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Microbial electrosynthesis from CO2 : forever a promise?

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Abstract
Microbial electrosynthesis (MES) is an electrochemical process used to drive microbial metabolism for bio-production, such as the reduction of CO2 into industrially relevant organic products as an alternative to current fossil-fuel-derived commodities. After a decade of research on MES from CO2, figures of merit have increased significantly but are plateauing yet far from those expected to allow competitiveness for synthesis of commodity chemicals. Here we discuss the substantial technological shortcomings still associated with MES and evoke possible ways to mitigate them. It appears particularly challenging to obtain both relevant production rates (driven by high current densities) and energy conversion efficiency (i.e. low cell voltage) in microbial-compatible electrolytes. More competitive processes could arise by decoupling effective abiotic electroreductions (e.g. CO2 to CO or ethanol; H-2 evolution) with subsequent fermentation processes.
Keywords
CARBON-DIOXIDE, ESCHERICHIA-COLI, FERMENTATION, ELECTROLYSIS, PERFORMANCE, REDUCTION, HYDROGEN, REACTOR, ROUTE, WATER

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MLA
Prévoteau, Antonin, et al. “Microbial Electrosynthesis from CO2 : Forever a Promise?” CURRENT OPINION IN BIOTECHNOLOGY, edited by Joe Shaw and Kirsten Benjamin, vol. 62, 2020, pp. 48–57, doi:10.1016/j.copbio.2019.08.014.
APA
Prévoteau, A., Carvajal Arroyo, J. M., Ganigué, R., & Rabaey, K. (2020). Microbial electrosynthesis from CO2 : forever a promise? CURRENT OPINION IN BIOTECHNOLOGY, 62, 48–57. https://doi.org/10.1016/j.copbio.2019.08.014
Chicago author-date
Prévoteau, Antonin, Jose Maria Carvajal Arroyo, Ramon Ganigué, and Korneel Rabaey. 2020. “Microbial Electrosynthesis from CO2 : Forever a Promise?” Edited by Joe Shaw and Kirsten Benjamin. CURRENT OPINION IN BIOTECHNOLOGY 62: 48–57. https://doi.org/10.1016/j.copbio.2019.08.014.
Chicago author-date (all authors)
Prévoteau, Antonin, Jose Maria Carvajal Arroyo, Ramon Ganigué, and Korneel Rabaey. 2020. “Microbial Electrosynthesis from CO2 : Forever a Promise?” Ed by. Joe Shaw and Kirsten Benjamin. CURRENT OPINION IN BIOTECHNOLOGY 62: 48–57. doi:10.1016/j.copbio.2019.08.014.
Vancouver
1.
Prévoteau A, Carvajal Arroyo JM, Ganigué R, Rabaey K. Microbial electrosynthesis from CO2 : forever a promise? Shaw J, Benjamin K, editors. CURRENT OPINION IN BIOTECHNOLOGY. 2020;62:48–57.
IEEE
[1]
A. Prévoteau, J. M. Carvajal Arroyo, R. Ganigué, and K. Rabaey, “Microbial electrosynthesis from CO2 : forever a promise?,” CURRENT OPINION IN BIOTECHNOLOGY, vol. 62, pp. 48–57, 2020.
@article{8641595,
  abstract     = {{Microbial electrosynthesis (MES) is an electrochemical process used to drive microbial metabolism for bio-production, such as the reduction of CO2 into industrially relevant organic products as an alternative to current fossil-fuel-derived commodities. After a decade of research on MES from CO2, figures of merit have increased significantly but are plateauing yet far from those expected to allow competitiveness for synthesis of commodity chemicals. Here we discuss the substantial technological shortcomings still associated with MES and evoke possible ways to mitigate them. It appears particularly challenging to obtain both relevant production rates (driven by high current densities) and energy conversion efficiency (i.e. low cell voltage) in microbial-compatible electrolytes. More competitive processes could arise by decoupling effective abiotic electroreductions (e.g. CO2 to CO or ethanol; H-2 evolution) with subsequent fermentation processes.}},
  author       = {{Prévoteau, Antonin and Carvajal Arroyo, Jose Maria and Ganigué, Ramon and Rabaey, Korneel}},
  editor       = {{Shaw, Joe and Benjamin, Kirsten}},
  issn         = {{0958-1669}},
  journal      = {{CURRENT OPINION IN BIOTECHNOLOGY}},
  keywords     = {{CARBON-DIOXIDE,ESCHERICHIA-COLI,FERMENTATION,ELECTROLYSIS,PERFORMANCE,REDUCTION,HYDROGEN,REACTOR,ROUTE,WATER}},
  language     = {{eng}},
  pages        = {{48--57}},
  title        = {{Microbial electrosynthesis from CO2 : forever a promise?}},
  url          = {{http://dx.doi.org/10.1016/j.copbio.2019.08.014}},
  volume       = {{62}},
  year         = {{2020}},
}

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