Methodological Approach for Optimizing Production of Oxygen by Adsorption of Nitrogen from Air using Zeolite Li-LSX

Table 4

Analysis of variance for production of oxygen.

Source	DF	SS	Adj SS	Adj MS	F-value	-value
Model	9	2133.15	2133.15	237.02	50.67	0.001
Linear	3	1956.21	1983.91	661.30	141.37	0.001
X1	1	1233.80	1268.70	1268.70	271.21	0.001
X2	1	507.64	514.24	514.24	109.93	0.001
X3	1	214.76	200.97	200.97	42.96	0.001
Square	3	79.90	79.90	26.63	5.69	0.045
X1 X1	1	14.91	9.50	9.50	2.03	0.214
X2 X2	1	5.43	8.50	8.50	1.82	0.236
X3 X3	1	59.56	59.56	59.56	12.73	0.016
2-Way interaction	3	97.03	97.03	32.34	6.91	0.031
X1 X2	1	44.80	44.80	44.80	9.58	0.027
X1 X3	1	35.82	35.82	35.82	7.66	0.039
X2 X3	1	16.41	16.41	16.41	3.51	0.120
Error	5	23.39	23.39	4.68
Lack-of-Fit	3	23.39	23.39	7.80
Pure error	2	0.00	0.00	0.00
Total	14	2156.54
Model summary		S	R^2	R^2 (Adj.)	Press	R^2 (pred.)
		2.16285	98.92%	96.96%	389.110	81.96%