TGA and kinetic study of different torrefaction conditions of wood biomass under air and oxy-fuel combustion atmospheres

Torrefaction influence on combustion kinetics of Malaysian oil palm wastes

“…According to Barzegar and co-workers [38], Ea increases due to hemicellulose degradation and decrease for lignin decomposition, which explains the lower Ea values in the second step reaction. As it seems that more than one reaction mechanism takes place during the process, further studies should consider using DAEM or multicomponent models in order to properly define the reactions that occur.…”

“…Torrefaction was carried out in an anoxic atmosphere generated by adding an inert gas (nitrogen) until the oxygen inside the reactor was beneath 0.1% measured using an oxygen analyser. Time and torrefaction temperatures have been established according to literature [12,38,41].…”

“…Model free methods includes Friedman [27], Kissinger [28], Kissinger-Akahira-Sonuse (KAS) [29], Flynn-Wall-Ozawa (FWO) [30,31], Distributed Activation Energy Model (DAEM) [32,33], etc. In the last years, the focus on the kinetics of torrefaction process has increased [34][35][36][37][38], in order to optimize and improve efficiency of the process.…”

Oxidative Torrefaction of Sunflower Husk Pellets in the Kaolin Layer

“…Torrefaction is moderate thermochemical treatment of biomass at temperatures of 200-300 °C in the oxidizing and non-oxidizing atmosphere [20,21]. At the present time, most studies of sunflower husk torrefaction focused on the use of non-oxidizing atmosphere: torrefaction of sunflower residues in a tabletop heated reactor [22], torrefaction of sunflower seed shell in a tube furnace [23], torrefaction of sunflower seed shells in a thermogravimetric analyzer [24], torrefaction in a vertical reactor with external heating by combustion products [14], torrefaction in a multi-hearth furnace [25].…”

Investigation of Hazelnut Husk Combustion by using A Novel Non-linear Kinetic Model through Thermogravimetric Analysis

“…K. Jayaraman used the Arrhenius and Coats & Redfern methods to investigate the kinetics of coal-biomass blends [22]. Another methods which are Ozawa-Flynn-Wall [23][24][25], Kissinger-Akahira-Sunose (KAS) [26], Friedman [27][28][29] have been used to calculate kinetic parameters for different applications in the literature. These methods can calculate kinetic parameters with some assumption and using equation constants that cause some deficiency to achieve kinetic parameters.…”