Table 4 Taguchi model matrix for formaldehyde removal.
From: Evaluating the efficiency of formaldehyde degradation from aqueous environment by sonozone technique
Stage | pH | Ozone concentration (mg/min L) | Formaldehyde concentration (mg/L) | Time (min) | Electrical power (W) | Removal (%) | S/N |
|---|---|---|---|---|---|---|---|
1 | 3 | 0.6 | 110 | 32 | 50 | 100 | 40 |
2 | 7 | 0.4 | 220 | 8 | 100 | 79 | 37.95 |
3 | 11 | 0.2 | 330 | 16 | 150 | 69 | 36.77 |
4 | 3 | 0.6 | 110 | 32 | 100 | 100 | 40 |
5 | 7 | 0.4 | 220 | 8 | 150 | 83.5 | 38.44 |
6 | 11 | 0.2 | 330 | 16 | 50 | 56.8 | 35.10 |
7 | 3 | 0.6 | 110 | 32 | 150 | 100 | 40 |
8 | 7 | 0.4 | 220 | 16 | 100 | 82.5 | 38.32 |
9 | 11 | 0.2 | 330 | 8 | 50 | 53 | 34.48 |
10 | 3 | 0.6 | 110 | 32 | 100 | 100 | 40 |
11 | 7 | 0.4 | 220 | 8 | 50 | 72.2 | 37.17 |
12 | 11 | 0.2 | 330 | 16 | 150 | 69 | 36.77 |
13 | 3 | 0.6 | 110 | 32 | 50 | 98 | 39.82 |
14 | 7 | 0.4 | 220 | 8 | 150 | 88 | 38.88 |
15 | 11 | 0.2 | 330 | 16 | 100 | 62.8 | 35.95 |
