Gas adsorption is considered as one of the major
storing mechanism during carbon dioxide (CO2) sequestration
in coal bed seam. It is necessary to study the CO2 adsorption
and desorption isotherms on Malaysian coals. The coal samples
which have tested in this study are from lower and upper
zones, Merit-Pila mine and Area 1 and Area 4 coordinates,
Mukah-Balingian mine, Sarawak, Malaysia. BELSORP-miniII
instrument have been utilized to measure CO2 adsorption and
desorption isotherm of those coal samples at 298.15 K (25°C)
and at up to 101.33 kPa (1 atm).