Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Thermal Conversion Kinetics in the Pyrolysis of Polyethylene/Aluminum from Vacuum Packaging Waste
Submission Author:
Matheus Henrique Zanardini , PR , Brazil
Co-Authors:
Matheus Henrique Zanardini, Ivanir Luiz de Oliveira, Luís Antonio Pinheiro
Presenter: Matheus Henrique Zanardini
doi://10.26678/ABCM.COBEM2021.COB2021-1532
Abstract
The industrial production of fuels from organic sources can follow different thermal routes. Among them, pyrolysis could be a viable route to reduce environmental impacts due to polymer discharges. However, the wide polymeric variety and the presence of addition elements and fillers pose challenges to process control. This work studied the effects of thermal parameters on the pyrolysis of polyethylene/aluminum metallic (PE/Al) from vacuum packaging waste. Kinetic parameters were evaluated as a function of the heating rate between 10 and 40 °C.min-1 until 750 °C. An isoconversional kinetic model was applied to the results of Thermogravimetry (TG) and Differential Scanning Calorimetry (DSC). The PE/Al pyrolysis product showed only the inert material while the organic material was volatile (about 92.5% of the initial mass), fraction intended for energy purposes. The activation energies of the different samples were determined by the isoconversional method with Starink's simplification: (153.8±13.3) and (76.8±3.6) kJ.mol-1 for PE and PE/Al, respectively. The reduction in the activation energy value demonstrated the catalytic influence of the presence of metallic aluminum in the pyrolysis of this class of materials.
Keywords
Polyethylene, pyrolysis system, thermal degradation, activation energy
