Liquid Fuel Production from Polyethylene Plastic Waste by Pyrolysis Process

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Chokchai Mueanmas
Ruamporn Nikhom


Polyethylene is the most common plastics found in daily life. Its molecule is nothing more than a long chain of ethylene, two hydrogen atoms attached to each carbon atom, which can be changed to liquid fuel. The pyrolysis of plastics (polyethylene) to produce the fuel oil was investigated. The preliminary experiments were carried out in the range of temperature 300 to 600oC. The results showed that the suitable range of temperature for pyrolysis process of polyethylene was 385-425oC. Then, the influence of the parameters (temperature, reaction time and heating rate) on the pyrolysis was studied. The results indicated that the effect of reaction time was directly proportional to the yield of pyrolysis oil while the heating rate was inversely proportional. The maximum yield of pyrolysis oil (53.36%) was achieved under the optimum experiment conditions of temperature of 405oC, reaction time of 150 min and heating rate of 8oC/min. The heating value, viscosity and pH of pyrolysis oil were 43,438 kJ/kg, 2.014 cSt and 7.2, respectively. After that, the pyrolysis oil was distillated to purify and was separated to gasoline and diesel oil. The chemical composition of two fractions was similar to the commercial fuel oil. Therefore, plastic is an excellent feedstock for the production of fuel oil.


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Mueanmas, C., & Nikhom, R. (2022). Liquid Fuel Production from Polyethylene Plastic Waste by Pyrolysis Process. Rajamangala University of Technology Srivijaya Research Journal, 14(2), 405–417. Retrieved from
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Author Biographies

Chokchai Mueanmas, Energy Engineering Program, Faculty of Engineering, Thaksin University.

Energy Engineering Program, Faculty of Engineering, Thaksin University, Phatthalung Campus, 222 Moo 2, Baan Prao, Paphayom, Phatthalung, 93210, Thailand.

Ruamporn Nikhom, Energy Engineering Program, Faculty of Engineering, Thaksin University.

Energy Engineering Program, Faculty of Engineering, Thaksin University, Phatthalung Campus, 222 Moo 2, Baan Prao, Paphayom, Phatthalung, 93210, Thailand.


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