Bulletin of Pure & Applied Sciences- Geology
  • Year: 2014
  • Volume: 33f
  • Issue: 1and2

Distinguishing kaolinites and smectite clays from central and eastern uganda using acidity, pH, colour and composition

  • Author:
  • I.Z. Mukasa-Tebandeke1,, P.J.M. Ssebuwufu1, S.A. Nyanzi1, A Schumann3, N.H. Kirsch1, H Ssekaalo1, G.W. Nyakairu1, F Lugolobi2
  • Total Page Count: 19
  • Page Number: 35 to 53

1Makerere University, Department of Chemistry, Box 7062, Kampala

2Wesleyan University, Department of Earth Sciences, USA

3Makerere University, Department of Geology, Box 7062, Kampala

*Person to whom correspondences can be made

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 0.1mol/g to 1.85mol/g. Basing on acidity, pH, elemental and mineral compositions, the clays from Central Uganda were found to be kaolinites or halloysites yet Eastern Uganda clays were resolved to contain nontronite and kaolinite.

Keywords

Clay acidity, Central Uganda, Nontronite and kaolinite, Langmuir isotherms, 1-aminobutane Eastern Uganda clays