Assessment of Suitability of Wood Fibres of Four Nigerian Fruit Trees for Paper–Making

Ajuziogu, GC; Nzekwe, U; Chukwuma, HI

doi:10.4314/br.v8i2.66889

Cited by 5 publications

(5 citation statements)

References 2 publications

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“…Therefore, it is expected that P. biglobosa and M. excelsa produce poor paper. The RR values reported in this work are similar to other Nigeria timbers reported in previous works (Ezeibekwe, Okeke, Unamba & Ohaeri, 2009;Awaku, 1994;Ogunkunle, 2010;Oluwadare and Sotannde, 2007;Ajuziogu, Nzekwe & Chukwuma, 2010;Sadiku and Abdukareem, 2019).…”

Section: B Derived Fibre Morphological Indices Of the Wood Speciessupporting

confidence: 90%

Fibre Sourcing for the Nigerian Pulp Mills: Evaluation of Suitability Indices of Selected Nigerian Rainforest Wood Fibres

Sadiku

Micheal²

2022

Ina.J.For.Res

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To find a lasting solution to the problem of suitable fibre for pulp and papermaking in Nigeria, fibre suitability indices of nineteen wood species native to the rainforest zone of Nigeria were evaluated. Matured stems of the species were sourced and prepared for maceration. The fibre characteristics of the wood were carried out following ASTM D-1030-95 and ASTM D-1413-61. The fibres obtained were observed with the aid of a microscope and measurements of their morphology were done. A minimum of 25 fibres were measured for each species for accuracy. Selected morphological indices such as Runkel Ratio (RR), Flexibility Coefficient (FC), Slenderness Ratio (SR) as well as Rigidity Coefficient (RC) of the wood fibres were estimated. The results showed that the fibres lenght fall under short (1.05–1.36), medium-long (1.52–1.75), and long (2.0 mm) fibres criteria. All derived morphological indices showed significant variations from species to species. All fibres are not rigid and exhibited good SR with moderate rigidity and good felting power. They were all elastic; R. heudolotii and P. macrocarpa exhibited high elastic nature. They all have FC ≥ 50 and pass the RR ≤ 1, acceptable value for paper-making fibre except P. biglobosa and M. excelsa. The flexibility coefficients are in the range of 0.50 and 0.81. All the species pass the SR > 33 acceptable value for paper-making fibres. The species if harnessed as fibre blends in pulp and paper making furnish will help to solve the problem of inadequate long fibres for paper production in Nigerian pulp mills.

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Section: B Derived Fibre Morphological Indices Of the Wood Speciessupporting

confidence: 90%

Fibre Sourcing for the Nigerian Pulp Mills: Evaluation of Suitability Indices of Selected Nigerian Rainforest Wood Fibres

Sadiku

Micheal²

2022

Ina.J.For.Res

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“…For the coefficient of flexibility, the results were similarly recorded for Dacryodes edulis (0.57) by Ajuziogu et al (2010), Daniellia olivera (0.51) by Idu and Ijeomah (2000), and Leucaena leucocephala (0.63) by Oluwadare and Ashimiyu (2007). The coefficient of flexibility property is significant in producing pulp and paper.…”

Section: Discussion 41 Vessels Characteristicsmentioning

confidence: 59%

VARIATION OF THE ANATOMIC CHARACTERISTICS OF Anthocleista grandiflora WOOD AS A FUNCTION OF TREE AGE AND TRUNK POSITION

