Table 5 Separation factors and sugar retention for all nanofiltration membranes at different feed concentrations of the pure sugar mixture, in various pressure conditions
Membrane | Feed concentration (mg/mL) | Separation factor | Retention (% w/w)a | ||||
|---|---|---|---|---|---|---|---|
5Â bar | 10Â bar | 15Â bar | 20Â bar | Cellobiose | Glucose | ||
NF270 | 5 | – | 1.12 | – | 1.03 | 96.3 | 86.4 |
20 | – | 1.05 | – | 1.02 | 97.4 | 93.0 | |
DL | 5 | 1.11 | 1.14 | 1.11 | 1.03 | 86.6 | 76.0 |
20 | – | 1.10 | 1.07 | 1.07 | 89.0 | 81.3 | |
NFX | 5 | – | 1.00 | – | – | 98.8 | 98.5 |
NFW | 5 | 1.01 | – | – | – | 64.0 | 63.2 |
20 | 0.96 | – | – | – | 58.1 | 60.4 | |
TS40 | 5 | – | 1.03 | 1.07 | – | 93.0 | 90.2 |
20 | – | 1.11 | 1.04 | – | 93.6 | 84.4 | |