Preparation and characterization of biochar from four different solid wastes and its ampicillin adsorption performance
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View abstract on PubMed
Summary
This summary is machine-generated.This study explores using biochar from organic waste to remove the antibiotic ampicillin from water. Digestate-derived biochar (DSB) showed the highest adsorption capacity, offering a sustainable waste management and water treatment solution.
Area Of Science
- Environmental Chemistry
- Materials Science
- Waste Management
Background
- Emerging pollutants like ampicillin (AMP) pose risks to water systems.
- Biochar (BC) production from organic waste is a sustainable approach for pollutant removal.
- The use of anaerobic digestate for BC production for antibiotic adsorption is underexplored.
Purpose Of The Study
- To investigate the efficacy of BC derived from various organic wastes (peanut shells, coffee grounds, digestates, oyster shells) for AMP adsorption.
- To characterize the produced BC materials and correlate their properties with adsorption performance.
- To evaluate the adsorption kinetics, isotherms, and thermodynamics for AMP removal.
Main Methods
- Biochar production via pyrolysis, with temperature optimization using thermogravimetric analysis (TGA).
- Material characterization using BET, SEM, FTIR, and XRD.
- Batch adsorption experiments to determine AMP removal efficiency, kinetics, isotherms, and thermodynamics.
Main Results
- Digestate-derived biochar (DSB) exhibited superior properties for AMP adsorption, including more functional groups, a mesoporous structure, and calcite crystals.
- All BC materials followed Freundlich and Langmuir isotherms and Elovich kinetics, indicating mixed physical and chemical adsorption.
- DSB achieved a maximum adsorption capacity of 53.81 mg g⁻¹ at 150 mg dosage, pH 2, and 60 °C.
- Adsorption process was spontaneous and endothermic.
Conclusions
- Organic waste-derived biochar, particularly DSB, is effective for ampicillin removal.
- This research provides a novel method for waste valorization and water remediation.
- Findings support the selection of suitable solid wastes for developing efficient BC adsorbents.
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