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NEOSEPTA
NEOSEPTA
Ion exchange membranes of superior characteristics, such as higher ionic perm-selectivity, lower electric resistance, compatibility to chemicals, etc. The membranes are applicable to various fields, such as production of salt from sea-water, purification of foodstuff and pharmaceuticals, recovery of valuables, wastewater treatment.

PRINCIPLE
disk Feature of Ion Exchange Membrane
Ion Exchange Membranes are selectively permeable to ions (Fig.1-1) and are divided into Cation Exchange Membranes and Anion Exchange Membranes.
Since negative-charged groups are fixed to a Cation Exchange Membrane (Fig.1-2), anions are rejected by the negative charges and can not permeate through the Cation Exchange membrane. That is the Cation Exchange Membranes are only permeable to cations. The Anion Exchange Membranes perform opposite way to the Cation Exchange membranes. This selective permeations are carried out by DC current at an Electrodialyzer.
Fig.1-1 Ion Exchange Membrane
Fig.1-1 Ion Exchange Membrane
Fig.1-2 Permselectivity of Ion Exchange Membrane
Fig.1-2 Permselectivity of Ion Exchange Membrane
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disk Difference between Ion Exchange Membrane and Ion Exchange Resin
Similar behavior happens in Ion Exchange Resin. The Ion Exchange Resin is in the granular form and performs as adsorptive exchange of ions(Fig.2), but it requires regeneration when adsorptive capacity is consumed. On the contrary, as the Ion Exchange Membrane allows ions to permeate by DC electric current, no regeneration requires and allows continuous use for an extended period of time.
Fig.2 Ion Exchange Resin
Fig.2 Ion Exchange Resin
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CHARACTERISTICS OF NEOSEPTA
disk "NEOSEPTA" is an Ion Exchange Membrane having the following excellent characteristics.
1
High Ionic Permselectivity
"NEOSEPTA" has excellent permselectivity which selectively allows specific ions permeate.
2
Low Electric Resistance
Although "NEOSEPTA" is provided with backing material for reinforcement, the electric resistance is low which is very important for economics of plant operation.
3
Low Diffusion Coefficient
Since "NEOSEPTA" has a low diffusion coefficient of solute or solvent, undesired back diffusion or transfer can be minimized.
4
High Mechanical Strength
With backing material for reinforcement, "NEOSEPTA" demonstrates physical strength and ease of handling.
5
High Chemical Stability
"NEOSEPTA" is stable against various kind of chemicals. (See Table-3)
6
High Dimensional Stability
Since "NEOSEPTA" has chemically stable structure, it demonstrates dimensional stability, showing little swelling and shrinking when soaked in chemicals.
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Table-3 Chemical Resistance of NEOSEPTA Membranes
Table-3 Chemical Resistance of NEOSEPTA Membranes
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GRADES AND PROPERTIES
disk Standard Grades and Special Grades
The Standard Grades of membrane are used for general concentration and desalination.
The Special Grades of membrane are used for special applications such as, Diffusion Dialysis, Electrodialysis and other specific applications.
Table-1 "NEOSEPTA" Standard Grades

Table-1 NEOSEPTA Standard Grades
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Table-2 "NEOSEPTA" Special Grades
Table-2 NEOSEPTA Special Grades
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PRECAUTION FOR HANDLING "NEOSEPTA" MEMBRANES
disk To utilize the feature of "NEOSEPTA", the following points should be noted when using "NEOSEPTA"
1
 Do not dry "NEOSEPTA".
2
 Avoid any folding and/or sticking of foreign substances to prevent damage and deterioration of the membrane.
3
 When storing "NEOSEPTA", keep it in a 3% NaCl solution in a dark and cool room.
4
 Do not contact the membrane with the following substances.
· Oxidizing agents such as concentrated nitric acid or
  perchloric acid
· Reducing agents
· Organic solvents
· Ionic organic substances such as surfactant
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Products
NEOSEPTA
EDCORE
NEOSEPTA BIPOLAR
ACILYZER(Electrodialyzers)
ACILYZER(Diffusiondilalyzers)
ACILYZER EDR
MICRO ACILYZER
APPLICATION EXAMPLES OF ION EXCHANGE MEMBRANE
ELECTRONICS
* Production of High Purity Chemicals
* Production of Ultra Pure Water
* Battery Diaphragm
FOOD AND PHARMACEUTICAL
* Demineralization of Cheese Whey
* Demineralization of Organic Acids and Amino Acids
* Desalination of Soy-Sauce
* Stabilization of Wine
* Demineralization, Deacidification of Fruit Juice
* Demineralization of Natural Extract
* Demineralization of Poly-saccharide
* Demineralization of Betaine
* Demineralization and Purification of Pharmaceutical Intermediate
* Organic acid productions from organic salts.
EMVIRONMENTAL CONSERVATION
* Acid and base regeneration from salts.
* Desalination of Leachate
* Removal of Nitrate from Under-Ground Water
OTHERS
* Production of Salt from Sea water
* Production of Drinking Water from Brackish Water
* Desalination of Deep Sea Water
* Acid Recovery from Waste Acid
* Recovery of Valuable Metals
* Recovery of Acid from Pickling Waste

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