Journal
ENERGY CONVERSION AND MANAGEMENT
Volume 251, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2021.114987
Keywords
Cathodic electro-fermentation; ABE fermentation; Process optimization; Butanol; Hydrogen
Categories
Funding
- National Natural Science Foundation of China [51778171]
- Heilongjiang Provincial Natural Science Foundation of China [ZD2021E003]
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology [QA201928]
Ask authors/readers for more resources
By optimizing the ABE fermentation process, this study successfully increased the co-production of butanol and H2, demonstrating an effective approach to manipulate microbial metabolism for enhanced production.
To develop an effective acetone-butanol-ethanol (ABE) fermentation process for the enhanced co-production of butanol and H2, a series of neutral red mediated cathodic electro-fermentation (CEF) processes of Clostridium beijerinckii NCIMB 8052 were conducted with/without exogenous butyric acid as the co-substrate of glucose. The cathode potential, NR dosage, glucose concentration and exogenous butyric acid concentration were optimized progressively. The results showed that the most favorable cathode potential, NR dosage, glucose concentration and exogenous butyric acid was-0.60 V (vs Ag/AgCl), 0.50 mmol/L, 30 g/L and 3.00 g/L, respectively. With the optimal condition, the metabolism in the CEF process of C. beijerinckii NCIMB 8052 was well manipulated, resulting the excellent production of butanol and H2 as high as 10.85 +/- 0.45 g/L and 4.33 +/- 0.40 L/L-medium, respectively. The excellent butanol yield of 0.40 +/- 0.00 g/g-glucose (0.60 +/- 0.01 mol-C/mol-C) and H2 yield of 161.69 +/- 19.28 mL/g-glucose resulted an energy recovery (ER) and energy recovery efficiency (ERE) as high as 446.90 +/- 21.39 kJ/L-medium and 95.85 +/- 1.62%, respectively. The optimized CEF process demonstrates an effective approach to manipulating the microbial metabolism of Clostridia for the enhanced co-production of butanol and H-2.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available