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

Table 6

ANOVA for response surface quadratic model for thermal pyrolysis.

Source	Sum of squares	df	Mean square	value	value
Model	738.65	9	82.07	1.331+05	<0.0001	Significant
X1-reaction temperature	281.53	1	281.53	4.567+05	<0.0001
X2-reaction time	223.35	1	223.35	3.624+05	<0.0001
X3-particle size	123.96	1	123.96	2.011+05	<0.0001
X1.X2	2.53	1	2.53	4112.66	<0.0001
X1.X3	0.2400	1	0.2400	389.36	<0.0001
X2.X3	1.50	1	1.50	2433.53	<0.0001
(X1)^2	58.96	1	58.96	95654.80	<0.0001
(X2)^2	55.28	1	55.28	89690.31	<0.0001
(X3)^2	2.26	1	2.26	3668.04	<0.0001
Residual	0.0216	35	0.0006
Lack of fit	0.0016	5	0.0003	0.4721	0.7940	Not significant
Pure error	0.0200	30	0.0007
Cor Total	738.67	44