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Combined production of bioethanol and biogas from peels of wild cassava Manihot glaziovii

Moshi, Anselm LU ; Temu, Stella LU ; Ivo Achu, Nges LU ; Mamo, Gashaw LU ; Hosea, Ken M. M.; Elisante, Emrode and Mattiasson, Bo LU (2015) In Chemical Engineering Journal 279. p.297-306
Abstract
Cassava peels were pre-treated with alkali, enzyme and in sequential combination of alkali and enzyme, and used for production of bioethanol or biogas, or both (in sequence, bioethanol followed by biogas). The Biogas Endeavour and Automatic Methane Potential Test Systems were used for production of bioethanol and biogas, respectively. The bioethanol yield and volumetric productivity achieved with alkali pre-treatment combined in sequence with enzyme pre-treatment were 1.9 mol/mol and 1.3 g/L/h which was higher than the yield (1.6 mol/mol) and volumetric productivity (0.5 g/L/h) obtained from only enzyme pre-treated peels. Alkali combined in sequence with enzyme was proven to be the best treatment showing a 56% improvement in methane yield... (More)
Cassava peels were pre-treated with alkali, enzyme and in sequential combination of alkali and enzyme, and used for production of bioethanol or biogas, or both (in sequence, bioethanol followed by biogas). The Biogas Endeavour and Automatic Methane Potential Test Systems were used for production of bioethanol and biogas, respectively. The bioethanol yield and volumetric productivity achieved with alkali pre-treatment combined in sequence with enzyme pre-treatment were 1.9 mol/mol and 1.3 g/L/h which was higher than the yield (1.6 mol/mol) and volumetric productivity (0.5 g/L/h) obtained from only enzyme pre-treated peels. Alkali combined in sequence with enzyme was proven to be the best treatment showing a 56% improvement in methane yield compared to the yield from untreated sample. Combined ethanol and methane production resulted in 1.2-1.3-fold fuel energy yield compared to only methane and 3-4-fold compared to only ethanol production. This study therefore provides practical data on the scenario best suited for the harnessing of energy from cassava peels. (C) 2015 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bioenergy, glaziovii, Manihot, Gas Endeavour System, Bioethanol, Anaerobic digestion
in
Chemical Engineering Journal
volume
279
pages
297 - 306
publisher
Elsevier
external identifiers
  • wos:000359873500034
  • scopus:84929623175
ISSN
1385-8947
DOI
10.1016/j.cej.2015.05.006
language
English
LU publication?
yes
id
7ee67bad-88d8-435e-9585-3680b50f8563 (old id 7969235)
date added to LUP
2015-09-23 07:48:47
date last changed
2017-10-08 03:44:58
@article{7ee67bad-88d8-435e-9585-3680b50f8563,
  abstract     = {Cassava peels were pre-treated with alkali, enzyme and in sequential combination of alkali and enzyme, and used for production of bioethanol or biogas, or both (in sequence, bioethanol followed by biogas). The Biogas Endeavour and Automatic Methane Potential Test Systems were used for production of bioethanol and biogas, respectively. The bioethanol yield and volumetric productivity achieved with alkali pre-treatment combined in sequence with enzyme pre-treatment were 1.9 mol/mol and 1.3 g/L/h which was higher than the yield (1.6 mol/mol) and volumetric productivity (0.5 g/L/h) obtained from only enzyme pre-treated peels. Alkali combined in sequence with enzyme was proven to be the best treatment showing a 56% improvement in methane yield compared to the yield from untreated sample. Combined ethanol and methane production resulted in 1.2-1.3-fold fuel energy yield compared to only methane and 3-4-fold compared to only ethanol production. This study therefore provides practical data on the scenario best suited for the harnessing of energy from cassava peels. (C) 2015 Elsevier B.V. All rights reserved.},
  author       = {Moshi, Anselm and Temu, Stella and Ivo Achu, Nges and Mamo, Gashaw and Hosea, Ken M. M. and Elisante, Emrode and Mattiasson, Bo},
  issn         = {1385-8947},
  keyword      = {Bioenergy,glaziovii,Manihot,Gas Endeavour System,Bioethanol,Anaerobic digestion},
  language     = {eng},
  pages        = {297--306},
  publisher    = {Elsevier},
  series       = {Chemical Engineering Journal},
  title        = {Combined production of bioethanol and biogas from peels of wild cassava Manihot glaziovii},
  url          = {http://dx.doi.org/10.1016/j.cej.2015.05.006},
  volume       = {279},
  year         = {2015},
}