Weak Base Anion Resin for Efficient Water Treatment | High Capacity Weak Base Resin for Ion Exchange

Weak Base Anion Exchange Resin D301 FC

D301 FC is polystyrene skeleton macroreticular weakly basic anion exchange resin, containing the -n (CH3)₂, weak alkaline resin in alkali type, easy to regenerate, working exchange capacity is 3 times of alkali type, nai organic pollution.Using unique and processes, and thus has high mechanical strength and chemical stability, widely used in water treatment and desalination of sugar decolorizing, can also be used for the refinement of organic matter and the treatment of wastewater containing chromium.

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Product Description

Index

Name	Specification
Appearance	Opalescent to light yellow opaque spherical beads
Polymer Structure	Polystyrene crosslinked with divinylbenzene
Functional Group	-N(CH₃)₂
Ionic Form	Free amine
Weight Exchange Capacity	≥4.8mmol/g
Volume Exchange Capacity	≥1.45mmol/ml
Real Density (g/ml）	1.03~1.06g/ml
Bulk Density (g/ml)	0.65~0.72 g/ml
Water Retention Capacity	48%~58%
Particle Size Range	0.45~1.25 mm≥95
Whole Bead Count（%）	≥95%
Uniformity Coefficient	≤1.60

Reference Operation Conditions

Maximum operating temperature	120℃
Resin filling height	1~3m
Operating velocity	2~10BV/h
Backwash velocity	4~10BV/h
Regeneration (desorption) velocity	1~2BV/h
Regeneration agent	2BV3~5%HCI，2BV2~4% NaOH

Application

Water treatment

Sugar decolorizing

Refined organic matter

Wastewater treatment

Corresponding Brands

Purolite A100

Dowex66

Amberlite IRA-93

Precautions

Resin should be wet state preservation. The best temperature is above 0℃. Resin should be put into a closed space or add in salt water of 5% or above if not used for a long time.Should be anti-freezing during transportation. Do not place heavy objects on the resin in case being crashed.

Generally requires alkali- water - acid - water flow path for processing. Strict requirement needs three circulation before coming to final ion kenel.

Need to consider different transformation expansion rate to set aside enough space to prevent resin overflow and ensure the appropriate liquid level height; Column diameter ratio should be within a reasonable range and avoid bias current; Use wet packed column or back-flushing to wash away bubbles inside resin layer.

Before liquid going into the resin column, steps as flocculation, filtration, or sand-filtration should be taken so that it doesn’t jam resin pore with suspended solids .

Resin inside the column that hasn’t been used for a long time should be storaged outside of the column after washing, or adding salt water in the salt resistant medium while keeping liquid level not dehydrated with usual backwashing to loosen resin in case of agglomeration.

Weak Base Anion Exchange Resin D301 FC FAQ

What is Weak Base Anion Exchange Resin D301 FC used for?

It is mainly used for deacidification, decolorization, and removal of organic matter in water treatment.

What is the functional group of D301 FC?

It contains tertiary amine groups, providing weak base anion exchange capability.

Is D301 FC suitable for use in food or pharmaceutical applications?

Yes, D301 FC is food-grade and suitable for high-purity applications.

How is D301 FC resin regenerated?

It is regenerated using dilute sodium hydroxide or ammonia solution.

Can D301 FC remove strong inorganic acids from water?

No, it is ineffective against strong mineral acids like HCl or H2SO4.

What industries commonly use D301 FC resin?

It is widely used in food processing, pharmaceuticals, and fine chemical industries.

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