ULTRAFILIC ® Membrane Element for the Separation of Oil & Water Filtration and Separation Group Lenntech [email protected] Tel. +31-152-610-900 www.lenntech.com Fax. +31-152-616-289
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© Copyright 2002, 2000 Osmonics, Inc.Printed in USA, P/N 1220752 Rev. C
TECHNOLOGIES
Reverse OsmosisNanofiltrationUltrafiltrationMicrofiltrationIon ExchangeOzonation
COMPONENTS
Softener/Filter Control ValvesProcess Control InstrumentationMembrane ElementsDepth & Pleated Cartridge FiltersCeramic MicrofiltersCentrifugal PumpsLaboratory ProductsFilters & Element HousingsReverse Osmosis KitsMembrane Equipment Skids
ULTRAFILIC®
Membrane Element for the Separation of Oil & Water
Corporate Headquarters
International Headquarters
Sales Locations & Service
Manufacturing Sites
Fluid Solutionsfor a World of Applications
Fluid Solutionsfor a World of Applications
Euro/Africa Sales230 rue Robert SchumanZA des UsellesF-77350 Le Mée sur SeineFRANCE+33 1 64 10 2000 Phone+33 1 64 10 3747 Fax
Asia/Pacific Sales1044/8 SOI 44/2Sukhumvit Road PrakanongBangkok 10110THAILAND+66 2 38 14213 Phone+66 2 39 18183 Fax
North American Sales760 Shadowridge DriveVista, CA92083-7986USA(760) 598-3334 Phone(760) 598-3335 Fax
®
Call (760) 598-3334 for additional information, (800) 423-3725 in the U.S., or visit www.osmonics.com
Filtration and Separation Group
Corporate Headquarters: 5951 Clearwater Drive, Minnetonka, MN 55343-8995 • (952) 933-2277 Phone
[email protected] Tel. +31-152-610-900www.lenntech.com Fax. +31-152-616-289
UltraFilic Membranes Are Oleophobic
A Measure of HydrophilicityA Measure of Hydrophilicity
WaterDroplets M-Series
Contact Angle
Membrane
4˚66˚
MEMBRANEMATERIAL
M-SeriesUltrafilic®
4˚CONTACTANGLE
M-SeriesUltrafilic®
4˚112˚ 108˚ 66˚ 46˚ 44˚ >30˚
Increasing HydrophilicityOleophilic: Oleophobic:
Repels WaterAbsorbs OilFouls with Free OilsLower Flux per FootDifficult to Clean
Repels OilsAbsorbs WaterNot Fouled by Free OilsHigher Flux per FootEasier to Clean
Poly- Unmodified HydrophilicPTFE Propylene PVDF PAN Polysulfone Ceramic
Perforated Central Tube
Permeate Collection MaterialMembrane
Feed Channel Spacer
Outer Wrap
Permeate
Concentrate
Feed Solution
M-Series“Fouling Free” Technology
Oil / Water Separation… The Osmonics Solution
Oil / Water Separation… The Osmonics Solution
The separation of oil and water by ultrafiltration (UF) is a well-proven technology, but its widespread utilization for wastewater minimization or recycling applications has been limited by threecommon problems:
1. fouling from “free” oil which overflows from upstream pretreatment
2. fouling from “free” oil which de-emulsifies as the feed is concentrated
3. fouling and decomposition of the membrane from accidentalcontamination of the waste stream by aggressive solvents
The M-Series membrane by Osmonics is a technologicallysuperior UltraFilic membrane element that will resist theserecurring obstacles. M-Series membrane elements are not fouledby “free” oils or degraded by solvents (Figure 1). The objectivesof most applications are met by M-Series membrane elementsavailable a wide range of sizes.
M-Series UltraFilic membranes are madeof a chemically modified polyacrylonitrile(PAN) polymer. To avoid fouling by “free” oils,the M-Series membrane has been engineeredto be extremely hydrophilic (water attracting)as compared to conventional membraneswhich are oleophilic (oil attracting).The improvement in membrane hydrophilicityis quantified by measuring water-membrane-air contact angles for the various membranetypes (Figure 2). A smaller contact angle
correlates with a morehydrophilic surface and lessfouling by “free” oils and highly concentrated oilemulsions.
M-Series membranes are alsodesigned to have asymmetricpore morphology (Figure 3).This pore structure creates asurface filter with its smallestopening at the outer skin of themembrane (“A” shaped ratherthan “V”shaped). Oil and dirtmolecules are rejected at thesurface rather than beingirreversibly entrapped in thedepths of the pore.
