Energy production from agricultural residues: high methane yields in pilot scale two-stage anaerobic digestion
(2008) In Biomass & Bioenergy 32(1). p.44-50- Abstract
- There is a large, unutilised energy potential in agricultural waste fractions. In this pilotscale
study, the efficiency of a simple two-stage anaerobic digestion process was
investigated for stabilisation and biomethanation of solid potato waste and sugar beet
leaves, both separately and in co-digestion. A good phase separation between hydrolysis/
acidification and methanogenesis was achieved, as indicated by the high carbon dioxide
production, high volatile fatty acid concentration and low pH in the acidogenic reactors.
Digestion of the individual substrates gave gross energy yields of 2.1–3.4 kWh/kg VS in the
form of methane. Co-digestion, however, gave up to 60% higher... (More) - There is a large, unutilised energy potential in agricultural waste fractions. In this pilotscale
study, the efficiency of a simple two-stage anaerobic digestion process was
investigated for stabilisation and biomethanation of solid potato waste and sugar beet
leaves, both separately and in co-digestion. A good phase separation between hydrolysis/
acidification and methanogenesis was achieved, as indicated by the high carbon dioxide
production, high volatile fatty acid concentration and low pH in the acidogenic reactors.
Digestion of the individual substrates gave gross energy yields of 2.1–3.4 kWh/kg VS in the
form of methane. Co-digestion, however, gave up to 60% higher methane yield, indicating
that co-digestion resulted in improved methane production due to the positive synergism
established in the digestion liquor. The integrity of the methane filters (MFs) was
maintained throughout the period of operation, producing biogas with 60–78% methane
content. A stable effluent pH showed that the methanogenic reactors had good ability to
withstand the variations in load and volatile fatty acid concentrations that occurred in the
two-stage process. The results of this pilot-scale study show that the two-stage anaerobic
digestion system is suitable for effective conversion of semi-solid agricultural residues as
potato waste and sugar beet leaves. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/817802
- author
- Parawira, Wilson LU ; Read, John S ; Mattiasson, Bo LU and Björnsson, Lovisa LU
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Anaerobic digestion Two-stage Pilot scale Potato Sugar beet leaves Co-digestion
- in
- Biomass & Bioenergy
- volume
- 32
- issue
- 1
- pages
- 44 - 50
- publisher
- Elsevier
- external identifiers
-
- wos:000253276300007
- scopus:37249021300
- ISSN
- 1873-2909
- DOI
- 10.1016/j.biombioe.2007.06.003
- language
- English
- LU publication?
- yes
- id
- 10932ed0-95dc-4999-a4e9-e83b2e24354a (old id 817802)
- date added to LUP
- 2016-04-01 12:05:32
- date last changed
- 2022-03-20 23:17:29
@article{10932ed0-95dc-4999-a4e9-e83b2e24354a,
abstract = {{There is a large, unutilised energy potential in agricultural waste fractions. In this pilotscale<br/><br>
study, the efficiency of a simple two-stage anaerobic digestion process was<br/><br>
investigated for stabilisation and biomethanation of solid potato waste and sugar beet<br/><br>
leaves, both separately and in co-digestion. A good phase separation between hydrolysis/<br/><br>
acidification and methanogenesis was achieved, as indicated by the high carbon dioxide<br/><br>
production, high volatile fatty acid concentration and low pH in the acidogenic reactors.<br/><br>
Digestion of the individual substrates gave gross energy yields of 2.1–3.4 kWh/kg VS in the<br/><br>
form of methane. Co-digestion, however, gave up to 60% higher methane yield, indicating<br/><br>
that co-digestion resulted in improved methane production due to the positive synergism<br/><br>
established in the digestion liquor. The integrity of the methane filters (MFs) was<br/><br>
maintained throughout the period of operation, producing biogas with 60–78% methane<br/><br>
content. A stable effluent pH showed that the methanogenic reactors had good ability to<br/><br>
withstand the variations in load and volatile fatty acid concentrations that occurred in the<br/><br>
two-stage process. The results of this pilot-scale study show that the two-stage anaerobic<br/><br>
digestion system is suitable for effective conversion of semi-solid agricultural residues as<br/><br>
potato waste and sugar beet leaves.}},
author = {{Parawira, Wilson and Read, John S and Mattiasson, Bo and Björnsson, Lovisa}},
issn = {{1873-2909}},
keywords = {{Anaerobic digestion
Two-stage
Pilot scale
Potato
Sugar beet leaves
Co-digestion}},
language = {{eng}},
number = {{1}},
pages = {{44--50}},
publisher = {{Elsevier}},
series = {{Biomass & Bioenergy}},
title = {{Energy production from agricultural residues: high methane yields in pilot scale two-stage anaerobic digestion}},
url = {{http://dx.doi.org/10.1016/j.biombioe.2007.06.003}},
doi = {{10.1016/j.biombioe.2007.06.003}},
volume = {{32}},
year = {{2008}},
}