| Zn2+ + Cd2+ (mg/L) |
| Zn2+ |
| Cd2+ | ||
| kobs (h−1) | R2 | kobs (h−1) | R2 | |||
| 5 + 5 |
| 0.02083 | 0.81109 |
| 0.01234 | 0.9978 |
| 10 + 10 |
| 0.02081 | 0.97056 |
| 0.04392 | 0.9325 |
| 20 + 20 |
| 0.0138 | 0.82848 |
| 0.0251 | 0.99336 |