The chemical stability of the UltraFilicmembrane material is key to M-Series successin the environmental market (Figure 4). It notonly is compatible with most hydrocarbons,acids and polar organic solvents used in manyindustrial plants, the UltraFilic membranes canoperate at temperatures to 194˚F (90˚C) and arestable in the pH range of 2 to 10. This versatilityeliminates the need to neutralize the wastestream prior to filtration and makes it possibleto recycle most aqueous cleaners on-line attheir operating temperatures.
M-Series Element Design
Anisotropic (‘A’ Shaped)Pore Performs Surface Filtration
Membrex’s New AnisotropicGrey Zone Membrane
Isotropic and ‘V’ Shaped PoresDesigned to Entrap Contaminants
Waste Applications Aqueous Cleaner Recycling Solids Separations❚ Ideal for oil removal❚ Virtually no oil passage❚ Too small for recycling❚ Easy to clean
❚ Ideal for recycling cleaners❚ Cleaner passes through pore❚ Most oil is held back❚ Easy to clean
❚ High initial flow rate❚ Solids clog pores❚ Permanent fouling❚ Oil passage high❚ Hard to clean
Small porewith open
substructure
Oil/dirtrejected atthe surface
Larger porewith opensubstructure
Oil/dirtrejected atthe surface
Pore opening& substructuresimilar size
Oil & dirtbecome imbedded
in the pore &substructure
Molecular Filtration Ultrafilter With Larger Pores Particle Filtration
ULTRAFILTRATIONULTRAFILTRATION GREY ZONE FILTRATIONGREY ZONE FILTRATION MICROFILTRATIONMICROFILTRATION
“Free Oil”Coats MostMembranes Asymmetric
MembranePore
PressurePushes WaterThroughMembrane
Oil CoatedWith Surfactant
Direction of Flow
Membrane
SurfactantMicelle
WaterMolecules
And AlkalinityBuilders
SurfactantMolecule
Aliphatic Hydrocarbons(e.g., Hexane)
CHEMICAL TYPE ULTRAFILIC PVDF PSCHEMICAL TYPE ULTRAFILIC PVDF PS
Aromatic Hydrocarbons(e.g., Xylene)
Halogenated Hydrocarbons(e.g., 1,1,1 Trichloroethane)
Polar Organic Solvents(e.g., Acetone, MEK)
Acids
Base
EXCELLENT GOOD POOR
How the M-Series Works
Figure 2
Figure 1
Membranes Morphology
Figure 3
Figure 4
M-SeriesUltraFilic Membranes
❚ Petroleum/Gas❚ Chemical❚ Food❚ Automotive
❚ Laundry❚ Metal Finishing❚ Pharmaceutical❚ Textile
Chemical Resistance& Performance Versatility Membrane Chemical Compatibility
Process applications withinthese industries:
UltraFilic Membranes Are Oleophobic
A Measure of HydrophilicityA Measure of Hydrophilicity
WaterDroplets M-Series
Contact Angle
Membrane
4˚66˚
MEMBRANEMATERIAL
M-SeriesUltrafilic®
4˚CONTACTANGLE
M-SeriesUltrafilic®
4˚112˚ 108˚ 66˚ 46˚ 44˚ >30˚
Increasing HydrophilicityOleophilic: Oleophobic:
Repels WaterAbsorbs OilFouls with Free OilsLower Flux per FootDifficult to Clean
Repels OilsAbsorbs WaterNot Fouled by Free OilsHigher Flux per FootEasier to Clean
Poly- Unmodified HydrophilicPTFE Propylene PVDF PAN Polysulfone Ceramic
Perforated Central Tube
Permeate Collection MaterialMembrane
Feed Channel Spacer
Outer Wrap
Permeate
Concentrate
Feed Solution
M-Series“Fouling Free” Technology
Oil / Water Separation… The Osmonics Solution
Oil / Water Separation… The Osmonics Solution
The separation of oil and water by ultrafiltration (UF) is a well-proven technology, but its widespread utilization for wastewater minimization or recycling applications has been limited by threecommon problems:
1. fouling from “free” oil which overflows from upstream pretreatment
2. fouling from “free” oil which de-emulsifies as the feed is concentrated
3. fouling and decomposition of the membrane from accidentalcontamination of the waste stream by aggressive solvents
The M-Series membrane by Osmonics is a technologicallysuperior UltraFilic membrane element that will resist theserecurring obstacles. M-Series membrane elements are not fouledby “free” oils or degraded by solvents (Figure 1). The objectivesof most applications are met by M-Series membrane elementsavailable a wide range of sizes.
