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Feasibility of grass co-digestion in an agricultural digester, influence on process parameters and residue composition

Sofie De Moor, Filip Velghe, Isabella Wierinck, Evi Michels UGent, Bart Ryckaert, Alain De Vocht, Willy Verbeke and Erik Meers UGent (2013) AOG RENEW meeting, Abstracts.
abstract
The European Union states that by 2020, 20% of the European energy consumption should come from renewable energy. This study investigated the potential of co-digestion of grass clippings (waste) in a typical Flemish agro-digester characterized by an input of 30% manure, 30% maize silage and 40% side streams. No significant adverse effects in the microbiological functioning of the reactors were detected when 10 to 20% out of the 30% maize input was replaced by grass. However at the highest dosage of grass input, dry matter content and the viscosity of the reactor content increases substantially. These elevated parameters could subsequently be reduced again by enzyme addition in the form of MethaPlus L100, although they remained higher than those of the reference reactor receiving maize. It can be concluded that co-digestion of 20% grass in a typical agricultural digester would not pose any problem if dry matter content and viscosity are improved by the use of an enzyme mixture. This is good news for a region like Flanders, where arable land for (energy) crop production is scarce and where grass wastes remain in many cases unused.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
keyword
grass clippings, Anaerobic digestion, semi-continuous system, agro-digester, mesophilic co-digestion
in
AOG RENEW meeting, Abstracts
conference name
AOG RENEW meeting
conference location
Kortrijk, Belgium
conference start
2013-06-13
conference end
2013-06-13
project
Graskracht, GR3
language
English
UGent publication?
yes
classification
C3
additional info
uploaded document is poster version
copyright statement
I have retained and own the full copyright for this publication
id
4082963
handle
http://hdl.handle.net/1854/LU-4082963
date created
2013-06-24 09:10:14
date last changed
2016-12-19 15:34:53
@inproceedings{4082963,
  abstract     = {The European Union states that by 2020, 20\% of the European energy consumption should come from renewable energy. This study investigated the potential of co-digestion of grass clippings (waste) in a typical Flemish agro-digester characterized by an input of 30\% manure, 30\% maize silage and 40\% side streams. No significant adverse effects in the microbiological functioning of the reactors were detected when 10 to 20\% out of the 30\% maize input was replaced by grass. However at the highest dosage of grass input, dry matter content and the viscosity of the reactor content increases substantially. These elevated parameters could subsequently be reduced again by enzyme addition in the form of MethaPlus L100, although they remained higher than those of the reference reactor receiving maize. It can be concluded that co-digestion of 20\% grass in a typical agricultural digester would not pose any problem if dry matter content and viscosity are improved by the use of an enzyme mixture. This is good news for a region like Flanders, where arable land for (energy) crop production is scarce and where grass wastes remain in many cases unused.},
  author       = {De Moor, Sofie and Velghe, Filip and Wierinck, Isabella and Michels, Evi and Ryckaert, Bart and De Vocht, Alain and Verbeke, Willy and Meers, Erik},
  booktitle    = {AOG RENEW meeting, Abstracts},
  keyword      = {grass clippings,Anaerobic digestion,semi-continuous system,agro-digester,mesophilic co-digestion},
  language     = {eng},
  location     = {Kortrijk, Belgium},
  title        = {Feasibility of grass co-digestion in an agricultural digester, influence on process parameters and residue composition},
  year         = {2013},
}

Chicago
De Moor, Sofie, Filip Velghe, Isabella Wierinck, Evi Michels, Bart Ryckaert, Alain De Vocht, Willy Verbeke, and Erik Meers. 2013. “Feasibility of Grass Co-digestion in an Agricultural Digester, Influence on Process Parameters and Residue Composition.” In AOG RENEW Meeting, Abstracts.
APA
De Moor, Sofie, Velghe, F., Wierinck, I., Michels, E., Ryckaert, B., De Vocht, A., Verbeke, W., et al. (2013). Feasibility of grass co-digestion in an agricultural digester, influence on process parameters and residue composition. AOG RENEW meeting, Abstracts. Presented at the AOG RENEW meeting.
Vancouver
1.
De Moor S, Velghe F, Wierinck I, Michels E, Ryckaert B, De Vocht A, et al. Feasibility of grass co-digestion in an agricultural digester, influence on process parameters and residue composition. AOG RENEW meeting, Abstracts. 2013.
MLA
De Moor, Sofie, Filip Velghe, Isabella Wierinck, et al. “Feasibility of Grass Co-digestion in an Agricultural Digester, Influence on Process Parameters and Residue Composition.” AOG RENEW Meeting, Abstracts. 2013. Print.