GLOBAL JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCE
Integrity Research Journals

ISSN: 2636-6002
Model: Open Access/Peer Reviewed
DOI: 10.31248/GJEES
Start Year: 2016
Email: gjees@integrityresjournals.org


Use of graphical plots to discriminate effects of urbanization on groundwater chemistry in Ado-Ekiti and Ijero-Ekiti, Southwestern Nigeria

https://doi.org/10.31248/GJEES2023.135   |   Article Number: 6E287F9D1   |   Vol.8 (3) - August 2023

Received Date: 09 June 2023   |   Accepted Date: 12 July 2023  |   Published Date: 30 August 2023

Authors:  A. O. Talabi* , O. L. Afolagboye and A. A. Oyedele

Keywords: pollution., Graphical plots, irrigation quality parameters, piper diagram

Presentation of chemical analysis in graphical forms makes understanding of complex groundwater system simpler and quicker. This study examined the signatures of graphical plots to unravel the effects of urbanization on the groundwater quality of Ado-Ekiti and Ijero-Ekiti, southwestern Nigeria. In this study, existing data from Sanitary Surveys and Hydrochemistry of Groundwater in Two Urban Towns (Ado-Ekiti and Ijero-Ekiti), Southwestern Nigeria were employed for the graphical plots. In that study, sixty wells’ water samples (30 each from Ado-Ekiti and Ijero-Ekiti respectively) were involved in the chemical analyses. Sampling operation was carried out by collecting water samples in duplicates at each location into a pre-cleansed polyethylene bottles for anions and cations determinations. The samples for cations analysis were acidified by addition of two drops of concentrated Nitric acid to prevent reactions that may come up before analysis. All samples were kept in a refrigerator at a temperature of 4°C before they were analyzed at the Federal University of Technology, Akure Nigeria. Anions were determined employing Ion chromatography while the cations were analyzed using an Atomic Absorption Spectrophotometer Buck 210 model. The graphical plots in this study were obtained from the results of the chemical concentrations of the analyses. Results of the chemical analysis showed that the wells’ water was low mineralized with chemical concentrations of all ions within approved standard for drinking water except the NO3- (mg/L) values with concentrations that range from 95.62 – 405.39 and 13.47 – 382.49 at Ijero-Ekiti and Ado-Ekiti respectively. The Nitrate pollution of water from the two cities came from anthropogenic activities mostly from indiscriminate dumping of waste and fossil fuel. However, Ijero-Ekiti had additional pollutants from the gangues arisen from the mining activities in the area. All the graphical plots (Gibb’s diagram, Schoeller diagram, Wilcox plot and Cross plot) except the Piper diagram indicate that the groundwater at Ijero-Ekiti is more polluted than that of Ado-Ekiti. The Piper diagram for both cities reveals almost equal groundwater rate of pollution with 80% of the groundwater having NaSO4Cl water type. All estimated irrigation quality parameters (sodium absorption ratio (SAR), soluble sodium product (SSP), Residual sodium Bicarbonate (RSBC), Kelly Ratio (KR), Permeability Index (PI) and Magnesium Absorption Ratio (MAR)) indicate that groundwater at Ijero-Ekiti is more prone to pollution and of better irrigation quality than that of Ado-Ekiti. Despite the high population at Ado-Ekiti, the groundwater is less prone to pollution due to intensive sanitation and hygiene activities. In this study, as against the general accepted view, urbanization has no significant impact on groundwater pollution as hygiene/sanitation is its foremost determinant.

Abdelaziz, R., Pearson, A. J., & Merkel, B. J. (2013). Lattice Boltzmann modeling for tracer test analysis in a fractured gneiss aquifer. Natural Science, 5(3), 368-374.
Crossref
 
Adebayo, W., & Arohunsoro, J. S. (2014). Environmental Effects of Urbanization of River Ajilosun Drainage Basin in Ado-Ekiti, Ekiti State, Nigeria. Journal of Natural Science Research, 4(2), 113-124.
 
Adelana, S. M. A., Abiye., T. A., Nkhuwa., D. C. W., Tindinugaya., C., & Oga. M. S. (2008). Urban groundwater management and protection in Sub-Saharan Africa. In: Adelana, S. M. A., & MacDonald, A. M. (eds.). Applied groundwater studies in Africa. International Association of Hydrogeologists, selected papers. Pp. 222-259.
 
