Tables at a glance

Table 1

Table 2a

Table 2b

Table 2c

Table 3

Figures at a glance

Figure 1

Figure 2

Table 1

			Coded Factors Levels
Variable	Symbol	-1	0	+1
TE (min)	X₁	40	50	60
VS (mi)	X ₂	200	250	300
WS (g)	X ₃	50	55	60

Table 1: Factors and their levels for Box-Behnken

TE = Time of extraction, VS=Volume of solvent, WS = Weight of sample

Table 2

X₁ (min)	X₂ (mL)	X₃ (g)	OY %(wt./wt.)	POY%(wt./wt.)	Residual
-1.000	-1.000	0.000	42.91	42.91	0.0025
0.000	1.000	1.000	44.95	44.95	-0.0013
1.000	1.000	0.000	40.83	40.83	-0.0013
0.000	-1.000	1.000	42.46	42.46	0.0012
0.000	1.000	-1.000	39.72	39.72	0.0012
0.000	0.000	0.000	42.00	42.08	-0.0800
0.000	0.000	0.000	42.10	42.08	0.0200
1.000	0.000	-1.000	42.10	42.08	0.0200
0.000	0.000	0.000	49.04	49.04	-0.0013
0.000	-1.000	-1.000	42.00	42.08	-0.0800
-1.000	0.000	1.000	37.16	37.16	-0.0025
-1.000	0.000	-1.000	42.47	42.47	0.0012
1.000	0.000	1.000	42.20	42.08	0.1200
1.000	-1.000	0.000	41.67	41.67	0.0012
0.000	0.000	0.000	40.03	40.03	0.0000
-1.000	1.000	0.000	42.98	42.98	-0.0012
0.000	0.000	0.000	43.35	43.35	0.0000

Table 2a: Experimental oil yield (%) and predicted values

POY = Predicted oil yield, OY = Oil yield

Table 2b

Source	Sum of Square	df	Mean Value	Prob>F	F-value
Model	95.40	9	10.60	2647.50	< 0.0001
X ₁	2.94	1	2.94	734.42	< 0.0001
X ₂	8.41	1	8.41	2099.38	< 0.0001
X ₃	41.09	1	41.09	10262.62	< 0.0001
X₁X ₂	0.0100	1	0.0100	2.50	0.1580
X₁X ₃	2.74	1	2.74	684.15	< 0.0001
X₂X ₃	4.16	1	4.16	1039.47	< 0.0001
X ₁²	22.74	1	22.74	5678.94	< 0.0001
X ₂²	10.03	1	10.03	2506.36	< 0.0001
X₃²	5.15	1	5.15	1287.05	< 0.0001
Residual	0.0280	7	0.0040
Lack of Fit	0.0000	3	8.333E-06	0.0012	0.9999
Pure Error	0.0280	4	0.0070
Cor Total	95.42	16

Table 2b: Significance for every regression coecient

Table 2c

Factor	Coefficient of Estimate	df	Standard Erro	95% CI Low	95% CI High	VIF
Intercept	42.08	1	0.0283	42.01	42.15	-
X₁	-0.6062	1	0.0224	-0.6591	-0.5534	1.0000
X₂	1.02	1	0.0224	0.9721	1.08	1.0000
X₃	-2.27	1	0.0224	-2.32	-2.21	1.0000
X	-0.0500	1	0.0316	-0.1248	0.0248	1.0000
X	-0.8275	1	0.0316	-0.9023	-0.7527	1.0000
X	-1.02	1	0.0316	-1.09	-0.9452	1.0000
X₁X₂	-2.32	1	0.0308	-2.40	-2.25	1.01
X₁X₃	1.54	1	0.0308	1.47	1.62	1.01
X₂X₃	1.11	1	0.0308	1.03	1.18	1.01
Std. Dev			0.0633		R-Squared	0.9997
Mean			42.23		Adj R-Squared	0.9993
C.V.			0.1498		Pred R-Squared	0.9995
					Adeq Precision	244.7775

Table 2c: Analysis coefficients in Terms of Coded Factors

Table 3

Parameters

Values

PhysicalProperties

Moisture content %

0.16

Specific gravity @ 60^o C

0.89

Viscosity @34.2^o C (N.s/m ) ²

30.0

Density (kg/m )³ @60^o C

915.0

Refractive index @60^o C

1.45

ChemicalProperties

Free fatty acid

0.3

Acid value (mg/KOH/g)

0.6

Saponification (mg/KOH/g)

185.7

Iodine value (g/100g)

39.0

Peroxide value (meq O₂ /kg oil)

8.6

Table 3: Physicochemical Properties of Oil

FIGURE 1

Figure 1: Predicted Vs. Experimental oil yield

FIGURE 2

Figure 2: Contour and three dimensional plots