Novel Adsorption-Reaction Process for Biomethane Purification/Production and Renewable Energy Storage.

ABSTRACT: This work proposes an innovative method for the simultaneous upgrading of biogas streams and valorization of the separated CO₂, through its conversion to renewable methane. To this end, two sorptive reactors were filled with a layered bed containing a CO₂ sorbent (K-promoted hydrotalcite) and a methanation catalyst (Ru/Al₂O₃). The continuous cyclic operation of the parallel sorptive reactors was carried out by alternately feeding a biogas stream (CO₂/CH₄ mixture) or H₂. The CO₂/CH₄ mixture is fed to the sorptive reactor during the sorption stage, with CO₂ being captured by the sorbent and CH₄ exiting as a purified stream (i.e., as biomethane). During the reactive regener

SUBMITTER: Martins JA 

PROVIDER: S-EPMC9793493 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature