Synergizing carbon capture storage and utilization in a biogas upgrading lab-scale plant based on calcium chloride: Influence of precipitation parameters

Baena-Moreno, Francisco M., Rodríguez-Galán, Mónica, Vega, Fernando, Reina, T.R., Vilches, Luis F. and Navarrete, Benito (2019) Synergizing carbon capture storage and utilization in a biogas upgrading lab-scale plant based on calcium chloride: Influence of precipitation parameters Science of The Total Environment, 670. pp. 59-66.

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Abstract

Herein a strategy for biogas upgrading in a continuous flow absorption unit using CaCl2 as capturing agent is reported. This process is presented as an alternative to the standard physical regeneration processes to capture carbon dioxide (CO2) 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 (CaCO3) precipitation efficiency in a reaction between sodium carbonate (Na2CO3) and CaCl2. 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 CaCO3 in a calcite structure. These results confirmed the technical feasibility of this alternative biogas upgrading process through CaCO3 production.

Item Type:	Article
Divisions :	Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :	Name Email ORCID Baena-Moreno, Francisco M. Rodríguez-Galán, Mónica Vega, Fernando Reina, T.R. t.ramirezreina@surrey.ac.uk Vilches, Luis F. Navarrete, Benito
Date :	20 June 2019
Funders :	Engineering and Physical Sciences Research Council (EPSRC)
DOI :	10.1016/j.scitotenv.2019.03.204
Copyright Disclaimer :	© 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords :	Carbon capture and utilization; Biogas upgrading; Calcium carbonate precipitation; Chemical absorption
Depositing User :	Clive Harris
Date Deposited :	09 Apr 2019 07:43
Last Modified :	16 Mar 2020 02:08
URI:	http://epubs.surrey.ac.uk/id/eprint/850996

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