Impianti biogas di nuova generazione

The anaerobic digestion or methane fermentation is a complex natural bio-chemical process, which consists of a bio-degradation of organic substances under anaerobic conditions (without oxygen) yielding the biogas: the biogas is a methane-rich gas that can be used as a fuel. The anaerobic digestion is activated by various bacteria groups, which act in three subsequent phases:
- first phase: hydrolysis;
- second phase: acid fermentation;
- third phase: methane-genesis.
The process usually takes place in the temperature range of 10-60°C, and it allows to convert the inlet organic fraction into biogas (gaseous phase) and fertilisers (slurry phase). The efficiency of the process, that is the production of biogas, is dependent on the level of bio-degradability of the inlet biomass nutrients; usually, the anaerobic digestion consumes 40-60% of the inlet organic fraction.
The present project (carried out by DIME-TPG) refers to a biomass anaerobic digestion plant (animal manure, silomais, agricultural residues) for power (about 1MWe) and heat generation, which is owned and operated by AgriEnergia Val Pesio Company.
Moreover, TPG is starting a new EU H2020 project, named Bio-Hypp, related to bio-fuel application in SOFC based hybrid systems.

Publications

  1. Traverso A., Santarelli M., Massardo A.F., Cali' M., 2003, A New Generalised Carbon Exergy Tax: an effective rule to control global warming, Journal of Engineering for Gas Turbines and Power, Vol. 125, pp. 972-978.
  2. Traverso A., 2007, Biomass, Encyclopedia of Energy Engineering and Technology, Taylor & Francis Group, LLC, New York.
  3. Santin M., Traverso A., Magistri L., 2009, Liquid fuel utilization in SOFC hybrid systems, Applied Energy, Vol. 86, pp. 2204-2212.