Interaction of metals with humic acid isolated from oxidized coal
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Tarih
2007
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Hard
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The sorption behaviour of divalent cations M2+ (Cu, Pb and Zn) and trivalent cations M2+ (Fe, Al) with humic acid isolated from oxidized coal (Hazro,SE Anatolia,Turkey) was followed in aqueous solution. Coal humic acid and metal ion interaction was investigated with special emphasis on the effects of pH, metal ion concentration and humic acid concentration. It has been found that the interaction of humic acid with metal ions in solution increases with pH, decreases with metal ion concentration and increases with humic acid concentration. The differences in sorption ability of particular metal ions on oxidized coal-derived humic acid are Fe> Ph> Cu> A> Zn and Fe> Pb> A> Cu> Zn at pH 2.5 and 3.5, respectively, while they are Fe=Pb=Cu=Al> Zn at both pH 4.5 and 5.5. The interaction of some trivalent (Fe, Al) and divalent(Cu, Pb, Zn) metal ions with humic acid prepared from coal was also studied using FTIR spectroscopy. This has proven helpful with respect to metal binding to understand better the potential sites of binding within the humic acid. Infrared spectroscopy showed the participation of COOH and OH groups in binding to the metal ions.
Açıklama
Anahtar Kelimeler
Soil Pollution, Humic, Coal, Sorption, Cation
Kaynak
Polish Journal of Environmental Studies
WoS Q Değeri
Q4
Scopus Q Değeri
Q2
Cilt
16
Sayı
5
