Naslov
Removal of copper and lead by clinoptilolite and clinoptilolite-iron system

Autori
Kragović, Milan ; Miličević, Sonja ; Daković, Aleksandra ; Perić, Jelena ; Trgo, Marina ; Vukojević Medvidović, Nediljka ; Ugrina, Marin ; Sekulić, Živko ; Nuić, Ivona

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Zeolite 2010 / O. Petrov, Y.K. Tzvetanova - Sofija : INZA, 2010, 149-150

Skup
8th International Conference on the Occurence, Properties and Utilization of Natural Zeolites

Mjesto i datum
Sofija, Bugarska, 10.07.2010. - 18.07.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
natural zeolite; lead; copper; iron modification

Sažetak
The increasing levels of toxic metals (copper, zinc, cadmium, lead, nickel, chromium, etc.) that are discharged to the environment as industrial wastes, represent a serious threat to human health, living resources and ecological systems. Due to their tendency to accumulate in living organisms, causing various diseases and disorders, the treatment methods for heavy metals removal are essential for environmental and human health protection (Šljivić et al. 2009). Among numerous methods for water purification, sorption technologies have gained the most attention because of low cost and easy operation. Natural materials, such as zeolites and clay minerals are the commonly used sorbents for heavy metals removal. Iron oxides are also active sorbents and play an important role in the reaction behavior of many ions in environmental sediments. Many researchers have tried to synthesize mixed systems of iron oxides and clay minerals or zeolites and they have proven that these systems were able to adsorb high concentrations of inorganic species. Recently, iron-overexchanged clinoptilolite (Clino-Fe) was tested for removal of Mn2+ ions from drinking water and in Cu2+ ions adsorption from KCl solutions at different pH values (Dimirkou and Doula, 2008). They reported that Clino-Fe system had much higher adsorption capacity for Mn^2+ and Cu^2+ ions than unmodified clinoptilolite. The objective of the current investigation was to synthesize the clinoptilolite-iron system under strongly basic conditions and to investigate if the new sorbent has higher sorption capacity for lead and copper than the unmodified clinoptilolite.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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