fibra de poliamida, PA 6.6. Basándonos en la adsorción completa del tinte por parte del sistema PA 6.6_GO, en el presente trabajo se propone esta técnica como posible mecanismo de eliminación del tinte RBBR de aguas residuales.
In the present work, the possibility of adsorption of a polyamide fibre, PA 6.6, previously treated with graphite oxide, GO, against different dyes in aqueous solution has been investigated. In a first part, the dye that provides the highest adsorption performance over the PA 6.6_GO system is selected, as well as the optimal pH and temperature conditions of this process. Thus it can be seen that the Bright Blue Remazol R, RBBR, reactive dye represents 100% at pH 6.5, ambient temperature 293K, and any concentration range tested from 20 to 100 mg/L. On the other hand, the mechanisms of adsorption of the mentioned dye, RBBR, on the polyamide fiber, PA 6.6, have been previously studied. Based on the complete adsorption of the dye by the PA 6.6_GO system, in the present work this technique is proposed as a possible mechanism for the elimination of the dye RBBR from the wastewater.
In the present work, the possibility of adsorption of a polyamide fibre, PA 6.6, previously treated with graphite oxide, GO, against different dyes in aqueous solution has been investigated. In a first part, the dye that provides the highest adsorption performance over the PA 6.6_GO system is selected, as well as the optimal pH and temperature conditions of this process. Thus it can be seen that the Bright Blue Remazol R, RBBR, reactive dye represents 100% at pH 6.5, ambient temperature 293K, and any concentration range tested from 20 to 100 mg/L. On the other hand, the mechanisms of adsorption of the mentioned dye, RBBR, on the polyamide fiber, PA 6.6, have been previously studied. Based on the complete adsorption of the dye by the PA 6.6_GO system, in the present work this technique is proposed as a possible mechanism for the elimination of the dye RBBR from the wastewater.