The Effect of Chemical Components of Thermally Treated Meranti Wood on the Higher Heating Value
2025
Viera Kučerová | Katarína Dúbravská | Tatiana Hýrošová | Jaroslava Štefková
The effects of thermal treatment on the changes in the chemical composition and higher heating values (HHV) of tropical hardwood meranti were investigated in a study. The samples of light red meranti wood (Shorea spp.) with dimensions of 20 mm ×: 100 mm ×: 700 mm were conditioned at 20 °:C (control samples) and thermally treated at 160, 180, 200, and 220 °:C. The chemical composition and HHV of control samples and thermally treated samples were evaluated. The chemical composition was measured using the procedures of Seifert, Wise, and ASTM. After thermal treatment, a significant reduction in holocellulose and hemicellulose content and an increase in extractives and lignin were observed. Consequently, we observed a rise in HHVs. HHV of thermally treated wood was strongly positively linearly correlated with lignin content (Pearson r = 0.9850, p <: 0.001, R2 = 0.9702, n = 15). Regression analysis showed that the model HHV = 0.1443(lig) + 16.012 is suitable for predicting the HHV of thermally treated wood, if the lignin content is known.
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