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Research Article Open access CC BY 4.0

The Geophysical Investigation of Leachate Formation in Mgbuka Obosi, Idemili North Local Government Area of Anambra State, Nigeria

Obiabunmo O. C, Obiekezie T. N

Asian Journal of Geographical Research · pp. 44–57 · Published 8 Dec 2023

10.9734/ajgr/2023/v6i4203

Abstract

The contamination of leachates (a polluted liquid made up of various toxic substances) from landfills is a significant environmental concern, especially in developing countries.This contaminated fluid is formed when rainwater interacts with refuse and travels through the pore spaces in soil. Constant migration of this fluid poses a significant threat to the quality of both surface and groundwater in and close to the landfill area. To determine the extent of leachate formation, the study used both Very Low-Frequency Electromagnetic (VLF-EM) and Electric Resistivity Tomography (ERT) to locate and define the spatial distribution of the leachate plume migration pathway at Mkpuka Obosi Dumpsite in Idemili North LGA of Anambra, Nigeria. Seven profiles were surveyed for both the VLF-EM and ERT. The VLF-EM survey, with a profile length of 100 to 200m and a 10m interstation spacing, revealed the presence of a conductive pollutant (leachate plume) in the subsurface. The results from the 2D ERT survey that employed a Wenner array with a profile length of 100 to 200m and an electrode spacing of 5m, divided the subsurface into six zones with an unusually low resistivity ranging from 0-250\(\Omega\)m. The leachate plumes were interpreted as the zone with the lowest resistivity of 0 to 25\(\Omega\)m, having an average thickness of approximately 10m and extending beyond the probed depth of 50m. Additionally, the percentage of leachate was found to be concentrated primarily at the center of the landfill and gradually decreasing proportionally from the center. Thus, emphasizing the importance of addressing the issues in landfill management.

Leachate landfill dumpsite VLF-EM ERT dispersive clay

References (41)

