Magnetite Biochar Derived from Date Palm Tree Waste Leaves for Adsorption of Congo Red from Aqueous Solution | ||||
| Egyptian Journal of Chemistry | ||||
| Volume 68, Issue 9, September 2025, Page 205-212 PDF (386.99 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2025.333301.10727 | ||||
 View on SCiNiTO | ||||
| Author | ||||
Talal Almeelbi  
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| Department of Environment, Faculty of Environmental Sciences, King Abdulaziz University, Jeddah-21589, Saudi Arabia | ||||
| Abstract | ||||
| Magnetite biochar was prepared from date palm tree waste by pyrolysis process. The modified biochar was utilized for the removal of Congo Red (CR) dye from aqueous solutions as a model for organic pollutants. Bichar was characterized by XRD, SEM-EDX, and FTIR which confirms the incorporation of magnetite (Fe₃O₄) in biochar composite. Batch adsorption experiments reveal that magnetite biochar achieves 100% removal efficiency of CR at pH 7 within 30 min at initial concentration of 25. Isotherm studies indicate a maximum adsorption capacity of 93.1 mg/g, with the Langmuir model providing the best fit for the data with R2 = 0.9258. The pseudo-second-order reaction model fitted better for all the concentrations and observed reaction rates were found to be 0.0246 and 0.0019 g/mg.min for 20 and 100 mg CR/L, respectively. The findings underscore the potential of magnetite biochar as a sustainable and cost-effective solution for addressing dye-laden wastewater, promoting environmentally friendly practices in industrial applications. | ||||
| Keywords | ||||
| Congo Red; Magnetite biochar; organic pollutants; adsorption | ||||
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