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The objective of this study was to improve the quality of j abon (Anthocephalus cadamba) wood pellets through torrefaction with Counter-Flow Multi-Baffle (COMB) reactor and electric furnace ( EF ). COMB is a reactor that can conduct torrefaction with a short residence time, approximately around 3 to 5 min. The torrefaction with COMB reactor wa s conducted at 260 °C and 280 °C C, with a residence time of 3 min. The t orrefaction with EF use d the temperature of 260 °C and 280 °C with a duration of 20 min. The pellet properties evaluated include the color changes, physical characteristics, and heating values. The result show ed that the color of Jabon wood pellet was totally changed after torrefaction with COMB reactor reaching the highest overall color-change (∆E *) of 21,9 in the long pellets and 21,7 in the short pellets , while torrefaction with EF resulted in the highest ∆E* of 28,6 and 23,2, in the long and short pellets, respectively. The initial moisture content of the long and short pellets of Jabon wood were 12 , 41% and 12 , 33% . A fter torrefaction with COMB the moisture content decreased to 2 , 85% and 2 , 61%, while after torrefaction with EF the value s decreased to 2 , 77% and 2 , 58%. The initial density of the long and short pellets were 1 , 05 g/cm 3 and 0 , 97 g/cm 3 . The density decreased to 0 , 91 g/cm 3 and 0 , 76 g/cm 3 after torrefaction with COMB reactor , and decreased to 0 , 87 g/cm 3 and 0 , 75 g/cm 3 after torrefaction with EF. The research result also show ed that the initial heating value of long and short pellets of 17 , 69 MJ/kg increased to 31 , 79 MJ/kg (long pellets) and 32.02 MJ/kg (short pellets) after torrefaction with COMB reactor, and increased to 19.74 MJ/kg (long pellets) and 19.99 MJ/kg (short pellets) after torrefaction with EF . Torrefaction with COMB reactor with shorter residence time resulted in a higher improvement in bioenerg etic properties of j abon wood pellets in comparison to torrefaction with EF . Keywords: Anthocephalus cadamba, Counter-Flow Multi Baffle, torrefaction

Effects of Torefaction with Counter-Flow Multi Baffle (COMB) Reactor and Electric Furnace on the Properties of Jabon (Anthocephalus cadamba) Pellets