Dose of H2O2 (mg/L) | Non-impregnated GAC | HCl-treated GAC | HNO3-treated GAC | HCl+HNO3?treated GAC |
3.2 | 61.63 ± 1.79 63.25 ± 2.15 59.62 ± 2.92 | 85.3 ± 3.04 83.5 ± 2.86 86.1 ± 2.79 | 82.17 ± 2.84 81.61 ± 3.23 79.89 ± 2.62 | 80.22 ± 3.31 79.34 ± 2.51 77.84 ± 2.72 |
6.4 | 70.13 ± 3.58 69.32 ± 2.56 69.51 ± 2.71 | 89.22 ± 3.48 90.43 ± 2.86 89.61 ± 3.75 | 86.71 ± 3.81 85.68 ± 3.21 84.39 ± 3.17 | 81.82 ± 2.67 82.57 ± 2.71 80.59 ± 3.16 |
9.6 | 68.33 ± 2.90 66.82 ± 3.05 64.36 ± 2.57 | 89.45 ± 4.08 89.90 ± 3.04 88.72 ± 2.64 | 86.24 ± 3.58 84.64 ± 3.25 86.76 ± 2.95 | 80.89 ± 2.39 81.56 ± 2.16 79.67 ± 2.80 |