With increasing worldwide concern on Green House Gas (GHG)
emission and its reduction, significant interest is now directed
toward finding a practical and economical ways of enhancing
methane gas containment in coal deposits. Carbon dioxide
sequestration has been tried successfully for the recovery of
methane from coal measures rocks. A laboratory study was
undertaken to examine the effect of displacing the adsorbed
gases in coal with N2 injection. To study the feasibility of
removing the initially adsorbed gas from coal with another gas,
tests were carried out using an in-house built multi-function
outburst research rig (MFORR). Accordingly the following
laboratory tests were carried out: sorption and desorption
characteristics of CO2/CH4 mixed gas in coal, displacement
characteristics of adsorbed mixed gases with N2 injection,
displacement characteristics of adsorbed CO2 with N2 injection,
and displacement characteristics of adsorbed CH4 with N2
injection. The study revealed that CO2 desorption increased by