Table 1 Comparison of pervaporation performance of the homogeneous PDMS membrane and zeolite-mixed membranes
No zeolite | 20 wt% zeolite | 50 wt% zeolite | 80 wt% zeolite | |||||
|---|---|---|---|---|---|---|---|---|
37°C | 80°C | 37°C | 80°C | 37°C | 80°C | 37°C | 80°C | |
Total flux, g/m2 h | 160.3 | 435.4 | 152.4 | 413.6 | 133.6 | 386.2 | 99.8 | 377.2 |
Butanol flux, g/m2 h | 16.3 | 96.4 | 18.5 | 96.0 | 22.1 | 106.3 | 20.3 | 126.2 |
Butanol titer in permeate, g/L | 101.6 | 221.4 | 121.5 | 232.1 | 165.2 | 275.3 | 203.1 | 334.6 |
Separation factor | 7.4 | 18.7 | 9.1 | 19.8 | 13.0 | 24.9 | 16.7 | 33.0 |