Carbon dioxide injection in coal seams is known to improve the methane production of the coal seam. This improvement is due to the preferential adsorption of CO2 in coal with respect to CH4: an injection of CO2 thus results in adsorption of CH4.
Actually, in the real life, coal seam gas is related with humidity. It means that the adsorption of CO2 CH4 would be considered with the presence of water. We would like to know how water has an effect to suction methane process. In this work, we focus on the competitive adsorption behavior of CO2 and CH4 in pore with the presence of water. We will apply grand canonical Monte Carlo (GCMC) simulation.GCMC can give us the amount adsorbed as well as the microscopic picture to better understand the adsorption of coal seam gases.