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Omobolaji Taofeek Opafola
Department of Civil Engineering, Olabisi Onabanjo University

Adebola A Adekunle
Department of Civil Engineering, Federal University of Agriculture, Abeokuta

Adedayo Adekunle Badejo
Department of Civil Engineering, Federal University of Agriculture, Abeokuta

Olayemi Johnson Adeosun
Department of Agricultural & Bio-resources Engineering, Federal University of Agriculture, Abeokuta


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Potentials of bentonite enhanced termite mound soil for bottom lining in waste containment system

Omobolaji Taofeek Opafola, Adebola A Adekunle, Adedayo Adekunle Badejo, Olayemi Johnson Adeosun
  J. Degrade. Min. Land Manage. , pp. 2185-2191  
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The sole purpose of a compacted landfill liner is to contain and mitigate the impact of leachate on the environment. This research assessed the engineering properties of bentonite enhanced termite mound mixture to ascertain their suitability as an alternate landfill liner. The mixture of mound soil and bentonite was proportioned by percentage weight as (100:0), (95:5), (90:10) and (85:15) respectively. The compaction analysis reveals an optimum moisture content ranging from 13.80% to 18.52% and a maximum dry density that varied from 1.72 g/cm3 to 1.88 g/cm3. The hydraulic conductivity result of 15% bentonite-mound soil mixture (0.23 x 10-9 m/s) established hydraulic conductivity less than 1 x 10-9 m/s, which satisfied the criteria for landfill liner. Hence, a mixture of 15% bentonite enhanced mound soil is found suitable as an alternate bottom liner.


bentonite; compaction; hydraulic conductivity; landfill liner; termite mound

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