Table 6. Parameters of Methane Adsorption/Desorption and Desorption Efficiency.
| adsorption |
desorption |
||||||
|---|---|---|---|---|---|---|---|
| coal sample | VL (cm3 g–1) | PL (MPa) | VL (cm3 g–1) | PL (MPa) | c(cm3 g–1) | theoretical desorption rate (%) | recovery factor (%) |
| D01-JM | 18.10 | 3.73 | 4.59 | 4.36 | 4.36 | 75.91 | 66.62 |
| D01-AM | 16.85 | 4.30 | 4.49 | 3.24 | 3.24 | 78.34 | 69.32 |
| HL-JM | 9.31 | 2.81 | 7.00 | 4.95 | 2.67 | 71.34 | 62.03 |
| HL-AM | 8.12 | 4.06 | 6.31 | 6.53 | 2.01 | 75.28 | 67.75 |
| D02-JM | 18.67 | 3.22 | 14.40 | 4.52 | 4.22 | 77.41 | 67.07 |
| D02-AM | 15.68 | 4.74 | 12.48 | 6.73 | 3.14 | 79.96 | 72.46 |
| D03-JM | 19.55 | 3.71 | 15.52 | 5.47 | 4.24 | 78.34 | 69.32 |
| D03-AM | 17.55 | 4.34 | 14.71 | 6.22 | 3.17 | 81.97 | 73.50 |