Biomass at Sutri (Italy)
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In Italy, at Sutri (in the region of Lazio) there is the only zoo technique firm that produces electric energy through “a biogas system”.
Mr Bruni's firm has got a breeding of 310 Frisona race cows whose defections, through a fermentative activity, produce mainly methane. The gas goes to power up an electricity – generating group for the electric energy.
OPEN QUESTIONS
1) Which condition allows cows to produce milk ?
2) What is the peculiarity of the Frisona cows ?
3) Hich main gas is being produced during the fermentative activity ?
4) What is the percentage of the gas produced ?
5) Which other gases are being obtained ?
6) How long does the mixture take to get to the second digester ?
7) What is the difference between the gas produced in the first digester and in the second digester ?
8) Do you know any other kinds of biomass ?
9) Which kind of biomass produces gases? Name at least one of them and what its usage is.
10) What are the conditions favouring the fermentative process?
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