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Techno-Economic Evaluation of Bioethanol Production from Three Different Lignocellulosic Materials

Sassner, Per LU ; Galbe, Mats LU and Zacchi, Guido LU (2008) In Biomass & Bioenergy 32(5). p.422-430
Abstract
The lignocellulosic materials spruce (softwood), Salix (hardwood) and corn stover (agricultural residue) are all potential feedstock for ethanol production. In this study the utilization of these materials for bioethanol production was compared in terms of production cost and energy demand using a process concept based on SO2-catalysed steam pretreatment followed by simultaneous saccharification and fermentation (SSF). A model including all major process steps was implemented in the commercial flowsheeting program Aspen Plus, and the model input was based on data recently obtained on lab scale or in a process development unit.

The main focus of the study was on the pretreatment and the SSF steps. Sensitivity analyses of important... (More)
The lignocellulosic materials spruce (softwood), Salix (hardwood) and corn stover (agricultural residue) are all potential feedstock for ethanol production. In this study the utilization of these materials for bioethanol production was compared in terms of production cost and energy demand using a process concept based on SO2-catalysed steam pretreatment followed by simultaneous saccharification and fermentation (SSF). A model including all major process steps was implemented in the commercial flowsheeting program Aspen Plus, and the model input was based on data recently obtained on lab scale or in a process development unit.

The main focus of the study was on the pretreatment and the SSF steps. Sensitivity analyses of important process parameters showed their relative effects on the production cost and on the potential for cost reduction for each raw material. The study clearly demonstrates the importance of a high ethanol yield and the necessity of utilizing the pentose fraction for ethanol production to obtain good process economy, especially when using Salix or corn stover. Furthermore, a less energy-demanding process, here mainly achieved by increasing the dry matter content in SSF, reduces the capital cost and results in higher co-product credit, and therefore has a significant effect on the overall process economy. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Steam pretreatment, SSF, Economics, Bioethanol
in
Biomass & Bioenergy
volume
32
issue
5
pages
422 - 430
publisher
Elsevier
external identifiers
  • wos:000256654900005
  • scopus:43249092686
ISSN
1873-2909
DOI
10.1016/j.biombioe.2007.10.014
language
English
LU publication?
yes
id
7221e5d6-0b3b-431b-beef-6ea4770f11bb (old id 781902)
date added to LUP
2008-01-08 16:11:35
date last changed
2017-09-17 04:38:03
@article{7221e5d6-0b3b-431b-beef-6ea4770f11bb,
  abstract     = {The lignocellulosic materials spruce (softwood), Salix (hardwood) and corn stover (agricultural residue) are all potential feedstock for ethanol production. In this study the utilization of these materials for bioethanol production was compared in terms of production cost and energy demand using a process concept based on SO2-catalysed steam pretreatment followed by simultaneous saccharification and fermentation (SSF). A model including all major process steps was implemented in the commercial flowsheeting program Aspen Plus, and the model input was based on data recently obtained on lab scale or in a process development unit.<br/><br>
The main focus of the study was on the pretreatment and the SSF steps. Sensitivity analyses of important process parameters showed their relative effects on the production cost and on the potential for cost reduction for each raw material. The study clearly demonstrates the importance of a high ethanol yield and the necessity of utilizing the pentose fraction for ethanol production to obtain good process economy, especially when using Salix or corn stover. Furthermore, a less energy-demanding process, here mainly achieved by increasing the dry matter content in SSF, reduces the capital cost and results in higher co-product credit, and therefore has a significant effect on the overall process economy.},
  author       = {Sassner, Per and Galbe, Mats and Zacchi, Guido},
  issn         = {1873-2909},
  keyword      = {Steam pretreatment,SSF,Economics,Bioethanol},
  language     = {eng},
  number       = {5},
  pages        = {422--430},
  publisher    = {Elsevier},
  series       = {Biomass & Bioenergy},
  title        = {Techno-Economic Evaluation of Bioethanol Production from Three Different Lignocellulosic Materials},
  url          = {http://dx.doi.org/10.1016/j.biombioe.2007.10.014},
  volume       = {32},
  year         = {2008},
}