Table 2 Reduction rate (%) of estrogen by ultrasound at different time, power, pH and frequency (Mean ± SD)
From: Hormones removal from municipal wastewater using ultrasound
pH | Power (W) | Frequency (KHz) | Time (min) | |||
|---|---|---|---|---|---|---|
30 | 60 | 90 | 120 | |||
3 | 70 | 30 | 12.4 ± 2.3 | 12.7 ± 1.4 | 13.1 ± 1.3 | 13.2 ± 1.3 |
3 | 70 | 45 | 13.3 ± 1.8 | 13.5 ± 1.6 | 13.8 ± 1.2 | 14.5 ± 1.2 |
3 | 70 | 60 | 14.3 ± 1.3 | 15.6 ± 1.4 | 15.8 ± 1.2 | 16.5 ± 1.3 |
3 | 110 | 30 | 20.5 ± 2.4 | 21.1 ± 2.1 | 21.5 ± 1.7 | 21.9 ± 1.6 |
3 | 110 | 45 | 22.3 ± 1.5 | 22.7 ± 1.5 | 22.9 ± 1.4 | 23.3 ± 1.1 |
3 | 110 | 60 | 23.5 ± 1.2 | 23.7 ± 1.2 | 24.1 ± 1.4 | 24.3 ± 1.2 |
7 | 70 | 30 | 26.3 ± 1.4 | 26.7 ± 1.2 | 29.6 ± 1.5 | 31.2 ± 1.4 |
7 | 70 | 45 | 32.5 ± 1.2 | 32.3 ± 1.1 | 33.8 ± 1.3 | 35.2 ± 1.6 |
7 | 70 | 60 | 31.5 ± 1.3 | 33.1 ± 1.2 | 35.6 ± 1.2 | 38.9 ± 1.8 |
7 | 110 | 30 | 39.1 ± 2.5 | 40.5 ± 2.9 | 40.8 ± 2.3 | 42.3 ± 3.1 |
7 | 110 | 45 | 42.1 ± 3.2 | 43.5 ± 2.7 | 44.9 ± 2.6 | 46.1 ± 2.5 |
7 | 110 | 60 | 46.0 ± 2.5 | 46.1 ± 2.8 | 47.8 ± 2.6 | 49.2 ± 2.5 |
10 | 70 | 30 | 67.1 ± 3.1 | 68.9 ± 3.6 | 69.5 ± 2.7 | 70.6 ± 2.8 |
10 | 70 | 45 | 70.8 ± 2.6 | 71.5 ± 2.5 | 74.2 ± 2.7 | 75.3 ± 2.6 |
10 | 70 | 60 | 75.6 ± 2.5 | 75.9 ± 2.6 | 77.5 ± 2.8 | 79.6 ± 2.6 |
10 | 110 | 30 | 81.3 ± 2.6 | 81.9 ± 2.5 | 82.6 ± 3.1 | 84.6 ± 3.1 |
10 | 110 | 45 | 85.8 ± 3.7 | 86.9 ± 2.6 | 87.2 ± 3.5 | 90.9 ± 3.2 |
10 | 110 | 60 | 91.1 ± 3.1 | 91.2 ± 3.1 | 92.2 ± 3.2 | 94.2 ± 2.7 |