The effect of syngas composition on the growth and product formation of Butyribacterium methylotrophicum

Harri Heiskanen, Ilkka Virkajärvi, Liisa Viikari

Research output: Contribution to journalArticleScientificpeer-review

54 Citations (Scopus)

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 languageEnglish
Pages (from-to)362-367
JournalEnzyme and Microbial Technology
Volume41
Issue number3
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

Fingerprint

Eubacterium
Carbon Monoxide
Carbon monoxide
Butyric acid
Butyric Acid
Acetic acid
Carbon Dioxide
Acetic Acid
Hydrogen
Carbon dioxide
Growth
Chemical analysis
Lactic acid
Gas mixtures
Lactic Acid
Process design
Ethanol
Carbon
Gases
Head

Keywords

  • Butyribacterium methylotrophicum
  • Syngas
  • Fermentation
  • Liquid fuel

Cite this

Heiskanen, Harri ; Virkajärvi, Ilkka ; Viikari, Liisa. / The effect of syngas composition on the growth and product formation of Butyribacterium methylotrophicum. In: Enzyme and Microbial Technology. 2007 ; Vol. 41, No. 3. pp. 362-367.
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The effect of syngas composition on the growth and product formation of Butyribacterium methylotrophicum. / Heiskanen, Harri; Virkajärvi, Ilkka; Viikari, Liisa.

In: Enzyme and Microbial Technology, Vol. 41, No. 3, 2007, p. 362-367.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - The effect of syngas composition on the growth and product formation of Butyribacterium methylotrophicum

AU - Heiskanen, Harri

AU - Virkajärvi, Ilkka

AU - Viikari, Liisa

PY - 2007

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AB - 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.

KW - Butyribacterium methylotrophicum

KW - Syngas

KW - Fermentation

KW - Liquid fuel

U2 - 10.1016/j.enzmictec.2007.03.004

DO - 10.1016/j.enzmictec.2007.03.004

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VL - 41

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JO - Enzyme and Microbial Technology

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