Production of Fuel Oil from Waste Low Density Polyethylene and its Blends on Engine Performance Characteristics


  • Girish N. Desai Research scholar, Department of Chemical Engineering, RV College of Engineering, India
  • Jagadish H. Patil Associate Professor, Department of Chemical Engineering, RV College of Engineering, India
  • Umesh B. Deshannavar Department of Chemical Engineering, Tatyasaheb Kore Institute of Engineering and Technology, India
  • Prasad G. Hegde Department of Chemical Engineering, KLE Dr. M. S. Sheshgiri College of Engineering & Technology, India



Pyrolysis, fuel oil, Plastic waste, LDPE, Sustainable development.


This research paper focuses on converting waste low density polyethylene (LDPE) plastic to fuel oil using thermal degradation through a pyrolysis reactor. The process involves heating the LDPE plastic in the reactor with purging of nitrogen gas to maintain an inert atmosphere in the reactor, with a retention time of 2-3 hours until it melts and forms vapour, which is then condensed in a container. The resulting fuel oil is analyzed for its physical properties and compared with standard diesel. The fuel oil produced has properties that agree with the standard, including a carbon residue of 0.01, density of 785.1 kg/m3, flash point of 68oC, gross calorific value of 44,141 kJ/kg, kinematic viscosity of 2.18 cSt, pour point of -50oC, and sulfur content of 32 ppm. The fuel oil is then subjected to engine performance and emission tests in a CI Engine by blending it with diesel. The results show that a diesel engine can run on a blend of 50% fuel oil and 50% diesel fuel, but the engine vibrates when the fuel oil content exceeds 50%. The oil-diesel blend has lower brake-specific fuel consumption and higher exhaust gas temperature than diesel fuel, but it also produces higher NOx, CO, HC, and smoke emissions than diesel. Overall, the blend has significant advantages over conventional diesel fuel in terms of fuel efficiency, but it also has some drawbacks in terms of emissions.


Bhattacharya, R., et al., Challenges and opportunities: plastic waste management in India. 2018.

Yadav, P. and S. Samadder, Assessment of applicability index for better management of municipal solid waste: a case study of Dhanbad, India. Environmental technology, 2018. 39(12): p. 1481-1496.

Khoo, H.H., LCA of plastic waste recovery into recycled materials, energy and fuels in Singapore. Resources, Conservation and Recycling, 2019. 145: p. 67-77.

Aryan, Y., P. Yadav, and S.R. Samadder, Life Cycle Assessment of the existing and proposed plastic waste management options in India: A case study. Journal of Cleaner Production, 2019. 211: p. 1268-1283.

Bhatt, K.P., et al., A critical review on solid waste treatment using plasma pyrolysis technology. Chemical Engineering and Processing-Process Intensification, 2022. 177: p. 108989.

Chhabra, V., Y. Shastri, and S. Bhattacharya, Kinetics of pyrolysis of mixed municipal solid waste-a review. Procedia environmental sciences, 2016. 35: p. 513-527.

Panepinto, D., et al., Environmental performances and energy efficiency for MSW gasification treatment. Waste and Biomass Valorization, 2015. 6: p. 123-135.

Kameel, N.I.A., et al., Influence of reaction parameters on thermal liquefaction of plastic wastes into oil: A review. Energy Conversion and Management: X, 2022. 14: p. 100196.

Rudovica, V., et al., Valorization of marine waste: use of industrial by-products and beach wrack towards the production of high added-value products. Frontiers in Marine Science, 2021. 8: p. 723333.

Liu, Y., et al., Effective depolymerization of polyethylene plastic wastes under hydrothermal and solvothermal liquefaction conditions. Chemical Engineering Journal, 2022. 446: p. 137238.

Utami, M., K. Wijaya, and W. Trisunaryanti, Pt-promoted sulfated zirconia as catalyst for hydrocracking of LDPE plastic waste into liquid fuels. Materials Chemistry and Physics, 2018. 213: p. 548-555.

Yusuf, A.A., et al., Effects of hybrid nanoparticle additives in n-butanol/waste plastic oil/diesel blends on combustion, particulate and gaseous emissions from diesel engine evaluated with entropy-weighted PROMETHEE II and TOPSIS: Environmental and health risks of plastic waste. Energy Conversion and Management, 2022. 264: p. 115758.

Arunkumar, B. and C. Nataraj, Conversion of waste plastic into fuel oil in the presence of bentonite as a catalyst. Int Res J Eng Technol, 2017. 4(9): p. 114-119.

Mumtaz, H., et al., Hydrothermal treatment of plastic waste within a circular economy perspective. Sustainable Chemistry and Pharmacy, 2023. 32: p. 100991.

Cleetus, C., S. Thomas, and S. Varghese, Synthesis of petroleum-based fuel from waste plastics and performance analysis in a CI engine. Journal of Energy, 2013. 2013.

