Table 10 The retention coefficient values of NaCl solutions through alumina, alumina-titania, and titania membranes
From: Synthesis of alumina, titania, and alumina-titania hydrophobic membranes via sol?gel polymeric route
NaCl concentration (ppm) | Feed/permeate temperature (?C) | Retention coefficient (%) | ||||
|---|---|---|---|---|---|---|
| Â | Â | A | AT25 | AT50 | AT75 | T |
2,000 | 45:7 | 19.58 | 26.30 | 28.51 | 11.5 | 10.67 |
55:7 | 21.57 | 29.56 | 31.77 | 17.11 | 27.54 | |
65:7 | 32.52 | 41.55 | 38.69 | 19.17 | 38.96 | |
75:7 | 35.24 | 46.55 | 42.77 | 30.52 | 42.93 | |
3,000 | 45:7 | 26.2 | 28 | 30.79 | 15.31 | 24.27 |
55:7 | 45.24 | 36.22 | 39.10 | 28.11 | 43.69 | |
65:7 | 47.62 | 44 | 46.43 | 29.32 | 53.79 | |
75:7 | 50.82 | 47.25 | 48.88 | 30.67 | 58.09 | |
5,000 | 45:7 | 34.44 | 53.02 | 32.99 | 16.87 | 53.58 |
55:7 | 49.77 | 56.11 | 46.43 | 37.65 | 54.91 | |
65:7 | 51.39 | 63.58 | 60.49 | 40.09 | 56.23 | |
| Â | 75:7 | 54.26 | 72.59 | 70.26 | 47.43 | 61.57 |