Immobilization of Two Azacrown Ethers on Chitosan: Evaluation of Selective Extraction Ability Toward Cu(II) and Ni(II)
Küçük Resim Yok
Tarih
2009
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
TAYLOR & FRANCIS INC
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Two Schiff base-type chitosan-azacrown ethers were prepared by a reaction of chitosan (CTS) with N-(4'-formylphenyl)aza-crown ethers, and they were converted to secondary-amino derivatives by the reduction of CTS-azacrown ethers with sodium borohydride. Their structures were confirmed by elemental analysis, infrared spectra and thermogravimetric analysis. The ability of these adsorbents to extract Cu(II) and Ni(II) ions from water by a solid-liquid extraction process was studied. The effects of adsorbent amount, contact time and pH on the adsorption of CTS-azacrown ethers were investigated. The extraction results showed that CTS-azacrown ethers had good sorption capacities for Cu(II) ions in the coexistence of Ni(II) ions.
Açıklama
Anahtar Kelimeler
Chitosan, modification, heavy metal, macrocyclics, ion binding, solid-liquid extraction
Kaynak
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
46
Sayı
8