A Degradation Kinetics Model of Poly(ethylene terephthalate) Waste by Glycolysis Process as Green Route
Volume Title: 1
Hamedan University of Technology
The glycolysis of poly(ethylene terephthalate) (PET) waste was performed in the depolymerization reactor. A hydrotalcite catalyst was used to degradation of PET waste through the reaction of glycolysis. The effects of the weight ratio of EG to PET, reaction temperature and reaction time on the yield of bis(hydroxyethyl terephthalate) (BHET) are investigated. The conversion of PET and yield of BHET reach about 92.6 % and 82 % under the optimal experimental conditions. An evolution of the glycolysis reaction is proposed. In addition, the kinetic of PET waste is investigated. The results showed that the glycolysis process is a first-order kinetic reaction and the activation energy was 79.3 kJ/mol.