The influence of plastic pyrolysis oil on fuel lubricity and diesel engine performance
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formation. HC emissions from both HDPE and PP were higher than diesel due to increased fuel supply, hindering chemical bond breakdown. Similarly, CO emissions increased for HDPE and PP due to insufficient time for complete combustion, with HDPE producing more CO due to its heavy composites and lower cetane index. Smoke emissions from both HDPE and PP surpassed diesel, attributed to lower oxygen and higher sulphur content, leading to increased sulphurate particulate matter formation, and lower fuel density referring to the high amount of fuel supplied to the engine.
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Liquid oils from pyrolysis of polypropylene and high-density polyethylene often have calorific values around 45-47 MJ/kg and flash points between 40 and 60°C, aligning more closely with diesel fuel specifications, although cetane numbers may vary and ash and water content are typically low.
“Liquid oils derived from the pyrolysis of polypropylene and high-density polyethylene often exhibit properties that align more closely with diesel fuel specifications, such as calorific values around 45-47 MJ/kg and flash points between 40 and 60 • C, although their cetane numbers may vary and they typically have low ash and water content [326,334].”
From Biofuels, E-Fuels, and Waste-Derived Fuels: Advances, Challenges, and Future Directions (2025) · cites this paper as [326]
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Experimental — accuracy not yet measuredWaste plastic oil can exhibit fuel properties comparable to conventional diesel or gasoline, depending significantly on plastic feedstock composition and pyrolysis process parameters.
“Waste plastic oil (WPO) can exhibit fuel properties comparable to conventional diesel or gasoline, depending significantly on the plastic feedstock composition and pyrolysis process parameters [326,327].”
From Biofuels, E-Fuels, and Waste-Derived Fuels: Advances, Challenges, and Future Directions (2025) · cites this paper as [326]
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- Authors
- Pumpuang, A., Klinkaew, N., Wathakit, K., Sukhom, A., & Sukjit, E.
- Affiliations
- Suranaree University of Technology (TH)
- Corresponding author
- Sukjit, Ekarong
- Venue
- RSC Advances
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2024
- Volume
- 14
- Issue
- 14
- Pages
- 10070-10087
- ISSN
- 2046-2069 (ISSN-L)
- PMC
- PMC10964204
- OpenAlex
- W4393193711
- Cited by
- 46
- References
- 31
- Citations by year
- 2026: 22 · 2025: 21 · 2024: 3
- FWCI
- 6.43
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- RSC Advances (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- Suranaree University of Technology
- Topics
- Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Advanced Combustion Engine Technologies
- Physical Sciences › Engineering › Biomedical Engineering › Biodiesel Production and Applications
- Physical Sciences › Engineering › Mechanical Engineering › Lubricants and Their Additives
- Keywords
- plastic pyrolysis oil, fuel lubricity, diesel engine performance, high-density polyethylene, polypropylene, hydrocarbon emissions, carbon monoxide emissions, smoke emissions, sulfur content, cetane index, particulate matter
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