An Excellent Arsenic(V) Sorption Behavior of P-tert-butylcalix[8]areneoctamide Impregnated Resin
Yükleniyor...
Dosyalar
Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier France-Editions Scientifiques Medicales Elsevier
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The present article describes the arsenic(V) extraction behavior of p-tert-butylcalix[8]-areneoctamide (3) and of a resin (4) impregnated with 3. Liquid-liquid and solid-liquid (column sorption) extraction studies were carried out to optimize various experimental parameters such as pH, extraction effeciency and column stability. Thermodynamic studies based upon Temkin and Flory-Hugins models reveal that the sorption was spontaneous and exothermic. The values of correlation coefficients (R2) show that Langmuir and Freundlich isotherm models are best fit to describe the sorption equilibrium. Application of 4 to real samples indicates a slight decrease (5-7%) in extraction efficiency of 4 because of high concentration of total dissolved salts (TDS). It is deduced that 4 is highly effective for the removal of arsenic(V) at a wide range of pH and attains a maximum value, i.e. 99% at pH 4. The impregnated resin is easy to synthesize from cheap materials. It is more efficient and easily regenerable as compared to already reported resins.
Açıklama
Anahtar Kelimeler
Calixarene, Arsenic(V) sorption, Impregnation, Langmuir/Freundlich isotherm, Solid-phase extraction, Flory-Huggins model
Kaynak
Comptes Rendus Chimie
WoS Q Değeri
Q2
Scopus Q Değeri
Q3
Cilt
13
Sayı
Künye
Qureshi, I., Memon, S., Yılmaz, M., (2010). An Excellent Arsenic(V) Sorption Behavior of P-tert-butylcalix[8]areneoctamide Impregnated Resin. Comptes Rendus Chimie, (13), 1416-1423. Doi: 10.1016/j.crci.2010.02.007
