Specialty — Diffusion Dialysis
SP-DDA Series — Acid Recovery Diffusion Dialysis Membranes
Anion exchange membranes for acid–salt and acid–organic separation
Product description
The Acid Recovery Diffusion Dialysis Membrane is a high-efficiency membrane separation product specifically designed for separating acid–salt and acid–organic systems. It enables recovery of acids from waste streams for reuse in production processes, promoting resource recycling, reducing waste and improving both economic and environmental performance.
Working principle: the membrane selectively allows acid ions to diffuse from the waste solution to the product side under a concentration gradient, without requiring external pressure. Impurities, salts and organic compounds are retained, ensuring efficient acid recovery. The process is environmentally friendly, energy-efficient and suitable for continuous operation.
Specifications
| Analysis Item | Unit | SV-SP-DDA3 | SV-SP-DDA3S | SV-SP-DDA3SS |
|---|---|---|---|---|
| Ion Exchange Capacity | mmol·g⁻¹ | 0.90–1.20 | 0.90–1.20 | 0.90–1.20 |
| Thickness (wet) | μm | 130–160 | 130–160 | 130–160 |
| Water Content (25 °C) | wt % | 40–60 | 40–60 | 40–60 |
| Dialysis Coefficient | 10⁻⁷ m·s⁻¹ | ≥10 | ≥10 | ≥10 |
| Separation Factor | — | ≥25 | ≥25 | ≥25 |
| Operating Temperature | °C | 15–40 | 15–40 | 15–40 |
| Application | — | Sulfuric acid system | Hydrochloric / Nitric acid system | Systems with small amounts of organic solvents |
Performance figures are nominal values obtained under the standard test conditions stated with each table. Actual performance varies with feedwater chemistry, pretreatment, flux, recovery, temperature, pressure and operating practice. Individual element flow may vary from the nominal value. Specifications are subject to change without notice — request the current datasheet before specifying.
Typical applications
- Waste acid recovery — treatment and reuse of various industrial waste acids
- Titanium dioxide production — recycling of acid solutions to reduce discharge
- Steel industry — recovery and reuse of pickling solutions
- Lithium-ion battery foil production — acid purification and recovery
- Hydrometallurgy — separation and recovery of acidic solutions
- Battery industry — sulfuric acid recovery
- Electroplating — separation and recycling of acidic plating solutions
- Aluminium processing — regeneration of pickling solutions
- Rare earth industry — recovery of acidic extraction solutions
- Agrochemical and pharmaceutical — recovery of acidic process solutions
- Pharmaceutical engineering — reuse of acidic reaction solutions
- Polysilicon production — recovery of acidic cleaning solutions
- Graphite processing — separation and recovery of acidic treatment solutions
Need a datasheet or pilot support?
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