Coal Properties and Utilization

Coal seams hold vast quantities of methane trapped within their porous structure, and understanding how that gas adsorbs onto coal surfaces, migrates through low-permeability rock, and can be selectively displaced by injected CO₂ sits at the center of coalbed methane research. Recovering this methane offers a relatively clean fossil fuel source while simultaneously storing a greenhouse gas underground, but the practicality of that exchange depends on coal rank, pore geometry, and the geological conditions that govern reservoir behavior. Researchers are actively working out why permeability changes so dramatically as gas is extracted and how microbial communities within coal beds contribute to ongoing methane generation long after conventional geological processes have slowed. Questions around the spontaneous combustion risk during mining and the feasibility of enhanced recovery in low-rank coals remain open, making this an area where fundamental materials science, subsurface geology, and environmental engineering converge.

Works

35,494

Total citations

470,768

Keywords

Coalbed MethaneCO2 SequestrationCoal PermeabilityMethane AdsorptionPore StructureLow-Rank Coals