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Fuel ethanol production from steam-pretreated corn stover using SSF at higher dry matter content

Öhgren, Karin LU ; Rudolf, Andreas LU ; Galbe, Mats LU and Zacchi, Guido LU (2006) In BIOMASS & BIOENERGY 30(10). p.863-869
Abstract
Replacing fossil fuels by bio-fuels has many advantages, such as the reduction of CO2-emission to the atmosphere, the possibility for non-oil-producing countries to be self-sufficient in fuel, and increased local job opportunities. Bio-ethanol is such a promising renewable fuel. However, today it is produced from sugar or starch-raw materials that are relatively expensive. To lower the production cost of bio-ethanol the cost of the raw material must be reduced and the production process made more efficient. The production of bio-ethanol from corn stover using simultaneous saccharification and fermentation (SSF) at high dry matter content addresses both issues. Corn stover is an agricultural by-product and thus has a low economic value. SSF... (More)
Replacing fossil fuels by bio-fuels has many advantages, such as the reduction of CO2-emission to the atmosphere, the possibility for non-oil-producing countries to be self-sufficient in fuel, and increased local job opportunities. Bio-ethanol is such a promising renewable fuel. However, today it is produced from sugar or starch-raw materials that are relatively expensive. To lower the production cost of bio-ethanol the cost of the raw material must be reduced and the production process made more efficient. The production of bio-ethanol from corn stover using simultaneous saccharification and fermentation (SSF) at high dry matter content addresses both issues. Corn stover is an agricultural by-product and thus has a low economic value. SSF at high dry matter content results in a high ethanol concentration in the fermented slurry, thereby decreasing the energy demand in the subsequent distillation step. In this study, SSF was performed on steam-pretreated corn stover at 5, 7.5 and 10% water-insoluble solids (WIS) with 2g/L hexosefermenting Saccharomyces cerevisiae (ordinary compressed baker's yeast). SSF at 10% WIS resulted in an ethanol yield of 74% based on the glucose content in the raw material and an ethanol concentration of 25 g/L. Neither higher yeast concentration (5 g/L) nor yeast cultivated on the liquid after the pretreatment resulted, under these conditions, in a higher overall ethanol yield. (c) 2006 Elsevier Ltd. All rights reserved. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ethanol, concentration, corn stover, SO2, ethanol production, steam pretreatment, SSF
in
BIOMASS & BIOENERGY
volume
30
issue
10
pages
863 - 869
publisher
Elsevier
external identifiers
  • wos:000241067500006
  • scopus:33748913909
ISSN
1873-2909
DOI
10.1016/j.biombioe.2006.02.002
language
English
LU publication?
yes
id
a9162754-c1c9-47da-b35e-15ab2d5c316c (old id 388578)
date added to LUP
2016-04-01 12:20:16
date last changed
2020-11-16 02:49:25
@article{a9162754-c1c9-47da-b35e-15ab2d5c316c,
  abstract     = {Replacing fossil fuels by bio-fuels has many advantages, such as the reduction of CO2-emission to the atmosphere, the possibility for non-oil-producing countries to be self-sufficient in fuel, and increased local job opportunities. Bio-ethanol is such a promising renewable fuel. However, today it is produced from sugar or starch-raw materials that are relatively expensive. To lower the production cost of bio-ethanol the cost of the raw material must be reduced and the production process made more efficient. The production of bio-ethanol from corn stover using simultaneous saccharification and fermentation (SSF) at high dry matter content addresses both issues. Corn stover is an agricultural by-product and thus has a low economic value. SSF at high dry matter content results in a high ethanol concentration in the fermented slurry, thereby decreasing the energy demand in the subsequent distillation step. In this study, SSF was performed on steam-pretreated corn stover at 5, 7.5 and 10% water-insoluble solids (WIS) with 2g/L hexosefermenting Saccharomyces cerevisiae (ordinary compressed baker's yeast). SSF at 10% WIS resulted in an ethanol yield of 74% based on the glucose content in the raw material and an ethanol concentration of 25 g/L. Neither higher yeast concentration (5 g/L) nor yeast cultivated on the liquid after the pretreatment resulted, under these conditions, in a higher overall ethanol yield. (c) 2006 Elsevier Ltd. All rights reserved.},
  author       = {Öhgren, Karin and Rudolf, Andreas and Galbe, Mats and Zacchi, Guido},
  issn         = {1873-2909},
  language     = {eng},
  number       = {10},
  pages        = {863--869},
  publisher    = {Elsevier},
  series       = {BIOMASS & BIOENERGY},
  title        = {Fuel ethanol production from steam-pretreated corn stover using SSF at higher dry matter content},
  url          = {http://dx.doi.org/10.1016/j.biombioe.2006.02.002},
  doi          = {10.1016/j.biombioe.2006.02.002},
  volume       = {30},
  year         = {2006},
}