The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Electrochemically Assisted Microbial Production of Hydrogen from Acetate
Abstract
Hydrogen production via bacterial fermentation is currently limited to a maximum of 4 moles of hydrogen per mole of glucose, and under these conditions results in a fermentation end product (acetate; 2 mol/mol glucose) that bacteria are unable to further convert to hydrogen. It is shown here that this biochemical barrier can be circumvented by generating hydrogen gas from acetate using a completely anaerobic microbial fuel cell (MFC). By augmenting the electrochemical potential achieved by bacteria in this MFC with an additional voltage of 250 mV or more, it was possible to produce hydrogen at the cathode directly from the oxidized organic matter. More than 90% of the protons and electrons produced by the bacteria from the oxidation of acetate were recovered as hydrogen gas, with an overall Coulombic efficiency (total recovery of electrons from acetate) of 60-78%. This is equivalent to an overall yield of 2.9 mol H2/mol acetate (assuming 78% Coulombic efficiency and 92% recovery of electrons as hydrogen). This bio-electrochemically assisted microbial system, if combined with hydrogen fermentation that produces 2-3 mol H2/mol glucose, has the potential to produce ca. 8-9 mol H2/mol glucose at an energy cost equivalent to 1.2 mol H2/mol glucose. Production of hydrogen by this anaerobic MFC process is not limited to carbohydrates, as in a fermentation process, as any biodegradable dissolved organic matter can theoretically be used in this process to generate hydrogen from the complete oxidation of organic matter.
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Cites
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Cited by
Chatenet, M., Pollet, B. G., Dekel, D. R., Dionigi, F., Deseure, J., Millet, P., Braatz, R. D., Bazant, M. Z., Eikerling, M., Staffell, I., et al. (2022) · Chemical Society Reviews · doi:10.1039/d0cs01079k · Cited by 2,025
Membrane-based processes for sustainable power generation using water
Logan, B. E., & Elimelech, M. (2012) · Nature · doi:10.1038/nature11477 · Cited by 1,644
Self-citationMicrobial Electrolysis Cells for High Yield Hydrogen Gas Production from Organic Matter
Logan, B. E., Call, D., Cheng, S., Hamelers, H. V. M., Sleutels, T. H. J. A., Jeremiasse, A. W., & Rozendal, R. A. (2008) · Environmental Science & Technology · doi:10.1021/es801553z · Cited by 1,368
Self-citationGhimire, A., Frunzo, L., Pirozzi, F., Trably, E., Escudie, R., Lens, P. N. L., & Esposito, G. (2015) · Applied Energy · doi:10.1016/j.apenergy.2015.01.045 · Cited by 1,027
Biodiversity and species competition regulate the resilience of microbial biofilm community
Feng, K., Zhang, Z., Cai, W., Liu, W., Xu, M., Yin, H., Wang, A., He, Z., & Deng, Y. (2017) · Molecular Ecology · doi:10.1111/mec.14356 · Cited by 474
Metadata
- Authors
- Liu, H., Grot, S., & Logan, B. E.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-04-22
- Volume
- 39
- Issue
- 11
- Pages
- 4317-4320
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2597326039
- Cited by
- 1,111
- References
- 1
- FWCI
- 29.49
- Type
- journal article
- Language
- en
- Open access
- closed
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