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Thermal properties of residual agroforestry biomass of Northern Portugal
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Orientador(es)
Resumo(s)
Biomass from forestry and agricultural sector provides an important contribution
to encounter the government’s targets for increasing bioenergy production and utilization.
Characterization of agricultural and forest wastes are critical for exploiting and utilizing them
for energy purpose. In the present work agricultural and forest wastes and shrubs were sampled
in two sites in north Portugal (Ave and Sabor basin) and subjected to Higher Heating Value (HHV)
and chemical composition quantification. The HHV was evaluated according to the methodology
described in Standard DD CEN/TS14918:2005. For the lignin content, the procedure was made by the
Klason method and the extractives content was determined with the Soxhlet method. For agricultural
and forest wastes the HHV values are identical with a range of 17 to 21 MJ kg-1. However, shrubs
biomass presentx slightly higher and statistically di erent values from agricultural and forest wastes,
varying between 19 and 21 MJ kg-1. Forest wastes contain higher levels of holocellulose compared
to agricultural wastes and, with respect to extractive contents, this trend is the reverse. There is a
general tendency for the woody components present thermo-chemical properties more suited for
energy purposes, than the residues formed by the branches and leaves
Descrição
Palavras-chave
wastes energy higher heating value chemical analysis macromolecules Portugal
Contexto Educativo
Citação
Energies 2019, 12, 1418
Editora
MDPI