petak, 20 okt 2017

Baner
Baner
Baner
Original scientific paper
UDC: 66.018.9:666.32+66.081:67.017
DOI: 10.7251/afts.2017.0916.065D
COBISS.RS-ID 6440472
 
 
 
BENTONITE/IRON OXIDE MAGNETIC COMPOSITES:
CHARACTERIZATION AND APPLICATION AS Pb(II)
ADSORBENTS 
 
Danková Zuzana1, Fedorová Erika1, Bekényiová, Alexandra1
1Institute of Geotechnics, Slovak Academy of Sciences Košice, Slovak Republic, E-mail: Ova adresa el. pošte zaštićena je od spam napada, treba omogućiti JavaSkript da biste je videli
 

ABSTRACT  Full text (pdf)

The natural clay bentonite (B) as adsorbent of lead cations was studied. To enhance its adsorption capacity, the coating by iron oxide particles, in two selected weight ratios: 2:1 (BM1) and 4:1(BM2), was used. The changes of the textural and surface parameters after the modification were studied by the low temperature nitrogen adsorption, XRD and SEM method, Mössbauer spectroscopy. The Pb(II) adsorption experiments were studied under the different conditions, such as pH of the model solutions, contact time and initial metal ion concentration. Higher adsorption rates of BM1 and BM2 samples were observed for lower initial metal ion concentrations.
 
Key words: bentonite, composite, structural properties, adsorption.
 

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