Fixed bed adsorption dynamics of CO2/CH4 mixtures in zeolite 13X for biogas upgrading
The separation performance of CO2/CH4 mixtures in binderless beads of zeolite 13X has been studied in a fixed bed adsorption system for biogas upgrading strategies to bio-methane. Zeolite 13X proved to be very efficient for the separation leading to breakthrough curves that show a plateau of pure CH...
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| Formato: | conferenceObject |
| Idioma: | eng |
| Publicado em: |
2017
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| Texto completo: | http://hdl.handle.net/10198/14292 |
| País: | Portugal |
| Oai: | oai:bibliotecadigital.ipb.pt:10198/14292 |
| Resumo: | The separation performance of CO2/CH4 mixtures in binderless beads of zeolite 13X has been studied in a fixed bed adsorption system for biogas upgrading strategies to bio-methane. Zeolite 13X proved to be very efficient for the separation leading to breakthrough curves that show a plateau of pure CH4 of approximately 4 minutes depending of the operating conditions chosen. The separation performance for CO2/CH4 measured by the selectivities range from 37 at a low pressure of 0.1 MPa to approximately 5.0 at the high temperature of 423 K. A mathematical model for fixed bed adsorption studies was used and validated through the experimental data predicting with good accuracy the behavior of the transient breakthrough experiments being a valuable tool for the analysis and design of cyclic adsorption processes (PSA) for biogas upgrading strategies to biomethane and CO2 capture using 13X zeolite. |
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