Table 1.
Determination of resistances and permeabilities of membrane
| MF Total recycle mode | MF Batch concentration mode | |
|---|---|---|
| Resistances | ||
| Rt (·1012).(m−1) | 132 | 184 |
| Rm (1012).(m−1) | 4.43 | 4.43 |
| Rf (1012).(m−1) | 128 | 180 |
| Rrev (1012).(m−1) | 67 | 150 |
| Rirrrev (1012).(m−1) | 61 | 30 |
| Rrev/Rf (%) | 52.66 | 83.33 |
| Rirrev/Rf (%) | 47.34 | 16.67 |
| Permeabilities before and after cleaning processes | ||
| Clean membrane (L0) | 91.11 | 91.11 |
| After treatment with juice (L1) | 3.06 | 2.22 |
| After cleaning with water (L2) | 6.67 | 13.21 |
| After cleaning with alkaline solution | 24.01 | 23.10 |
| Fouling index (%) | 96.64 | 97.56 |
(n = 2)