TY - JOUR
TI - Kinetic study of different biomass pyrolysis and oxygen-enriched combustion
AU - Castells Blanca
AU - Amez Isabel
AU - Manić Nebojša G
AU - Stojiljković Dragoslava D
AU - Medić Ljiljana
AU - Garcia-Torrent Javier
JN - Thermal Science
PY - 2022
VL - 26
IS - 5
SP - 4131
EP - 4145
PT - Article
AB - Global warming and the GHG effect have forced the reduction of the energetic  dependence on fossil fuels. Because of that, research focusing on biomass  properties, characteristics and energetic conversion has increased in the  last decades. The present study was carried out in terms of determination of  kinetic parameters, focusing on two different energetic conversion  processes: pyrolysis, carried out under nitrogen atmosphere, and  oxygen-enriched combustion, using an atmosphere of air enriched with 30%  oxygen. Three different lignocellulosic bio-mass samples were used.  Thermogravimetric analysis was performed using four different heating rates  in order to carry out a kinetic analysis using model free methods (Friedman,  Kissinger-Akahira-Sunose, and Flynn-Wall-Ozawa). The results showed that  oxygen-enriched combustion produced a more complete reaction with low char  values and activation energy values greater than pyrolysis values. Among the  kinetic methods, Friedman reported the most different values, acceptable for  pyrolysis process but not so much for oxygen-enriched combustion.