  1. 1 Ameloko AA, Ayolabi EA, Geophysical assessment for vertical leachate migration profile and physicochemical study of groundwater around the Olusosun dumpsite Lagos, south-west Nigeria, Appl. Water Sci. 2018;8(5):142 DOI: 10.1007/s13201-018-0775-x [DOI]
  2. 2 Ikotun OO, Awokola OS, Investigation of Physico-Chemical characteristics of shallow aquifer around dumpsites: A case study Of Kajola, Agbowo Dumpsites, At Ibadan, Oyo State, South Western Nigeria., Int. J. Eng. Res. 2012;1(6).
  3. 3 ul I, Lone H, Kumar A, Khan F, Saxena S, Evaluating the effect of landfill leachate on groun dwater quality in relation to physicochemical and bacteriological characteristics; 2012. Accessed: Mar. 26, 2023. Available:https://www.semanticscholar.org/paper/Evaluating-the-effect-of-landfill-leachate-on-groun-Lone-Kumar/dbd91ba444443aa6a1348828048a80bbbae5f261
  4. 4 Barrett A, lawlor J, The economics of solid waste management in Ireland, Econ. Soc. Res. Inst. ESRI Res. Ser; 1995.
  5. 5 Ikhifa I, Obiekezie T, Iyoha A, Geophysical contribution of using 3D View in Landfill Site. 2019; 2581–7396
  6. 6 Nduka JK, Ifeanyi FC, Modozie BU, Risk assessment of heavy metals contamination in surface and underground water around dumpsite in Amaenyi, Awkasouth., ANSP/POLY. 2013;001:54-65.
  7. 7 Aderemi AO, Oriaku AV, Adewumi GA, Otitoloju AA, Assessment of groundwater contamination by leachate near a municipal solid waste landfill, Afr. J. Environ. Sci. Technol. 2011;5(11):933–940 DOI: 10.5897/AJEST11.272.
  8. 8 Chibuogwu IU, Ugwu GZ, Egwuonwu GN, Conducting a comprehensive physical investigation on uncontrolled internal soil erosion leading to sinkholes in anambra state, nigeria, Asian J. Geogr. Res. 2023;6(3):104–122. [DOI]
  9. 9 DOI: 10.9734/ajgr/2023/v6i3196 [DOI]
  10. 10 Porsani JL, Filho WM, VR. Elis F. Shimeles, J. C. Dourado, and H. P. Moura, “The use of GPR and VES in delineating a contamination plume in a landfill site: a case study in SE Brazil,” J. Appl. Geophys. 2004;55(3):199–209 [DOI]
  11. 11 DOI: 10.1016/j.jappgeo.2003.11.001 [DOI]
  12. 12 Chibuogwu IU, Ugwu GZ. Recruiting the very low frequency electromagnetic geophysical Technique for the Characterisation of Two Eroded Soil Pipes in Awka, Anambra State, Nigeria,” Asian J. Geol. Res. 2023;6(2):84–92
  13. 13 Chibuogwu IU, Ugwu GZ, Investigation into the chemical characteristics of soils near sinkholes situated in anambra state, Nigeria, Saudi J. Civ. Eng. 2023;7(9):211–22 DOI: 10.36348/sjce.2023.v07i09.001 [DOI]
  14. 14 Obiekezie TN, Hydrocarbon exploration in Odo field in the niger delta basin Nigeria, using a three-dimensional seismic reflection survey, Sci. Res. Essays. 2014;9(17): 778–784 DOI: 10.5897/SRE2013.5528 [DOI]
  15. 15 Obiekezie TN, Bassey E, Petrophysical analysis and volumetric estimation of otu field, Niger Delta Nigeria, Using 3D Seismic and Well Log Data, Phys. Sci. Int. J. 2015;6:54-65. DOI: 10.9734/PSIJ/2015/15320 [DOI]
  16. 16 Ikhifa I, Umego MN, Obiekezie TN, Egwuonwu GN, Geophysical evaluation of a Landfill Site in Ikpoba Okhia Local Government Area, Edo State, Nigeria, Phys. Sci. Int. J. 2017;1-6. DOI: 10.9734/PSIJ/2017/34850 [DOI]
  17. 17 Umeh M, Obiekezie T, Anakwuba E, Nwosu J, Estimation of depth to basement using spectral analysis of gravity data in parts of South Eastern Nigeria; 2022.
  18. 18 Obiabunmo OC, Umego MN, Obiekezie TN, Chinwuko AI, Application of electrical resistivity method for groundwater exploration in oba and environs, Anambra State, Nigeria, Adv. Phys. Theor. Appl. 2014;37(0):19.
  19. 19 Ayad A, Bakkali S, Analysis of the Magnetic Anomalies of Buried Archaeological Ovens of Aïn Kerouach (Morocco),” Int. J. Geophys. vol. 2018;e9741950. DOI: 10.1155/2018/9741950 [DOI]
  20. 20 AJC, The impact of deforestation on soil conditions in Anambra State of Nigeria, Agric. For. Fish. 2015;4(3):64. [DOI]
