tempera-ture of 490 8C can be treated as the lower temperature limit for the char ignition. Rapid volatilization of lignin (major factor) and oxidation of char (minor factor) resulted in appearance of the third peak temperature (580 8C on the DTG curve), basically associated with lignin volatilization [21–23]. Two more important combustion characteristics – the ignition temperature (Tign) and the burnout temperature (Tb) – were determined based on analysis of the TG/DTG curves from the thermogravimetric (combustion) test: Tign = 250 8C and Tb = 675 8C.