Abstract
Adsorbed natural gas technology has offered various advantages over the normal compression and liquefaction based energy storage. Activated carbons are the materials that have micro-porous structures as required for methane adsorption. Herein, we highlight the preparation of activated carbons using KOH and steam in combined form. The combined activated carbons have a surface area of 963 m2/g as compared to chemically activated of 764 m2/g. For the analysis of biomethane adsorption, we also report the preparation of pellets using bentonite and Kaolin. The best results obtained were found with 20 % (weight basis) of Kaolin with gravimetric methane uptake of 0.28 g/g and volumetric methane uptake of 231 v/v with 177 v/v of deliverable capacity during the desorption from storage cylinder.
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