Table 2.
Experimental layout for acetoin batch study in coded form.
| Batch runs | Agitation (rpm) | Aeration rate (slpm) | Time (days) | pH |
|---|---|---|---|---|
| 1 | 1 | 3 | 3 | 3 |
| 2 | 2 | 2 | 3 | 1 |
| 3 | 3 | 2 | 1 | 3 |
| 4 | 2 | 3 | 1 | 2 |
| 5 | 2 | 1 | 2 | 3 |
| 6 | 1 | 1 | 1 | 1 |
| 7 | 1 | 2 | 2 | 2 |
| 8 | 3 | 1 | 3 | 2 |
| 9 | 3 | 3 | 2 | 1 |
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