Nuradibah Mohd Amer
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Nuradibah Mohd Amer
Official Name
Nuradibah, Mohd Amer
Alternative Name
Mohd Amer, Nuradibah A.
Nuradibah, M. A.
Amer, Nuradibah Mohd M.
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Scopus Author ID
57219024135

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  • Publication
    Synthesis of ultrasonicated amine-functionalized MgO-deposited empty fruit bunch (EFB)-derived biochar for COâ‚‚ adsorption
    (Springer, 2025)
    A. N. Shafawi
    ;
    Nuradibah Mohd Amer
    ;
    A. R. Aghamiri
    ;
    P. Lahijani
    ;
    M. Mohammadi
    ;
    A. R. Mohamed
    In this study, biochar derived from empty fruit bunch (EFB) was modified by sonication, amine functionalization, and MgO deposition to increase COâ‚‚ uptake capacity towards addressing the global warming problem. The optimal conditions for amine functionalization were a biochar to melamine mass ratio of 5:2, an activation temperature of 700 Â°C, and a heating rate of 15 Â°C/min. The sequential sonication, amine functionalization, and MgO deposition resulted in the ultrasonicated amine-functionalized MgO-deposited biochar (UAMB) with the highest CO2 uptake capacity of 84.95 mg/g, which is a 142% increase compared to the pristine biochar (35.10 mg/g). The results of XRD, SEM–EDX, FTIR, Raman, BET, Boehm titration, and XPS analysis showed that the sequential treatments improved the porosity, surface area, and surface chemistry of the modified biochar due to the presence of MgO, pyridine, pyrrole, and nitrile, resulting in a superior increase in COâ‚‚ uptake capacity. Advantageously, this modified biochar exhibited the highest affinity for COâ‚‚ compared to air, methane, and nitrogen and was stable up to 12 cycles of COâ‚‚ adsorption–desorption. Kinetic studies showed that the Avrami kinetic model best described COâ‚‚ adsorption on the biochar, with physisorption being the main adsorption mechanism and chemisorption making only a minor contribution to COâ‚‚ adsorption. COâ‚‚ capture tests in a fixed-bed adsorption system showed that the best adsorption conditions were at a gas flow rate of 30 mL/min, an initial COâ‚‚ concentration of 15%, and an adsorption temperature of 30 Â°C. The excellent performance of this modified biochar is promising for efficient COâ‚‚ capture to reduce COâ‚‚ emissions.