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Low temperature anaerobic digestion of mixtures of llama, cow and sheep manure for improved methane production

Alvarez, Rene LU and Lidén, Gunnar LU (2009) In Biomass & Bioenergy 33(3). p.527-533
Abstract
Biogas production in anaerobic digestion in farm-scale units is typically performed under mesophilic conditions when used for producing domestic fuel and stabilizing animal waste for the use of digested manure as a fertilizer. Previous studies on the digestion of llama and cow manure have shown the feasibility of producing biogas under altiplano conditions (low pressure and low temperature) and of llama manure as a promising feedstock. The present study concerns the utilization of various mixtures of feedstocks from the Bolivian altiplano under low temperature conditions (18-25 degrees C). Laboratory scale experiments were performed on the digestion of mixtures of llama, sheep and cow manure in a semi-continuous process using ten 2-L... (More)
Biogas production in anaerobic digestion in farm-scale units is typically performed under mesophilic conditions when used for producing domestic fuel and stabilizing animal waste for the use of digested manure as a fertilizer. Previous studies on the digestion of llama and cow manure have shown the feasibility of producing biogas under altiplano conditions (low pressure and low temperature) and of llama manure as a promising feedstock. The present study concerns the utilization of various mixtures of feedstocks from the Bolivian altiplano under low temperature conditions (18-25 degrees C). Laboratory scale experiments were performed on the digestion of mixtures of llama, sheep and cow manure in a semi-continuous process using ten 2-L stainless steel digesters to determine the effects of organic loading rate (OLR) and the feed composition. The semi-continuous operation of mixture of llama-cow-sheep manure proved to be a reliable system, which could be operated with good stability. The results suggest that in a system digesting a mixture of llama-cow-sheep manure at low temperature (18-25 degrees C) the maximum OLR value is between 4 and 6 kg VS m(3) d(-1). The methane yields obtained in the mixture experiments were in the range 0.07-0.14 m(3) kg(-1) VS added, with a methane concentration in the gas of between 47 and 55%. (C) 2008 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Biomethanation, Anaerobic digestion, Biogas, Manure, Low temperature
in
Biomass & Bioenergy
volume
33
issue
3
pages
527 - 533
publisher
Elsevier
external identifiers
  • wos:000264433600021
  • scopus:63749106350
ISSN
1873-2909
DOI
10.1016/j.biombioe.2008.08.012
language
English
LU publication?
yes
id
3b1a5483-ae40-4c9a-a047-3077c698b11d (old id 1401941)
date added to LUP
2009-06-03 14:30:02
date last changed
2017-11-12 03:28:36
@article{3b1a5483-ae40-4c9a-a047-3077c698b11d,
  abstract     = {Biogas production in anaerobic digestion in farm-scale units is typically performed under mesophilic conditions when used for producing domestic fuel and stabilizing animal waste for the use of digested manure as a fertilizer. Previous studies on the digestion of llama and cow manure have shown the feasibility of producing biogas under altiplano conditions (low pressure and low temperature) and of llama manure as a promising feedstock. The present study concerns the utilization of various mixtures of feedstocks from the Bolivian altiplano under low temperature conditions (18-25 degrees C). Laboratory scale experiments were performed on the digestion of mixtures of llama, sheep and cow manure in a semi-continuous process using ten 2-L stainless steel digesters to determine the effects of organic loading rate (OLR) and the feed composition. The semi-continuous operation of mixture of llama-cow-sheep manure proved to be a reliable system, which could be operated with good stability. The results suggest that in a system digesting a mixture of llama-cow-sheep manure at low temperature (18-25 degrees C) the maximum OLR value is between 4 and 6 kg VS m(3) d(-1). The methane yields obtained in the mixture experiments were in the range 0.07-0.14 m(3) kg(-1) VS added, with a methane concentration in the gas of between 47 and 55%. (C) 2008 Elsevier Ltd. All rights reserved.},
  author       = {Alvarez, Rene and Lidén, Gunnar},
  issn         = {1873-2909},
  keyword      = {Biomethanation,Anaerobic digestion,Biogas,Manure,Low temperature},
  language     = {eng},
  number       = {3},
  pages        = {527--533},
  publisher    = {Elsevier},
  series       = {Biomass & Bioenergy},
  title        = {Low temperature anaerobic digestion of mixtures of llama, cow and sheep manure for improved methane production},
  url          = {http://dx.doi.org/10.1016/j.biombioe.2008.08.012},
  volume       = {33},
  year         = {2009},
}