Potential Feed Anaerobic Digestion Plant Feed Materials
At Anaerobic-Digestion.com we are often asked whether a particular organic waste is suitable feedstock for AD treatment. So we thought that we would devote a web page to providing a list of some of those we perceive to be the most common. Email us if you have more to add, and the list will grow.
Another question posed is what is the biogas yield which can be expected from agricultural wastes, and this is also answered below.
- Dairy Farm and piggery etc waste slurries
- Dairy Product and other Food Processing wastes
- Household Food Waste with or without Green Waste
- Brewing Industry effluents and wastes
- Supermarket Waste*
- Municipal Solid Waste from Kerbside collections of Green Waste
- Municipal Solid Waste from Kerbside collections of Green Waste and Kitchen Waste*
- Catering Industry Wastes*
- Organic Market Wastes*
- Sewage Treatment Works sludges
- Silage/ley crops (may be included and kept in storage to provide a feedstock for use to augment feed during winter seasons when the availability of other feed materials will be reduced)
- Other organic wastes available locally from other process industries.
* - When considering acceptance of some wastes, early thought should be given to the effects on the plant of Animal By-Products Regulations compliance, and necessary provision for handling and processing ABPR waste. ABPR applies to the EU states, but equivalent regulations should also be in force elsewhere to avoid cross contamination health risks (eg Foot and Mouth disease).
(We would like to make this list as comprehensive as possible. Please email us if you think you have another important waste that we have not listed.)
Biogas Yield and Energy of Common Agricultural Feedstocks (Livestock Farms) and Food Waste
The following is DEFRA data and is approximate only.
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Feedstock
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Number of animals to produce 1 tonne/day
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Dry Matter Content
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Biogas Yield(M3/t)
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Energy Value(MJ/m3) Biogas
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Cattle Slurry
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20-40
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12
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25
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23-25
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Pig Slurry
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250-300
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9
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26
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21-25
|
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Laying Hen Litter
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8,000-9,000
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30
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90-150
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23-27
|
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Broiler Manure
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10,000-15,000
|
60
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50-100
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21-23
|
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Food Waste
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~
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15
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46
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21-25
|
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Another source for parameters to calculate energy production and derivation of a system which uses “cattle” equivalent yields for the assessment of total potential farm production can be found in Appendix 3 of the report reference AEAT/ENV/R/2104, Assessment of Methane Management and Recovery Options for Livestock Manures and Slurries, December 2005. It appears that this DEFRA report should be available on their web site, however, a search on Google for the report reference took us to the downlaod of a .pdf but the .pdf that then downloaded was not the correct report! We suggest that this may have been corrected by the time you try.
Bio-energy Crop Yields
No data available currently, but is likely to be added soon.
If you are looking for biomass feedstocks for anaerobic digestion plants you can watch our video on the subject of “Biomass Energy Sources” here.
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