Theory of transport and recovery in microbial electrosynthesis of acetate from CO2
Microbial electrosynthesis (MES) provides a sustainable route for the conversion of CO2 and electricity into acetate and other organics. The conversion of CO2 takes place at a biologically active cathode (‘biocathode’), which is typically separated from the anode by an ion exchange membrane. Since b...
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ftunivwagenin:oai:library.wur.nl:wurpubs/582361 2024-04-28T08:15:41+00:00 Theory of transport and recovery in microbial electrosynthesis of acetate from CO2 Dykstra, J.E. ter Heijne, A. Puig, S. Biesheuvel, P.M. 2021 application/pdf https://research.wur.nl/en/publications/theory-of-transport-and-recovery-in-microbial-electrosynthesis-of https://doi.org/10.1016/j.electacta.2021.138029 en eng https://edepot.wur.nl/546822 https://research.wur.nl/en/publications/theory-of-transport-and-recovery-in-microbial-electrosynthesis-of doi:10.1016/j.electacta.2021.138029 https://creativecommons.org/licenses/by-nc-nd/4.0/ Wageningen University & Research Electrochimica Acta 379 (2021) ISSN: 0013-4686 Amphoteric ions Bio-electrochemical systems Bipolar membranes Ion exchange membranes Multi-component mass transport Article/Letter to editor 2021 ftunivwagenin https://doi.org/10.1016/j.electacta.2021.138029 2024-04-03T15:05:04Z Microbial electrosynthesis (MES) provides a sustainable route for the conversion of CO2 and electricity into acetate and other organics. The conversion of CO2 takes place at a biologically active cathode (‘biocathode’), which is typically separated from the anode by an ion exchange membrane. Since both charged and uncharged species participate in the reaction, understanding the transport of these species through the membrane, and how this depends on the type of membrane, is of key importance. We develop a theory for ion mass transport and conversion in these types of microbial electrochemical cells. The theory includes ion transport, acid-base reactions, as well as electrochemical reactions at the electrodes. We first analyze a cell configuration including three compartments, in which the acetate recovery compartment in the middle is separated from the outer compartments by one cation exchange membrane and one anion exchange membrane, and we compare with experimental data from literature. Analysis of ion transport across the ion exchange membranes revealed that acetic acid/acetate and carbonic acid/bicarbonate species were used as proton shuttles between the catholyte compartment and the recovery compartment. We also analyzed a system including a bipolar membrane (BPM). Our results showed that a commonly made assumption that in BPMs the charge is solely carried by protons and hydroxyl ions, produced inside the BPM, is not generally correct. In our calculation charge is mainly carried by protons in the cation exchange layer of the BPM, while bisulphate and sulphate ions carry the charge in the anion exchange layer. In conclusion, we show that the ions which participate in acid-base reactions have to be considered in detail to describe and explain ion transport in MES cells and in the elements thereof such as BPMs. Article in Journal/Newspaper Carbonic acid Wageningen UR (University & Research Centre): Digital Library Electrochimica Acta 379 138029 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
Amphoteric ions Bio-electrochemical systems Bipolar membranes Ion exchange membranes Multi-component mass transport |
spellingShingle |
Amphoteric ions Bio-electrochemical systems Bipolar membranes Ion exchange membranes Multi-component mass transport Dykstra, J.E. ter Heijne, A. Puig, S. Biesheuvel, P.M. Theory of transport and recovery in microbial electrosynthesis of acetate from CO2 |
topic_facet |
Amphoteric ions Bio-electrochemical systems Bipolar membranes Ion exchange membranes Multi-component mass transport |
description |
Microbial electrosynthesis (MES) provides a sustainable route for the conversion of CO2 and electricity into acetate and other organics. The conversion of CO2 takes place at a biologically active cathode (‘biocathode’), which is typically separated from the anode by an ion exchange membrane. Since both charged and uncharged species participate in the reaction, understanding the transport of these species through the membrane, and how this depends on the type of membrane, is of key importance. We develop a theory for ion mass transport and conversion in these types of microbial electrochemical cells. The theory includes ion transport, acid-base reactions, as well as electrochemical reactions at the electrodes. We first analyze a cell configuration including three compartments, in which the acetate recovery compartment in the middle is separated from the outer compartments by one cation exchange membrane and one anion exchange membrane, and we compare with experimental data from literature. Analysis of ion transport across the ion exchange membranes revealed that acetic acid/acetate and carbonic acid/bicarbonate species were used as proton shuttles between the catholyte compartment and the recovery compartment. We also analyzed a system including a bipolar membrane (BPM). Our results showed that a commonly made assumption that in BPMs the charge is solely carried by protons and hydroxyl ions, produced inside the BPM, is not generally correct. In our calculation charge is mainly carried by protons in the cation exchange layer of the BPM, while bisulphate and sulphate ions carry the charge in the anion exchange layer. In conclusion, we show that the ions which participate in acid-base reactions have to be considered in detail to describe and explain ion transport in MES cells and in the elements thereof such as BPMs. |
format |
Article in Journal/Newspaper |
author |
Dykstra, J.E. ter Heijne, A. Puig, S. Biesheuvel, P.M. |
author_facet |
Dykstra, J.E. ter Heijne, A. Puig, S. Biesheuvel, P.M. |
author_sort |
Dykstra, J.E. |
title |
Theory of transport and recovery in microbial electrosynthesis of acetate from CO2 |
title_short |
Theory of transport and recovery in microbial electrosynthesis of acetate from CO2 |
title_full |
Theory of transport and recovery in microbial electrosynthesis of acetate from CO2 |
title_fullStr |
Theory of transport and recovery in microbial electrosynthesis of acetate from CO2 |
title_full_unstemmed |
Theory of transport and recovery in microbial electrosynthesis of acetate from CO2 |
title_sort |
theory of transport and recovery in microbial electrosynthesis of acetate from co2 |
publishDate |
2021 |
url |
https://research.wur.nl/en/publications/theory-of-transport-and-recovery-in-microbial-electrosynthesis-of https://doi.org/10.1016/j.electacta.2021.138029 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Electrochimica Acta 379 (2021) ISSN: 0013-4686 |
op_relation |
https://edepot.wur.nl/546822 https://research.wur.nl/en/publications/theory-of-transport-and-recovery-in-microbial-electrosynthesis-of doi:10.1016/j.electacta.2021.138029 |
op_rights |
https://creativecommons.org/licenses/by-nc-nd/4.0/ Wageningen University & Research |
op_doi |
https://doi.org/10.1016/j.electacta.2021.138029 |
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Electrochimica Acta |
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379 |
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138029 |
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