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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
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
2014-07-28 11:21:42
date last changed
2017-09-03 03:17:02
@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},
  keyword      = {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},
  volume       = {67},
  year         = {2014},
}