Table 1.
Long-term permeation parameters for the AAO_120V membrane with an average pore diameter of 90 ± 10 nm, thickness 100 μm and porosity 10%.
| Solvent | Viscosity, mPa·s |
Initial permeance, L/(m2·bar·h) |
Solution pH | Permeability slope, bar−1·h−1 | Membrane weight loss, % | Al concentration in permeate, mg/L |
| DMSO | 2.02 | 31.5 ± 0.3 | – | −2.2 ± 2.8 | 0 | − |
| ethanol | 1.19 | 49.0 ± 0.5 | – | 16.9 ± 3.8 | 0 | − |
| water | 0.89 | 73 ± 3 | 3 | 20.5 ± 2.2 | 0.013 | 4.4 |
| 4.5 | 8.4 ± 0.4 | 0 | 2.8 | |||
| 6 (first cycle) | −53.2 ± 3.2 | 0 | 0.04 | |||
| 6 (second cycle) | −69.6 ± 6.9 | 0 | n.a. | |||
| 6.5 | −366 ± 16 | 0 | 2.1 | |||
| 7.6 | −800 ± 30 | 0 | 3.2 | |||
| 9 | −1980 ± 120 | 0 | 6.7 | |||