首页|Coconut fiber pyrolysis: specific heat capacity and enthalpy of reaction through thermogravimetry and differential scanning calorimetry 504527
Coconut fiber pyrolysis: specific heat capacity and enthalpy of reaction through thermogravimetry and differential scanning calorimetry 504527
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NSTL
Elsevier
This study aims to analyze the thermal decomposition through pyrolysis process of coconut fiber and its thermodynamic properties by simultaneous thermogravimetry (TG) and differential scanning calorimetry (DSC). Three decomposition stages were identified: dehydration, volatile release (characterized by two exothermic events), and carbonization. Regarding the thermodynamic properties, the specific heat capacities, c(p), were obtained using three methods: ASTM E1269-11, modified ASTM E1269-11, and method of total solids. We observed that the main differences in the c(p) profiles as a function of the temperature occurred above 538 K, due to the particularities of each method regarding the mass loss. The method of total solids proved to be more suitable for the determination of c(p). Besides that, three linear equations were proposed to predict the c(p) for each pseudocomponent and char of the biomass. The enthalpy of reaction (H-R) was estimated, 564.45 kJ/kg, from integration of the heat flow of reaction (Q(R)). The knowledge of these thermodynamic properties is useful for heat transfer modeling and reactor design.
NSTL
Elsevier
