Variation of Wood Pulping and Bleached Pulp Properties Along the Stem in Mature Eucalyptus globulus Trees
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چکیده
منابع مشابه
Variation of Wood Pulping and Bleached Pulp Properties Along the Stem in Mature Eucalyptus globulus Trees
The wood of a mature (40-year-old) Eucalyptus globulus Labill tree was characterized at different stem height levels (0%, 10%, 35%, and 50% of total height) regarding pulping, bleaching, and paper properties. Pulp yields increased upwards from 46% to 50%, and Kappa number decreased from 17.5 to 12.3 at 0 and 50% height, respectively. The estimated specific wood consumption ranged from 3.2 m odt...
متن کاملGenetic Variation in the Chemical Components of Eucalyptus globulus Wood
Despite the ecological and economic importance of lignin and other wood chemical components, there are few studies of the natural genetic variation that exists within plant species and its adaptive significance. We used models developed from near infra-red spectroscopy to study natural genetic variation in lignin content and monomer composition (syringyl-to-guaiacyl ratio [S/G]) as well as cell...
متن کاملmicropropagation of eucalyptus globulus through mature trees
eucalyptus globulus is an important rapid-growing trees in eucalypts that applied for agroforestry and tree improvement programs. it has been used as a source of pulp in paper industry, essential oil and honey production. asexual propagation with conventional methods such as cutting and graft wasnot possible or obtained success was very low, because of hard proliferation of adventitious roots. ...
متن کاملEucalyptus globulus Stumpwood as a Raw Material for Pulping
In this study, Eucalyptus globulus stumpwood samples collected from six different sites in Portugal were evaluated for their ease of pulping, using two delignification processes (kraft and alkaline sulfite-anthraquinonemethanol (ASAM)). Morphologically, the stumpwood included fibers with a mean length of 0.930 mm, diameter of 21.4 μm, lumen width of 9.1 μm, and cell-wall thickness of 6.1 μm. Th...
متن کاملVARIATION IN THE COMPOSITION OF WOOD EXTRACTIVES FROM Eucalyptus globulus DURING SEASONING
The variation in the content of extractives from Eucalyptus globulus wood has been studied during a three-month seasoning experiment. The decrease in the total acetone extract (by over 56%) after seasoning is well correlated to a parallel reduction on the colloidal pitch measured in black liquors. The composition of lipophilic extractives during the seasoning period has been studied by gas chro...
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ژورنال
عنوان ژورنال: BioResources
سال: 2015
ISSN: 1930-2126
DOI: 10.15376/biores.10.4.7808-7816