Amberlite XAD4

Summary

Product Identification

AMBERLITE® XAD4 is an industrial grade polymeric adsorbent supplied as white insoluble beads.

Properties

• Matrix: Macroreticular crosslinked aromatic polymer
• Physical form: White translucent beads
• Moisture holding capacity: 54 to 60 %
• Shipping weight: 680 g/L
• Specific gravity: 1.01 to 1.03
• Particle size (Harmonic mean size): 0.49 - 0.69 mm
• Uniformity coefficient: ≤ 2.0
• Fines content: < 0.350 mm : 5.0 % max
• Coarse beads: > 1.18 mm : 5.0 % max
• Surface area: ≥ 750 m²/g
• Porosity: ≥ 0.50 ml/ml

Suggested Operating Conditions

• pH range: 0 - 14
• Maximum temperature limit: 150°C
• Minimum bed depth: 75 cm
• Flow rate (Loading): 2 to 16 BV*/h
• Flow rate (Displacement): 1 to 4 BV/h
• Flow rate (Regeneration): 1 to 4 BV/h
• Flow rate (Rinse): 2 to 16 BV/h

* BV (Bed Volume) = 1 m³ solution per m³ resin

Applications

• Removal of organic pollutants from aqueous wastes, ground water, and vapor streams.
• Removal of organic compounds from aqueous process streams and polar solvents.
• Recovery / recycle of phenolic and aromatic compounds.
• Removal of chlorinated solvents, herbicides, and pesticides from aqueous streams.
• Recovery of organic compounds in environmental and clinical analysis for subsequent identification.

Regenerants / Eluting Agents

• Water miscible organic solvents (methanol, ethanol, acetone, isopropanol, etc.) for hydrophobic compounds.
• Pure solvents for regenerating resin fouled by oils and antifoams.
• Dilute bases (0.1 - 0.5% NaOH) for eluting weakly acidic compounds.
• Strong bases (2-4% NaOH) for regenerating resins fouled with proteins, peptides.
• Dilute acids (0.1 - 0.5% HCl) for weakly basic compounds.
• Dilute oxidising agents (< 0.5%) such as peroxide to enhance the removal of protein fouling.
• Buffer elution for pH sensitive compounds.
• Water where adsorption is from an ionic solution.
• Hot nitrogen or steam for volatile materials.

FDA Clearance

AMBERLITE XAD4 polymeric adsorbent has clearance under FDA Food Additive Regulation 21 CFR 173.65 - Divinylbenzene Copolymer. The product may be used for the removal of organic substances from aqueous foods under the prescribed conditions outlined in 21CFR173.65.

Hydraulic Characteristics

Data for bed expansion and pressure drop as a function of flow rate and water temperature are provided in Figures 4 and 5 of the original document.

Pretreatment

AMBERLITE XAD4 is shipped wet with sodium chloride (NaCl) and sodium carbonate (Na₂CO₃) salts. These should be washed from the adsorbent prior to use by washing with water at a linear flow rate of 5-10 m/h. For sensitive applications, a regeneration with the proposed regenerant is recommended before the first service cycle.

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Disclaimer: This extracted summary may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror