Table 5 Central composite design (CCD) matrix of three independent variables for H 2 production in actual values with experimental results of WS by employing Rhodobacter capsulatus -PK (SS-8) in the presence of tungsten lamp with light intensity of 120-150Â W/m 2
From: Photo-biohydrogen production potential of Rhodobacter capsulatus- PK from wheat straw
Run No | Variables | Response | Yield | ||
|---|---|---|---|---|---|
| Â | X1 | X2 | X3 | Y hydrogen production (ml) | Mole of H2/mole of substrate |
1 | -1.000 | -1.000 | -1.000 | 528 | 0.98 |
2 | -1.682 | 0.000 | 0.000 | 587 | 1.09 |
3 | 1.000 | -1.000 | -1.000 | 597 | 1.11 |
4 | 0.000 | 0.000 | 0.000 | 709 | 1.32 |
5 | 1.682 | 0.000 | 0.000 | 603 | 1.12 |
6 | 0.000 | 0.000 | 0.000 | 709 | 1.32 |
7 | 0.000 | 0.000 | 0.000 | 712 | 1.32 |
8 | 0.000 | 0.000 | 0.000 | 711 | 1.32 |
9 | 1.000 | -1.000 | 1.000 | 561 | 1.04 |
10 | 0.000 | 1.682 | 0.000 | 598 | 1.11 |
11 | 0.000 | 0.000 | 1.682 | 551 | 1.02 |
12 | 0.000 | 0.000 | -1.682 | 559 | 1.04 |
13 | 0.000 | 0.000 | 0.000 | 709 | 1.32 |
14 | 0.000 | -1.682 | 0.000 | 554 | 1.03 |
15 | 0.000 | 0.000 | 0.000 | 709 | 1.32 |
16 | 1.000 | 1.000 | 1.000 | 542 | 1.01 |
17 | -1.000 | 1.000 | -1.000 | 568 | 1.06 |
18 | -1.000 | 1.000 | 1.000 | 572 | 1.06 |
19 | 1.000 | 1.000 | -1.000 | 540 | 1.00 |
20 | -1.000 | -1.000 | 1.000 | 527 | 0.98 |