The possibility of removing heavy metals from waste waters by natural zeolites
1997
Pasalic, S. | Grbavcic, M. | Barbic, F. | Pljakic, E. (Institut za tehnologiju nuklearnih i drugih mineralnih sirovina, Beograd (Yugoslavia))
Over the last several years, the investigations of the natural zeolites application in the sorption processes have been intensified. Purification of waste waters in order to remove lead, cadmium, copper and other heavy metals, is one significant example of such application. In this paper, the investigations results on characteristics of the natural and chemically activated zeolites from the region of Vranje (Serbia, Yugoslavia), are presented. The experiments with zeolites were performed after determination of their physico-chemical characteristics. Adsorptive characteristics were investigated under laboratory conditions, in a liquid medium, depending on granulation and concentration of the heavy metals. As the obtained results show, these natural materials can be used to remove heavy metals from the waste waters.
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