Technical University Munich
Lehrstuhl für Rohstoff- und Energietechnologie
An der Maxhütte 1
Dr.-Ing. Wolfgang Mayer – project leader
Telephone: +49 (0) 94 21 - 18 71 06
Dipl.-Ing. Samir Binder – contact person
Telephone: +49 (0) 9661 908-410
Results are only available in German.
The high fiber fraction disturbs the fermentation process. In thermal processes, the protein (NOx- and SO2-emissions) and the high water content are the disturbing factors. Drying Brewery’s Spent Grain is excluded for energy reasons. The separation of the easy biodegradable substances in combination with water is realized in a screw press, in addition the effect of additives like tensides, acids or enzymes will be researched too. The suitability of the pressed water for a biogas plant will be demonstrated. The fibers can directly be fired in a combustion plant. Due to the fact that the energy content of Brewery’s Spent Grain is not high enough for the full energy supply of a brewery (max. 50 %), the combustion system must be adapted to biogas and other possible biomasses too.
The project aim is the combination of fermentation and combustion process for wet, fiber biomass, exemplary researched with Brewery’s Spent Grain (80 % water).