Figure 3
From: Changes in pore structure of coal caused by coal-to-gas bioconversion
LPGA isotherms for untreated and bioconverted coals. (A) N2 sorption isotherms; (B) CO2 sorption isotherms (Ad: adsorption; De: desorption); FHH fractal analysis from low-pressure N2 sorption data for untreated and bioconverted coals. (C) Untreated coal; (D) Treated #8 coal; (E) Treated #11 coal.
