Abstract
The torrefaction properties of Acacia (Acacia mangium) and Albasia (Paraserianthes falcataria) were investigated by response surface methodology. Torrefaction was performed at 220–280°C for 20–80 min depending on severity factor. Carbon content in the torrefied biomass increased with severity factor, whereas hydrogen and oxygen contents decreased both biomass. The calorific value of torrefied Acacia ranged from 20.03 to 21.60 MJ/kg, suggesting that the energy contained in the torrefied biomass increased by 5.09 to 13.62%, when compared with that in the untreated biomass. However, the calorific value of Albasia was relatively low, compared to that of torrefied Acacia. The weight loss of Albasia was higher than that of Acacia under a given torrefaction condition. The reaction temperature for torrefaction was an important factor to obtain high energy yield, whereas the effect of time was considerable lower. High temperature and short torrefaction time is required to obtain the highest energy yield from torrefaction using Acacia and Albasia.
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Kim, YH., Na, BI., Ahn, BJ. et al. Optimal condition of torrefaction for high energy density solid fuel of fast growing tree species. Korean J. Chem. Eng. 32, 1547–1553 (2015). https://doi.org/10.1007/s11814-014-0360-4
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DOI: https://doi.org/10.1007/s11814-014-0360-4