Table 1: Cd2+ ions RE and qe at different initial concentrations.
| Co (mg/L) | Ce (mg/L) | Cd2+ ions | qe (mg/g) |
| ±SDa | RE% ±SD | ±SD | |
| 10 | 0.64 ± 0.04 | 93.57 ± 0.04 | 1.56 ± 0.05 |
| 20 | 1.52 ± 0.10 | 92.42 ± 0.16 | 3.80 ± 0.06 |
| 50 | 4.46 ± 0.22 | 91.08 ± 0.22 | 7.59 ± 0.09 |
| 100 | 9.60 ± 0.15 | 90.39 ± 0.09 | 15.10 ± 0.08 |
| 200 | 23.01 ± 0.60 | 88.49 ± 0.06 | 29.50 ± 0.01 |
| 300 | 78.51 ± 0.70 | 73.75 ± 0.21 | 36.88 ± 0.03 |
| 400 | 176.64 ± 0.97 | 55.84 ± 0.27 | 37.23 ± 0.20 |
| aSD = standard deviation. | |||