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Borassus aethiopum activated carbon prepared for nitrate ions removal
This work aims to study nitrate ions removal using Borassus aethiopum activated carbon (BA-AC) in a synthetic medium. BA-AC was prepared through artisanal method in order to provide a low-cost activated carbon. Physico-chemical characterization of BA-AC has shown a high-specific surface area (1431 m2/g). Analysis of surface morphology by scanning electron microscopy, mean pore diameter (2.76 nm) and adsorption/desorption isotherm resulted in the mesoporous adsorbent. The existence of functional groups (C = O; C–H; C–OH) was highlighted by Fourier Transform Infrared spectroscopy. A percentage of 60.56% for nitrate ions at pH 4 was reached. Pseudo-second-order kinetic and Langmuir isotherm were the most suitable models to describe adsorption process. The thermodynamic study revealed that adsorption mechanism occurs spontaneously (ΔG° 0). Enthalpy (ΔH° = 1.89 kJ.mol−1) and entropy (ΔS° = 19.03 J.mol−1K−1) values indicate an endothermic process with an increase of disorder at the solid–liquid interface.
Borassus aethiopum activated carbon prepared for nitrate ions removal
This work aims to study nitrate ions removal using Borassus aethiopum activated carbon (BA-AC) in a synthetic medium. BA-AC was prepared through artisanal method in order to provide a low-cost activated carbon. Physico-chemical characterization of BA-AC has shown a high-specific surface area (1431 m2/g). Analysis of surface morphology by scanning electron microscopy, mean pore diameter (2.76 nm) and adsorption/desorption isotherm resulted in the mesoporous adsorbent. The existence of functional groups (C = O; C–H; C–OH) was highlighted by Fourier Transform Infrared spectroscopy. A percentage of 60.56% for nitrate ions at pH 4 was reached. Pseudo-second-order kinetic and Langmuir isotherm were the most suitable models to describe adsorption process. The thermodynamic study revealed that adsorption mechanism occurs spontaneously (ΔG° 0). Enthalpy (ΔH° = 1.89 kJ.mol−1) and entropy (ΔS° = 19.03 J.mol−1K−1) values indicate an endothermic process with an increase of disorder at the solid–liquid interface.
Borassus aethiopum activated carbon prepared for nitrate ions removal
Koné, Horo (author) / Assémian, Alain Stéphane (author) / Tiho, Tagouèlbè (author) / Adouby, Kopoin (author) / Yao, Kouassi Benjamin (author) / Drogui, Patrick (author)
Journal of Applied Water Engineering and Research ; 10 ; 64-77
2022-01-02
14 pages
Article (Journal)
Electronic Resource
Unknown
BORASSUS AETHIOPUM MART OF BENIN USED AS REINFORCEMENT IN CONCRETE: ADHESION CARACTERISATION
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