The adsorption of carbon dioxide into slurry was carried out using a stirred absorber in the presence of solid particles like activated carbon, white carbon and fused alumina at 25℃ and 1 atm. The liquid-side mass transfer coefficient of CO₂ gas could be obtained using the Danckwerts’plot with the experimental absorption rates. The adsorption equilibrium between the dissolved gas in the solution and the adsorbed gas onto the surfaces of solid particles was instantaneously attained linearly, and the adsorption equilibrium constants of activated carbon, white carbon and fused alumina were 57.4, 4.75 and 0, respectively. The surface renewal model modified with the shuttle mechanism could explain the enhancement phenomena of absorption rates into slurry of the particles smaller than or equal to the liquid thickness calculated by the film theory.