Wongkhorsub, C. and N. Chindaprasert, A comparison of the use of pyrolysis oils in diesel engine. Energy and Power Engineering, 2013. 5(04): p. 350.

Baskaran, R. and P.S. Kumar, Evaluation on performance of CI engine with waste plastic oil-diesel blends as alternative fuel. Int. J. Res. Appl. Sci. Eng. Technol, 2015. 3: p. 642-646.

Rameshbabu, A., et al., Performance, combustion and emission characteristics of a single-cylinder constant speed compression ignition engine using soybean methyl esters. International Journal of Ambient Energy, 2020. 41(4): p. 457-461.

Mukherjee, M.K. and P.C. Thamotharan, Performance and emission test of several blends of waste plastic oil with diesel and ethanol on four stroke twin cylinder diesel engine. Civil Eng, 2014. 11: p. 2278-1684.

Khan, M., et al., Pyrolytic waste plastic oil and its diesel blend: fuel characterization. Journal of environmental and public health, 2016. 2016.

Alawa, B. and S. Chakma, Investigation in compression ignition engine performance using alternative fuels produced from waste packaging materials. Resources, Conservation & Recycling Advances, 2022. 14: p. 200075.

Das, A.K., T. Mohapatra, and A.K. Panda, Multiple response optimization for performance and emission of a CI engine using waste plastic oil and biogas in dual fuel mode operation. Sustainable Energy Technologies and Assessments, 2023. 57: p. 103170.

Mohan, R.K., et al., Energy recovery from waste plastic oils as an alternative fuel source and comparative assessment of engine characteristics at varying fuel injection timings. Energy, 2023. 275: p. 127374.

Mustayen, A., et al., Impact of waste-plastic-derived diesel on the performance and emission characteristics of a diesel engine under low load conditions. Energy Conversion and Management, 2023. 283: p. 116936.

Sundar, S.P., et al., Experimental and feasibility study on nano blended waste plastic oil based diesel engine at various injection pressure: A value addition for disposed plastic food containers. Fuel Processing Technology, 2023. 242: p. 107627.

Murugan, S., M. Ramaswamy, and G. Nagarajan, Tyre pyrolysis oil as an alternate fuel for diesel engines. 2005, SAE Technical Paper.

Soloiu, A., et al. The investigation of a new diesel produced from waste plastics. in ISME. 2000.

Agarwal, A.K., Biofuels (alcohols and biodiesel) applications as fuels for internal combustion engines. Progress in energy and combustion science, 2007. 33(3): p. 233-271.

Nagarajan, G., A. Rao, and S. Renganarayanan, Emission and performance characteristics of neat ethanol fuelled Dl diesel engine. International journal of ambient energy, 2002. 23(3): p. 149-158.

Kidoguchi, Y., et al., Effects of fuel cetane number and aromatics on combustion process and emissions of a direct-injection diesel engine. JSAE review, 2000. 21(4): p. 469-475.

Murugan, S., M. Ramaswamy, and G. Nagarajan. Running a diesel engine with higher concentration TPO-DF. in Proceedings of the National conference of research scholars in mechanical engineering, IIT Kanpur. 2007.

Xiong, Q., et al., Major trends and roadblocks in CFD-aided process intensification of biomass pyrolysis. Chemical Engineering and Processing-Process Intensification, 2018. 127: p. 206-212.

Celıkten, I., An experimental investigation of the effect of the injection pressure on engine performance and exhaust emission in indirect injection diesel engines. Applied Thermal Engineering, 2003. 23(16): p. 2051-2060.

Li, W., et al., Combustion characteristics of a compression ignition engine fuelled with diesel—ethanol blends. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2008. 222(2): p. 265-274.

Mirzajanzadeh, M., et al., A novel soluble nano-catalysts in diesel–biodiesel fuel blends to improve diesel engines performance and reduce exhaust emissions. Fuel, 2015. 139: p. 374-382.

Patil, K.R., Experimental Investigation into the Combustion, Performance, and Emission Characteristics of Oxygenated DEE and Ethanol Blending with KOME Biodiesel Fuelled CI Engine. Journal of Renewable Energy and Environment, 2023. 10(2): p. 1-8.

Zhao, B., et al., Processing and utilization of the solid plastic waste oil as the sustainable substitute for fossil fuel for the CI engine from microwave assisted pyrolysis process. Fuel, 2022. 327: p. 125191.


How to Cite

Girish N. Desai, Jagadish H. Patil, Umesh B. Deshannavar, and Prasad G. Hegde. 2024. “Production of Fuel Oil from Waste Low Density Polyethylene and Its Blends on Engine Performance Characteristics”. Metallurgical and Materials Engineering 30 (2):57-70.