Diethylaminoethyl dextran/epichlorohydrin (DEAE-D/ECH) hydrogel as adsorbent for murexide
Yükleniyor...
Dosyalar
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Desalination Publ
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study describes the dyestuff removal ability of diethylaminoethyl-dextran-epichlorohydrin (DEAE-D-ECH) polymeric adsorbents. The interaction between DEAE-D-ECH hydrogel and a water-soluble dyestuff, murexide (Mu), was investigated. The effect of different parameters on Mu adsorption efficiency was examined in detail. The equilibrium swelling capacity of DEAE-D hydrogel was determined by swelling in water and dye solution. Scanning electron microscopy micrographs and FTIR spectra, before and after the adsorption of Mu on the hydrogel, were used to explain the adsorption. Additionally, kinetic adsorption ability was well described by the pseudo-second-order kinetic model. The equilibrium data were best described by the Langmuir isotherm model. According to the calculated thermodynamic parameters (Delta G degrees, Delta H degrees, and Delta S degrees), the adsorption process is spontaneous and endothermic.
Açıklama
Anahtar Kelimeler
Diethylaminoethyl-dextran-epichlorohydrine hydrogel, Dye adsorption, Murexide, Adsorption kinetic model, Swelling
Kaynak
Desalination and Water Treatment
WoS Q Değeri
Q2
Scopus Q Değeri
Q3
Cilt
57
Sayı
15
