Bio-electro CO2 recycling platform based on two separated steps
dc.contributor.author
dc.date.accessioned
2021-07-02T08:59:15Z
dc.date.available
2021-07-02T08:59:16Z
dc.date.issued
2021-10-01
dc.identifier.issn
2213-3437
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dc.description.abstract
The present work assessed the alliance of microbial electrochemical technologies (METs) and fermentation in a two-step process for the electro-bioconversion of carbon dioxide (CO2) into elongated chemical building blocks. The electro bio-reduction of CO2 into acetic acid and ethanol (EtOH:HAc) at a 1-to-1 ratio is linked to a subsequent elongation step to produce C4 and C6 compounds. Key operational conditions of each step were assessed. Key parameters considered in the first step were pH, and both hydrogen and CO2 partial pressures. Concerning the second stage, selected parameters were pH, ethanol to acetate ratio, and hydrogen availability. The aim was to steer each stage's performance and to obtain higher value products. Reached EtOH:HAc proportion was over 1:1 when fed with CO2, with H2 availability and at pH around 5.3. Formed product reinforced the follow-up chain elongation processes. The fermentation step got up to C6 compounds at pH 7.0, when fed with CO2 and H2. Outcomes demonstrated that pH was a crucial factor in the overall process. The overall process carbon conversion efficiency was 38% being the CO2 transformation the limiting step. 1 kg of CO2 fed in the system resulted in the production of 0.38 kg of elongated acids (C4-C6). In other words, 1 m3 of CO2 (normal conditions) captured resulted firstly in the production of 0.90 kg CC2 and then, 0.75 kg CC4-C6 are finally acquired. The presented results pave the ground for improving the selectivity during the production of reduced commodity chemicals from CO2 and electricity
dc.description.sponsorship
The authors acknowledge funding from the Agency for Business Competitiveness of the Government of Catalonia (ACCIO; COMRDI16-1-0061) and the Spanish Ministry of Science (RTI2018-098360-B-I00). M.R-C. is grateful for the support of the Catalan Government (2021 FI_B 00499). R.B-G. is grateful for the FPI Grant BES-2015–074229 in the framework of the project CTQ2014-53718-R given by the Spanish Ministry of Economy and Competitiveness (MINECO). S.P. is a Serra Hunter Fellow (UdG-AG-575) and acknowledges the funding from the
ICREA Academia award. LEQUIA (http://www.lequia.udg.edu/) hasbeen recognized as a consolidated research group by the Catalan Government (2017-SGR-1552)
Open Access funding provided thanks to the CRUE-CSIC agreement with Elsevier
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation
info:eu-repo/grantAgreement/MINECO//CTQ2014-53718-R/ES/TECNOLOGIAS INNOVADORAS PARA LA MEJORA DE BIOGAS: DESDE LA INVESTIGACION BASICA A LA EVALUACION DE TECNOLOGIAS/
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Reproducció digital del document publicat a: https://doi.org/10.1016/j.jece.2021.105909
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Journal of Environmental Chemical Engineering, 2021, vol. 9, núm. 5, p. 105909
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Articles publicats (D-EQATA)
dc.rights
Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional
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dc.source
Romans Casas, Meritxell Blasco Gómez, Ramiro Colprim Galceran, Jesús Balaguer i Condom, Maria Dolors Puig Broch, Sebastià 2021 Bio-electro CO2 recycling platform based on two separated steps Journal of Environmental Chemical Engineering 9 5 105909
dc.subject
dc.title
Bio-electro CO2 recycling platform based on two separated steps
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.relation.projectID
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-098360-B-I00/ES/UNA SEGUNDA OPORTUNIDAD PARA EL CO2: PLATAFORMA TECNOLOGICA BASADA EN SISTEMAS BIOELECTROQUIMICOS/
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
033552
dc.contributor.funder
dc.type.peerreviewed
peer-reviewed
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dc.relation.ProjectAcronym