SciELO - Scientific Electronic Library Online

 
vol.18 número4Gasificación del aserrín de pino (Pinus arizonica) en un reactor de lecho fluidizado: Análisis de las variables del procesoThe effects of boron derivatives as pretreatment chemicals for biodegradation of sunflower stalks índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Maderas. Ciencia y tecnología

versión On-line ISSN 0718-221X

Resumen

FAEDO DE ALMEIDA, Caio Cesar et al. Applicability evaluation of Cupressus lusitanica for pulp production. Maderas, Cienc. tecnol. [online]. 2016, vol.18, n.4, pp.651-662. ISSN 0718-221X.  http://dx.doi.org/10.4067/S0718-221X2016005000057.

This paper aimed to study Cupressus lusitanica wood tracheids biometrics along radial direction and chemical analysis in order to encourage the use of new forest species for pulp production in southern Brazil. Axial tracheids anatomical analysis was held in 3 positions, in the pith-periphery direction. Total length, total diameter and lumen diameter were analyzed, and wall thickness, flexibility coefficient, wall fraction, felting index and Runkel's ratio were calculated based on these variables. Chemical analysis determined total extractives, sodium hydroxide attack degree, ash, lignin and holocellulose content. For anatomical variables, a statistically significant increase in the pith-periphery direction was observed for total length (L = 5,85mm), for total diameter (D = 47,18µm), lumen diameter (d = 32,92µm) and wall thickness (e = 14,26µm) was observed stabilization from intermediate section. The species was characterized as with high rigidity tracheids (WF = 61,73%), although being considered "good" for wood pulp production (RI = 0,93). The chemical composition showed high lignin content (L = 36,21%) and low holocellulose content (H = 59,19%). Cupressus lusitanica wood showed appropriate anatomical characteristics to be part of the pulp industry raw material supply. However, chemical properties may compromise the species use due to high lignin content.

Palabras clave : Cypress; felting index; fiber lenght; Runkel index; tracheids.

        · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons