Assessment of industrial waste for adsorption and capture of CO2: Dynamic and static capture system

Green synthesis of polypyrrole for CO2 capture from humid flue gases

“…When the dynamic adsorption capacity was measured, some adsorption sites of the adsorbent could not be saturated with the continuously flowing adsorbate gas, where the static adsorption represents the saturated adsorption capacity, thus the dynamic adsorption capacity was lower than the static adsorption capacity. 75,76…”

“…When the dynamic adsorption capacity was measured, some adsorption sites of the adsorbent could not be saturated with the continuously flowing adsorbate gas, where the static adsorption represents the saturated adsorption capacity, thus the dynamic adsorption capacity was lower than the static adsorption capacity. 75,76 A major challenge in current post-combustion CO 2 capture is that power plant flue gases are highly humid and require additional water removal prior to adsorption. 77 In general, adsorbents preferentially adsorb water molecules due to their strong polarity, which then occupy the effective CO 2 adsorption sites.…”

Mg–O–F Nanocomposite Catalysts Defend against Global Warming via the Efficient, Dynamic, and Rapid Capture of CO2 at Different Temperatures under Ambient Pressure

“…This adsorbent includes MgO modified with 3-aminopropyl-triethoxysilane (APTES), diethylenetriamine (DETA), and polyethylenimine (PEI), MgO prepared by a solid–state reaction, and CeO 2 . This adsorbent also includes adsorbents derived from waste materials, such as “glass industry waste: waste SiO 2 and waste Al 2 O 3 ,” for the circular economy and waste management approach. − Therefore, it is not surprising that our samples, which were prepared by mixing Mg­(OH) 2 with different wt % of NH 4 F·HF, particularly those containing 20–30% F, whether calcined at 400 or 500 °C, demonstrated a high capacity in capturing a large number of CO 2 molecules in a short period of time (1 h), see Table , at different temperatures of 5 and 30 °C.…”

Sustainable Microcrystalline Cellulose-Based Activated Carbons for a Greener Carbon Capture at Post-Combustion Conditions

“…Whilst showing substantial stability across its adsorption-desorption cycles, these MCC-based ACs do possess lower CO 2 adsorption capacities under dynamic conditions than when measured with adsorption isotherms, which were static (maximum capacity at equilibrium). This can be accounted for by CO 2 molecules gaining more mobility under increased flow rates (dynamic conditions), causing more forced molecular movements and less retention of CO 2 on the sorbent (Ramos et al, 2022), (Abdullah and Qasim, 2016). In addition, the TGA is not necessarily designed specifically for CO 2 capture, hence scaled-up systems more specifically designed for capture, such as a fixed or fluidised bed, may yield a slightly different performance of the sorbents under dynamic conditions.…”