Kinetic Pathways for Uranium Adsorption from Contaminated Wastewater Using Activated Carbon Derived from Corn Cob as a Biosorbent
Hamed, S., Samir, N., Atrees, M., Abdelbasier, A. (2025). Kinetic Pathways for Uranium Adsorption from Contaminated Wastewater Using Activated Carbon Derived from Corn Cob as a Biosorbent. EKB Journal Management System, 68(11), 25-40. doi: 10.21608/ejchem.2025.389268.11821
Shymaa Mahmoud Hamed; Noha Samir; Mohamed Atrees; Ahmed M. Abdelbasier. "Kinetic Pathways for Uranium Adsorption from Contaminated Wastewater Using Activated Carbon Derived from Corn Cob as a Biosorbent". EKB Journal Management System, 68, 11, 2025, 25-40. doi: 10.21608/ejchem.2025.389268.11821
Hamed, S., Samir, N., Atrees, M., Abdelbasier, A. (2025). 'Kinetic Pathways for Uranium Adsorption from Contaminated Wastewater Using Activated Carbon Derived from Corn Cob as a Biosorbent', EKB Journal Management System, 68(11), pp. 25-40. doi: 10.21608/ejchem.2025.389268.11821
Hamed, S., Samir, N., Atrees, M., Abdelbasier, A. Kinetic Pathways for Uranium Adsorption from Contaminated Wastewater Using Activated Carbon Derived from Corn Cob as a Biosorbent. EKB Journal Management System, 2025; 68(11): 25-40. doi: 10.21608/ejchem.2025.389268.11821

Kinetic Pathways for Uranium Adsorption from Contaminated Wastewater Using Activated Carbon Derived from Corn Cob as a Biosorbent

Egyptian Journal of Chemistry
Volume 68, Issue 11, November 2025, Page 25-40  XML PDF (668.23 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2025.389268.11821
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Authors
Shymaa Mahmoud Hamed email 1; Noha Samir2; Mohamed Atreesorcid 3; Ahmed M. Abdelbasier4
1Reactors Materials, Nuclear Materials Authority, New-Cairo
2Faculty of graduate studies environmental research Ain Shams University
3Nuclear Materials Authority, Maadi Road, Elqattamia, Cairo, Egypt. P.O. 530
4Environment Dept, Ain Shams University
Abstract
With the continuous development of the nuclear industry, the amount of uranium containing wastewater discharged from the production process is increasing, which poses a great threat to the environment and human health. Therefore, it is an urgent task to find safe, environmentally friendly and efficient water treatment agents. This study evaluated the kinetic behavior and adsorption performance of corncobs-derived activated carbon for uranium removal from water. The activated carbon was produced through pyrolysis and characterized using ESEM (Environmental scanning electron microscopy ) , EDX (Energy-dispersive X-ray spectroscopy), and FTIR (Fourier transform infrared spectroscopy) to analyze its structural properties. Batch kinetic experiments investigated the influence of pH, contact time, temperature, particle size, and adsorbent dosage on uranium adsorption. Under optimized conditions, the adsorbent achieved 88.3% uranium removal with a maximum capacity of 7.27 mg/g. Kinetic analysis revealed that the adsorption process followed pseudo-first-order kinetics, while equilibrium data aligned with the Langmuir isotherm model. The study also noted a correlation between uranium removal and organic pollutant degradation, as indicated by decreasing COD (Chemical oxygen demand) and BOD (Biological oxygen demand) levels initially. However, beyond 60% uranium removal, COD and BOD values rose, suggesting the need to optimize contact time and dosage for kinetic efficiency. Elution with 1M HCl recovered 78.5% of uranium, demonstrating the adsorbent’s reusability. These findings highlight the potential of agricultural waste-based adsorbents for kinetically controlled heavy metal and organic pollutant remediation

Keywords: Activated carbon, corn-cobs waste; adsorption; uranium removal; Kinetics.
Keywords
Activated carbon, corn-cobs waste; adsorption; uranium removal; Kinetics
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