Distinguishing Kaolinites and Smectite Clays from Central and Eastern Uganda Using Acidity, pH, Colour and Composition
Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53207#.VLcnXsnQrzE Author(s) I. Z. Mukasa-Tebandeke 1* , P. J. M. Ssebuwufu 1 , S. A. Nyanzi 1 , A. Schumann 2 , M. Ntale 1 , G. W. Nyakairu 1 , F. Lugolobi 3 Affiliation(s) 1 Department of Chemistry, Makerere University, Kampala, Uganda . 2 Department of Geology, Makerere University, Kampala, Uganda . 3 Department of Earth Sciences, Wesleyan University, Middletown, USA . ABSTRACT The Langmuir isotherms of 1-aminobutane in isohexane slurries showed increase in clay acidity with increase in concentration of mineral acid used to leach the clay as well as the temperature at which the clay was thermally activated prior to experimentation involving adsorption of 1-aminobutane. The values of acidity for Central Uganda were low ranging from 0.07 mol/g to 0.32 mol/g yet those for clays from Eastern Uganda were high ranging from 0.1 mol/g to 1.85 mol/g. Based...