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Advisor(s)
Abstract(s)
In the last decades efforts have been made to replace fossil fuels by more sustainable
feedstocks for the production of energy. A way to increase the travelable distance of this
feedstock is to increase its energy content. The objective of this work was to study the
increase in the calorific value of two of the most important wood species in the central region
of Portugal, a softwood, (Pinus pinaster Ait) and a hardwood (Eucalyptus globulus Labill.),
by mild torrefaction. The treatment was made in an oven during 2 -24 hours and temperatures
from 170ºC to 190ºC. Calorific value and insoluble lignin were determined. Results show that
there is an increase in the HHV (High Heating Value) of both pine and eucalypt samples
(higher in eucalypt) and that the increase is higher for higher treatment times. A good
correlation between the amount of lignin and the HHV was found.
Description
Keywords
Calorific value Eucalyptus Globulus Pinus pinaster Torrefaction Heat treatment Lignin amount
Citation
Domingos, I.; Ferreira, J.; Lopes, L. P. C. & Esteves, B. (2016). Increase of calorific value of two important feedstocks by mild torrefaction. Digital Proceedings of 11th Conference on Sustainable Development of Energy, Water and Environment Systems. Lisbon, 2016