Catalytic and thermal oxidative pyrolysis of LDPE in a continuous reactor system

High-Temperature, Noncatalytic Oxidation of Polyethylene to a Fermentation Substrate Robustly Utilized by Candida maltosa

“…31 Focusing on polyethylene, previous work has shown that oxo-degradation at temperatures above 350 °C produced oxygenated volatile products as quickly as five seconds. 32 This process, known as thermal oxo-degradation (TOD), overcomes the environmental rate-limiting step. Because TOD involves exothermic partial oxidation reactions that supply energy to the endothermic carbon-bond cracking, less energy is needed to sustain the reaction.…”

“…Modest increases in temperature above the ambient environment are expected to dramatically increase the incorporation of oxygenated moieties among the depolymerization products of plastics. , This suggests that the rate of the overall process could be increased by harnessing oxo-degradation at temperatures higher than ambient, increasing the availability of oxygenated substrates for microbial utilization . Focusing on polyethylene, previous work has shown that oxo-degradation at temperatures above 350 °C produced oxygenated volatile products as quickly as five seconds . This process, known as thermal oxo-degradation (TOD), overcomes the environmental rate-limiting step.…”

Comparison of Dimethylformamide with Dimethylsulfoxide for Quality Improvement of Distillate Recovered from Waste Plastic Pyrolysis Oil

“…A large amount of paraffin, olefin, aromatic and acid components are contained in mixed waste plastic pyrolysis oil (WPPO) such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) and polyethylene terephthalate (PET). Until now, many studies, such as reaction by pyrolysis [2][3][4][5][6][7][8] only and pyrolysis reactions [1,[9][10][11][12][13] using a catalyst to produce high quality WPPO for use as fuel, have been reported. Moreover, many studies have been reported that examine the possibility of using WPPO as a renewable energy by comparing with commercial fuels [14][15][16], but few studies have been conducted to improve the quality of the distillate recovered through a distillation operation for low-grade WPPO.…”

Studying the Utilization of Plastic Waste by Chemical Recycling Method

“…In a plastic degradation study, it has been reported that the reaction products consist of a hydrocarbon mixture such as water insoluble saturated and unsaturated petrochemical raw material and that the distribution of molecular weights of these products is determined. By applying thermo-gravimetric method and thermal degradation technique, oxygenated and non-oxygenated polymers were degraded in a reactor consisting of different sections [6,7]. In these studies some kinetic parameters were determined and it has been claimed that the liquid products obtained especially by degeneration of oxygenated poly-mers were alcohol, alkene, ether (ethoxymethane, ethoxy ethane, methoxy methane, etc.…”