Organic solvent nanofiltration
Superior Membrane Performance
The PURAMEM® membranes are market-leading for Organic Solvent Nanofiltration (OSN). Their superior stability in non-aqueous solvents allows users to generate extra product value in a wide variety of applications in the chemical process industries. Benefits of OSN include reduced energy consumption and carbon emissions, reduced cost of goods 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 family of membranes 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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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 |
very broad range of organic solvents, including aliphatic and aromatic hydrocarbons, esters, ketones and more |
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Not recommended in the presence of |
polar aprotic solvents, highly polar solvents, chlorinated solvents, strong acids and amines, high water-content solutions |
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Performance |
• PM Selective (Tightest membrane; lower permeate flux) |