M-Series UltraFilic membranes are madeof a chemically modified polyacrylonitrile(PAN) polymer. To avoid fouling by “free” oils,the M-Series membrane has been engineeredto be extremely hydrophilic (water attracting)as compared to conventional membraneswhich are oleophilic (oil attracting).The improvement in membrane hydrophilicityis quantified by measuring water-membrane-air contact angles for the various membranetypes (Figure 2). A smaller contact angle
correlates with a morehydrophilic surface and lessfouling by “free” oils and highly concentrated oilemulsions.
M-Series membranes are alsodesigned to have asymmetricpore morphology (Figure 3).This pore structure creates asurface filter with its smallestopening at the outer skin of themembrane (“A” shaped ratherthan “V”shaped). Oil and dirtmolecules are rejected at thesurface rather than beingirreversibly entrapped in thedepths of the pore.
The chemical stability of the UltraFilicmembrane material is key to M-Series successin the environmental market (Figure 4). It notonly is compatible with most hydrocarbons,acids and polar organic solvents used in manyindustrial plants, the UltraFilic membranes canoperate at temperatures to 194˚F (90˚C) and arestable in the pH range of 2 to 10. This versatilityeliminates the need to neutralize the wastestream prior to filtration and makes it possibleto recycle most aqueous cleaners on-line attheir operating temperatures.
M-Series Element Design
Anisotropic (‘A’ Shaped)Pore Performs Surface Filtration
Membrex’s New AnisotropicGrey Zone Membrane
Isotropic and ‘V’ Shaped PoresDesigned to Entrap Contaminants
Waste Applications Aqueous Cleaner Recycling Solids Separations❚ Ideal for oil removal❚ Virtually no oil passage❚ Too small for recycling❚ Easy to clean
❚ Ideal for recycling cleaners❚ Cleaner passes through pore❚ Most oil is held back❚ Easy to clean
❚ High initial flow rate❚ Solids clog pores❚ Permanent fouling❚ Oil passage high❚ Hard to clean
Small porewith open
substructure
Oil/dirtrejected atthe surface
Larger porewith opensubstructure
Oil/dirtrejected atthe surface
Pore opening& substructuresimilar size
Oil & dirtbecome imbedded
in the pore &substructure
Molecular Filtration Ultrafilter With Larger Pores Particle Filtration
ULTRAFILTRATIONULTRAFILTRATION GREY ZONE FILTRATIONGREY ZONE FILTRATION MICROFILTRATIONMICROFILTRATION
“Free Oil”Coats MostMembranes Asymmetric
MembranePore
PressurePushes WaterThroughMembrane
Oil CoatedWith Surfactant
Direction of Flow
Membrane
SurfactantMicelle
WaterMolecules
And AlkalinityBuilders
SurfactantMolecule
Aliphatic Hydrocarbons(e.g., Hexane)
CHEMICAL TYPE ULTRAFILIC PVDF PSCHEMICAL TYPE ULTRAFILIC PVDF PS
Aromatic Hydrocarbons(e.g., Xylene)
Halogenated Hydrocarbons(e.g., 1,1,1 Trichloroethane)
Polar Organic Solvents(e.g., Acetone, MEK)
Acids
Base
EXCELLENT GOOD POOR
How the M-Series Works
Figure 2
Figure 1
Membranes Morphology
Figure 3
Figure 4
M-SeriesUltraFilic Membranes
❚ Petroleum/Gas❚ Chemical❚ Food❚ Automotive
❚ Laundry❚ Metal Finishing❚ Pharmaceutical❚ Textile
Chemical Resistance& Performance Versatility Membrane Chemical Compatibility
Process applications withinthese industries:
© Copyright 2002, 2000 Osmonics, Inc.Printed in USA, P/N 1220752 Rev. C
TECHNOLOGIES
Reverse OsmosisNanofiltrationUltrafiltrationMicrofiltrationIon ExchangeOzonation
COMPONENTS
Softener/Filter Control ValvesProcess Control InstrumentationMembrane ElementsDepth & Pleated Cartridge FiltersCeramic MicrofiltersCentrifugal PumpsLaboratory ProductsFilters & Element HousingsReverse Osmosis KitsMembrane Equipment Skids
ULTRAFILIC®
Membrane Element for the Separation of Oil & Water
Corporate Headquarters
International Headquarters
Sales Locations & Service
Manufacturing Sites
Fluid Solutionsfor a World of Applications
Fluid Solutionsfor a World of Applications
®
Filtration and Separation [email protected] Tel. +31-152-610-900www.lenntech.com Fax. +31-152-616-289
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