DELINEATION OF LEACHATE PLUME MIGRATION USING GEO-ELECTRICAL RESISTIVITY ON OTOFURE DUMPSITE IN BENIN CITY, NIGERIA
Keywords:
Leachate, Otofure, Imaging, Electrical Resistivity, DumpsiteAbstract
In Nigeria, thousands of sites have been contaminated by wide variety of wastes due to improper planning and sighting of dumpsites. Most of these dumpsites are located within the city metropolis thereby constituting environmental pollution to both the atmosphere, surface and subsurface. Geophysical investigations involving the use of 2D electrical resistivity imaging (ERI) techniques have been carried out at Otofure dumpsite Southern Nigeria to study the Leachate plume migration from the dumpsite and ascertain if the leachate migration has infiltrated into the groundwater. Five (05) high-resolution 2D electrical resistivity images were acquired using the Wenner array configuration with minimum electrode separation of 5m and profile separations of 20m The roll-along technique was employed to cover all the profile length of 200m each. The acquired data were processed to display the variations of electrical resistivities using the RES2DINV software. The results from each of the profiles except profile 3, showed that leachate from the
dump has migrated to a depth of 39m and this could pose a serious threat to the aquifer in the study area. Even though there has not been any reported outbreak of waterborne disease linked to the dumpsite, it would be in the best interest of the community to recommend decommissioning of site because it has been surrounded by residential settlements.
Downloads
References
Christensen, T.H., Kjeldsen, P., Bjerg, P.L., Jensen, D.L., Christensen, J.B., Baun, A., Albrechtsen, H.J., and Heron, G., 2001. Biogeochemistry of landfill leachate plumes. Applied Geochemistry, 16, 659-718
L. B. Osazua and N. K. Abdullahi, “Geophysics Techniques for the study of Groundwater Pollution, A Review”. Nigerian Journal of Physics, 20(1):163 – 174, 2008.
C. Bernstone and T. Dahlin., Assessment of two automated electrical resistivity data acquisition systems for landfill location surveys: Two case studies. Journal of Environmental and Engineering Geophysics Vol. 4, (1999) 113.
H. Rosqvist, T. Dahlin, A. Fourie, L. Röhrs, A. Bengtsson and M. Larsson, Mapping of leachate plumes at two landfill sites in South Africa using geoelectrical imaging techniques. Sardina proceedings of the 9th international waste management and landfill symposium (2003).
A. T. Ustra, V. R. Elis, G. Mondelli, L. V. Zuquette and H. L. Giacheti., Case study: A 3D resistivity and induced polarization imaging from downstream a waste disposal site in brazil. Environmental Earth Sciences Vol. 66(3), (2012) 763-772.
W. E.Woldt, M. E. Hagemeister and D. D. Jones, Characterization of an unregulated landfill using surface-based geophysics and geostatistics. Ground water vol. 36(6) (1998), 966-974.
Naudet V, Gouiry JC, Girard JF, Mathieu F, Saada A (2014) 3D electrical resistiity tomography to locate DNAPL contamination around a housing estate. Near Surface Geophys 12(3):350–351
Ogilvy R, Meldrum P, Chambers J, Williams G (2002) The use of 3D electrical resistivity tomography to characterize waste and leachate distribution within a closed landfill, Thriplow, UK. J Environ Eng Geophys 7(1):11–18
Oladapo M.I, Adeoye-Oladapo O.O, Adebobuyi F.S (2013) Geoelectrical study of major landfills in the Lagos Metropolitan Area, Southwestern Nigeria. Int J Water Resour Environ Eng 5(7):387–398
Calson N, Hare J, Zonge K (2001) Buried landfill delineation with induced polarization: progress and problems. https ://doi.org/10.4133/1.29229 24
Ramalho EC, Dill AC, Rocha R (2013) Assessment of leachate movement in a sealed landfill using geophysical methods. Environ Earth Sci 68(343–354):1742–1748
Ameloko AA, Ayolabi EA (2018) Geophysical assessment for vertical leachate migration profile and physiochemical study of groundwater around the Olusosun dumpsite Lagos, south–west, Nigeria. Appl Water Sci 8:142. https ://doi.org/10.1007/s1320 1-018-0775-x
Amusan AA, Ige DV, Olawale R (2005) Characteristics of soils and crops uptake of metals in municipal waste dumpsites in Nigeria. J Hum Ecol 17(3):167–171
Ighodalo and Okanigbuan Trans. Of NAMP Ayolabi EA, Oluwatosin LB, Ifekwuna CD (2015) Integrated geophysical and physiochemical assessment of Olushosun sanitary landfillsite, southwest Nigeria. Arab J Geosci 8(6):4101–4115
Cardarelli E, Di Filippo G (2014) Integrated geophysical surveys on waste dumps: evaluation of physical parameters to characterize an urban waste dump (four case studies in Italy). Waste Manag Resour 22(5):390–402
El Maguiri A, Kissi B, Idrissi L, Souabi S (2016) Landfill site selection using GIS, remote sensing and multicriteria decision analysis: case of the city of Mohammedia. Bull Eng Geol Environ, Morocco. https//doi.org/10.1007/s1006 4-016-0889-
Omorogieva, 2016, Analysis of heavy metal in waste dumpsite and its environmental implications Oluku as a case study pp 22 Seminar delivered in the department of geology university of Benin. 2016
Nwachukwu, J.I. and Chukwura, P.I., (1986). Organic matter of Agbada formation, Niger Delta, Nigeria: Amer. Assoc. Petrol. Geol. Bull. Vol. 70, pp. 48-55.
Short, K.L. and stauble A.J. 1967. Outline geology of Niger Delta A.A. PG-V.5. I P. 761 -799.
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
