Removal of Fluoride from water by Al(III)-loaded and Al(OH)3-coated chelating resin
Küçük Resim Yok
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor and Francis Inc.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
An Al(III)-loaded and Al(OH)3-coated chelating resin Lewatit TP 260 was utilized for the removal of F- from aqueous solutions. Both forms of resin showed superior properties in the removal of F-. Removal performances of such resins were investigated extensively by adsorption isotherms and kinetic tests. It was revealed that maximum adsorption capacity of Al(OH)3-coated resin (0.55 mg/g) was higher than Al(III)-loaded resin (0.40 mg/g). The adsorption kinetics of both resins fitted well with the pseudo-second-order equation. The initial adsorption rate of Al(OH)3-coated resin was approximately seven times greater than Al(III)-loaded resin. The equilibrium isotherms have been investigated by using Langmuir and Freundlich isotherm equations and the obtained experimental data were best described by Langmuir model. The removal of F- by both forms of resin was accomplished by an anion-exchange mechanism. In the presence of Cl- and (Formula presented.) , removal performances of resins did not vary however, when the Al(III)-loaded resin was used, the presence of (Formula presented.) species reduced the removal efficiency of such resin. © 2015 Balaban Desalination Publications. All rights reserved.
Açıklama
Anahtar Kelimeler
Aminomethylphosphonic acid, Anion exchange, Chelating resin, Fluoride, Lewatit TP 260
Kaynak
Desalination and Water Treatment
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
57
Sayı
34
