Integrated geoelectric and hydrochemical assessment of Ilokun dumpsite, Ado Ekiti, in southwestern Nigeria

Authors

  • Olayiwola G. Olaseeni Federal University Oye-Ekiti
  • Oluseun A. Sanuade Federal University Oye-Ekiti
  • Solomon S. Adebayo Federal University Oye-Ekiti
  • Michael I Oladapo Federal University of Technology Akure

Keywords:

Geophysical, hydrochemical, dumpsite, pollution, groundwater

Abstract

A geophysical and hydrochemical assessment of Ilokun dumpsite in Ado Ekiti, southwestern Nigeria was conducted to assess its impact on groundwater quality. Eighteen Vertical Electrical Sounding (VES) were carried out, 17 within the dumpsite and one outside the dump periphery as the control. Three dipole-dipole traverses were also established, two within the dump periphery and one as the control outside the dump periphery. Hydrochemical analysis was carried out on water samples. The geoelectric sections and inverted 2D resistivity structures delineated three subsurface geologic layers made up of topsoil, weathered layer
and fractured/fresh basement. The topsoil and weathered basement aquifer units within the dumpsite possessed low layer resistivity values of <60 Ωm and <100 Ωm, respectively. Hydrochemical analysis of water samples from the area around the dumpsite confirmed the groundwater pollution from 2.5 to >15 m deep. The pollution migration showed a predominantly southerly flow in line with the regional direction of groundwater flow. This suggests that the groundwater within the study area may constitute a major health risk for humans and require immediate attention by the authorities.

Author Biography

Oluseun A. Sanuade, Federal University Oye-Ekiti

Geophysics,

Assistant Lecturer

References

Adebayo, A.S., Ariyibi, E.A., Awoyemi, M.O. &

Onyedim, G.C. (2015). Environmental assessment of old

domestic dumpsite using 2D electrical resistivity imaging:

A case study from Olubonku dumpsite in Ede, Osun State,

southwestern Nigeria. Arabian Journal of Geosciences,

(6): 4075-4081.

Adelusi, A.O., Akinlalu, A.A. & Nwachukwu A.I.

(2013). Integrated geophysical investigation for postconstruction

studies of buildings around School of

Science area, Federal University of Technology, Akure,

Southwestern, Nigeria. International Journal of Physical

Science, 8(15): 657-669.

Andrea, T.U., Vagner, R.E., Giulliana, M., Lazaro, V.Z.,

& Heraldo, L.G. (2012). Case study: A 3D resistivity

and induced polarization imaging from downstream

in waste disposal site in Brazil. Environmental Earth

Science, 66(3): 763–772.

Akinbile, C.O. (2006). Hawked water quality and its

health implications in Akure, Nigeria. Botswana Journal

of Technology, 15: 70–75.

Ayolabi, E.A., Oluwatosin, L.B. & Ifekwuna, C.D.

(2014). Integrated geophysical and physicochemical

assessment of Olushosun sanitary landfill site, southwest

Nigeria. Arab Journal of Geoscience, 8: 4101-4115.

Bayode, S., Omosuyi, G.O., Mogaji, K.A. & Adebayo,

S.T. (2011). Geoelectric delineation of structurallycontrolled

leachate plume around Otutubiosun dumpsite,

Akure, southwestern Nigeria. Journal of Emerging

Trends in Engineering and Applied Sciences, 2(6): 987-

Chauhan, J. & Rai, J.P.N. (2010). Monitoring of impact

of ferti-irrigation by post-methanated distillery effluent

on groundwater quality. Clean–Soil, Air, Water, 38(7):

–638.

De Carlo, L., Perri, M.T., Caputo, M.C., Deiana, R.,

Vurro, M. & Cassiani, G (2013). Characterization of a

dismissed landfill via electrical resistivity tomography and mise-àla-

masse method. Journal of Applied Geophysics, 98: 1- 10.

Fajana, A.O. (2013) Integrated geophysical

characterization of subsurface conditions around Ilesha

dumpsite: Case of Southwestern Nigeria. Asian Journal

of Applied Science & Engineering, 2(2): 84-95.

Ganiyu, S.A., Badmus, B.S., Oladunjoye, M. A.,

Aizebeokhai, A. P., Ozebo, V. C., Idowu, O.A. & Olurin,

O.T. (2016). Assessment of groundwater contamination

around active dumpsite in Ibadan southwestern Nigeria

using integrated electrical resistivity and hydrochemical

methods Environmental Earth Science, 75(8): 643-661.

