Journal of Thermal Analysis and Calorimetry

, Volume 107, Issue 1, pp 293–298

Co-firing of biomass with coals

Part 2. Thermogravimetric kinetic analysis of co-combustion of fir (Abies bornmulleriana) wood with Beypazari lignite


The combustion of coal and coal/fir (Abies bornmulleriana) wood blends at the proper ratio (20, 40, 50 wt%) was investigated with thermogravimetric analysis (TG). The influence of biomass blends on thermal and kinetic behavior of coal was studied under non-isothermal conditions. The activation energy of the samples was evaluated with the Ozawa–Flynn–Wall model which compares the combustion of these biowastes with coal under non-isothermal conditions. Our research found that blending influences activation energy of coal; moreover, activation energy related to 50 wt% blend was more similar to pure wood combustion than to coal combustion. Therefore, the activation energy profile shifted from 80.6 to 169.3 kJ/mol. The average reaction order of the samples ranged from 0.13 to 0.35.


Combustion Coal–wood blends Thermogravimetric analysis Non-isothermal kinetics 

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  1. 1.Faculty of Engineering and Natural SciencesSabanci UniversityOrhanli, Tuzla, IstanbulTurkey

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