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Saudi Journal of Engineering and Technology (SJEAT)
Volume-6 | Issue-07 | 169-177
Original Research Article
Characterization of Char from Waste Tyre Pyrolysis
Yaru, S. S, Satope, P. O, Akinola, A. O
Published : July 30, 2021
DOI : 10.36348/sjet.2021.v06i07.004
Abstract
The characterization of char from waste tyre pyrolysis is evaluated in this work. Disused tyres retrieved from vehicle users and dump hills in Akure and its environment in South West Nigeria were pyrolysed in a refurbished 17.4 litre capacity fixed-bed batch thermochemical reactor. The waste tyres were cut into sample sizes of 20 mm × 30 mm manually and then weighed into various portions of 1kg each. 1kg mass of the washed waste tyres was pyrolysed in each batch of pyrolysis experiment to obtain char at different pyrolysis temperatures of 250oC, 350oC, 450oC, and 600oC respectively. Proximate and ultimate analyses of the char resulting from the pyrolysis were carried out. The pyrolysis process produced char with an average of 83.30% carbon composition 5.45% hydrogen, 0.52% nitrogen, 1.17% sulphur and 1.90% oxygen composition. The analysis of percentage composition of the raw scrap tyre samples gave 79.86% for carbon, 7.35% hydrogen, 0.39% nitrogen, 1.57% for sulphur and 6.50% for oxygen. The ultimate analysis of the char resulting from pyrolysis gave an average value of 38.83 kJ/kg for the heating value and 470.00 kg/m3 for specific gravity. The average fixed carbon content was 33.38% while the volatile matters gave an average of 58.40%. The ultimate analysis of the raw tyre samples gave values of 36.10 kJ/kg for the heating value and 343.00 kg/m3 for specific gravity.
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