Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.11/1987
Título: Influence on pulping yield and pulp properties of wood density of Acacia melanoxylon
Autor: Santos, A.
Anjos, O.
Amaral, M.E.
Gil, N.
Pereira, H.
Simões, R.
Palavras-chave: Acacia melanoxylon
Wood density
Pulp yield
Fibre length
Kappa number
Data: 2012
Editora: Springer
Citação: SANTOS, A. [et al.] (2012) - Influence on pulping yield and pulp properties of wood density of Acacia melanoxylon. J. Woo Sci. ISSN 1435-0211. 58. P. 479-486.
Resumo: Wood density and pulp yield are key parameters in the evaluation of tree productivity and quality for pulping and their relationships are of high practical importance. The influence of wood density on pulp yield and other pulp quality parameters was investigated using Acacia melanoxylon and its natural variability as a case study. Twenty trees were harvested (five trees in each of four sites in Portugal), and wood discs taken at different height levels, from the base to the top of the tree, providing 100 wood samples, covering the natural variability of wood density ranging from 449 kg m-3 to 649 kg m-3. Under the same experimental conditions of kraft pulping, screened pulp yield ranged 47.0–58.2 %, Kappa number 10.9–18.4, ISO brightness 14.9–45.6, fibre length 0.660–0.940 mm and fibre width 16.2–22.9 lm. The pulp yield and Kappa number were not correlated with wood density. Higher pulp yields were associated with lower Kappa numbers and alkali consumption, suggesting the important role of chemical composition of wood on kraft cooking. The results confirm the high pulping potential of Acacia melanoxylon trees grown in Portugal and suggest the possibility of tree selection using both wood density and pulp yield.
Descrição: DOI 10.1007/s10086-012-1286-2
Peer review: yes
URI: http://hdl.handle.net/10400.11/1987
Versão do Editor: http://link.springer.com/article/10.1007/s10086-012-1286-2
Aparece nas colecções:ESACB - Artigos em revistas com arbitragem científica



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