Synthesis of diethylaminoethyl dextran hydrogel and its heavy metal ion adsorption characteristics
Yükleniyor...
Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Sci Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Epichlorohydrin-crosslinked diethylaminoethyl dextran (DEAE-D/ECH) hydrogel was synthesized by intermolecular side-chain reaction of DEAE-D hydroxyl groups with monomeric crosslinking agent, ECH. Swelling ability, adsorption capacity and metal removal of the hydrogel were profoundly determined and some structural parameters for the hydrogel such as volume of non-swollen gel, percentages of gellation, swelling ratio and equilibrium water content were evaluated in this study. The ability of removing heavy metal ions from Orontes River by the synthesized hydrogel, thoroughly characterized by photometric spectrometer and the adsorption characteristics of metal ions, was investigated as well as surface morphologies of the hydrogel before and after metal adsorption were examined by SEM. Structure of DEAE-D/ECH gel was analyzed by FTIR, TGA, and DSC. Gellation point of binary system reaction between DEAE-D and ECH was determined via monitoring viscosity changes during reaction. The order of affinity based on amount of metal ion uptake was found as follows: Zn2+ > Mn2+ > Pb2+ > Cd2+. (C) 2012 Elsevier Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
Diethylaminoethyl-dextran, Epichlorohydrin, Crosslinking, Hydrogel, Heavy metal, Orontes River
Kaynak
Carbohydrate Polymers
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
90
Sayı
2
