A Comparative Evaluation of Combustion Characteristics of Araucaria cunninghamii, Intsia bijuga and Pometia pinnata for Bio-Energy Source

Burning woody biomass for energy is gaining attention due to the environmental issues associated with fossil fuels and carbon emissions. The released from burning wood absorbed by plants and, hence, offsets pollution. purpose of this study was investigate combustion characteristics (heat calorific values ash contents) three timbers: Araucaria cunninghamii, Instia bijuga, Pometia pinnata recommend fuelwood. test samples were sawdust particles (treatment) solid woods (control) extracted heartwoods. oven dried, sieved, pelletized into pellets using a hand-held pelletizing device, thus, forming cylindrical dimension (volume 1178.57 mm3, oven-dry density 0.0008 g/mm3). Meanwhile, cubed dried 1000.00 0.001 Prior in semi-automatic bomb calorimeter, 90 specimens (15 replicates per treatment control species) conditioned 14% moisture content (at temperature 105 °C) weighed constant (unit) mass (1.0 g). heat outputs residues (of treatments) analyzed statistically. results indicated variability between species. Comparatively, A. cunninghamii produced higher value (18.546 kJ/g) than (18.376 kJ/g), whilst I. bijuga P. generated lower (17.124 kJ/g 18.822 kJ/g, respectively) (18.415 20.659 respectively). According analysis, (6.3%), followed (4.5%), (2.8%). species could not meet standard requirement (20.0 unsuitable However, an equivalent (20.659 be potential