Table 7. RSM-CCD for Transesterification.
| coded |
||||||
|---|---|---|---|---|---|---|
| factor | name | units | minimum | maximum | low | high |
| A | CH3OH:Oil | 3.00 | 18.00 | –1 ↔ 3.00 | +1 ↔ 18.00 | |
| B | time | h | 1.0000 | 6 | –1 ↔ 1.00 | +1 ↔ 6.00 |
| C | temperature | °C | 40.00 | 65.00 | –1 ↔ 40.00 | +1 ↔ 65.00 |
| D | catalyst dose | % | 2.0000 | 7.00 | –1 ↔ 1.00 | +1 ↔ 7.00 |