An Investigation of Biodiesel Production from Wastes of Seafood Restaurants

Table 3

Experimental design matrix with experimental and predicted values of biodiesel yield.

Run number	Factors/levels								Biodiesel yield (wt%)
	M : O (Molar ratio)		Catalyst (wt%)		Time (min)		Mixing rate (rpm)		CaO from mollusks shells		CaO from crabs shells
	Levels	Actual; value	Levels	Actual; value	Levels	Actual; value	Levels	Actual value	Experimental	Predicted	Experimental	Predicted
1	3	12 : 1	3	9	3	120	2	300	79.80	79.90	85	85.60
2	1	6 : 1	3	9	3	120	1	200	85.10	85.10	74	74.00
3	2	9 : 1	3	9	2	60	3	400	87.00	87.00	82.5	82.50
4	1	6 : 1	3	9	1	30	2	300	78.40	78.40	85.5	85.50
5	1	6 : 1	2	6	3	120	3	400	79.20	79.20	78.5	78.50
6	2	9 : 1	3	9	1	30	3	400	76.00	76.00	88	88.00
7	2	9 : 1	2	6	1	30	2	300	71.80	71.80	92	92.00
8	3	12 : 1	1	3	1	30	1	200	83.40	83.40	91	90.85
9	1	6 : 1	1	3	1	30	1	200	91.50	91.75	93	93.50
10	1	6 : 1	1	3	2	60	2	300	88.00	87.90	92.5	92.90
11	2	9 : 1	2	6	3	120	1	200	73.80	73.80	80	80.00
12	2	9 : 1	1	3	3	120	2	300	78.40	78.40	93	93.00
13	3	12 : 1	1	3	3	120	3	400	78.50	78.65	96	96.50
14	3	12 : 1	2	6	1	30	3	400	78.40	78.40	91	91.00
15	3	12 : 1	2	6	2	60	1	200	74.20	74.35	89	89.50
16	3	12 : 1	3	9	3	120	2	300	80.00	79.90	86.2	85.60
17	1	6 : 1	1	3	1	30	1	200	92.00	91.75	94	93.50
18	3	12 : 1	2	6	2	60	1	200	74.50	74.35	90	89.50
19	3	12 : 1	1	3	3	120	3	400	78.80	78.65	97	96.50
20	1	6 : 1	1	3	2	60	2	300	87.80	87.90	93.3	92.90