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040 _aBR-BrBNA
_beng
072 _aP07
_b8905
100 _aArantes, Marina Donária Chaves
100 _aTrugilho, Paulo Fernando
100 _aMoulin, Jordão Cabral
100 _aGoulart, Selma Lopes
100 _aBaraúna, Edy Eime Pereira
100 _aAbreu Neto, Raul de
245 _aAnatomy of Charcoal and Carbonization Effect under Eucalyptus Fibers’ Dimensions
500 _aPublicação on-line; 17 ref.; 3 tables; 3 illus.; Summary (En)
520 _a Abstract The anatomy of wood and charcoal was analyzed by scanning electron microscopy in three radial positions of E. urophylla and E. Grandis in different diameter classes at six years. The carbonization process was given in the muffle with an average rate of 0.5 °C increment per minute, using initial temperature of 150 °C and maximum of 450 °C. It was observed that the pore diameter presented higher values in the samples obtained in the internal position. The diameter classes of the trees almost did not influence the characteristics of the fibers. In the external position (close to the shell) fibers with higher values of cell wall thickness and smaller values of lumen diameter and width were identified. The fiber lumen diameter was not affected by the wood carbonization process, whereas the cell wall thickness and fiber width were reduced. Keywords: thermal wood degradation, scanning electron microscopy, pores and fibers of charcoal.
650 _aCARVÃO VEGETAL
650 _aPOROSIDADE
650 _aFIBRA
650 _aMICROSCOPIA ELETRÔNICA
773 0 _02929
_9347956
_dRio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994
_o2025-0455
_tFloresta e Ambiente (Brazil)
_x1415-0980 / ISSN 2179-8087 0nline
_gv. 27(1) p. 1-7; (2020)
_wBR2026001200
856 _uhttps://www.scielo.br/j/floram/a/WdnkjZ8bwssGFHc85XPcqkL/?format=pdf&lang=en
942 _cANA
999 _c341740
_d341740