Table 4 Response surface methodology for adsorption analyses
Run | pH | Adsorbent dose(g/mL) | Contact- time(min) | Removal efficiency (%) | Adsorption capacity(g/mg) |
|---|---|---|---|---|---|
1 | 5 | 0.5 | 30 | 21.9 | 4.38 |
2 | 8 | 0.5 | 30 | 15.6 | 3.12 |
3 | 8 | 1.5 | 30 | 44.5 | 2.97 |
4 | 8 | 1 | 30 | 33.6 | 3.36 |
5 | 2 | 1.5 | 30 | 69.6 | 4.64 |
6 | 2 | 0.5 | 30 | 22.4 | 4.48 |
7 | 2 | 0.5 | 75 | 42.5 | 8.5 |
8 | 2 | 1.5 | 75 | 87.5 | 5.83 |
9 | 5 | 0.5 | 75 | 34.9 | 6.98 |
10 | 5 | 1.5 | 75 | 77.7 | 5.18 |
11 | 8 | 1 | 75 | 49.2 | 4.92 |
12 | 8 | 1.5 | 75 | 52.5 | 3.5 |
13 | 5 | 1 | 75 | 70.4 | 7.04 |
14 | 2 | 0.5 | 120 | 44.1 | 8.82 |
15 | 8 | 1.5 | 120 | 75.9 | 5.06 |
16 | 8 | 1 | 120 | 68.5 | 6.85 |
17 | 5 | 1 | 120 | 82.5 | 8.25 |
18 | 5 | 1.5 | 120 | 88.6 | 5.87 |
19 | 2 | 1.5 | 120 | 90.4 | 6.03 |
20 | 8 | 0.5 | 120 | 43.9 | 8.78 |