Orbit - Optimization of a trickle-bed-bioreactor for dynamic microbial biosynthesis of methane with archaea in power-to-gas plants

Third Party Funds Group - Sub project

Overall project details

Overall project: Optimization of a trickle-bed-bioreactor for dynamic microbial biosynthesis of methane with archaea in power-to-gas plants

Project Details

Project leader:
Prof. Dr.-Ing. Jürgen Karl

Project members:
Tobias Weidlich

Contributing FAU Organisations:
Lehrstuhl für Energieverfahrenstechnik

Funding source: Bundesministerium für Wirtschaft und Technologie (BMWi)
Acronym: Orbit
Start date: 01/07/2017
End date: 30/06/2020

Research Fields

Second Generation Fuels & Fuell Cells
Lehrstuhl für Energieverfahrenstechnik

Abstract (technical / expert description):

Electricity generation from renewable sources is an important part of the energy transition and the climate protection. However with the generation of green electricity the challenge of increasing storage capacities arises. A possible way for storage is storing the electricity in form of hydrogen by use of electrolysis (power-to-gas) with upgrading it to methane which can be fed into the natural gas network. Through this the entire natural gas infrastructure can be used to store the “green methane”. ORBIT observes the whole process chain of storage with the focus on methanation. This is done via the innovative concept of the biological methanation.

The biological methanation works with the help of microorganisms, so-called archaea. The archaea produce methane as a metabolic product via the methanogenesis. They live in a fluid phase at moderate conditions (T=30-110°C) and pressures from 1 bar under anaerobic conditions. Therefore the reactor has to be oxygen-free and the reactants hydrogen and carbon dioxide have to be brought into solution. In particular the solution of the gases hydrogen and carbon dioxide is the limiting factor of the biological methanation, which is why a trickle-bed reactor is built in the project ORBIT.

For that reason a 50-liter trickle bed reactor is specially designed and built for the requirements and in holistic view between biology, process engineering and plant construction. This will be tested and optimized hydrodynamically and operated with special selected microorganism strains. First as a research reactor and in the final phase at real operation for test purposes at the power-to-gas location Ibbenbüren.

External Partners

Ostbayerische Technische Hochschule Regensburg (OTH)
Universität Regensburg
Electrochaea GmbH
Viessmann Deutschland GmbH
Westnetz GmbH
Deutscher Verein des Gas- und Wasserfaches e.V. - Technisch-wissenschaftlicher Verein - (DVGW)

Last updated on 2018-22-11 at 16:47