Table 2.
Transport properties of the dense SA membrane and supported membranes with a thin layer based on SA, deposited on various porous substrates (UPM, RC, and PAN), in the pervaporation separation of an azeotropic water/isopropanol (12/88 wt.%) mixture at 22 °C.
| Membrane | Permeation Flux, kg/(m2 h) |
Water Content in the Permeate, wt.% |
Separation Factor (β) |
PSI, kg/(m2 h) |
|---|---|---|---|---|
| SA | 0.151 | >99.9 | 73,326 | 11,072 |
| SA/UPM | 0.173 | 98.7 | 536 | 93 |
| SA/RC | 0.200 | 99.4 | 1215 | 243 |
| SA/PAN | 0.266 | >99.9 | 73,326 | 19,504 |
PSI: pervaporation separation index.