Synergizing Carbon Capture Storage and Utilization in a Biogas Upgrading Lab-scale Plant Based on Calcium Chloride: Influence of Precipitation Parameters
Herein a strategy for biogas upgrading in a continuous flow absorption unit using CaCl 2 as capturing agent is reported. This process is presented as an alternative to the standard physical regeneration processes to capture carbon dioxide (CO 2 ) from biogas effluents with inherent high energy penal...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/163120 |
| Acceso en línea: | https://hdl.handle.net/11441/163120 https://doi.org/10.1016/j.scitotenv.2019.03.204 |
| Access Level: | acceso abierto |
| Palabra clave: | Biogas upgrading Calcium carbonate precipitation Carbon capture and utilization Chemical absorption |
| Sumario: | Herein a strategy for biogas upgrading in a continuous flow absorption unit using CaCl 2 as capturing agent is reported. This process is presented as an alternative to the standard physical regeneration processes to capture carbon dioxide (CO 2 ) from biogas effluents with inherent high energy penalties. This work showcases a systematic study of the main parameters (reaction time, reaction temperature, and molar ratio reactant/precipitator) affecting calcium carbonate (CaCO 3 ) precipitation efficiency in a reaction between sodium carbonate (Na 2 CO 3 ) and CaCl 2 . In addition, the purity and main characteristics of the obtained product were carefully analysed via in a combined characterization study using Raman, XRD, and SEM. Our results indicate that acceptable precipitation efficiencies between 62 and 93% can be reached by fine tuning the studied parameters. The characterization techniques evidence pure CaCO 3 in a calcite structure. These results confirmed the technical feasibility of this alternative biogas upgrading process through CaCO 3 production. |
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