Advanced search
3 files | 4.60 MB Add to list

Selective enrichment establishes a stable performing community for microbial electrosynthesis of acetate from CO2

(2015) ENVIRONMENTAL SCIENCE & TECHNOLOGY. 49(14). p.8833-8843
Author
Organization
Project
Electrotalk
Project
PIEF-GA-2012-326869
Project
PLANTPOWER (PlantPower - Living plants in microbial fuel cells for clean, renewable, sustainable, efficient, in-situ bioenergy production)
Abstract
The advent of renewable energy conversion systems exacerbates the existing issue of intermittent excess power. Microbial electrosynthesis can use this power to capture CO2 and produce multicarbon compounds as a form of energy storage. As catalysts, microbial populations can be used, provided side reactions such as methanogenesis are avoided. Here a simple but effective approach is presented based on enrichment of a robust microbial community via several culture transfers with H-2:CO2 conditions. This culture produced acetate at a concentration of 1.29 +/- 0.15 g L-1 (maximum up to 1.5 g L-1; 25 mM) from CO2 at a fixed current of -5 Am-2 in fed-batch bioelectrochemical reactors at high N-2:CO2, flow rates. Continuous supply of reducing equivalents enabled acetate production at a rate of 19 +/- 2 gm(-2)d(-1) (projected cathode area) in several independent experiments. This is a considerably high rate compared with other unmodified carbon-based cathodes. 58 +/- 5% of the electrons was recovered in acetate, whereas 30 +/- 10% of the electrons was recovered in H-2 as a secondary product. The bioproduction was most likely H-2 based; however, electrochemical, confocal microscopy, and community analyses of the cathodes suggested the possible involvement of the cathodic biofilm. Together, the enrichment approach and galvanostatic operation enabled instant start-up of the electrosynthesis process and reproducible acetate production profiles.
Keywords
BIOCATHODES, CARBON-DIOXIDE, METHANOBACTERIUM, BATCH, HYDROGEN, BACTERIAL, METHANE, MIXED CULTURE, BIOELECTROCHEMICAL SYSTEMS, CELLS

Downloads

  • Patil EST 2015 SI selective enrichment for robust community MES of acetate from CO2.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 536.55 KB
  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 2.75 MB
  • Patil EST 2015 for biblio Selective enrichment establishes a stable performing community for microbial electrosynthesis of acetate from CO2.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 1.31 MB

Citation

Please use this url to cite or link to this publication:

MLA
Patil, Sunil Anil et al. “Selective Enrichment Establishes a Stable Performing Community for Microbial Electrosynthesis of Acetate from CO2.” ENVIRONMENTAL SCIENCE & TECHNOLOGY 49.14 (2015): 8833–8843. Print.
APA
Patil, S. A., Arends, J., Vanwonterghem, I., Van Meerbergen, J., Guo, K., Tyson, G. W., & Rabaey, K. (2015). Selective enrichment establishes a stable performing community for microbial electrosynthesis of acetate from CO2. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 49(14), 8833–8843.
Chicago author-date
Patil, Sunil Anil, Jan Arends, Inka Vanwonterghem, Jarne Van Meerbergen, Kun Guo, Gene W Tyson, and Korneel Rabaey. 2015. “Selective Enrichment Establishes a Stable Performing Community for Microbial Electrosynthesis of Acetate from CO2.” Environmental Science & Technology 49 (14): 8833–8843.
Chicago author-date (all authors)
Patil, Sunil Anil, Jan Arends, Inka Vanwonterghem, Jarne Van Meerbergen, Kun Guo, Gene W Tyson, and Korneel Rabaey. 2015. “Selective Enrichment Establishes a Stable Performing Community for Microbial Electrosynthesis of Acetate from CO2.” Environmental Science & Technology 49 (14): 8833–8843.
Vancouver
1.
Patil SA, Arends J, Vanwonterghem I, Van Meerbergen J, Guo K, Tyson GW, et al. Selective enrichment establishes a stable performing community for microbial electrosynthesis of acetate from CO2. ENVIRONMENTAL SCIENCE & TECHNOLOGY. 2015;49(14):8833–43.
IEEE
[1]
S. A. Patil et al., “Selective enrichment establishes a stable performing community for microbial electrosynthesis of acetate from CO2,” ENVIRONMENTAL SCIENCE & TECHNOLOGY, vol. 49, no. 14, pp. 8833–8843, 2015.
@article{6884952,
  abstract     = {The advent of renewable energy conversion systems exacerbates the existing issue of intermittent excess power. Microbial electrosynthesis can use this power to capture CO2 and produce multicarbon compounds as a form of energy storage. As catalysts, microbial populations can be used, provided side reactions such as methanogenesis are avoided. Here a simple but effective approach is presented based on enrichment of a robust microbial community via several culture transfers with H-2:CO2 conditions. This culture produced acetate at a concentration of 1.29 +/- 0.15 g L-1 (maximum up to 1.5 g L-1; 25 mM) from CO2 at a fixed current of -5 Am-2 in fed-batch bioelectrochemical reactors at high N-2:CO2, flow rates. Continuous supply of reducing equivalents enabled acetate production at a rate of 19 +/- 2 gm(-2)d(-1) (projected cathode area) in several independent experiments. This is a considerably high rate compared with other unmodified carbon-based cathodes. 58 +/- 5% of the electrons was recovered in acetate, whereas 30 +/- 10% of the electrons was recovered in H-2 as a secondary product. The bioproduction was most likely H-2 based; however, electrochemical, confocal microscopy, and community analyses of the cathodes suggested the possible involvement of the cathodic biofilm. Together, the enrichment approach and galvanostatic operation enabled instant start-up of the electrosynthesis process and reproducible acetate production profiles.},
  author       = {Patil, Sunil Anil and Arends, Jan and Vanwonterghem, Inka and Van Meerbergen, Jarne and Guo, Kun and Tyson, Gene W and Rabaey, Korneel},
  issn         = {0013-936X},
  journal      = {ENVIRONMENTAL SCIENCE & TECHNOLOGY},
  keywords     = {BIOCATHODES,CARBON-DIOXIDE,METHANOBACTERIUM,BATCH,HYDROGEN,BACTERIAL,METHANE,MIXED CULTURE,BIOELECTROCHEMICAL SYSTEMS,CELLS},
  language     = {eng},
  number       = {14},
  pages        = {8833--8843},
  title        = {Selective enrichment establishes a stable performing community for microbial electrosynthesis of acetate from CO2},
  url          = {http://dx.doi.org/10.1021/es506149d},
  volume       = {49},
  year         = {2015},
}

Altmetric
View in Altmetric
Web of Science
Times cited: