Following a method based on the procedure given by Hubbard et al. [1]
the calorific values of combustion in oxygen at 298.15 K were measured
by static-bomb calorimetry for forest residues. This waste mainly com
ing from mount reforestation, construction of firebreaks, etc., consti
tutes an important risk to originate forest fire. From combustion expe
riments the mean calorific value of all species studied was found clos
e to 19 000 kJ.kg-1, similar to calorific values of Municipal Waste. I
t can be concluded that this forest residues can be used as an additio
nal fuel to be added to Municipal Solid Waste in energy recovery plant
s. By doing this, energy, in this moment lost as abandoned residues, c
an be recovered. At the same time the elimination of this waste minimi
zes the risk of forest fires. Our results reasonably agree with litera
ture values.