Abstract: In this paper, the main source and application of CO2,the common methods of industrial separation and recovery of CO2 were introduced. The application of activated carbons in separating gas used PSA technology, and the common methods of adsorbents regeneration in process of PSA were also discussed. Factors including pore structure and surface chemical structure of activated carbons that influenced the performance of adsorption and recovery of CO2 on activated carbons were reviewed.