Application of the FT-IR/PAS and DRS Methods for Studying Heavy Metal Ions Sorption οn the Inorganic Sorbents

P. Ruseka, Z. Hubickib, G. Wójcikb and A. Debczakc a Fertilizers Research Institute, al. 1000-lecia Państwa Polskiego 13a, 24-100 Puławy, Poland b Department of Inorganic Chemistry, University of Maria Curie Skłodowska, Pl. M. Curie Skłodowskiej 3, 20-031 Lublin, Poland c Department of Chemical Technology, University of Maria Curie Skłodowska, Pl. M. Curie Skłodowskiej 3, 20-031 Lublin, Poland

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The scope of this study was the removal of heavy metal ions, ammonium and organic substances by ion exchange from municipal wastewaters. Clinoptilolite, bentonite, and palygorskite are especially interesting in the group of inorganic sorbents because of their specific physico chemical properties. Specific surface areas and pore distributions were determined for the above sorbents. Sorption kinetics of Zn(II), Cu(II), Ni(II), Pb(II) and ammonium ions in synthetic solutions and wastewaters were investigated on the above sorbents. Ion sorption process was carried out with a static method at various phase contact times. The atomic adsorption spectroscopy method was used for measurements of heavy metal contents. The adsorption process was found to be pH and concentration dependent. The removal mechanism of metal ions was by adsorption and ion exchange processes. The FT IR photoacoustic spectroscopy method was used to study mechanism of Zn(II), Cu(II), Ni(II), Pb(II) and ammonium ions sorption on the clinoptilolite, bentonite and palygorskite. The spectra of FT-IR/PAS before and after sorption of Zn(II), Cu(II), Ni(II), Pb(II) and ammonium ions were investigated.

DOI: 10.12693/APhysPolA.116.407 PACS numbers: 82.80.Kq, 81.70.Cv, 82.50.-m