TABLE 2.
Concentrations of total Cr for the treatments (T1 = 1% bentonite, T2 = 2% bentonite, T3 = 3% bentonite, T4 = 4% bentonite, T5 = 5% bentonite, T6 = 6% bentonite) in batch adsorption experiment.
| Time (h) | Time (min) | T1 (mg L–1) | T2 (mg L–1) | T3 (mg L–1) | T4 (mg L–1) | T5 (mg L–1) | T6 (mg L–1) |
| 0.5 | 30 | 38.54 | 29.75 | 27.30 | 29.12 | 29.81 | 29.17 |
| 1 | 60 | 27.00 | 20.92 | 24.40 | 23.81 | 21.07 | 24.47 |
| 2 | 120 | 15.04 | 15.45 | 12.09 | 14.53 | 17.57 | 16.27 |
| 6 | 340 | 12.71 | 11.83 | 11.01 | 13.27 | 15.86 | 13.88 |
| 8 | 480 | 11.39 | 9.32 | 10.78 | 12.87 | 12.78 | 11.20 |
| 9 | 540 | 8.83 | 8.75 | 9.57 | 6.75 | 10.10 | 10.71 |
| 10.5 | 630 | 7.11 | 6.08 | 6.14 | 5.88 | 7.07 | 9.77 |
| 11.5 | 690 | 7.58 | 5.11 | 5.94 | 5.19 | 4.91 | 7.29 |
| 20.30 | 1,218 | 5.65 | 4.12 | 5.31 | 4.96 | 3.66 | 6.10 |