Ajani, A.; Adeniji, A.; Ayodabo, S.; Alade, A.; Afolabi, T.; Ganiyu, S. Removal of Diclofenac-Na from Aqueous Solution onto H3PO4 Modified Composite Clay. Preprints2022, 2022050371. https://doi.org/10.20944/preprints202205.0371.v1
APA Style
Ajani, A., Adeniji, A., Ayodabo, S., Alade, A., Afolabi, T., & Ganiyu, S. (2022). Removal of Diclofenac-Na from Aqueous Solution onto H<sub>3</sub>PO<sub>4 </sub>Modified Composite Clay. Preprints. https://doi.org/10.20944/preprints202205.0371.v1
Chicago/Turabian Style
Ajani, A., Tinuade Afolabi and Sofiat Ganiyu. 2022 "Removal of Diclofenac-Na from Aqueous Solution onto H<sub>3</sub>PO<sub>4 </sub>Modified Composite Clay" Preprints. https://doi.org/10.20944/preprints202205.0371.v1
Abstract
Under batch experiment conditions, this work seeks to successfully remove Diclofenac-Na (DCF-Na) from an aqueous solution utilizing a composite sorbent made of Bentonite, Kaolinite clay, and Worm casting (BKW). This study investigated the structural modification of the H3PO4 Modified Clay by X-ray fluorescence and the effect of selected adsorption factors – DCF-Na concentration and modified BKW composite dosage. The concentration equilibrium data was used to study six isotherm models. Freundlich isotherm model better explained the adsorption of DCF-Na onto modified BKW composite with a correlation coefficient close to 1. Kinetics models were examined, and the Elovich model gave a better fit than other kinetic models studied. Mass diffusion mechanisms and thermodynamics studies were successfully carried out. The enthalpy change values evaluated were negative, which revealed the spontaneity of DCF-Na remediation onto modified BKW, and that DCF-Na adsorption is exothermic and occurred through a physisorption process.
Chemistry and Materials Science, Inorganic and Nuclear Chemistry
Copyright:
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