(A) | |||||||||
---|---|---|---|---|---|---|---|---|---|
Membrane | Feed concentration (mg/mL) | Separation factor | |||||||
10Â bar | 20Â bar | ||||||||
40 °C | 50 °C | 60 °C | 40 °C | 50 °C | 60 °C |  |  | ||
NF270 | 5 | 1.32 | 1.32 | 1.31 | 1.02 | 1.09 | 1.15 | Â | Â |
20 | 1.21 | 1.26 | 1.36 | 1.10 | 1.08 | 1.29 | Â | Â | |
TS40 | 5 | 1.00 | 1.16 | – | – | – | – |  |  |
20 | 1.21 | 1.39 | – | – | – | – |  |  |
(B) | |||||||||
---|---|---|---|---|---|---|---|---|---|
Membrane | Feed concentration (mg/mL) | Retentiona (%) | |||||||
RT | 40 °C | 50 °C | 60 °C | ||||||
C2 | C1 | C2 | C1 | C2 | C1 | C2 | C1 | ||
NF270 | 5 | 96.3 | 86.4 | 91.4 | 69.2 | 89.1 | 72.6 | 87.6 | 66.8 |
20 | 97.4 | 93.0 | 95.5 | 79.1 | 91.2 | 72.5 | 94.9 | 69.9 | |
TS40 | 5 | 93.0 | 90.2 | 99.3 | 99.2 | 98.6 | 84.6 | – | – |
20 | 93.6 | 84.4 | 91.3 | 75.5 | 89.3 | 64.3 | – | – |