Quality of Life (Banja Luka) 7(3-4): 0-0

 

Removal of Cr(VI) From Water Resources by Using Different Raw Inorganic Sorbents
HAMDIJE MEMEDI1, KATERINA ATKOVSKA2, KIRIL LISICHKOV2*, MIRKO MARINKOVSKI2, STEFAN
KUVENDZIEV2, ZORAN BOZINOVSKI3, ARIANIT A. REKA1
1Faculty of Natural Sciences and Mathematics, State University of Tetovo, str. Ilindenn.n., 1200 Tetovo, Macedonia
2Faculty of Technology and Metallurgy, University “Ss. Cyril and Methodius”, Rugjer Boskovic 16, Skopje, Macedonia
3Public Enterprise, “Water Supply and Sewage”, Center for Sanitary Control, Skopje, Macedonia, klisickov@yahoo.com
 

 

Abstract: Natural minerals from different localities in the Republic of Macedonia are selected for elimination of Cr(VI) ions from water resources. For that aim are selected: aksil (Kriva Palanka), trepel (Bitola), SiO amorphous (Ko-zuf), pemza (Bojanciste). In this study, their adsorption capacity is analyzed using spectrophotometric method (UV/VIS Spectrophotometer). Results from the spectrophotometric analysis in all used examples gave us insight for the starting concentration of Cr(VI) before adsorption and concentration after adsorption. The physical, chemical and mineralogi- cal characteristics of adsorbents are studied. XRD, TGA-DTA and FT-IR analysis are used for characterization of natural mineral materials. The surface area of the sorbents were measured by BET method. With aim to determine the optimum pH value for maximal removal of Cr(VI) ions, the point of zero charge, pH, for investigated materials were obtained. The aim of the study is to select which adsorbent is more efficient for elimination of Cr(VI) from water resources. According to obtained results all of them were successful in elimination of Cr(VI), but more efficient and economic is trepel.

Keywords: Cr(VI), water resources, adsorption, natural minerals
 

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