Research of the Chemical Composition and Ion Exchange Properties of Karaçeva Bentonite

Year 2016, Volume: 11 Issue: 4, 409 - 413, 30.12.2016

Mehush Aliu , Luljeta Pula-beqiri Sadija Kadriu Milaim Sadiku Nushe Lajçi Mensur Kelmendi

Abstract

The value of pH varies depending on the
activation of bentonite, by increasing the concentration of sulfuric acid,
increases the acidity. With the rise of the pH value, we have a continuous increase of ion
exchange capacity of bentonite, so high values of pH, we have a high capacity
to exchange cations. The ion exchange capacity of natural samples of Karaçeva
bentonite, varies according to the depth of drilling, with increase of the
percentage of activation, have significant increase of ion exchange capacity
for all investigated samples. By experimental measurements, it was found that
the Karaçeva bentonite has good ion exchange properties.

Keywords

natural bentonit, treatment, ion exchange capacity, ennoblement

References

• Alemdaroglu T, Akkus G, Önal, M, Sarikaya, Y, (2003) Investigation of the surface acidity of a bentonite modified by acid activation and thermal treatment, Turk J. Chem. 27, 675-681.
• Amman L, (2003), Cation exchange and adsorption on clays and clay minerals, Dissertation, Faculty of mathematics and natural sciences, Christian-Albrechts-Universität, Kiel.
• Allen WM., (2005) The relationship between plasticity ratio and hydraulic conductivity for bentonite clay during exposure to synthetic landfill leachate, Theses and Dissertations, University of South Florida.
• Amorim LV, Gomes CM, Lira HL, França KB, Ferreira HC, (2004) Bentonites from Boa Vista, Brazil: Physical, Mineralogical and Rheological Properties, Materials Res. 7, 583-593.
• Borden D, Giese R, (2001), Clays Clay Min. 49, 444-445.
• EUBA (2006) The European Association of the Bentonite Producers), www.ima-eu.orgenBentoni.pdf.
• El Hechi, O., Ben Amor, E., Sarasra and Zargouni, F., (2009) Physico-chemical characterization of acid-activated clay: Its industrial application in the clarification of vegetable oils, Surf. Eng. & Appl. Electrochem., 45, 140-144.
• Karimi L, Salem A, Keyvanfar M, (2011) The effects of sodium carbonate concentration on bentonite cation exchange capacity variations during activation, 1st International Iranian New Chemistry Congress, 5-6 May Shiraz.
• Onal M, Sarikaya Y, (2002) The effect of acid activation on some physicochemical properties of a bentonite, Turk J Chem, 26, 409-416.
• Vlasova M, Dominguez G, Kakazey N, Dominguez M, Juarez D, Enriquez Y, (2003), Structural phase transformations in bentonite after acid treatment, Science of Sintering, 35, 155-166.
• Valenzuela, Diaz F, Souza, Santos P., (2001) Studies on the acid activation of Brazilian smectitic clays, Quim. Nova, 24, 345-353.