Dorwu,

Antwi,

Mensah

et al. 2024

NAT

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This paper presents significant findings on the variation in the anatomical properties of Anthocleista grandiflora wood, which could greatly influence its utilization in various products. Cubic-shaped heartwood and sapwood specimens were extracted at the base, middle, and top of boles from 38-, 43-, and 47-year-old trees. The variations in cell morphology and anatomical characteristics were meticulously assessed. The specimens were prepared into 3 mm x 10 mm fragments, macerated, and viewed under a microscope using Motic Image plus 2.0 ML software. The following parameters were determined: average values of fiber length, fiber diameter, lumen width, double fiber wall thickness, Runkel ratio, aspect ratio, coefficient of rigidity, and coefficient of flexibility of trees at the base, middle, and top. Notably, there were more vessels in sapwood than in heartwood, and the vessel areas increased with increasing vessel lengths. The results also revealed that in the heartwood region, the fraction of vessel lumen increases with tree age in the base, middle, and top sections. These findings are significant as they provide a comprehensive understanding of the anatomical properties of A. grandiflora wood, which is classified as wood from numerous vessels, a common characteristic of noble woods. The wood exhibited anatomical properties suitable for cellulose, paper, and fiber-based products, highlighting its potential in various industries. Keywords: wood quality; fibers; morphological characterization; timber industry. Variação das características anatômicas da madeira de Anthocleista grandiflora em função da idade e da posição no troco RESUMO: Objetivou-se avaliar as propriedades anatômicas da madeira de Anthocleista grandiflora e as suas possíveis aplicações. Amostras do cerne e alburno foram extraídas na base, meio e topo de árvores com 38, 43 e 47 anos de idade. Em seguida, foram avaliadas variações na morfologia celular e nas características anatômicas, por meio de fragmentos de 3 mm x 10 mm, macerados e visualizados em microscópio utilizando o software Motic Image plus 2.0 ML. Foram avaliados: comprimento da fibra, diâmetro da fibra, largura do lúmen, espessura da parede dupla da fibra, razão de Runkel, razão de aspecto, coeficiente de rigidez e coeficiente de flexibilidade das árvores na base, meio e topo. Verificou-se mais vasos no alburno do que no cerne, e as áreas dos vasos aumentaram com o aumento de seu comprimento. Os resultados obtidos também indicaram que na região do cerne a fração do lúmen dos vasos aumenta com a idade árvores nas seções da base, intermediária e topo, sendo os valores de 14.76, 11.38 e 20.73 mm para 38 anos; 23.74, 22.13 e 23.09 mm para 43 anos; 28.62, 12.89 e 25.01 mm para 47 anos. A A. grandiflora foi classificada como madeira de numerosos vasos, característica comum para madeiras nobres. A madeira apresentou propriedades anatômicas adequadas para celulose, papel e produtos à base de fibras. Palavras-chave: qualidade da madeira; fibras; caracterização morfológica; indústria madeireira.

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“…The good wood for pulp and paper production is expected to have a Runkel ratio of less or equal to 1 (Kpikpi, 1992). The Runkel ratio of A. senegal (0.99 µm) compares favorably to that of Anthonotha macrophylla (0.99 µm) and Dialium guineensis (0.99 µm) which are hardwood species in the Nigerian rainforest ecosystem (Ezeibekwe et al, 2009), and higher than the reported 0.79 µm for tropical Pinus species (Ajala, 1997) and 0.70 µm for Dacryodes edulis (Ajuziogu et al, 2010). A good wood suitable for pulping, must have fibres with satisfactory flexibility (Idu & Ijeomah, 2000).…”

Section: Discussionmentioning

confidence: 66%

Wood anatomical features of some Nigerian species of Acacia Mill and their suitability for paper making

Owolabi

Odiye

Akinloye

et al. 2021

RIPB

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A comparative wood anatomical study of six species of the genus Acacia commonly found in Nigeria was carried out. Wood samples were collected from matured branches of plants in different locations in Mazah and Shere Hills, Jos, Plateau State, Nigeria. Transverse, tangential and radial longitudinal sections as well as wood macerates were prepared and mounted unto microscopic slides using standard anatomical methods. All the species had diffused porous wood, heterogeneous rays, aseptate fibres and predominantly solitary vessels with simple perforation plate, few pore clusters and pore multiples. Banded paratracheal axial parenchyma was common in all taxa except in A. senegal which was predominantly paratracheal without bands. Multiseriate rays were common features in all taxa except in A. nilotica which had predominantly uniseriate rays. Quantitative wood anatomical characters such as fibre length, fibre diameter, fibre lumen diameter, fibre wall thickness, vessel length, vessel diameter, ray length, ray diameter and pore diameter were of taxonomic importance in the delimitation of the studied taxa. The Runkel ratio of A. senegal (0.99µm) compared favourably with some hardwood species in the Nigerian rainforest ecosystem hence this taxon could be exploited for pulp and paper in Nigeria.

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Assessment of Suitability of Wood Fibres of Four Nigerian Fruit Trees for Paper–Making

Cited by 5 publications

References 2 publications

Fibre Sourcing for the Nigerian Pulp Mills: Evaluation of Suitability Indices of Selected Nigerian Rainforest Wood Fibres

Fibre Sourcing for the Nigerian Pulp Mills: Evaluation of Suitability Indices of Selected Nigerian Rainforest Wood Fibres

VARIATION OF THE ANATOMIC CHARACTERISTICS OF Anthocleista grandiflora WOOD AS A FUNCTION OF TREE AGE AND TRUNK POSITION

Wood anatomical features of some Nigerian species of Acacia Mill and their suitability for paper making

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