Martin, AwaludinLoh, Wai SoongRahman, Kazi AfzalurThu, KyawSurayawan, BambangNasruddin, NasruddinChoon, Kim2019-07-012019-07-012019-07-01wahyu sari yenihttps://pubs.acs.org/doi/10.1021/je100495whttps://repository.unri.ac.id/handle/123456789/9719This 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.enArticle