Abstract:
This article presents an experimental approach for the determination of the adsorption isotherms of methane on
activated carbon that is essential for methane storage purposes. The experiments incorporated a constant-volume-variable-pressure
(CVVP) apparatus, and two types of activated carbon have been investigated, namely, activated carbon derived from the low rank
coal of the East of Kalimantan, Indonesia, and a Carbotech activated carbon. The isotherm results which cover temperatures from
(300 to 318) K and pressures up to 3.5 MPa are analyzed using the Langmuir, T oth, and Dubinin-Astakhov (D-A) isotherm
models. The heat of adsorption for the single component methane-activated carbon system, which is concentration- and
temperature-dependent, is determined from the measured isotherm data.
