Abstract
The presence of cationic dyes; especially the basic ones in an aqueous solution causes several problems. Therefore, it is necessary to reduce itfrom industrial effluents before being discharged into the environment. This study aimed to investigate the removal of Basic Blue 41 (BB41) dye from an aqueous solution using agricultural waste as an adsorbent. This study was conducted in a batch experimental system. The effect of various parameters such as initial dye concentration, pH, pH<sub>zpc</sub> and adsorbent dosage was studied. The data were examined by Freundlich, Temkin, Debinin-Radushkevich, pseudo first order and pseudo second order kinetic, and thermodynamic parameters. The characterization of the adsorbent was determined by the Scanning Electron Microscopy (SEM), Fourier transform infrared (FTIR) and X-Ray Diffraction (DRX). The results of this work showed that the <i>Scolymus Maculatus</i> adsorbent was proven most effective in removing Basic Blue 41 from an aqueous solution at pH=7,09 with 85,14%. The results showed also that the adsorption process follows the Freundlich isotherm as well as pseudo-second-order kinetic. The results of the thermodynamic process showed that the adsorption is spontaneous and endothermic in nature.
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