Characterization and within-tree variation of wood anatomy of Acacia melanoxylon

Santos, A.; Pereira, Helena; Anjos, Ofélia

doi:10.29352/mill0205.01.00150

Cited by 4 publications

(5 citation statements)

References 14 publications

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“…This value agrees with the one previously reported by Santos et al (2012), Anjos et al (2011), andSantos et al (2018) on A. melanoxylon. Furthermore, the values were lower than E. globulus wood, which is the most well-known pulpwood, and its Runkle value was 0.56 as reported by Patt et al (2006).…”

Section: Variation Of Derived Ber Values From Pith To Peripherysupporting

confidence: 93%

“…However, similar to the results of Jorge (1994) and Santos et al (2018), which ranged from 1.8μm to 2.5μm and 2.00μm and 2.40μm respectively. However, the result was less than A. cochliacantha which increased 5 to 7μm from pith to bark (Quintanar Isaias et al, 2005).…”

Section: Variation Across From Pith To Peripherysupporting

confidence: 88%

“…The overall mean value obtained for exibility coe cient was less than previous work by Santos et al (2018) on A.melanoxylon wood, which was in the ranges of elastic ber (50-75%). Additionally, the value is less than other known pulpwood.…”

Section: Variation Of Derived Ber Values From Pith To Peripherycontrasting

confidence: 78%

“…Ona et al (2001) reported that runkel ratio was signi cantly related to pulp yield (positively) and digestibility (negatively). If the Runkle ratio < 1, the bre is highly appropriate for pulp and paper production; from 1 to 2 is regular; and above 2, it may not be used for paper (Santos et al 2018). All Runkle ratio values obtained in this study along with tree height and distance from pith were lower than 1 (Tables 1 and2), suggesting a good potential for pulp and paper production.…”

Section: Variation Of Derived Ber Values From Pith To Peripherymentioning

confidence: 69%

“…Thereafter, an image was taken with a camera attached Motic BA210 microscope, and 30 cells were sampled from each of the three transversal locations of pith-to-sapwood, for which cell diameter, lumen diameters, and cell wall thickness were measured using the Motic software as described by Ishiguri et al (2016)( gure 2). The equations used for the computation of the derived values: Runkel ratio (Ibrahim and Abdelgadir, 2015), slenderness ratio (Samarih et al, 2011), exibility coe cient (Santos et al, 2018), and wall coverage ratio (Hudson et al, 1998) were expressed in equations 1-4.…”

Section: Sample Preparationmentioning

confidence: 99%

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Suitability of Acacia decurrence Fiber Morphology For Pulp and Paper Making In Ethiopia

Abara

Gebeyehu

2022

Preprint

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The objective of this study was to investigate the fiber properties of Acacia decurrence as a alternative raw material quality evaluation for pulp and paper production. Trees from an even-aged stand with a similar stem diameter class were selected randomly. Wood discs were cross cut systematically from a log at the bottom (10%), middle (50%), and top (90%) position along the merchantable height, as well as a block of wood (2cmx2cmx2cm), was taken from pith to periphery: at near pith (10%), middle(50%), and near bark (90%) of disk radius. Fiber properties were determined, and their change with tree height and distance from the pith to the bark were evaluated. The fiber length, fiber width, lumen diameter, and cell wall thickness were measured while the derived fiber values were computed from the measured fiber dimensions. All the data were analyzed using a two-way analysis of variance. The results showed that the overall means were 1.37mm, 39.60µm, 9.68µm, 1.93µm, 0.39, 35.38, 24.82, and 0.09 for fiber length, fiber width, lumen diameter, cell wall thickness, Runkle ratio, slenderness ratio, flexibility coefficient, and wall coverage ratio, respectively. A.decurrence was found to fulfill most of the derived fiber values for pulp and paper production, as any part of the tree portion along tree heights and from the pith to the periphery can be utilized for pulp and paper production.

