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Pressure Swing Adsorption for Biogas Upgrading with Carbon Molecular Sieve

Abstract : This work focuses on the study of a pressure swing adsorption (PSA) process for biogas upgrading using a carbon molecular sieve adsorbent. Adsorption equilibrium and diffusion data of pure components were used to predict the multicomponent behavior. To validate the prediction of multicomponent adsorption at different concentrations, breakthrough curve experiments were performed for a gas mixture at different pressures (0.25, 0.5, 1, and 5 bar). Based on basic information, a model was used to predict the performance of a two-column PSA unit. The mixture used as feed was 60% CH4 and 40% CO2 with pressure swings between 5 bar in adsorption mode to 0.1 bar in blowdown. Experimental data demonstrated that the model could describe the PSA performance with good accuracy. We have evaluated the influence of different feed times in the biomethane recovery and purity. Biomethane purity higher than 97.5% with recovery higher than 90% was obtained.
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Contributor : Rafael Luan Canevesi <>
Submitted on : Sunday, January 3, 2021 - 4:21:11 PM
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Rafael Luan Canevesi, Kari Andreassen, Edson da Silva, Carlos Borba, Carlos Grande. Pressure Swing Adsorption for Biogas Upgrading with Carbon Molecular Sieve. Industrial and engineering chemistry research, American Chemical Society, 2018, 57 (23), pp.8057-8067. ⟨10.1021/acs.iecr.8b00996⟩. ⟨hal-03093098⟩



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