Evaluation of the performance of calix[8]arene derivatives as liquid phase extraction material for the removal of azo dyes
Küçük Resim Yok
Tarih
2008
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE BV
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This pit per presents a study on the removal of azo dyes (Reactive Black 5, Trapaeolin 000, Methyl Orange and Direct Violet 51) with calix[n]arene derivatives from aqueous solution into the organic phase in order to explore the potential use of calixarenes as low-cost efficient extractants for wastewater dye removal. The carboxylic acid derivative of calix[8]arene shows highest affinity towards the azo dyes. The influence of NaCl (present in the solution) on extraction process was also Studied. The extent of the dye removal increased with the addition of NaCl. The proposed extraction mechanism involves several kinds of interactions: electrostatic repulsion between carboxylic acid groups of calix[8]arenes and sulfonate groups of azo dyes, hydrogen bonding and formation of an inclusion complex due to three dimensional cavity type calix[n]arene molecules through host-guest interactions. (C) 2008 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
calix[4]arenes, calix[8]arenes, solvent extraction, azo dyes
Kaynak
JOURNAL OF HAZARDOUS MATERIALS
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
158
Sayı
1
