Absorptive removal of methylene blue from aqueous using Moringa Oleifera extract loaded activated carbon | ||||
| Egyptian Journal of Chemistry | ||||
| Articles in Press, Accepted Manuscript, Available Online from 04 August 2025 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2025.384362.11756 | ||||
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| Authors | ||||
Hany Hemida  1; Mohamed M Ebrahium1; Jafar A Alkabli2; Thamer S. Alraddadi 3
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| 1Applied College at Khulais, University of Jeddah, Jeddah, Saudi Arabia | ||||
| 2Chemistry Department, College of Science, University of Jeddah, Jeddah, Saudi Arabia | ||||
| 3Department of Chemistry, Faculty of Science, Islamic University of Madinah, Al-Madinah Al-Munawwarah 42351, Saudi Arabia | ||||
| Abstract | ||||
| This study investigates the removal of methylene blue (MB) dye from aqueous solutions using activated carbon (AC) and Moringa oleifera leaf extracts loaded onto AC using hexane (MS-AC) and water (MW-AC). Key operational parameters such as dye concentration, contact time, pH, and adsorbent dosage were optimized. The MS-AC sample achieved 100% MB removal, showing superior performance compared to MW-AC and unmodified AC with a lower dose (0.05 g/L), indicating a much more efficient adsorbent. Adsorption equilibrium followed the Langmuir isotherm model, indicating monolayer adsorption, with high correlation coefficients (R² = 0.9931 for MS-AC). Freundlich and Dubinin–Radushkevich (D–R) models supported additional surface heterogeneity and confirmed that the process is endothermic and physical in nature. These findings highlight the potential of MS-AC as a low-cost, effective adsorbent for wastewater treatment applications. | ||||
| Keywords | ||||
| Adsorption; wastewater treatment; low-cost materials; solid waste management; kinetics and isotherms | ||||
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