Biodiesel Production Using Supercritical Methanol with Carbon Dioxide and Acetic Acid

Table 1

Experimental plan by the L9 Taguchi design applied to biodiesel production.

L9	Factors
	𝐴	𝐵	𝐶	𝐷
Run	Temp.	Time	Methanol/oil	Acetic acid/oil
1	−1	−1	−1	−1
2	−1	0	0	0
3	−1	+1	+1	+1
4	0	−1	0	+1
5	0	0	+1	−1
6	0	+1	−1	0
7	+1	−1	+1	0
8	+1	0	−1	+1
9	+1	+1	0	−1