Showcase 2021

25-27 de novembro de 2021 | Marina da Glória - Rio de Janeiro, RJ



Small-Scale Liquid Manure Plants for Intelligent Energy Supply in Rural Areas


The aim of the project is to develop a standard small-scale biogas plant for the fermentation of manure at farms with about 150 livestock units or more.


  • Basic technical planning (basic engineering) of a small-scale liquid manure plant based on the University of Hohenheim’s two-stage concept for the pasteurization of liquid manure (separation into a stirred-tank reactor and fixed-bed reactor with the return of non-degraded fibrous materials to the first stage).
  • Determination of the technical liquid manure potential in Germany.
  • Economic analysis of the planned small-scale liquid manure plant.
  • Ecological analysis and determination of the greenhouse gas reduction potential.
  • Selection of a suitable farm as the pilot plant.

Status Quo

There are currently many farms with too few animals to operate large biogas plants with liquid manure alone and no concepts for economically viable small-scale biogas plants. That is one of the reasons why only about one third of the manure produced in Germany is currently being used in biogas plants. As a result, considerable potential for energy generation and climate protection remains untapped, while the unfermented raw manure also causes odour and ammonia emissions, as well as water pollution.


  • The University of Hohenheim’s two-stage pasteurization process is characterized by a higher degree of degradation and the possibility of flexible plant operation, allowing for the decentralized and needs-based generation of electricity and heat.
  • Development of unused resource potential.
  • Reduction of greenhouse gas emissions.
  • Mitigation of the negative effects of spreading raw liquid manure (water pollution, emissions, odour).

Project Information

The project, “De-Methanation of Liquid Manure – Intelligent Energy Supply in Rural Areas through Flexible Energy Supply with Small-Scale Liquid Manure Systems” (funding code 2219NR130, 2219NR446 und 2219NR458), is being implemented by the following partners:

  • Landesanstalt für Agrartechnik und Bioenergie an der Universität Hohenheim, Stuttgart
  • renergie Allgäu e.V., Kempten
  • Hochland Natec GmbH, Heimenkirch

Duration: September 2020 – August 2021

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