Table 5 Effect of humic acid experiment
Case | Experiment conditions | CFe(II) (mg/L) | CFe(III) (mg/L) | CCr(VI) (mg/L) | CCr(III) (mg/L) | HA (mg/L) | DO |
|---|---|---|---|---|---|---|---|
1 | HA + Fe(II) | 20 | 0 | 0 | 0 | 40 | Hyperoxia |
2 | 20 | 0 | 0 | 0 | 40 | Anoxic | |
3 | HA + Fe(III) | 0 | 12 | 0 | 0 | 40 | Hyperoxia |
4 | 0 | 12 | 0 | 0 | 40 | Anoxic | |
5 | HA + Cr(III) | 0 | 0 | 0 | 12 | 40 | Hyperoxia |
6 | 0 | 0 | 0 | 12 | 40 | Anoxic | |
7 | HA + Cr(VI) | 0 | 0 | 20 | 0 | 40 | Hyperoxia |
8 | 0 | 0 | 20 | 0 | 40 | Anoxic | |
9 | HA = 0 mg/L | 20 | 0 | 20 | 0 | 0 | Hyperoxia |
10 | 20 | 0 | 20 | 0 | 0 | Anoxic | |
11 | HA = 15 mg/L | 20 | 0 | 20 | 0 | 15 | Hyperoxia |
12 | 20 | 0 | 20 | 0 | 15 | Anoxic | |
13 | HA = 40 mg/L | 20 | 0 | 20 | 0 | 40 | Hyperoxia |
14 | 20 | 0 | 20 | 0 | 40 | Anoxic |