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Section: Variation Of Derived Ber Values From Pith To Peripherysupporting

confidence: 93%

Section: Variation Across From Pith To Peripherysupporting

confidence: 88%

Section: Variation Of Derived Ber Values From Pith To Peripherycontrasting

confidence: 78%

Section: Variation Of Derived Ber Values From Pith To Peripherymentioning

confidence: 69%

Section: Sample Preparationmentioning

confidence: 99%

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Suitability of Acacia decurrence Fiber Morphology For Pulp and Paper Making In Ethiopia

Abara

Gebeyehu

2022

Preprint

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Investigation of Fiber Properties of Eucalyptus globulus grown in Farta Woreda as Potential Source for Pulp and Paper Making, Amhara National Regional State, Ethiopia

Gebeyehu¹,

Abara²,

Genene³

2022

Preprint

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The aim of this study was to investigate the fiber properties and pulp and paper-making potential of Eucalyptus globulus grown in Farta Woreda, Amhara National Regional State, Ethiopia. Six trees with an age of eight years were sampled, and sample discs were taken at the bottom (10%), middle (50%) and top (90%) along the tree height, as well as 2x2x2 cm blocks of wood at 10%, 50% and 90% of the disc radius (distance from the pith to the bark of the tree). Fiber properties were determined, and their variation along tree height and transversally from pith to bark was evaluated. The results showed that the overall mean values along tree height and distance from the pith to the bark were 0.77mm for fiber length, 12.38µm for fiber diameter, 2.94µm for cell wall thickness, 8.23µm for lumen diameter, 19.61µm for fiber width, 0.74 for runkel ratio, 39.22% for slenderness ratio, 67.83% for flexibility coefficient, and 0.47 for wall coverage ratio. Fiber length, lumen and fiber diameter, fiber width, cell wall thickness, runkel, and wall coverage ratio decreased from the bottom to the top of the tree, while they increased transversally from the pith to the bark, except for lumen diameter and flexibility coefficient, which decreased transversally from the pith to the bark, whereas the flexibility coefficient value increased from the bottom to the top of the tree height. Slenderness ratio did not show significant variation along tree height, while it showed an increase transversally from the pith to the bark.

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Suitability of Acacia decurrence Fiber Morphology For Pulp and Paper Making

Abara

2022

Preprint

View full text Add to dashboard Cite

The objective of this study was to investigate the fiber properties of Acacia decurrence as an alternative raw material quality evaluation for pulp and paper production. Trees from an even-aged stand with a similar stem diameter class were selected randomly. Wood discs were cross cut systematically from a log at the bottom (10%), middle (50%), and top (90%) position along the merchantable height, as well as a block of wood (2cmx2cmx2cm), was taken from pith to periphery: at near pith (10%), middle(50%), and near bark (90%) of disk radius. Fiber properties were determined, and their change with tree height and distance from the pith to the bark were evaluated. The fiber length, fiber width, lumen diameter, and cell wall thickness were measured while the derived fiber values were computed from the measured fiber dimensions. All the data were analyzed using a two-way analysis of variance. The results showed that the overall means were 1.37mm, 39.60µm, 9.68µm, 1.93µm, 0.39, 35.38, 24.82, and 0.09 for fiber length, fiber width, lumen diameter, cell wall thickness, Runkle ratio, slenderness ratio, flexibility coefficient, and wall coverage ratio, respectively. A.decurrence was found to fulfill most of the derived fiber values for pulp and paper production, as any part of the tree portion along tree heights and from the pith to the periphery can be utilized for pulp and paper production.

show abstract

Characterization and within-tree variation of wood anatomy of Acacia melanoxylon

Cited by 4 publications

References 14 publications

Suitability of Acacia decurrence Fiber Morphology For Pulp and Paper Making In Ethiopia

Suitability of Acacia decurrence Fiber Morphology For Pulp and Paper Making In Ethiopia

Investigation of Fiber Properties of Eucalyptus globulus grown in Farta Woreda as Potential Source for Pulp and Paper Making, Amhara National Regional State, Ethiopia

Suitability of Acacia decurrence Fiber Morphology For Pulp and Paper Making

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