Organic solvent nanofiltration
Superior Membrane Performance
The PURAMEM® membranes are market leading for Organic Solvent Nanofiltration (OSN). THey are made from the P84® polyimide. Their superior stability in non-aqueous solvents allows users to generate extra product value in a wide variety of applications in chemical process industries. Benefits of OSN include reduced cost of goods, reduced energy consumption, and increased yield through gentle, ambient temperature separations.
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Evonik provides OSN membrane products with performance characteristics targeting the needs of the chemical process industries for separation-, purification-, recovery- or concentrationbased applications.
PURAMEM®
PURAMEM® is a membrane series stable in apolar hydrocarbon-type solvents. PURAMEM® shows superior rejection and flux performance as compared to similar commercially available membranes. The PURAMEM® membrane family is also solvent-stable, but is compatible and designed for use with nonpolar solvents such as aromatic hydrocarbons, aliphatic hydrocarbons and ethyl acetate.
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Details |
PuraMem |
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Formats |
flat sheets and spiral wound membrane modules |
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Molecular weight cutoff range |
280 to 600 Da |
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Recommended maximum temperature |
50°C |
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Recommended maximum operating pressure |
from 20 to 60 bar (290 to 870 psi) |
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Useable in |
toluene, heptane, hexane, methylethylketone , methyl-isobutylketone, ethyl acetate, and more |
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Not recommended in the presence of |
most polar and polar aprotic solvents, chlorinated solvents, strong amines |
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MWCO |
• PM Selective |
