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  • Synthesis and application of calix[4]arene based resin for the removal of azo dyes.

Synthesis and application of calix[4]arene based resin for the removal of azo dyes.

Journal of hazardous materials (2009-07-31)
Muhammad Afzal Kamboh, Imam Bakhsh Solangi, S T H Sherazi, Shahabuddin Memon
ABSTRACT

The present study describes a novel synthetic method for the immobilization of calix[4]arene (II) onto the surface of modified Amberlite XAD-4 resin (4), which does not require the derivatization of calixarene moiety. The novel calix[4]arene based resin (C4 resin) 5 was used as sorbent for the removal of azo dyes. Batch-wise sorption study was carried out and observed that the C4 resin (5) is more effective as compared to compound II as well as pure Amberlite XAD-4 resin (1) to remove the selected dyes [i.e. Reactive Black-5 (RB-5), Reactive Red-45 (RR-45) and Congo Red (CR)]. The effect of sorbent dosage and pH on % sorption was studied. During the extraction process, various kinds of interactions such as electrostatic repulsion, deprotonation of the hydroxyl groups of C4 resin, dissociation of reactive dyes into anions/cations and structural variations were monitored and found that they are highly pH dependent.

MATERIALS
Product Number
Brand
Product Description

Supelco
Amberlite XAD4
SKU
Pack Size
Availability
Price
Quantity
Supelco
Amberlite XAD4, 20-60 mesh
SKU
Pack Size
Availability
Price
Quantity
Supelco
Amberlite XAD4, 20-60 mesh
SKU
Pack Size
Availability
Price
Quantity
Supelco
Amberlite XAD4, 20-60 mesh
SKU
Pack Size
Availability
Price
Quantity