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Comparison of energy potentials from combined ethanol and methane production using steam-pretreated corn stover impregnated with acetic acid

Bondesson, Pia-Maria LU ; Galbe, Mats LU and Zacchi, Guido LU (2014) In Biomass & Bioenergy 67. p.413-424
Abstract
Acetic acid was investigated as a catalyst in steam pretreatment of corn stover. The purpose was to study ethanol production using either baker's yeast or a genetically modified pentose-fermenting version of Saccharomyces cerevisiae, KE6-12. Biogas production was investigated as an alternative for utilization of xylose. The high levels of acetic acid was found to be toxic using KE6-12. Some pentose fermentation was achieved, but the ethanol end concentration was almost the same as using baker's yeast (28 g L1 compared to 27 g L1). Using xylose for biogas production resulted in a high total energy recovery. The highest total energy recovery in the products, i.e. ethanol, methane and solids, obtained was 88% compared with the energy in... (More)
Acetic acid was investigated as a catalyst in steam pretreatment of corn stover. The purpose was to study ethanol production using either baker's yeast or a genetically modified pentose-fermenting version of Saccharomyces cerevisiae, KE6-12. Biogas production was investigated as an alternative for utilization of xylose. The high levels of acetic acid was found to be toxic using KE6-12. Some pentose fermentation was achieved, but the ethanol end concentration was almost the same as using baker's yeast (28 g L1 compared to 27 g L1). Using xylose for biogas production resulted in a high total energy recovery. The highest total energy recovery in the products, i.e. ethanol, methane and solids, obtained was 88% compared with the energy in ingoing raw material. This result was achieved when the solids and the liquid was separated after pretreatment. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Acetic acid, Ethanol, Methane, Steam pretreatment, Zea mays, Simultaneous saccharification and co-fermentation (SSCF)
in
Biomass & Bioenergy
volume
67
pages
413 - 424
publisher
Elsevier
external identifiers
  • wos:000340339700043
  • scopus:84904010538
ISSN
1873-2909
DOI
10.1016/j.biombioe.2014.05.025
language
English
LU publication?
yes
id
8b5713b4-f5eb-4df2-b54a-9feb021f83a2 (old id 4580551)
date added to LUP
2016-04-01 10:27:16
date last changed
2023-09-28 03:56:18
@article{8b5713b4-f5eb-4df2-b54a-9feb021f83a2,
  abstract     = {{Acetic acid was investigated as a catalyst in steam pretreatment of corn stover. The purpose was to study ethanol production using either baker's yeast or a genetically modified pentose-fermenting version of Saccharomyces cerevisiae, KE6-12. Biogas production was investigated as an alternative for utilization of xylose. The high levels of acetic acid was found to be toxic using KE6-12. Some pentose fermentation was achieved, but the ethanol end concentration was almost the same as using baker's yeast (28 g L1 compared to 27 g L1). Using xylose for biogas production resulted in a high total energy recovery. The highest total energy recovery in the products, i.e. ethanol, methane and solids, obtained was 88% compared with the energy in ingoing raw material. This result was achieved when the solids and the liquid was separated after pretreatment.}},
  author       = {{Bondesson, Pia-Maria and Galbe, Mats and Zacchi, Guido}},
  issn         = {{1873-2909}},
  keywords     = {{Acetic acid; Ethanol; Methane; Steam pretreatment; Zea mays; Simultaneous saccharification and co-fermentation (SSCF)}},
  language     = {{eng}},
  pages        = {{413--424}},
  publisher    = {{Elsevier}},
  series       = {{Biomass & Bioenergy}},
  title        = {{Comparison of energy potentials from combined ethanol and methane production using steam-pretreated corn stover impregnated with acetic acid}},
  url          = {{http://dx.doi.org/10.1016/j.biombioe.2014.05.025}},
  doi          = {{10.1016/j.biombioe.2014.05.025}},
  volume       = {{67}},
  year         = {{2014}},
}