Results from the Extensive Technical Exploitation in a Bio-Gas Facility for the Optimization of Raw Bio-Gas Production for the Gas Power Supply into the Natural Gas Grid

R. Sutter, J. Liebetrau, M. Nelles & F. Scholwin
The present study indicates that anaerobic mesophilic fermentation of sugar beets, an energy crop, in a mixture with ensiled whole crop maize substrate, for high continuous production of methane (CH4) as a renewable energy source was investigated. Continuous anaerobic digestion of stillage was performed in an stirred tank reactor (CSTR) at 43 ± 1 °C running 286 days. Results showed that maximum specific Gas Production Rate (GPR) of 224 lN/kgFM or 800 lN/kgoTS and CH4...