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Production of ethanol from dilute glucose solutions - A technical-economic evaluation of various refining alternatives

Larsson, M and Zacchi, Guido LU (1996) In Bioprocess Engineering 15(3). p.125-132
Abstract
In order for ethanol to be competitive with gasoline, the production cost of ethanol must be lower than it is today. One economically crucial step in the production of ethanol from lignocellulosics is refining, since hydrolysis yields dilute glucose solutions which, after fermentation, result in a dilute ethanol solution, 2-3 wt-% ethanol. A technical-economic investigation of various energy-saving alternatives to conventional distillation has been performed. The energy-saving techniques investigated were: multi-column distillation, distillation with mechanical vapour recompression, distillation with an absorption heat transformer, phase separation with potassium carbonate and extraction of ethanol from the fermentation broth with Aldol... (More)
In order for ethanol to be competitive with gasoline, the production cost of ethanol must be lower than it is today. One economically crucial step in the production of ethanol from lignocellulosics is refining, since hydrolysis yields dilute glucose solutions which, after fermentation, result in a dilute ethanol solution, 2-3 wt-% ethanol. A technical-economic investigation of various energy-saving alternatives to conventional distillation has been performed. The energy-saving techniques investigated were: multi-column distillation, distillation with mechanical vapour recompression, distillation with an absorption heat transformer, phase separation with potassium carbonate and extraction of ethanol from the fermentation broth with Aldol 85. The most economical refining step for the production of ethanol from a dilute glucose solution, around 5 wt-%, was found to be multi-column distillation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Bioprocess Engineering
volume
15
issue
3
pages
125 - 132
publisher
Springer
external identifiers
  • wos:A1996VC22700002
  • scopus:0029763460
ISSN
1432-0797
DOI
10.1007/s004490050245
language
English
LU publication?
yes
id
29ef5075-bbbd-44b2-b958-6e41f16becdd (old id 3911521)
date added to LUP
2013-06-28 13:35:02
date last changed
2017-04-30 07:05:48
@article{29ef5075-bbbd-44b2-b958-6e41f16becdd,
  abstract     = {In order for ethanol to be competitive with gasoline, the production cost of ethanol must be lower than it is today. One economically crucial step in the production of ethanol from lignocellulosics is refining, since hydrolysis yields dilute glucose solutions which, after fermentation, result in a dilute ethanol solution, 2-3 wt-% ethanol. A technical-economic investigation of various energy-saving alternatives to conventional distillation has been performed. The energy-saving techniques investigated were: multi-column distillation, distillation with mechanical vapour recompression, distillation with an absorption heat transformer, phase separation with potassium carbonate and extraction of ethanol from the fermentation broth with Aldol 85. The most economical refining step for the production of ethanol from a dilute glucose solution, around 5 wt-%, was found to be multi-column distillation.},
  author       = {Larsson, M and Zacchi, Guido},
  issn         = {1432-0797},
  language     = {eng},
  number       = {3},
  pages        = {125--132},
  publisher    = {Springer},
  series       = {Bioprocess Engineering},
  title        = {Production of ethanol from dilute glucose solutions - A technical-economic evaluation of various refining alternatives},
  url          = {http://dx.doi.org/10.1007/s004490050245},
  volume       = {15},
  year         = {1996},
}