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Characteristics of the NF membranes used.
| Structural Features | AFC 40 | AFC 80 |
|---|---|---|
| Membrane type | Tubular | Tubular |
| Material/Substrate | Polyamide selective layer/polysulfone | Polyamide selective layer/polysulfone |
| Usable pH range | 1.5–10.5 | 1.5–10.5 |
| Maximum pressure (bar) | 60 | 60 |
| Maximum temperature (°C) | 60 | 70 |
| Surface charge | Negative | Negative |
| Effective membrane area (cm2) | 240 | 240 |
| Membrane length (cm) | 30 | 30 |
| Internal diameter (cm) | 1.25 | 1.25 |
