Diffusion of municipal waste contaminants in compacted lateritic soil treated with bagasse ash

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doi: 10.1007/s12665-012-2168-z
Authors:Eberemu, Adrian O.; Amadi, Agapitus A.; Edeh, Joseph E.
Author Affiliations:Primary:
Ahmadu Bello University, Department of Civil Engineering, Zaria, Nigeria
Other:
Federal University of Technology, Nigeria
University of Agriculture, Nigeria
Volume Title:Environmental Earth Sciences
Source:Environmental Earth Sciences, 70(2), p.789-797. Publisher: Springer, Berlin, Germany. ISSN: 1866-6280
Publication Date:2013
Note:In English. 53 refs.; illus., incl. 6 tables
Summary:Compacted clay can minimize infiltration of liquid into waste or control the release of contaminated liquids to the surrounding soils and groundwater. Compacted lateritic soil treated with up to 12 % bagasse ash and municipal solid waste (MSW) leachate sourced from a domestic waste land fill were used in diffusion test studies to access the diffusion characteristics of some inorganic species present in the municipal solid waste leachate. Diffusion set-up were prepared containing 0, 4, 8 and 12 % bagasse ash-soil mixes compacted at 2 % wet of optimum using the modified proctor effort. The set up was saturated with water for 30 days before the introduction of MSW leachate and initiation of diffusion test for another 90 days. After diffusion testing, water content within the soil column showed a decrease with depth. Diffusion test results generally showed that diffusion is an active means of transport of chemical species even at very low flow rates in the compacted soil-bagasse ash mixes, and the effective diffusion coefficient is affected by bagasse ash. The pore fluid concentration profile for the various chemical species tested showed that the compacted soil-bagasse ash mix has the capacity to attenuate Ca2+, Pb2+ and Cr3+ ions. Copyright 2012 Springer-Verlag Berlin Heidelberg
Subjects:Ash; Bioremediation; Characterization; Compactness; Controls; Diffusivity; Ground water; Landfills; Laterites; Leachate; Mathematical models; Physical properties; Phytoremediation; Pollutants; Pollution; Remediation; Soil mechanics; Soil profiles; Soil treatment; Soils; Solid waste; Stability; Tortuosity; Transport; Waste disposal; Waste management
Record ID:2013091582
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany
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