Silica Gel as a Selective Adsorbent for Biogas Drying and Upgrading

Carlos A Grande,Kari Anne Andreassen,Aud M Bouzga,Daniela G B Morence

doi:10.1021/acs.iecr.0c00949

Carlos A Grande, Kari Anne Andreassen + Show 2 more

Open Access

https://doi.org/10.1021/acs.iecr.0c00949

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Abstract

Biogas upgrading (CO2 removal) is an essential step towards the production of bio-methane. Bio-methane can be transported in existing natural gas grids or used directly as a vehicular fuel with pro...

Highlights

Biogas is a useful source of energy, containing 40−70% of methane depending on its source.[1]
Solid lines in the figures are the fitting of the Virial model to describe an adsorption equilibrium
The large number of parameters makes it very difficult to argue that we have parameters that correspond to the absolute minimum in terms of error functions

Summary

Introduction

Biogas is a useful source of energy, containing 40−70% of methane depending on its source.[1]. Breakthrough curves of CO2−CH4 were measured in a fourcolumn PSA unit only on the narrow-pore silica gel sample. The adsorption equilibrium of CH4 and CO2 on a wide-pore silica gel (WSG) is provided in the Supporting Information.

Results

Conclusion