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Nor Hakimin Abdullah – One of the best experts on this subject based on the ideXlab platform.
Preliminary study on properties of small diameter wild Acacia Mangium species aspotential biomass energy sources, 2016Co-Authors: Mohd Sukhairi Mat Rasat, Muhammad Iqbal Ahmad, Mohd Hazim Mohamad Amini, Razak Wahab, Puad Elham, Mohd Hafiz Jamaludin, Mohamad Faiz Mohd Amin, Nor Hakimin AbdullahAbstract:
Currently, the primary energy supply in Malaysia is dominant by non-renewable energy sources
such oil, natural gas and coal which contributed to the scarcity of these sources and occurrence of
global warming. This phenomenon raises the public concerns to diversify the energy sources to
sustain energy availability. To address these predicaments, biomass sources is among the prominent
alternative energy sources since it is renewable and possesses minimal harms to the environment.
Thus, the woody plant with high growth rate and high energy content that can be used to serve as
potential biomass energy sources. In this study, small diameter (5-8cm) of wild Acacia Mangium
species have been determined and compared accordingly three (3) different portions (bottom,
middle and top) and two (2) different particle sizes (0.5 and 1.5mm). The analysis conducted to
determine the properties of raw material of Acacia Mangium as biomass energy sources were
proximate, physical and energy content properties. The result obtained for the energy content
analysis of small diameter wild Acacia Mangium has a mean calorific value range from 16.35 to
18.35MJ/kg between portions and particle sizes. In order to determine the effect of portions and
particle sizes on each of the proximate, physical and energy content properties, two-way ANOVA
was performed. It shows that both the portions and particle sizes have significant effect on calorific
value (energy content) of small diameter wild Acacia Mangium at 99% of confidence level. In a
nutshell, the biomass energy properties of small diameter wild Acacia Mangium with different
portions and particle sizes were being determined.
Ahmad Nuruddin Zailani – One of the best experts on this subject based on the ideXlab platform.
Chemical Properties of small diameter wild Acacia Mangium Species., 2016Co-Authors: Ahmad Nuruddin ZailaniAbstract:
Acacia Mangium is an exotic species grows wildly and widely planted and in Malaysia, in an effort for reforestation and also known to be used in pulp, furniture and paper industries. The objectives of this study is to detennine ﬁve (5) chemical properties (extractives, holocellulose, α-cellulose, hemicellulose and lignin) in three (3) portions (bottom, middle and top), and also two (2) parts (wood and bark) of small diameter wild Acacia Mangium. Samples was collected from Bandar Jeli, approximately 10 kilometres from UMK Jeli campus, Kelantan with DBH around 5-8cm. Samples are then ground using laboratory grade mill into powder form for chemical analysis. All analysis were done according to TAPPI standard method, except hemicellulose, which data was collected through equation. All data and results were statistically analysed using two-way ANOVA and Tukey’s Post Hoc test. Results acquired reveals that extractives content is the highest in bottom portion, bark part (15 .03%). Highest holocellulose percentage can be found in top portion of wood part (85.99%). Highest α-cellulose content is in top portion of wood part (49.84%). Highest hemicellulose content can be found in top portion of wood part (36.15%). Lignin percentage is the highest in bottom portion of bark part (31 .18%). This study has determined small diameter Wild Acacia Mangium as a useful alternative resource in pulp and furniture industries.
Liang Hong-wen – One of the best experts on this subject based on the ideXlab platform.
Density and Drying Characteristics for Various Ages of Acacia MangiumChina Wood Industry, 2006Co-Authors: Liang Hong-wenAbstract:
An experiment was conducted to study the density and drying characteristics of 7,10 and 20 year-old Acacia Mangium samples that were collected from the Gaofeng forest farm in Guangxi Province.Results found that the average air-dried density,basic density(based on moisture content at 12%) and oven-dried density were 0.534～0.588 g/cm~3,0.452～0.513 g/cm~3,0.498～0.545(g/cm~3) respectively.The density for air-dried samples was at the medium level compared with most domestic wood.The grade of drying characteristics with respect to initial check,inner check cross-section deformation,twisting deformation as well as drying speed for Acacia Mangium is level(3～4.)The results show that the density of Acacia Mangium tends to increase as it ages and that the older it is,the better are the drying characteristics with a grade decrease of only 1 or 2 levels.
Relativity of Content of Extractive with Acid-alkali Property of Acacia Mangium Willd WoodJournal of Nanjing Forestry University, 2004Co-Authors: Liang Hong-wenAbstract:
The content of extractive and acid-alkali property of Acacia Mangium Willd woods were analyzed and their relationships were discussed.The result shows:(1)Acacia Mangium Willd wood shows acidity and its pH is 5.34,the acid buffering capacity and alkali buffering capacity are 0.142 mmol and 0.053 mmol respectively,the extractive contents of cold-water,hot-water,1% NaOH and benzene-alcohol are 4.84%,5.75%,15.98% and 6.09% respectively.(2)the heartwood acid buffering capacities,the heartwood extractive contents of cold-water,hot-water,1% NaOH and benzene-alcohol are higher than sapwood,and decreased with the trunk height,the heartwood pH and alkali buffering capacity are lower than sapwood,and increased with the trunk height.(3)the pH shows negative correlation with the acid buffering capacity,the extractive contents of hot-water,1% NaOH and benzene-alcohol,and positive correlation with alkali buffering capacity and extractive content of cold-water.