Coal Properties and Utilization

Coal seams hold vast reserves of methane trapped within their porous structure, and understanding how that gas adsorbs onto coal surfaces, migrates through fracture networks, and responds to pressure changes is central to recovering it safely and efficiently. Beyond energy extraction, the same physical properties that govern methane storage make coal a candidate medium for sequestering carbon dioxide underground, where injected CO₂ can displace methane and remain locked in place. Researchers are actively working out how coal rank, pore geometry, and microbial activity interact to control reservoir behavior — particularly in low-rank coals, which are abundant but poorly characterized compared to their higher-rank counterparts. Open questions remain around predicting spontaneous combustion risk during mining, optimizing permeability enhancement techniques, and quantifying how microbial communities contribute to secondary methane generation over geological time.

Works

35,986

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479,828

Keywords

Coalbed MethaneCO2 SequestrationCoal PermeabilityMethane AdsorptionPore StructureLow-Rank Coals