Comparative Study of Three Dyes’ Adsorption onto Activated Carbon from Chenopodium quinoa Willd and Quillaja saponaria

Author:

Abril DianaORCID,Ferrer VictorORCID,Mirabal-Gallardo Yaneris,Cabrera-Barjas GustavoORCID,Segura Cristina,Marican AdolfoORCID,Pereira Alfredo,Durán-Lara Esteban F.ORCID,Valdés OscarORCID

Abstract

The present study shows porous activated carbon obtained from Chenopodium quinoa Willd and Quillaja saponaria and their use as potential adsorbents to remove three types of dyes from aqueous solutions. The adsorption results were compared with commercial charcoal to check their efficiency. All porous carbon materials were activated using carbon dioxide and steam and fully characterized. Moreover, the steam-activated samples exhibited a high total pore volume with a BET surface area of around 800 m2 g−1. Batch adsorption experiments showed that commercial charcoal is the charcoal that offered the best adsorption efficiency for tartrazine and sunset yellow FCF. However, in the case of crystal violet, all activated carbons obtained from Chenopodium quinoa Willd and Quillaja saponaria showed the best captures, outperforming commercial charcoal. Molecular dockings of the dyes on the commercial charcoal surface were performed using AutoDock Vina. The kinetic results of the three isotherm’s models for the present data follow the order: Langmuir~Freundlich > Temkin.

Funder

Agencia Nacional de Investigación y Desarrollo

Fondo de Innovación para la Competitividad Regional

ANID BASAL

Publisher

MDPI AG

Subject

General Materials Science

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