Oxy-combustion of corn, sunflower, rape and microalgae bioresidues and their blends from the perspective of thermogravimetric analysis
2014
López, R. | Fernández, C. | Fierro, J. | Cara, J. | Martínez, O. | Sánchez, M.E.
Thermogravimetric analysis was used to study and compare the oxy-combustion of different blends of corn bioresidues with sunflower, rape and algae bioresidues. Non-isothermal thermogravimetric data were used to obtain the oxy-combustion kinetics of these bioresidues. This paper reports on the application of the Vyazovkin and Ozawa-Flynn-Wall isoconversional methods to evaluate the kinetic parameters (energy activation, pre-exponential factor and reaction order) in the oxy-combustion of the bioresidues studied.The activation energy obtained from corn oxy-combustion (E∼168.9 kJ mol⁻¹) was lower than that from the blends (corn-sunflower, E∼189.0 kJ mol⁻¹ and corn-microalgae, E∼201.9 kJ mol⁻¹) whereas the activation energy obtained from the corn-rape blend was the lowest (E∼155.9 kJ mol⁻¹).Both the Vyazovkin and Ozawa-Flynn-Wall methods yielded similar results.
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