Abstract
This paper deals with the adsorption study of a synthetic dye namely Brilliant Green (BG) used frequently in the textile industries, using a natural and a low-cost adsorbent, which is locally available. The adsorbent used in this work is the Beech sawdust, collected from an industrial unit of wood in Fez city (Morocco) and which is characterized before by various techniques. The study of the adsorption potential of this dye on Beech sawdust and the monitoring of the influence of several parameters on this adsorption were evaluated. The analysis of the results obtained during this study showed that the adsorption rate of Brilliant Green dye reached a percentage of about 82% with a maximum concentration of 80 ppm. The optimum mass of Beech sawdust used is 1.25 g in a volume of 100 ml. The mixture was agitated for90 min as a contact time at ambient temperature. The adsorption isotherms modeling obtained is consistent with the Langmuir model and the kinetic data follows the pseudo-second order model. This study revealed that the Beech sawdust is very effective in removing Brilliant Green as a cationic dye, which making these sawdust an effective alternative for the removal of cationic dyes from polluted water.
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