  21. 21 DOI: 10.11648/j.aff.s.2015040301.21 [DOI]
  22. 22 Udegbunam Ayadiuno R, Analysis of soil erosion causative factors and susceptibility in Anambra State, Southeastern, Nigeria, Biosci. Biotechnol. Res. Commun. 2021;14(9):212–218 DOI: 10.21786/bbrc/14.9.40. [DOI]
  23. 23 Palacky GJ, The airborne electromagnetic method as a tool of geological mapping*,” Geophys. Prospect. 1981;29(1):60–88 DOI: 10.1111/j.1365-2478.1981.tb01011.x [DOI]
  24. 24 Kaikkonen P, Sharma SP, 2-D nonlinear joint inversion of VLF and VLF-R data using simulated annealing,” J. Appl. Geophys.1998;39(3):155–176. DOI: 10.1016/S0926-9851(98)00025-1 [DOI]
  25. 25 Karous M, Hjelt SE, Linear filtering of vlf dip-angle measurements*, Geophys. Prospect.1983;31(5):782–794 [DOI]
  26. 26 DOI: 10.1111/j.1365-2478.1983.tb01085.x [DOI]
  27. 27 Fraser DC., Contouring of VLF-EM Data, Geophysics. 1969;54:245–253,.
  28. 28 Ogilvy D, Lee AC, Interpretation Of Vlf-Em In-Phase Data Using Current Density Pseudosections1, Geophys. Prospect. 1991;(39(4):567–580. DOI: 10.1111/j.1365-2478.1991.tb00328.x [DOI]
  29. 29 Loke MH, Barker RD, Rapid least-squares inversion of apparent resistivity pseudosections by a quasi-Newton method1. Geophys. Prospect. 1996;44(1): 131-152. DOI: 10.1111/j.1365-2478.1996.tb00142.x [DOI]
  30. 30 Loke MH, Chambers JE, Rucker DF, Kuras O, Wilkinson PB, Recent developments in the direct-current geoelectrical imaging method, J. Appl. Geophys. 2013;95:135–156, Aug. 2013, DOI: 10.1016/j.jappgeo.2013.02.017. [DOI]
  31. 31 Ariyo SO, Adeyemi GO, Oyebamiji AO, Electromagnetic Vlf Survey for Groundwater Development in a Contact Terrain; a Case Study of Ishara-remo, Southwestern Nigeria., J. Appl. Sci. Res. 2009;8(9):1239–1246,
  32. 32 Olafisoye ER, Sunmonu LA, Adagunodo TA, Oladejo OP, Impact assessment of solid waste on groundwater: A case study of aarada dumpsite, Nigeria. 2013;2(2).
  33. 33 Chibuogwu IU, Ugwu GZ,“Uncovering soil piping vulnerability using direct current geophysical techniques in Awka, Anambra State, Nigeria, Int. J. Multidiscip. Res. Growth Eval. 2023;4(3):426–450, , DOI: 10.54660/.IJMRGE.2023.4.3.426-450 [DOI]
  34. 34 Abdullahi NK Osazuwa IB, Geophysical imaging of municipal solid waste contaminant pathways, Environ. Earth Sci. 2011;62(6):1173–1181 DOI: 10.1007/s12665-010-0606-3 [DOI]
  35. 35 Ikhifa I, Umego M, Mapping groundwater contamination around a dumpsite in Benin City, Nigeria Using VLF-EM Method, J. Geogr. Environ. Earth Sci. Int. 9,2016;4(1):1-9. DOI: 10.9734/JGEESI/2016/19899 [DOI]
  36. 36 Onwuegbuchulam DO, Ikoro DO, Nwugha VN, Okereke CN, Application of very low Frequency-Electromagnetic (VLF-EM) Method to Map Fractures/ Conductive Zones in Auchi South western Nigeria. Int. J. Eng. Sci. IJES .2013;5(5):7-13.
  37. 37 Abdullahi N, Osazuwa I, SPO, Application of Integrated Geophysical Techniques In The Investigation Of Groundwater Contamination: A Case Study Of Municipal Solid Waste Leachate. 2011;4:7-25.
  38. 38 Ramalho EC, Dill AC, Rocha R, Assessment of the leachate movement in a sealed landfill using geophysical methods. Environ. Earth Sci. 2013;68(2): 343–35 DOI: 10.1007/s12665-012-1742-8. [DOI]
  39. 39 Basga SD, Tsozue D, Temga JP, Balna J, Nguetnkam JP, Land use impact on clay dispersion/flocculation in irrigated and flooded vertisols from Northern Cameroon, Int. Soil Water Conserv. Res. 2018;6(3):237–24 DOI: 10.1016/j.iswcr.2018.03.004 [DOI]
  40. 40 Ayolabi EA, Folorunso AF OT. Kayode, Integrated geophysical and geochemical methods for environmental assessment of municipal dumpsite system, Int. J. Geosci. 2013;4(5). DOI: 10.4236/ijg.2013.45079 [DOI]
  41. 41 Raji WO, Adeoye TO, Geophysical mapping of contaminant leachate around a reclaimed open dumpsite, J. King Saud Univ.-Sci. 2017;29(3):348–359. [DOI]

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