PRELIMINARY RESULTS OF USAGE POSSIBILITIES OF CARBONATE AND ZEOLITIC SORBENTS IN CO_2 CAPTURE

摘要

This paper presents evaluations of carbonate and zeo-litic materials usefulness from point of view application of them as carbon dioxide sorbents. For all selected materials mineralogical examinations (XRD, SEM analysis and observation in transmitted light) were conducted. Also tex-tural characteristics (the BET surface area, mean pore diameter, pore size distribution and volume of pores) were carried out. An essential research has constituted CO_2 adsorption. CO_2 adsorption tests revealed that carbonate rocks have poor adsorption properties, their sorption capacity does not exceed 0.1 mmol/g. Therefore, they should be examined from the viewpoint of their application in mineral carbona-tion. However zeolites shown much better CO_2 adsorption parameters, thus, they can be subjected to further examinations (modification/activation) in order to determine selective and dynamic adsorption of CO_2.