Abstract
Disposal of hazardous waste engine oil (WEO) has become the forefront of climate change. Hence, the potential conversion of WEO is essential and also recycled through different pyrolysis techniques for better assessment. In this work, diesel-like fuel extracted from electrical pyrolysis and microwave pyrolysis was used as an alternative fuel for the CI engine. The pyrolysis oil generated by both pyrolysis processes was found to be reliable. Nevertheless, the physicochemical characteristics of both pyrolysis oil deviated from each other. The performance, combustion and emission characteristics of different pyrolysis fuel have been investigated to identify the suitable alternative fuel for CI engine. The performance characteristics at rated load revealed that the brake thermal efficiency of electrical pyrolysis oil (EPO) and microwave pyrolysis oil (MPO) was 26% and 25%, respectively, which was 0.8% and 1.5% lower than diesel due to its higher viscosity. Emission characteristic shows that unburnt hydrocarbon emission of EPO and MPO was higher than diesel by 7% and 15%, respectively. Similarly, the filter smoke number was 3% and 10% higher than diesel. NO emission of EPO and MPO was lower than diesel by 27% and 13%, respectively. Also, exergy analysis represents MPO has higher potential when compared to EPO due to higher exergy efficiency.
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Abbreviations
- AC:
-
Activated carbon
- ASTM:
-
American Society for Testing and Materials
- BTE:
-
Brake thermal efficiency/%
- BMEP:
-
Brake mean effective pressure/bar
- BSEC:
-
Brake specific energy consumption/MJ kWh−1
- CA:
-
Crank angle/degree
- CI:
-
Compression ignition
- CO:
-
Carbon monoxide/vol%
- CO2 :
-
Carbon dioxide/vol%
- DI:
-
Direct injection
- EPO:
-
Electrical pyrolysis oil
- FEO:
-
Fresh engine oil
- FSN:
-
Filter smoke number
- GC–MS:
-
Gas chromatography and mass spectrometry
- HRR:
-
Heat release rate/J deg−1 CA−1
- MAP:
-
Microwave-assisted pyrolysis
- MPO:
-
Microwave pyrolysis oil
- NCG:
-
Non-condensable gases
- NO:
-
Nitric oxide/ppm
- NOx :
-
Oxides of nitrogen/ppm
- PAHs:
-
Polycyclic aromatic hydrocarbons
- ppm:
-
Parts per million
- PO:
-
Pyrolysis oil
- UBHC:
-
Unburnt hydrocarbon/ppm
- WEO:
-
Waste engine oil
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Acknowledgements
The authors would like to acknowledge the Department of science and technology—Science and Engineering Research Board (DST-SERB) for providing funding to carry out the research project (Project No. DST/SB/EMEQ-251). Also, the authors acknowledge the Director, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India, for supporting and extending the facility to the successful completion of this research work.
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Zahir Hussain, A., Santhoshkumar, A. & Ramanathan, A. Assessment of pyrolysis waste engine oil as an alternative fuel source for diesel engine. J Therm Anal Calorim 141, 2277–2293 (2020). https://doi.org/10.1007/s10973-020-09516-y
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DOI: https://doi.org/10.1007/s10973-020-09516-y