Removal Characteristics of Cd(II), Cu(II), Pb(II), and Zn(II) by Natural Mongolian Zeolite through Batch and Column Experiments

Title
Removal Characteristics of Cd(II), Cu(II), Pb(II), and Zn(II) by Natural Mongolian Zeolite through Batch and Column Experiments
Authors
Tserennyam Batjargal양중석김도형백기태
Keywords
adsorption isotherm; heavy metals; ion-exchange; natural zeolite; precipitation
Issue Date
2011-05
Publisher
Separation science and technology
Citation
VOL 46, NO 8, 1313-1320
Abstract
The removal characteristics of Cd(II), Cu(II), Pb(II), and Zn(II) from model aqueous solutions by 5 natural Mongolian zeolites were investigated. The adsorption of metals on zeolites reached a plateau value within 6 h. The adsorption kinetic data were fitted with adsorption kinetic models. The equilibrium adsorption capacity of the zeolites was measured and fitted using Langmuir and Freundlich isotherm models. The order of adsorption capacity of zeolite was Pb(II)>Zn(II)>Cu(II)>Cd(II). The maximum adsorption capacity of natural zeolite depends on its cation exchange capacity and pH. The leaching properties of metals were simulated using four leaching solutions. The results show that natural zeolite can be used as an adsorbent for metal ions from aqueous solutions or as a stabilizer for metal-contaminated soils.
URI
http://pubs.kist.re.kr/handle/201004/40327
ISSN
0149-6395
Appears in Collections:
KIST Publication > Article
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