No. | Dosage | Contact time | Temperature | pH | Phenol removal efficiency (%) |
1 | 1 | 1 | 1 | 1 | 18.17 |
2 | 1 | 2 | 2 | 2 | 15.56 |
3 | 1 | 3 | 3 | 3 | 2.63 |
4 | 1 | 4 | 4 | 4 | 36.56 |
5 | 1 | 5 | 5 | 5 | 6.00 |
6 | 2 | 1 | 2 | 3 | 17.34 |
7 | 2 | 2 | 3 | 4 | 7.72 |
8 | 2 | 3 | 4 | 5 | 36.76 |
9 | 2 | 4 | 5 | 1 | 4.96 |
10 | 2 | 5 | 1 | 2 | 40.50 |
11 | 3 | 1 | 3 | 5 | 7.92 |
12 | 3 | 2 | 4 | 1 | 38.14 |
13 | 3 | 3 | 5 | 2 | 8.30 |
14 | 3 | 4 | 1 | 3 | 38.92 |
15 | 3 | 5 | 2 | 4 | 24.78 |
16 | 4 | 1 | 4 | 2 | 45.40 |
17 | 4 | 2 | 5 | 3 | 11.64 |
18 | 4 | 3 | 1 | 4 | 32.64 |
19 | 4 | 4 | 2 | 5 | 32.24 |
20 | 4 | 5 | 3 | 1 | 18.32 |
21 | 5 | 1 | 5 | 4 | 15.56 |
22 | 5 | 2 | 1 | 5 | 25.38 |
23 | 5 | 3 | 2 | 1 | 39.12 |
24 | 5 | 4 | 3 | 2 | 18.32 |
25 | 5 | 5 | 4 | 3 | 45.40 |
K1 | 15.78 | 20.88 | 31.12 | 23.74 |
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|
K2 | 21.45 | 19.69 | 25.81 | 25.62 | |
K3 | 23.61 | 23.90 | 10.98 | 23.19 | |
K4 | 28.05 | 26.20 | 40.45 | 23.45 | |
K5 | 28.76 | 27.00 | 9.29 | 21.66 | |
Range (R) | 12.98 | 7.31 | 31.16 | 3.96 |