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Published VersionCC BY V4.0, Open Access
Journal article
Physicochemical properties of pyrolytic char and oil from mixed tyre using batch pyrolysis process
Energy Conversion and Management: X, Vol.26, pp.1-12
2025
Abstract
End-of-life tyres (EOLT) has several adverse impacts to the environment, so it’s disposal to landfill is not wise. Rather, it can be converted to energy products through thermo-chemical conversion processes. One of the thermo-chemical conversion processes is called pyrolysis. A batch pyrolysis experiment was conducted for EOLT using a 20L pyrolysis reactor at 540 °C temperature with atmospheric pressure for 3 h to produce char, oil and syngas. Feedstock was mixed tyres, which is a mixture of light, medium and heavy tyre at 1:1:1 ratio. The focus of the study was to investigate the physicochemical properties of oil and char produced from pyrolysis. Thermogravimetric and FTIR analysis was performed to characterise oil. The study found that pyrolysis reactions started at 280 °C and completed at 515 °C with about 40 % char/residue. The properties of the mixed tyre pyrolytic oil (MixTPO), such as higher heating value (HHV), density, flash point, etc, were analysed and compared with petroleum fuel such as diesel and kerosene. Although MixTPO had a high calorific value of 42.00 MJ/kg, other properties such as viscosity, flash point, water content do not allow its direct use as an engine fuel. Physical properties (Surface area) and chemical properties (elemental analysis, ash content and composition) of the pyrolytic char were examined. It was found from the Mmcroanalytical tests that tyre pyrolytic char (TPC) contains 70 %–90 % pure carbon with some impurities like oxygen, zinc, and sulphur. It’s BET surface area is low (15.89 m2/kg) which makes it unsuitable to use as an absorbent, requiring further microstructural improvement. The findings signify that though waste tyre can be converted into various valuable energy products (oil, char and syngas) through pyrolysis which has high commercial value, liquid oil needs further treatment to use as an automobile fuel and char needs microstructural improvement to use as an absorbent. Further study is recommended.
Details
- Title
- Physicochemical properties of pyrolytic char and oil from mixed tyre using batch pyrolysis process
- Authors
- N.H. Zerin - Central Queensland UniversityM.G. Rasul (Corresponding Author) - Central Queensland UniversityM.I. Jahirul - Central Queensland UniversityA.S.M. Sayem - Central Queensland UniversityRezwanul Haque - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
- Publication details
- Energy Conversion and Management: X, Vol.26, pp.1-12
- Publisher
- Elsevier Ltd
- Date published
- 2025
- DOI
- 10.1016/j.ecmx.2025.100941
- ISSN
- 2590-1745
- Copyright note
- © 2025 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
- Data Availability
- Data will be made available on request.
- Grant note
- The authors would like to thank CQUniversity, Australia for the financial support provided to Nusrat Hossain Zerin through elevate scholarship. The authors also acknowledge the organisations for their financial support to this study through 2021 FAPEx Grant for project “Technology development to process Municipal Solid Waste (MSW) as a char for producing activated carbon” and Advance Queensland Industry Research Fellowship project “Cheaper greener Queensland: Optimising renewable fuel production from mixed waste” (project no: RSH/6017).
- Organisation Unit
- School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 991113047002621
- Output Type
- Journal article
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