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In this work, batch and dynamic adsorption tests are coupled for an accurate evaluation of CO₂ adsorption performance of three different activated carbons (AC) obtained from olive stones by chemical activation followed by physical activation with CO₂ at varying times (i.e., 20, 40, and 60 h). Kinetic and thermodynamic CO₂ adsorption tests from simulated flue gas at different temperatures and CO₂ pressures are carried out under both batch (a manometric equipment operating with pure CO₂) and dynamic (a lab-scale fixed-bed column operating with a CO₂/N₂ mixture) conditions. The textural characterization of the AC samples shows a direct dependence of both micropore and ultramicropore volume on the activation time; hence, AC60 has the higher contribution. The adsorption tests conducted at 273 and 293 K showed that when CO₂ pressure is lower than 0.3 bar, the lower the activation time, the higher CO₂ …