Biogas Production from

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International Biogas and Bioenergy Centre of
Competence
Biogas Production from Agricultural Feedstock and
Energy Crops
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Biogaspotential in Germany according to origin of
sustrates
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(No Transcript)
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Bioenergy System with Liquid and Solid Feeding
Feeding in gas grid
Vehicle fuel
f e r m e n t a t i o n
Agricultural residues (manure, slurry)
Biogas upgrading
Cooking Lighting Cooling Heating
Biogas cleaning
Biogas utilisation
Direct burning
Energy crops, grass from Landscape maintenance
(grass, maize, beets)
Cogeneration
Electrical energy
Thermal energy
Transport
Storage
Separation
Spreading
liquid components back to the fermentation or
spreading
solid components become compost
Gardening
Agriculture
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Solid Biomass Charging
examples
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Biomass Batch Feeding in Dry Fermentation
garage typ digester (BEKON, 2004)
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Liquid Biomass Feeding
Ligavator Biomass storage
Lipp Digestor

• Feedstock
• cabbage
• potatoes
• beets
• grain
• maize

lactic acid Preservation at pH4
continuous liquid feeding
substrate preperation with up to 20 - 30 water
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Proposed Tariffs for Biogas in Germany EEG -
Law Overview Compensation of Electricity from
Biomass (in Cent/kWh)
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• Statements for Development
• The size of biogas plants is increasing to bigger
  dimensions
• At first biogas plants were installed for
  improvement of fertilizer
• Nowadays investors are more profit orientated
• Availabiliy of feedstocks for the biogas plant is
  an essential criterion

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• Statements for Development
• Research on energy crops and their gas yields
  since 1993 and the use in biogas plants since
  1998.
• The technology developments are mainly taking
  place in the digester and at the intake
  technology of solid and liquid energy crops
• Liquid manure and waste is a cheap substrate and
  stabilizer during the fermentation
• Legal, political and economical frame conditions
  necessary
• Regional market with substrates, energy biogas,
  electricity, heat, fertilizer.

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Thanks for your attention