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SEPLITE ® Weak Base Anion Exchange Resin

The Weak Base Anion Exchange Resin with primary, secondary, tertiary amine or mixed amine group as active functional groups show different strengths of alkalinity. Most weak Base Anion Exchange Resins with mixed amine group equiped a extremely high operating capacity with the ability to remove both strong and weak acids from solution.

There are two kinds of weak base anion exchange resins, Gel type and Macroporous type, which have acrylic backbone, styrene backbone or mixed backbone. Weak base anion exchange resins are more chemically stable and higher resistant to organic fouling than strong base anions.

The weak base anion exchange resin is easier to regenerate than the strong base resin, and can be efficiently regenerated with a small amount of sodium hydroxide.

Weak base anion exchange resins are commonly used in pharmaceutical, food engineering, and chemical engineering, such as the removal of mineral acid, organic acids and other organic materials, especially for removal of high molecular weight organic matters from aqueous solutions under low pH condition.

Typical Applications For Weak Base Anion Resin

Removal of mineral acid

Removal of organic matter

Pure water preparation

Wastewater treatment

Approvals

Kosher Certificate

Halal Certificate

FDA registeration

WQA Gold Seal Certificate

REACH

Category List

SEPLITE MA938 Macroporous type, Acrylic, Free base, organic acid removal

SEPLITE WA667 Gel type, Acrylic, Free base, decoloration of citric acid, sugar and antibiotics

SEPLITE MA940 Macroporous type, Styrene, Free base

SEPLITE MA921 Macroporous type, Styrene, Free base, floating bed

SEPLITE MA939 Macroporous type,Acrylic, Free base, organic acid removal

What is weak acid cation?

SEPLITE ® Weak Acid Cation Exchange Resin

The acidic ion exchange resin is the type of ion exchange resin with functional group of carboxylic acid group (-COOH) . They show weak acidity like acetic acid, having the ability to exchange with bases such as NaOH and weak acid salts such as NaHCO3.

The weak acid cation exchange resins have two kinds of chemical structures, a methacrylic acid type and an acrylic acid type. This makes a difference for the ion exchange ability. The methacrylic acid type can be used at pH above 5, while the acrylic acid type can be used at pH above 4. Even though use is restricted, it is easier to regenerate than a strong acid cation exchange resin.

Weak acid cation resins are suitable in the fields of removal of water dealkalization, carbonate hardness, purification of antibiotics and amion acid. It is not used much for water processing because of the less acidity, but for antibiotic and amino acid purification.

Typical Applications For Weak Acid Cation Exchange Resin

Bicarbonate alkalinity from water

Transition metals recovery

Water dealkalization

Purification of antibiotics and amion acid

Approvals

Kosher Certificate

Halal Certificate

FDA registeration

WQA Gold Seal Certificate

REACH

Category List

SEPLITE MC280N Macroporous type,Weak acid, Acrylic,  Na+Form

SEPLITE MC280H Macroporous type,Weak acid, Acrylic,  H+Form

SEPLITE MC280K Macroporous type,Weak acid, Acrylic, H+/K+ Form, food grade,

SEPLITE MC290 Macroporous type,Weak acid, Acrylic,  H+Form,food grade

Periodic Table Resin

Lanthanides

The lanthanide series of chemical elements comprises the fifteen metallic chemical elements withatomic numbers 57 through 71, from lanthanum through lutetium . These fifteen lanthanide elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements.

Actinides

The actinide series encompasses the 15 metallic chemical elements with atomic numbers  from 89 to 103, actinium through lawrencium.The actinide series derives its name from the first element in the series, actinium.They all have very large atomic andionic radii and exhibit an unusually large range of physical properties. While actinium and the late actinides (from americium onwards) behave similarly to the lanthanides, the elements thorium through neptunium are much more similar to transition metals in their chemistry.