Adeyemi, G. O., Adesile, A. O., & Obayomi, O. B. (2003). Chemical characteristics of some well waters in Ikire, Southwestern Nigeria. Water Resources (Journal of the Nigerian Association of Hydrogeologists), 14, 12-18.
 
Agbemuko, O., S., Abam, T. K., Tamunobereton-Ari, I., & Amakiri, A. R. C. (2021). Hydrogeological and geophysical investigation of ground water potentials in basement terrain of Ado Ekiti, Southwestern Nigeria. IOSR Journal of Applied Geology and Geophysics, 9(4 Ser. II), 11-25.
 
Akinola, O. O., Okunlola, O. A., & Obasi, R. A. (2014). Physico-chemical characteristics and industrial potentials of Lepidolite from Ijero-Aramoko pegmatite field, South Western Nigeria. International Journal of Scientific & Technology Research, 3(3), 278-283.
 
Ale, P. T., Dada, J. A., & Adewumi, A. J. (2014). Industrial minerals potentials of Ijero pegmatite in Ekiti state, Southwestern Nigeria. World Applied Sciences Journal, 29(3), 415-420.
 
Aliu, O. O., Ologe, O., & Ogungbemi, S. O. (2015). Hydrogeo-physical investigation of Kusa mining hill, Ijero-Ekiti, Nigeria, using geo-electrical and electromagnetic methods. Al-Hikmah Journal of Pure & Applied Sciences, 1, 18-26.
 
Al-Khatib, M., & Al-Najar, H. (2011). Hydro-geochemical characteristics of groundwater beneath the Gaza Strip. Journal of Water Resource and Protection, 3(5), 341-348.
Crossref
 
Amadi, A. N., & Olasehinde, P. I. (2010). Application of remote sensing techniques in hydrogeological mapping of parts of Bosso Area, Minna, North-Central Nigeria. International Journal of the Physical Sciences, 5(9), 1465-1474.
 
Appelo, C. A. J., & Postma, D. (2004). Geochemistry, groundwater and pollution, 2nd edition. Balkema, Rotterdam, The Netherlands. p. 647.
Crossref
 
Arohunsoro, S. J., & Omotoba, N. I. (2017). Causes, Effect and Abatement Measures of Flooding in River Ajilosun Drainage Basin in Ado-Ekiti, Nigeria. Donnish Journals of Ecology and the Natural Environment, 4(1), 1-10
 
Ayodele, O. S. (2012). Stream sediment geochemical survey of Ijero and Ikoro area, Southwestern Nigeria. Journal of Applied Sciences Research, 8(1), 215-223.
 
Bankole, B. O. (2010). The geographical distribution of water supply in Ekiti State. African Research Review, 4(2), 71-79.
Crossref
 
Çelebi, A., & Özdemir, S. (2014). Mining wastewater management and its effects on groundwater and ecosystems. Water science and technology, 70(9), 1481-1487.
Crossref
 
Chunyang, H., Zhifeng, L., Jianguo, W., Xinhao, P., Zihang, F., Jingwei, Li., & Brett, A. B. (2021). Future global urban water scarcity and potential solutions. Nature Communications, 12, Article number 4667.
Crossref
 
Doneen, L. D. (1962, June). The influence of crop and soil on percolating water. In Proc. 1961 Biennial conference on Groundwater recharge (pp. 156-163).
 
Freeze, R. A., & Cherry, J. A. (1979). Ground water contamination. In: Groundwater. Prentice-Hall, Englewood Cliffs, NJ USA, 383-456.
 
Gupta, S. K., & Gupta, I. C. (1987). Management of saline soils and waters. Oxford & IBH Publishing Co. New Delhi, India. p. 399.
 
