Critical Technology Factors of Biogas Plants Using Mixed Materials

L. Tóth1, J. Beke1, Z. Bártfai2, I. Szabó2, I. Oldal2, and László Kátai2

1. Institute of Process Engineering, SzentIstván University, Hungary

2. Institute of Mechanics and Machinery, Faculty of Mechanical Engineering, SzentIstván University, Hungary

Abstract: Biogas production is a well spread, up-to-date technology to utilise biomass in Europe. The applied technologies are based on mesophile, or thermophile methods, and the mixture of them. The applicable, effective energy production for biomass always depends on the input materials and the essential preparation of them, the “recipe”, and technological parameters that must be strictly controlled during the process. Based on the operation of an existing Hungarian biogas plant our article deals with these critical points of the biogas production technology.

Key words: biogas, sewage sludge, fermentation, foam formation