Igbinosa, E.O. & Okoh, A.I. (2009). Impact of discharge

wastewater effluents on the physico-chemical qualities

of a receiving watershed in a typical rural community.

International Journal of Environmental Science and

Technology, 6(2): 175-182.

Ikem, A., Osibanjo, O., Sridhar, M.K.C. & Sobande, A.

(2002). Evaluation of groundwater quality characteristics

near two waste sites in Ibadan and Lagos, Nigeria. Water,

Air, and Soil Pollution, 140(1-4): 307–333.

Jaji, M.O., Bamgbose, O., Odukoya, O.O. & Arowolo,

T.A. (2007). Water quality assessment of Ogun River, south

west Nigeria. Environmental Monitoring and Assessment,

(1-3): 473–482.

Kottek, M., Grieser, J., Beck, C., Rudolf, B. & Ru,

F. (2006). World map of the Köppen-Geiger climate

classification updated. Meteorologische Zeitschrift, 15(3):

-263, 2006.

Lateef, T.A., Eluwole, A.B. & Adewale D.J. (2015).

Geoelectrical assessment of the impact of the Ilokun

dumpsite, Ado-Ekiti Southwestern Nigeria, on surrounding

groundwater aquifers. International Letters of Natural

Sciences, 40: 41-47.

Loke, M.H. (2000). Electrical imaging surveys for

environmental and engineering studies: A practical guide to

-D and 3-D surveys. http://www.heritagegeophysics.com.

Longe, E.O. & Balogun, M.R. (2010). Groundwater

quality assessment near a municipal landfill, Lagos, Nigeria.

Research Journal of Applied Sciences, Engineering and

Technology, 2(1): 39–44.

Meme, F.K., Arimoro, F.O. & Nwadukwe, F.O. (2014).

Analyses of physical and chemical parameters in surface

waters nearby a cement factory in north central, Nigeria.

Journal of Environmental Protection, 5: 828-836.

Mohamed, A.F., Yacob, W.Z.W., Taha, M.R. & Samsudin,

A.R. (2009). Groundwater and soil vulnerability in the

Langat Basin Malaysia. European Journal of Scientific

Research, 27(4): 628–635.

Ogedengbe, K. & Akinbile, C.O. (2004). Impact of

industrial pollutants on quality of ground and surface waters

at Oluyole Industrial Estate, Ibadan, Nigeria. Nigerian

Journal of Technological Development, 4: 139–144.

Olaojo, A.A., Oladunjoye, M.A. & Sanuade, O.A.

(2016). Geochemical assessment of groundwater pollution from sewage effluents in the university campus of Ibadan,

southwestern Nigeria. Journal of Geological Society of

India, 88: 648-653.

Olayinka, A.I. & Olayiwola, M.A. (2001). Integrated use

of geoelectrical imaging and hydrochemical methods in

delineating limits of polluted surface and groundwater at a

landfill site in Ibadan rea, Southwestern Nigeria. Journal of

Mining and Geology, 37(1): 53 – 68.

Pedro, M., Ángel, F.C, Gerson, R.R. & Ana, B.O. (2010).

-D electrical resistivity imaging to assess slurry pond

subsoil pollution in the southeastern region of Murcia, Spain.

Journal of Environmental and Engineering Geophysics,

(1):29 - 47.

Shyamala, R., Shanti, M. & Lalitha, P. (2008).

Physico-chemical analysis of borewell water samples of

Telungupalayam area in Coimbatore District, Tamilnadu,

India. E-Journal of Chemistry, 5(4): 924–929.

Sudha, B., Tezkan, B., Israil –Singhal, D.C. & Rai, J.

(2010). Geoelectric mapping of aquifer contamination: a

case study from Roorkee, India. European Association of

Geologists & Engineers. Near Surface Geophysics, 8: 33-

Ugwu N.U., Ranganai R.T., Simon R.E., Ogubazghi G.

(2016). Application of geoelectrical resistivity method to the

assessment of groundwater pollution: a case study of Onibu-

Eja active open dumpsite, Osogbo, Southwestern Nigeria,

(1): 160-174.

WHO (2017). Guidelines for drinking-water quality. Fourth

edition incorporating the first addendum. Recommendations,

Geneva, World Health Organisation.

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Published

11-11-2018

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Section

Earth & Environment