Investigation of Isotherm Models for the Adsorptive Removal of Amoxicillin from Simulated Solution Using Groundnut Shell Biochar
Student: KINGSLEY CHUKWUNENYE OBIOMA (Project, 2025)
Department of Industrial Chemistry
Ekiti State University, Ado-Ekiti, Ekiti State
Abstract
The persistence of pharmaceutical pollutants, particularly antibiotics like amoxicillin, in water sources poses significant environmental and public health challenges. This study investigates the effectiveness of groundnut shell biochar (GNSB) as an adsorbent for removing amoxicillin from aqueous solutions. GNSB was prepared via pyrolysis and characterized for its adsorption capacity under varying pH, contact times, and initial concentrations. Batch adsorption experiments demonstrated high removal efficiency, with an optimal pH of 6 and a maximum removal efficiency of 88% at lower concentrations. Adsorption data aligned closely with the Langmuir isotherm model, indicating monolayer adsorption on a homogeneous surface, with a maximum capacity of 24.12 mg/g. Freundlich and Temkin isotherms further highlighted the heterogeneous surface properties and adsorbate interactions. This study underscores GNSB's potential as an affordable and sustainable alternative for treating pharmaceutical-contaminated water, advancing environmental remediation efforts.
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For the full publication, please contact the author directly at: obiomak26@gmail.com
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- University of Port Harcourt Teaching Hospital, Port Harcourt , River State 6
- University of Port-Harcourt, Rivers State 232
- University of Uyo, Akwa Ibom State 217
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- Veritas University, Bwari, FCT, Abuja 2
- Waziri Umaru Federal Polytechnic, Birnin Kebbi, Kebbi State 4
- Western Delta University, Oghara, Delta State 5
- Yaba College of Technology, Yaba, Lagos State 16
- Yobe State University, Damaturu, Yobe State 3
- Yusuf Maitama Sule University, Kano, Kano State 3