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Tracking bio-hydrogen-mediated production of commodity chemicals from carbon dioxide and renewable electricity

This study reveals that reduction of carbon dioxide (CO2) to commodity chemicals can be functionally compartmentalized in bioelectrochemical systems. In the present example, a syntrophic consortium composed by H2-producers (Rhodobacter sp.) in the biofilm is combined with carboxidotrophic Clostridium species, mainly found in the bulk liquid. The performance of these H2-mediated electricity-driven systems could be tracked by the activity of a biological H2sensory protein identified at cathode potentials between −0.2 V and −0.3 V vs SHE. This seems to point out that such signal is not strain specific, but could be detected in any organism containing hydrogenases. Thus, the findings of this work open the door to the development of a biosensor application or soft sensors for monitoring such systems

The authors would like to thank the Spanish Ministry (CTQ2014-53718-R and CTM2013-43454-R) and the University of Girona (MPCUdG2016/137) for theirs financial support. LEQUIA and IEA have been recognised as consolidated research groups by the Catalan Government (2014-SGR-1168, and 2014-SGR-484). R. G. gratefully acknowledges support from Ghent University BOF postdoctoral fellowship (BOF15/PDO/068). P.B-V gratefully acknowledges the Catalan Government for the pre-doctoral grant received (2015FI-B2 00076)

© Bioresource Technology, 2017, vol. 228, p. 201-209

Elsevier

Manager: Ministerio de Economía y Competitividad (Espanya)
Author: Puig Broch, Sebastià
Ganigué Pagès, Ramon
Batlle Vilanova, Pau
Balaguer i Condom, Maria Dolors
Bañeras Vives, Lluís
Colprim Galceran, Jesús
Date: 2017 March
Abstract: This study reveals that reduction of carbon dioxide (CO2) to commodity chemicals can be functionally compartmentalized in bioelectrochemical systems. In the present example, a syntrophic consortium composed by H2-producers (Rhodobacter sp.) in the biofilm is combined with carboxidotrophic Clostridium species, mainly found in the bulk liquid. The performance of these H2-mediated electricity-driven systems could be tracked by the activity of a biological H2sensory protein identified at cathode potentials between −0.2 V and −0.3 V vs SHE. This seems to point out that such signal is not strain specific, but could be detected in any organism containing hydrogenases. Thus, the findings of this work open the door to the development of a biosensor application or soft sensors for monitoring such systems
The authors would like to thank the Spanish Ministry (CTQ2014-53718-R and CTM2013-43454-R) and the University of Girona (MPCUdG2016/137) for theirs financial support. LEQUIA and IEA have been recognised as consolidated research groups by the Catalan Government (2014-SGR-1168, and 2014-SGR-484). R. G. gratefully acknowledges support from Ghent University BOF postdoctoral fellowship (BOF15/PDO/068). P.B-V gratefully acknowledges the Catalan Government for the pre-doctoral grant received (2015FI-B2 00076)
Format: application/pdf
Citation: 026058
ISSN: 0960-8524
Document access: http://hdl.handle.net/10256/14107
Language: eng
Publisher: Elsevier
Collection: MINECO/PE 2015-2017/CTQ2014-53718-R
MINECO/PE 2014-2015/CTM2013-43454-R
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.biortech.2016.12.035
Articles publicats (D-EQATA)
Is part of: © Bioresource Technology, 2017, vol. 228, p. 201-209
Rights: Tots els drets reservats
Subject: Bioelectroquímica
Bioelectrochemistry
Biocombustibles
Biocarburants
Biotecnologia
Biotechnology
Title: Tracking bio-hydrogen-mediated production of commodity chemicals from carbon dioxide and renewable electricity
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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