COMPETITIVE SORPTION CHARACTERISTICS OF LEAD-, COPPER-AND CADMIUM-IONS ON FOREST SOIL HORIZONS DEVELOPED ON MUDSTONE, SOSE DAM, GERMANY
Küçük Resim Yok
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Parlar Scientific Publications (P S P)
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The sorption of the heavy metal ions was studied using their solutions with different concentrations and pH values. Scatchard plot analysis was used to investigate the sorption behavior of the metal Pb2+, Cu2+, and Cd2+ ions. The sorption behavior of these ions on sesquioxide and clay minerals with Bw, BC and Bw soil horizons of mudstone obtained from Harz forest drainage basin of Sose Dam (Germany) was studied. Batch equilibrium experiments were performed at 25 degrees C in competitive component sorption systems. A deviation from linearity in the Scatchard plot revealing the presence of multi-model interaction and non-Langmuirean behavior were observed. The sorption behavior of these metal ions was stated by using Freundlich isotherms. Sorption constants and correlation coefficients were calculated from Freundlich plots. In general, the Freundlich model has been adapted very well for the use of the sorption data of metals on the soils obtained from investigated horizons. The results showed that Pb is adsorbed strongly by these forest soil horizons compared to Cu and Cd in triple metal system. It was found that BC-soil horizon at high pH, sesquioxide, and clay content showed the greatest sorption capacity. The coexistence of Pb as a third metal with Cd and Cu has reduced their sorption. In addition, the sorption of Cd and Cu in soil decreases when the pH falls to 3.5 and increases when pH rises up to 6.
Açıklama
Anahtar Kelimeler
Heavy metal ions, sorption, soil horizons, mudstone, Langmuir isotherm, Freundlich isotherm
Kaynak
Fresenius Environmental Bulletin
WoS Q Değeri
Q4
Scopus Q Değeri
Cilt
27
Sayı
3
