Table 2 Optimization of hexavalent chromium ion bioreduction by Pseudomonas stutzeri L1 and Acinetobacter baumannii L2: analysis of variance
From: Bioreduction of hexavalent chromium by Pseudomonas stutzeri L1 and Acinetobacter baumannii L2
Treatment | Pseudomonas stutzeri L1 | Acinetobacter baumannii L2 | ||||
|---|---|---|---|---|---|---|
F value | df | P | F value | df | P | |
pH 5 | 389, 78 | 5 | <0.01 | 590, 28 | 5 | <0.01 |
pH 6 | 142, 40 | 5 | <0.01 | 499, 78 | 5 | <0.01 |
pH 7 | 110, 62 | 5 | <0.01 | 224, 25 | 5 | <0.01 |
pH 8 | 169, 71 | 5 | <0.01 | 628, 41 | 5 | <0.01 |
pH 9 | 441, 71 | 5 | <0.01 | 1232, 46 | 5 | <0.01 |
pH 10 | 58, 91 | 5 | <0.01 | 1579, 66 | 5 | <0.01 |
Temperature | 60, 87 | 2 | <0.01 | 16, 65 | 2 | <0.01 |
Cr(VI) 100 mg L−1 | 110, 62 | 5 | <0.01 | 261, 22 | 5 | <0.01 |
Cr(VI) 200 mg L−1 | 87, 48 | 5 | <0.01 | 295, 81 | 5 | <0.01 |
Cr(VI) 300 mg L−1 | 542, 01 | 5 | <0.01 | 176, 03 | 5 | <0.01 |
Cr(VI) 400 mg L−1 | 60, 90 | 5 | <0.01 | 127, 49 | 5 | <0.01 |
Cr(VI) 500 mg L−1 | 155, 23 | 5 | <0.01 | 116, 50 | 5 | <0.01 |
Cr(VI) 1000 mg L−1 | 78, 80 | 5 | <0.01 | 141, 60 | 5 | <0.01 |