Thermal Pyrolysis of Used Tyres to Produce Liquid Fuel: Process Optimization and How It Compares to Microwave Pyrolysis

Table 9

GC-MS analysis of thermal pyrolysis TPO and its comparison to that of published microwave pyrolysis [5].

Components	Molecular formula	Microwave pyrolysis [5]		Thermal pyrolysis
		Retention time (RT) (mins)	Peak area %	Retention time (RT) (mins)	Peak area %
D-limonene	C10H16	13.46	20.23	13.45	14.55
Toluene	C7H8	7.03	10.65	7.02	7.45
m-Xylene	C8H10	8.82	7.31	8.83	6.82
1-Methylnaphthalene	C11H10	27.09	5.8	27.08	4.45
Naphthalene	C10H8	15.59	5.42	15.6	5.4
Estradiol, 3-deoxy	C18H24O	28.88	3.5	28.88	2.5
3,4-Dihydro-1-methylnaphthalene	C11H12	15.72	2.74	15.72	3.2
Naphthalene,2,7 –dimethyl	C12H12	25.09	2.5	25.1	2.32
Naphthalene 1,7-dimethyl	C12H12	20	1.96	20.01	2.05
o-Xylene	C8H10	11.33	1.4	11.33	1.45
Naphthalene, 1,2-dihydro	C10H10	19.44	1.2	19.45	1.75
Cyclohexane, 1-methyl-5-(1-methylethenyl)-(R)	C10H16	12.64	1.1	12.63	1
Benzene	C6H6	5.62	0.92	5.61	1
Ethylenzene	C8H8	4.94	0.6	4.9	0.68
Fluoranthene	C16H10	30.33	0.45	30.32	0.62
2,4-Dimethyl-quinolin	C11H11N	7.96	0.41	—	Not detected