Abstract
This study investigated the combustion-pyrolysis characteristics and kinetics of blends consisting of diesel and biodiesel at varying concentrations. To assess these characteristics, thermogravimetry (TG-DTG) and a differential scanning calorimeter (DSC) were employed as innovative tools for energy source evaluation. The experimental trials were conducted in two distinct atmospheres, namely nitrogen and air, to elucidate the pyrolysis and combustion properties of the diesel-biodiesel blends. Key parameters were systematically identified and analyzed, including reaction regions, peak temperatures, heat flow rates, and mass losses within the reaction intervals. Furthermore, various kinetic methods, encompassing both differential and integral-based approaches, were utilized to determine the kinetic parameters of the reactions, specifically the activation energy and Arrhenius constant. In the air atmosphere, the activation energy values exhibited a range of 22.1–58.8 kJ/mol, while in the nitrogen atmosphere, they exhibited variability within the range of 15.6–44.5 kJ/mol.
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