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Environmental problems are made worse by the accumulation of plastic waste that results from a rise in the demand for plastics. This study investigated the thermal pyrolysis of LDPE to plastic pyrolysis oil at different temperatures (550 and 600 °C). The thermal, morphological, and chemical composition of the LDPE raw material and pyrolysis product has been studied using a variety of characterization techniques, including thermogravimetric analysis (TGA), differential thermal analysis (DTA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX). The highest liquid yield of 7.8% and lowest liquid yield of 3% were achieved using 15 g of LDPE at temperatures of 550 and 600 °C, respectively. The TGA data showed that the optimal cracking of LDPE polymers requires a temperature range of 350–500 °C. The FTIR study revealed that the liquid obtained from pyrolysis has properties such as low-molecular-weight alkanes, aromatic compounds, and some alkenes, most likely falling between diesel and gasoline. These attributes make it a promising replacement for transportation fuel in the future.

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Thermal Pyrolysis of Low-Density Polyethylene: Characterization and Fuel Potential of Pyrolysis Oil

  • 会议论文

  • 发表日期：

    2025年

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  • Jhilmil Modi,
  • Arshad Ali,
  • Iyman Abrar

摘要

Environmental problems are made worse by the accumulation of plastic waste that results from a rise in the demand for plastics. This study investigated the thermal pyrolysis of LDPE to plastic pyrolysis oil at different temperatures (550 and 600 °C). The thermal, morphological, and chemical composition of the LDPE raw material and pyrolysis product has been studied using a variety of characterization techniques, including thermogravimetric analysis (TGA), differential thermal analysis (DTA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX). The highest liquid yield of 7.8% and lowest liquid yield of 3% were achieved using 15 g of LDPE at temperatures of 550 and 600 °C, respectively. The TGA data showed that the optimal cracking of LDPE polymers requires a temperature range of 350–500 °C. The FTIR study revealed that the liquid obtained from pyrolysis has properties such as low-molecular-weight alkanes, aromatic compounds, and some alkenes, most likely falling between diesel and gasoline. These attributes make it a promising replacement for transportation fuel in the future.