Alvan Ade Reza, Mahidin Mahidin, Yunardi Yunardi, Asri Gani, Edi Munawar
This study investigates the optimization of CO₂ adsorption using activated serpentine in a fixed-bed reactor, focusing on the effects of particle size (50 to 150 mesh), activation temperature (650 to 850 °C), activation duration (1.5 to 4.5 h), and CO₂ flow rate (0.1 to 1.0 SLPM). Characterization results indicate that thermal activation enhances surface area, pore structure, and adsorption efficiency. Experimental findings reveal that activation at 850 °C, with a 100 mesh particle size, achieves the highest adsorption efficiency, while the 150 mesh fraction exhibits the highest adsorption rate (0.71 mL/min g). An activation duration of 1.5 h provides an optimal balance between structural stability and reactivity, whereas a flow rate of 0.5 SLPM results in the highest adsorption efficiency (R² = 99.55 %). Breakthrough curve analysis confirms that smaller particle sizes and lower flow rates extend adsorption duration and enhance overall adsorption efficiency. Kinetic modeling using the Thomas, Yoon-Nelson, and Clark models demonstrates that the Clark and Yoon-Nelson models provide the most accurate predictions, with R² values reaching up to 99.55 % and lower Reduced Chi-Square values across various experimental conditions. The optimized adsorption conditions, including 850 °C activation, 100 mesh particle size, 1.5 h activation duration, and a 0.5 SLPM flow rate, achieve a balance between adsorption capacity and kinetics. These findings contribute to the advancement of serpentine-based adsorbents for carbon capture and storage (CCS) applications, supporting efforts to mitigate industrial CO₂ emissions. © 2025
Postgraduate School of Engineering Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia; Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia
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