Hydranautics PRO-XS2 Extra Ion Selectivity Nanofiltration Membranes
PRO-XS membranes are charged nanofiltration elements designed for enhanced ion selectivity, offering high rejection of divalent cations and anions. This allows for the selective removal and concentration of target ions, enabling the production of industrial-grade chemicals such as Glauber’s salt, hardness-free NaCl, and sodium carbonate (Na₂CO₃).
Size: 8" diameter & 40" length
Reference: PRO-XS2
Hydranautics PRO-XS2 Extra Ion Selectivity Nanofiltration Membranes
By facilitating the separation of salts within brine streams, PRO-XS membranes help minimize mixed salt waste destined for landfill. The purified salts obtained through this process can be recycled or commercially recovered, enhancing operational sustainability and profitability. These membranes are particularly suited for applications in industries where precise salt separation is essential, including chlor-alkali processing, textile manufacturing, electroplating, and dye production.
Specified Performance
| PRO-XS2 Membrane Performance | |
|---|---|
| Permeate Flow (Nominal) | 11,000 gpd (41.6 m³/d) |
| MgSO₄ Rejection | 99.8% (99.6% minimum) |
| Test Conditions | |
| Feed Solution | 2,000 ppm MgSO₄ |
| Applied Pressure | 110 psig (0.76 MPa) |
| Operating Temperature | 77°F (25°C) |
| Permeate Recovery | 15% |
| Feed pH | 6.5 - 7.0 |
| Reference Synthetic Water Performance† | |
| Nominal Sulfate Rejection | 99.8% |
| Nominal Chloride Rejection | <10% |
The Specified Performance is based on data taken after a minimum 10 minutes of operation. Actual testing of elements may be done at conditions which vary from these exact values; in which case, the performance is normalized back to these standard conditions. Permeate flow for individual elements may vary ±15 percent from the value specified.
General Product Description
| Membrane Configuration Details | |
|---|---|
| Configuration | Spiral Wound |
| Membrane Polymer | Composite Polyamide |
| Membrane Active Area | 400 ft² (37.2 m²) |
| Feed Spacer | 34 mil (0.86 mm) |
* The specified performance is based on data taken after a minimum of 10 minutes of operation. Actual testing may vary. Permeate flow may vary ±20%.
† Reference Synthetic Water Test Condition: 10,000 ppm NaCl + 10,000 ppm MgSO₄, at 15 lmh flux, 77 °F (25 °C), 15% recovery, 6.5–7.0 feed pH.
Product Use and Restrictions
| Operating & Design Limits | |
|---|---|
| Maximum Applied Pressure | 600 psig (4.14 MPa) |
| Maximum Chlorine Concentration | < 0.1 ppm |
| Maximum Operating Temperature | 113 °F (45 °C) |
| pH Range, Continuous (Cleaning) | 3.0 - 9.0 (1.0 - 11.5) |
| Maximum Feedwater Turbidity | 1.0 NTU |
| Maximum Feedwater SDI (15 mins) | 5.0 |
| Maximum Feed Flow | 85 gpm (19.3 m³/h) |
| Minimum Brine Flow | 12 gpm (2.7 m³/h) |
| Maximum Pressure Drop for Each Element | 15 psi (0.10 MPa) |
^ The limitations shown here are for general use. For specified projects, operation at more conservative values may ensure the best performance and longest life of the membrane. See Hydranautics Technical Bulletins for more details.
Disclaimer: The information and data are presented in good faith and in lieu of all warranties. All express or implied warranties, including the warranties of merchantability and fitness for a particular purpose, are hereby disclaimed and excluded. Conditions and methods of use of the products are beyond control. Hydranautics assumes no liability for results obtained or damages incurred through the application of the presented information and data. It is the user’s responsibility to determine the appropriateness of Hydranautics’ products for the user’s specific end uses.