Process Optimization for Biodiesel Production from Corn Oil and Its Oxidative Stability

Table 2

Experimental matrix and experimental results.

Run	𝑋𝐶	𝑋𝑇	𝐶 (%)	𝑇 (°C)	𝑌(%)
1	−1	−1	34.4	0.86	94.40
2	+1	−1	55.6	0.86	98.25
3	−1	+1	34.4	1.18	96.50
4	+1	+1	55.6	1.18	99.48
5	0	0	45	1.02	98.25
6	0	0	45	1.02	97.85
7	0	0	45	1.02	98.30
8	0	0	45	1.02	98.40
9	−𝛼	0	30	1.02	97.50
10	+𝛼	0	60	1.02	98.70
11	0	−𝛼	45	0.80	96.9
12	0	+𝛼	45	1.24	96.4

Note: T: temperature; C: catalyst concentration; X: coded value; Y: biodiesel yield.