The low diversity of forest tree species used in the formation of planted forests in Brazil, based mainly on
Eucalyptus
and
Pinus
genus, has led to study of alternative woods that show good productive potential.
Thus,
Pterogyne nitens species (madeira-nova), which shows good growth in Brazil’s northeast region, it
has aroused interest despite little research on their technological characteristics. The objective of this study
was to analyze the potential of
Pterogyne nitens wood for the charcoal production. Nine-year-old timbers
were harvested in Vitória da Conquista town, Bahia state. The woods were fragmented and carbonized in
a muffle furnace with electric heating and final temperatures of 300°C, 450°C and, 600°C. Analysis were
performed of carbonization process (yield in charcoal, condensable gases and non-condensable gases),
apparent density (0% moisture), friability, superior heating power and, immediate chemistry of charcoal.
Based on the results, it could be concluded that the fixed carbon and superior heating value of produced
charcoal increased with the increasing of the final carbonization temperature. On the other hand, the
increasing of the final carbonization temperature caused a reduction in the content of volatile materials and
charcoal yield. The yield of non-condensable gases and friability of charcoal increased with the elevation of
final carbonization temperatures from 300ºC to 450ºC, remaining constant to higher temperatures. Finally,
the final carbonization temperature of 450°C was considered optimal for carbonization of that studied wood.
