2024/10/17 by Ainane, A., Shybat, Z. L., Mohamed Abdoul-Latif, F. +3
paper · doi:10.48393/imist.prsm/jases-v5i3.52010
This research explored the use of activated carbon derived from chickpea waste infected with anthracnose for the adsorption-based decontamination of methylene blue. The research process was structured around several key steps: the synthesis and characterization of activated carbon, the optimization of adsorption parameters, and the evaluation of adsorption mechanisms. After the production of activated carbon, various analytical techniques were employed, including scanning electron microscopy with EDX spectroscopy, X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR), confirming that the obtained material has a highly porous, carbon-rich architecture. The adsorption efficiency was maximized through a full factorial experimental design approach, taking into account variables such as the initial dye concentration, the mass of the adsorbent, and the pH, leading to the development of a polynomial model based on advanced statistical analyses. Kinetic studies revealed that the pseudo-second-order model provided the best fit (R² = 0.92). Furthermore, the isotherm analysis demonstrated that the Langmuir model (R² = 0.96) was the most suitable, suggesting monomolecular adsorption. The thermodynamic analysis indicated that the process is exothermic and spontaneous at all studied temperatures, highlighting the potential of activated carbon derived from chickpea waste as an effective adsorbent for wastewater treatment.