![]() ![]() ![]() The comparable adsorption capacity is attributed to the intact samples' channel-like pores and microfractures, where high density CO2 adsorption occurs. The intact and powdered samples of bituminous coal, on the other hand, exhibited comparable adsorption capacities. The powdered samples of the anthracitic samples had a higher adsorption than that of intact samples due to the exposed adsorption sites. The adsorption isotherms of intact anthracite and bituminous samples were compared to that of the powdered samples. Isothermal adsorption experiments were carried out at 298.15 K in two pressure ranges: less than 6.1 MPa and up to 6.4 MPa relevant to gas/liquid adsorption. Manometric adsorption experiments were carried out on two anthracite and one bituminous coal samples. This study examines the influence of subcritical pressure and the physical nature (intact and powder) of coal samples on CO2 adsorption capacity and kinetics in the context of CO2 sequestration in shallow level coal seams. ![]()
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