Kinetic Model Development for Decomposition of Mixed Waste Plastic

High and low density polyethylene, HDPE and LDPE; polypropylene, PP; polystyrene, PS; and polyethyleneterephthalate, PET) make up the majority of municipal plastic waste (MPW). The goal of this study was to create a kinetic model to apply thermogravimetric analysis to uncover the real reaction mechanism of mixed waste plastic (TGA). To determine the mechanism of MPW pyrolysis, a variety of techniques including Kissinger, Akahirae-Sunose, KAS, Malek, and linear model fitting were used. The results were evaluated using experimental data from TGA. Five types of waste plastic waste decomposition on different set point(10˚C/min & 20 ˚C/min), temperature of 30˚C to 530˚C and the sample size 1-4 mm. in the model fitting method we use the criado method. As a result of the fluctuation in apparent activation energy with conversion and kinetic model with heating rate, the results demonstrated that a complicated process, rather than a simple 1st order, occurs during the breakdown.