Advanced

Bioconversion of industrial hemp to ethanol and methane: The benefits of steam pretreatment and co-production

Kreuger, Emma LU ; Sipos, Balint; Zacchi, Guido LU ; Svensson, Sven-Erik and Björnsson, Lovisa LU (2011) In Bioresource Technology 102(3). p.3457-3465
Abstract
Several scenarios for ethanol production, methane production (by anaerobic digestion) and co-production of these, using autumn harvested hemp as substrate, were investigated and compared in terms of gross energy output. Steam pretreatment improved the methane production rate compared with mechanical grinding. The methane yield of steam pretreated stems was similar both with and without pre-hydrolysis with cellulolytic enzymes. Co-production of ethanol and methane from steam pretreated stems gave a high yield of transportation fuel, 11.1-11.7 MJ/kg processed stem dry matter (DM); more than twice that of ethanol production alone from hexoses, 4.4-5.1 MJ/kg processed stem DM. Co-production from the whole hemp plant would give 2600-3000 L... (More)
Several scenarios for ethanol production, methane production (by anaerobic digestion) and co-production of these, using autumn harvested hemp as substrate, were investigated and compared in terms of gross energy output. Steam pretreatment improved the methane production rate compared with mechanical grinding. The methane yield of steam pretreated stems was similar both with and without pre-hydrolysis with cellulolytic enzymes. Co-production of ethanol and methane from steam pretreated stems gave a high yield of transportation fuel, 11.1-11.7 MJ/kg processed stem dry matter (DM); more than twice that of ethanol production alone from hexoses, 4.4-5.1 MJ/kg processed stem DM. Co-production from the whole hemp plant would give 2600-3000 L ethanol and 2800-2900 m(3) methane, in total 171-180 GJ per 10,000 m(2) of agricultural land, based on a biomass yield of 16 Mg DM. Of this, the yeast and enzymes from ethanol production were estimated to contribute 700 m(3) (27 GJ) of methane. (C) 2010 Elsevier Ltd. All rights reserved. (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
Biofuel, Biogas, Lignocellulose, Energy crops, Cannabis sativa L.
in
Bioresource Technology
volume
102
issue
3
pages
3457 - 3465
publisher
Elsevier
external identifiers
  • wos:000286904500186
  • scopus:78650827300
ISSN
1873-2976
DOI
10.1016/j.biortech.2010.10.126
language
English
LU publication?
yes
id
3529f743-6025-40f0-92fb-4ed1afd31e25 (old id 1870015)
date added to LUP
2011-04-06 10:36:28
date last changed
2017-10-22 04:23:52
@article{3529f743-6025-40f0-92fb-4ed1afd31e25,
  abstract     = {Several scenarios for ethanol production, methane production (by anaerobic digestion) and co-production of these, using autumn harvested hemp as substrate, were investigated and compared in terms of gross energy output. Steam pretreatment improved the methane production rate compared with mechanical grinding. The methane yield of steam pretreated stems was similar both with and without pre-hydrolysis with cellulolytic enzymes. Co-production of ethanol and methane from steam pretreated stems gave a high yield of transportation fuel, 11.1-11.7 MJ/kg processed stem dry matter (DM); more than twice that of ethanol production alone from hexoses, 4.4-5.1 MJ/kg processed stem DM. Co-production from the whole hemp plant would give 2600-3000 L ethanol and 2800-2900 m(3) methane, in total 171-180 GJ per 10,000 m(2) of agricultural land, based on a biomass yield of 16 Mg DM. Of this, the yeast and enzymes from ethanol production were estimated to contribute 700 m(3) (27 GJ) of methane. (C) 2010 Elsevier Ltd. All rights reserved.},
  author       = {Kreuger, Emma and Sipos, Balint and Zacchi, Guido and Svensson, Sven-Erik and Björnsson, Lovisa},
  issn         = {1873-2976},
  keyword      = {Biofuel,Biogas,Lignocellulose,Energy crops,Cannabis sativa L.},
  language     = {eng},
  number       = {3},
  pages        = {3457--3465},
  publisher    = {Elsevier},
  series       = {Bioresource Technology},
  title        = {Bioconversion of industrial hemp to ethanol and methane: The benefits of steam pretreatment and co-production},
  url          = {http://dx.doi.org/10.1016/j.biortech.2010.10.126},
  volume       = {102},
  year         = {2011},
}