The equlibrium isotherm for lead removal by natural zeolite clinoptilolite: a comparison of batch and column methods (CROSBI ID 520510)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Perić, Jelena ; Vukojević Medvidović, Nediljka ; Trgo, Marina
engleski
The equlibrium isotherm for lead removal by natural zeolite clinoptilolite: a comparison of batch and column methods
Natural zeolite clinoptilolite has the property of ion exchange of its own hydrated Na, K, Ca and Mg ions with heavy metal ions from water solutions. The ion exchange process can be performed by the batch method or by the column method. This paper compares the equilibrium experimental results for ion exchange of lead ions on natural zeolite clinoptilolite, given from two different experimental performances by the batch and by the column method. The experimental points fit the Langmuir isotherm model better than the Freundlich one for batch and column experimental performance. The better fit of the Langmuir isotherm equation indicates that removal of lead ions by natural zeolite clinoptilolite occurs on a homogeneous surface, by monolayer sorption on internal and external particle surfaces, with a finite number of identical sites, and with no interaction between bound ions. The Langmuir model is used for calculation and comparison of exchange capacities that equal 149.25 mg Pb/g for the batch method and are somewhat higher and equal 175.44 mg Pb/g zeolite for the column method, which is one of advantages of latter method for its practical application in wastewater treatment.
clinoptilolite; lead; Langmuir isotherm; Freundlich isotherm
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Podaci o prilogu
92-x.
2006.
objavljeno
Podaci o matičnoj publikaciji
MECC 06, Abstract Book
Vlahović, Igor ; Tibljaš, Darko ; Durin, Goran ; Biševac, Vanja
Zagreb: Faculty of Science, Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb
Podaci o skupu
3rd Mid-European Clay Conference
poster
18.09.2006-23.09.2006
Opatija, Hrvatska