428747 Catalytic Pyrolysis of Used Tyres for Clean Fuel

Monday, November 9, 2015: 9:20 AM
250F (Salt Palace Convention Center)
Julius Ilawe Osayi, School of Chemical and Metallurgical engineering, University of the Witwatersrand, Johannesburg, Johannesburg, South Africa

Catalytic pyrolysis of used tyres for clean fuel

Julius I. Osayi.  1, Sunny Iyuke1, Diakanua N. Bavon1, Jaco Van Der Walt2 and Samuel E. Ogbeide3

1Nanotechnology Research Group, University of the Witwatersrand, Johannesburg, South Africa

2South Africa Nuclear Energy Corporation (NECSA), Pretoria, South Africa


3Department of Chemical Engineering, University of Benin, P.M.B 1154, Benin City, Nigeria


One of the current challenges following the rapid demand for automotive product is the large quantities of used tyres that end up as non-biodegradable solid waste. This is a major environmental and economic problem [1-3]. Therefore in this paper, the catalytic pyrolysis of used-tyres in a fixed bed quartz tube reactor was performed. Zeolite served as the catalyst and the effect of the catalyst/tyre ratio on the yield and composition of the obtained pyrolytic oil (biocrude) was investigated. The biocrude, produced an at operating temperature of 600 oC and heating rate of 15 oC/Min was characterized by FT-IR, 1H NMR and GC-MS followed by fractional distillation. The results of the boiling points showed that the liquid fractions are comparable to petroleum fuels and can serve as an alternative source of clean fuel [4-8] than the used tyre biocrude which has the set back of sulphur and tars.

Key words: Used tyres; Pyrolysis; Catalyst; Distillation and Fuels


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[2] Berrueco C., Esperanza E., Mastral F.J., Ceamanos J., and Garcia-Bacaicoa P (2005): pyrolysis of waste tyres in an atmospheric static-bed batch reactor: Analysis of the gases obtained. J.Anal. Appl. Pyrolysis 74, 245 – 253

[3] Islam M.R., Tushar M.S.H.K and Haniu H (2008). Production of Liquid fuels and chemicals from pyrolysis of Bangladeshi bicycle/rickshaw tire waste. J.Anal. Appl. Pyrolysis 82, 96-109

[4] Aydin H., and Ilkilic (2012). Optimization of fuel production from waste vehicle tires by pyrolysis and resembling to diesel fuel by various desulfurization methods. Fuel, 102, 605 – 612.

[5] Lopez G., Aguado R., Olazar M., Arabiourrutia M., and Bilbao J (2009): Kinetics of scrap tyre pyrolysis under vacuum conditions. Waste management, 29, 2649-2655

[6] Biofuels, Green Energy and Technology (2009): Doi: 10, 1007/978-1-84882-011-1-6

[7] Brammer J., and Bridgewater A.V (1999): A review of biomass drying technologies for thermal conversion. Renewable and sustainable Energy Reviews; 3(4): 243-289.

[8] Bhatia V.K., Mittal K.G., Mehrotra R.P., and Mehrotra M (1989): Hydrocarbon Fuels

        from biomass.  Biomass 4, 151-4

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