Rubber waste tyre: Effect of temperature on pyrolysis char yield and properties
HO Tze Jing, RAMLI Raihan Mahirah, MOHD HASHIM Muhammad Firdaus, SAIDIN Khairul Afizan
Abstract. Waste tyre pyrolysis is a viable technology to convert tyres into useful products such as pyrolysis oil, fuel and gas. Most of the research focus on investigating the effect of pyrolysis operating parameters on the oil product. With the increasing applications of the solid char produced, it is found that no detailed investigation on the effect of pyrolysis temperature on the char yield and properties. Thus, this project is aimed to determine the effect of pyrolysis temperature on tyre- derived char yield and properties. A total of three char samples were produced from rubber crumb, namely Char400, Char550 and Char700, corresponding to their pyrolysis temperature at 400°C, 550°C and 700°C respectively. Rubber crumb and these 3 char samples were sent to Fourier Transform Infrared Spectroscopy (FTIR), Elemental analysis of carbon, hydrogen, nitrogen and sulphur (CHNS), Scanning Electron Microscopy (SEM) and Brunauer-Emmett-Teller (BET) analysis for characterization purposes. It was found that increasing temperature from 400°C to 700°C led to significant char yield reduction from 76% to 36.25%. In terms of composition, Char400 has additional alkane and phenol functional groups indicating the main constituents in rubber crumb did not decompose completely at low temperatures. Furthermore, char produced at higher temperatures has lower carbon content, higher sulphur content, higher specific surface area, lower average pore width and more structured surface morphology. Overall, temperature affects char yield and properties significantly.
Keywords
Waste Tyre Pyrolysis, Pyrolysis, Temperature, Char Yield, Char Properties
Published online 4/25/2025, 9 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: HO Tze Jing, RAMLI Raihan Mahirah, MOHD HASHIM Muhammad Firdaus, SAIDIN Khairul Afizan, Rubber waste tyre: Effect of temperature on pyrolysis char yield and properties, Materials Research Proceedings, Vol. 53, pp 155-163, 2025
DOI: https://doi.org/10.21741/9781644903575-15
The article was published as article 15 of the book Decarbonization Technology
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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