Abstract
A carbon monoxide-adapted strain of Butyribacterium methylotrophicum was
grown submerged on different head space gas mixtures of carbon monoxide,
hydrogen and carbon dioxide. Carbon monoxide was utilized by the B.
methylotrophicum strain with acetic and butyric acid as main products.
Supplemental carbon dioxide increased initial growth rate and increased
product formation especially acetic acid production. Acetic acid was produced
in concentrations between 0.6 and 1.3 g/l. Butyric acid, lactic acid and
ethanol were produced in lesser concentrations. The total carbon yield to
products was between 90% and 110%. Carbon monoxide was almost completely
utilized before hydrogen utilization started. Supplemental hydrogen increased
the formation of butyric acid and made it possible to convert also carbon
dioxide to organic products. Separation of growth and product formation may
offer interesting process design options.
| Original language | English |
|---|---|
| Pages (from-to) | 362-367 |
| Journal | Enzyme and Microbial Technology |
| Volume | 41 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2007 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Butyribacterium methylotrophicum
- Syngas
- Fermentation
- Liquid fuel