ORINS Membrane-AS
AS Acid-resistant Nanofiltration Element
AS supports acid purification, recovery, metal concentration and selective separation in low-pH feeds.
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PRODUCT OVERVIEW
Characteristics
The AS acid-resistant NF element supports acid purification, recovery, metal concentration and selective separation in very low-pH feeds.
- Reference MWCO 200 Da
- Reference flux 25 LMH with 96% MgSO4 and glucose rejection
- Reference compatibility across common mineral and organic acids
- Operating pH 0–12 and cleaning pH 0–13
TECHNICAL DATA
Specifications and operating conditions
| Element | Material | Active area | Reference flow / flux | MWCO | Feed spacer | Application focus |
|---|---|---|---|---|---|---|
| AS-8040 | Acid-resistant composite membrane | Not specified | 25 LMH | 200 Da | Not specified | Acid purification, metal concentration and acid recovery |
Reference data uses 2000 ppm MgSO4 or 5% glucose at 15.5 bar, 30°C and pH 7; flux may vary by approximately ±20%.
Published operating limits
- Maximum pressure
- 55 bar
- Maximum pressure drop
- 1 bar
- Operating/cleaning temperature
- ≤ 40°C
- Operating pH
- 0–12
- Cleaning pH
- 0–13
- Pressure ramp
- < 0.7 bar/s
Reference values and maximum limits do not establish a combined operating condition for every feed. Confirm selection and operating conditions for the actual duty.
APPLICATIONS
Typical applications
- Acid purification and recovery
- Metal ion concentration
- Acidic mother liquor reduction
- Impurity control in acidic brines
SELECTION
Validate with your feed
Acid type, concentration, temperature, metal ions and oxidants require durability validation.
Testing & scale-upOPERATION
Operating guidance
Remove oxidants
Remove free chlorine and oxidants; use softened or RO water for cleaning.
Respect cleaning limits
Reference alkaline cleaning pH 10–12 and acid cleaning pH 1–2 below 40°C.
Store wet and sealed
Do not dry the element; store sealed at 4–30°C with a suitable preservative.