[Retracted] Kinetics of Sludge Superheated Steam Drying and Optimization of Process Parameters

Table 11

Experimental analysis of variance table on relative unit consumption energy.

Item	Quadratic sum	DOF	RMSE	F value	value
Model	79876.34	9	8875.15	9.73	0.0002
X1	69.93	1	69.93	0.0077	0.7862
X2	57273.25	1	57273.25	62.81	<0.0001
X3	1807.47	1	1807.47	1.98	0.1826
	2959.61	1	2959.61	3.25	0.0948
	16066.41	1	16066.41	17.62	0.0010
	1119.45	1	1119.45	1.23	0.2879
X1 X2	57.17	1	57.17	0.063	0.8062
X1 X3	26.57	1	26.57	0.029	0.8671
X2 X3	672.53	1	672.53	0.74	0.4060
Remainder	11853.30	13	911.79
Lack of fit	1819.81	5	363.96	0.29	0.9055
Error	10033.49	8	1254.19
Sum	91729.65	22
R ^2 = 0.8708