Active Razor Shell CaO Catalyst Synthesis for Jatropha Methyl Ester Production via Optimized Two-Step Transesterification

Table 4

Analysis of variance for optimal JME.

Source	DF	Sum of squares	Adj. sum of squares	Adj. mean of squares
Blocks	1	99.90	94.69	94.694	14.22	0.0030
Regression	20	1575.49	1575.49	78.775	11.83	<0.0001
Linear	5	632.77	393.59	78.717	11.82	<0.0001
	1	11.15	0.41	0.405	0.06	0.8100
	1	328.66	211.45	211.452	31.75	<0.0001
	1	101.68	92.8	92.800	13.94	0.0030
	1	187.28	114.13	114.130	17.14	0.0020
	1	4.00	5.02	5.021	0.75	0.4040
Square	5	902.29	914.24	182.849	27.46	<0.0001
	1	79.02	227.41	227.414	34.15	<0.0001
	1	223.77	351.83	351.831	52.83	<0.0001
	1	301.16	371.36	371.356	55.77	<0.0001
	1	227.14	256.61	256.608	38.53	<0.0001
	1	71.19	78.12	78.117	11.73	0.0060
Interaction	10	40.43	40.43	4.043	0.61	0.7800
	1	6.70	13.55	13.552	2.04	0.1810
	1	0.02	0.23	0.231	0.03	0.8560
	1	3.35	0.65	0.647	0.1	0.7610
	1	0.02	0.04	0.035	0.01	0.9430
	1	3.01	3.01	3.011	0.45	0.5150
	1	9.27	14.18	14.179	2.13	0.1720
	1	0.48	0.38	0.383	0.06	0.8150
	1	2.08	1.84	1.841	0.28	0.6090
	1	12.72	12.72	12.718	1.91	0.1940
	1	2.77	2.77	2.766	0.42	0.5320
Residual error	11	73.25	73.25	6.659
Lack-of-fit	7	73.22	73.22	10.460	1394.68	<0.0001
Pure error	4	0.03	0.03	0.008
Total	32	1748.64

= 95.81%, = 1.97%, and = 87.81%.