LAPSE:2021.0066
Published Article
LAPSE:2021.0066
Batch Syngas Fermentation by Clostridium carboxidivorans for Production of Acids and Alcohols
Fabiana Lanzillo, Giacomo Ruggiero, Francesca Raganati, Maria Elena Russo, Antonio Marzocchella
February 22, 2021
Syngas (CO, CO2, and H2) has attracted special attention due to the double benefit of syngas fermentation for carbon sequestration (pollution reduction), while generating energy. Syngas can be either produced by gasification of biomasses or as a by-product of industrial processes. Only few microorganisms, mainly clostridia, were identified as capable of using syngas as a substrate to produce medium chain acids, or alcohols (such as butyric acid, butanol, hexanoic acid, and hexanol). Since CO plays a critical role in the availability of reducing equivalents and carbon conversion, this work assessed the effects of constant CO partial pressure (PCO), ranging from 0.5 to 2.5 atm, on cell growth, acid production, and solvent production, using Clostridium carboxidivorans. Moreover, this work focused on the effect of the liquid to gas volume ratio (VL/VG) on fermentation performances; in particular, two VL/VG were considered (0.28 and 0.92). The main results included—(a) PCO affected the growth kinetics of the microorganism; indeed, C. carboxidivorans growth rate was characterized by CO inhibition within the investigated range of CO concentration, and the optimal PCO was 1.1 atm (corresponding to a dissolved CO concentration of about 25 mg/L) for both VL/VG used; (b) growth differences were observed when the gas-to-liquid volume ratio changed; mass transport phenomena did not control the CO uptake for VL/VG = 0.28; on the contrary, the experimental CO depletion rate was about equal to the transport rate in the case of VL/VG = 0.92.
Keywords
Butanol, Clostridium carboxidivorans, Ethanol, growth kinetics, Syngas
Suggested Citation
Lanzillo F, Ruggiero G, Raganati F, Russo ME, Marzocchella A. Batch Syngas Fermentation by Clostridium carboxidivorans for Production of Acids and Alcohols. (2021). LAPSE:2021.0066
Author Affiliations
Lanzillo F: Department of Chemical, Materials and Production Engineering−University of Naples Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy
Ruggiero G: Department of Chemical, Materials and Production Engineering−University of Naples Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy [ORCID]
Raganati F: Department of Chemical, Materials and Production Engineering−University of Naples Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy [ORCID]
Russo ME: Institute for Research on Combustion−National Research Council (CNR), P.le V. Tecchio 80, 80125 Napoli, Italy [ORCID]
Marzocchella A: Department of Chemical, Materials and Production Engineering−University of Naples Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy
Journal Name
Processes
Volume
8
Issue
9
Article Number
E1075
Year
2020
Publication Date
2020-09-01
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr8091075, Publication Type: Journal Article
Record Map
Published Article

LAPSE:2021.0066
This Record
External Link

doi:10.3390/pr8091075
Publisher Version
Download
Files
Feb 22, 2021
Main Article
License
CC BY 4.0
Meta
Record Statistics
Record Views
406
Version History
[v1] (Original Submission)
Feb 22, 2021
 
Verified by curator on
Feb 22, 2021
This Version Number
v1
Citations
Most Recent
This Version
URL Here
https://psecommunity.org/LAPSE:2021.0066
 
Original Submitter
Calvin Tsay
Links to Related Works
Directly Related to This Work
Publisher Version