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Both argon and carbon dioxide were used as potential desorbent gases. The effectiveness of the adsorbent was assessed by analysing the adsorption equilibrium data and conducting fixed-bed experiments to determine the single and multicomponent dynamic adsorption behaviour. Pure component N<jats:sub>2<\/jats:sub>, CH<jats:sub>4<\/jats:sub>, Ar, and CO<jats:sub>2<\/jats:sub> isotherms were measured at three different temperatures, up to 2.5\u00a0bar, using a volumetric method. The results show that CO<jats:sub>2<\/jats:sub> exhibits the highest affinity to the solid phase, followed by CH<jats:sub>4<\/jats:sub>, N<jats:sub>2,<\/jats:sub> and Ar. Single, binary, and ternary fixed-bed experiments were performed, allowing the validation of the proposed mathematical model. Two SMB cycles were designed to separate a CH<jats:sub>4<\/jats:sub>\/N<jats:sub>2<\/jats:sub> mixture using each desorbent gas. The respective separation regions were drawn. Both processes achieved a high purity level for the methane stream (above 99%) and exhibited high recovery (above 97%). The obtained results were crossed with the previously studied BPL material, and the Maxsorb adsorbent showed better performance overall.<\/jats:p>","DOI":"10.1007\/s10450-024-00563-7","type":"journal-article","created":{"date-parts":[[2024,12,4]],"date-time":"2024-12-04T18:28:44Z","timestamp":1733336924000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Methane upgrading on pelletised Maxsorb activated carbon by gas-phase simulated moving bed"],"prefix":"10.1007","volume":"31","author":[{"given":"Rafael O. M.","family":"Dias","sequence":"first","affiliation":[]},{"given":"Maria J.","family":"Regufe","sequence":"additional","affiliation":[]},{"given":"Ana A.","family":"Pereira","sequence":"additional","affiliation":[]},{"given":"Alexandre F. 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