Pyrolysis kinetics and thermodynamics of typical plastic waste

The global plastics production increased over the past decades and some alternatives that have been developed to manage plastic wastes were recycling and energy recovery method. In order to better understand the reaction mechanism and kinetic model of plastic waste pyrolysis. The pyrolysis kinetics and thermodynamic parameters of PVC cable sheath were studied in detail. Flynn-Wall-Ozawa (FWO) was used to calculate the activation energy values and Coats-Redfern (CR) model-fitting method was used to determine the reaction mechanism. Three pyrolysis stages can be found in three temperature ranges. The first two stages correspond to the conversion rate of 0.10 to 0.60 and 0.60 to 0.85, respectively. The estimated activation energy values range from 132.78 kJ mol-1 to 149.5 kJ mol-1 with the mean value of 141.54 kJ mol-1 at the first stage while they fall in 193.85 kJ mol-1 to 266.44 kJ mol-1 with the mean value of 235.37 kJ mol-1 at the second stage. The contracting area model and the fifth order model are re...