Adsorption of chromium(VI) metal ions from aqueous solution using hexagonal ZnO particles: Equilibrium, kinetic and thermodynamic modelling studies
Yükleniyor...
Tarih
2014
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Zinc oxide powders having hexagonal plate particles were prepared by homogeneous precipitation from boiling aqueous solutions that contained excess urea and 0.075 (Z075) and 0.300 (Z300) M Zn2+. The equilibrium, kinetic and thermodynamics of the adsorption of chromium (VI) from aqueous solution onto Z075 and Z300 were investigated. Thermodynamic parameters and K-# equilibrium constant of activation were calculated. Langmuir, Temkin and Dubinin-Radushkevich (D-R) isotherm models were used to describe the adsorption of Cr(VI) onto ZnO powders. The monomolecular adsorption capacity of Z075 and Z300 was determined as 980 and 1050mgg(-1) for Cr(VI), respectively.
Açıklama
Anahtar Kelimeler
chromium, adsorption, zinc oxide powders, isotherms, kinetics, thermodynamics
Kaynak
Canadian Journal Of Chemical Engineering
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
92
Sayı
3
Künye
closedAccess
