Manuscript Number : IJSRST18401113
Geotechnical Characterization of soils for Use as Landfill Liner: A case study of soil samples from the Paynesville Sandstone and Farmington River Formation, Liberia
Authors(6) :-Y. C. Baysah, R. S. Ngumbu, A. K. Fayia, A. S. Moore, J. T. Toe Sr., J. K. Jallah Jr In Liberia, waste management is one of the main challenges faced by municipal authorities, environmental technicians and public health practitioners in their quest to maintain a clean, safe and healthy environment. The construction and operation of a sanitary landfill ensures adequate waste management and, by extension, the protection of both the environment and human receptors. This study presents the results of geotechnical investigations conducted on soils from two sedimentary units of Liberia: Paynesville Sandstone and Farmington River Formation. The intent of the study was to assess the suitability of the soil for use as landfill liner. Three soil samples were collected from each of the two sedimentary units and, using B.S 1377 (1990), soils characteristics such as particle size distribution, permeability, liquid limit, plastic limit, plasticity index and hydraulic conductivity were measured and presented as mean values. Hydraulic conductivity of a sanitary landfill liner is the most important parameter to consider in materials selection. The results of hydraulic conductivity obtained from the study showed that only the samples from Farmington River Formation met the USEPA (1994) and CGRM (2007) requirement of ? 1x10-9 m/sec suitable for use as landfill liner. The mean soil permeability results for the Paynesville Sandstone and Farmington River Formation were 2.5 mL/hr and 0.05 mL/hr respectively; implying that the samples from the Paynesville Sandstone are more permeable and, thus, more susceptible to leaching and groundwater contamination if used as a bottom liner in a landfill design. Based on the findings of this research, it can be concluded that the sample from the Farmington River Formation is more suitable for use as a natural material for landfill liner. The quality of the sample should, however, be improved by addition of small amounts of bentonite.
Y. C. Baysah Landfill liner, Paynesville Sandstone, Farmington River Formation, Liberia Publication Details
Published in : Volume 4 | Issue 11 | November-December 2018 Article Preview
College of Engineering, University of Liberia, Liberia
R. S. Ngumbu
Department of Compliance & Enforcement, Environmental Protection Agency, Liberia
A. K. Fayia
College of Engineering, University of Liberia, Liberia
A. S. Moore
College of Engineering, University of Liberia, Liberia
J. T. Toe Sr.
Department of Compliance & Enforcement, Environmental Protection Agency, Liberia
J. K. Jallah Jr
Department of Compliance & Enforcement, Environmental Protection Agency, Liberia
Date of Publication : 2018-11-30
License: This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 70-75
Manuscript Number : IJSRST18401113
Publisher : Technoscience Academy
Journal URL : https://ijsrst.com/IJSRST18401113
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