Towards a design of a pressure swing adsorption unit for small scale biogas upgrading at

Rafael L.S. Canevesi, Carlos E. Borba, Edson A. Da Silva, Carlos A. Grande

Research output: Chapter in Book/Report/Conference proceedingConference contribution

19 Scopus citations


Pressure Swing Adsorption (PSA) is a well-known commercial technique for upgrading biogas. There are many PSA units installed around the world with capacities for biogas upgrading between 400 - 15000 m3/day. These units consist in four columns and operate with a pressure between 3-10 bar and a regeneration pressure up to 0.1 bar. A large majority of these PSA units is packed with carbon molecular sieve (CMS) as adsorbent. We intend to demonstrate that process developments are also necessary to downscale PSA units to treat smaller scales (< 100 m3/day). In this work we report experimental and theoretical analysis of a PSA unit packed with CMS as selective material with variable configurations using different cycles and column arrangements. Configurations with two, three, four and six columns are evaluated using a synthetic gas mixture (40% CO2 balanced by CH4) and keeping the target of producing pipeline quality bio-methane.
Original languageEnglish (US)
Title of host publicationEnergy Procedia
PublisherElsevier Ltd.
Number of pages6
StatePublished - Jan 1 2019
Externally publishedYes


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