Kelley, W. P. (1963). Use of saline irrigation water. Soil Science, 95(6), 385-391.
Crossref
 
Kurwadkar, S., Kanel, S. R., & Nakarmi, A. (2020). Groundwater pollution: Occurrence, detection, and remediation of organic and inorganic pollutants. Water Environment Research, 92(10), 1659-1668.
Crossref
 
Li, C., Liu, M., Hu, Y., Shi, T., Zong, M., & Walter, M. T. (2018). Assessing the impact of urbanization on direct runoff using improved composite CN method in a large urban area. International journal of environmental research and public health, 15(4), Article number 775.
Crossref
 
Li, S., Lu, X. X., & Bush, R. T. (2014). Chemical weathering and CO2 consumption in the Lower Mekong River. Science of the Total Environment, 472, 162-177.
Crossref
 
Madhav, S., Ahamad, A., Kumar, A., Kushawaha, J., Singh, P., & Mishra, P. K. (2018). Geochemical assessment of groundwater quality for its suitability for drinking and irrigation purpose in rural areas of Sant Ravidas Nagar (Bhadohi), Uttar Pradesh. Geology, Ecology, and Landscapes, 2(2), 127-136.
Crossref
 
Miao, Z., Carroll, K. C., & Brusseau, M. L. (2013). Characterization and quantification of groundwater sulfate sources at a mining site in an arid climate: The Monument Valley site in Arizona, USA. Journal of Hydrology, 504, 207-215.
Crossref
 
Obasi, R. A., & Madukwe, H. (2016). Geochemistry, Classification Characteristics of Pegmatites from Ijero-Ekiti, Ekiti-State, Southwest Nigeria. International research journal of Natural sciences, 4(4), 1-18.
 
Ocheri, M. I., Odoma, L. A., & Umar, N. D. (2014). Groundwater quality in Nigerian urban areas: a review. Global Journal of Science Frontier Research, 14(3), 35-46.
 
Oguntimehin, I. I., & Babatola, J. O. (2007). The pollution status of some selected rivers in Ado-Ekiti, Nigeria. Pakistan Journal of Scientific and Industrial Research, 50(1), 22-26.
 
Ojo, J. S., Olorunfemi, M. O., Akintorinwa, O. J., Bayode, S., Omosuyi, G. O., & Akinluyi, F. O. (2015). GIS integrated geomorphological, geological and geoelectrical assessment of the groundwater potential of Akure Metropolis, southwest Nigeria. Journal of Earth Sciences and Geotechnical Engineering, 5(14), 85-101.
 
Olajuyigbe, A. E. (2010). Sustainable water service delivery: an assessment of a water agency in a rapidly urbanizing city in Nigeria. Journal of Sustainable Development, 3(4), 210-219.
Crossref
 
Oyedele, A. A. (2019). Use of remote sensing and GIS techniques for groundwater exploration in the basement complex terrain of Ado-Ekiti, SW Nigeria. Applied Water Science, 9(3), 1-13.
Crossref
 
Press, F., & Siever, R., 1985. Earth. New York: Freeman and Co.
 
Raghunath, I. I. M. (1987). Groundwater. Second edition; Wiley Eastern Ltd, New Delhi, India.
 
Richards, L. A., (1954). Diagnosis and improvement of saline and alkali soils. Agricultural Handbook 60, USDA and IBH Publishing Co. Ltd. New Delhi, India. Pp. 98-99.
Crossref
 
Sadashivaiah, C. R. R. C., Ramakrishnaiah, C. R., & Ranganna, G. (2008). Hydrochemical analysis and evaluation of groundwater quality in Tumkur Taluk, Karnataka State, India. International journal of Environmental Research and Public Health, 5(3), 158-164.
Crossref
 
Sharma, M. K., & Kumar, M. (2020). Sulphate contamination in groundwater and its remediation: an overview. Environmental Monitoring and Assessment, 192, Article number 74.
Crossref
 
Talabi, A. O. (2018). Estimated volume of water in shallow wells of Ekiti State, Southwestern Nigeria: implications on groundwater sustainability. Arabian Journal of Geosciences, 11(21), Article number 681.
Crossref
 
Talabi, A. O., Abdu-Raheem, Y. A., Afolagboye, L. O., Oguntuase, M. A., & Akinola, O. O. (2020). Hydrogeochemistry of shallow groundwater in Ado-Ekiti Area, Southwestern Nigeria. Groundwater for sustainable development, 11, 100386.
Crossref
 
Talabi, A. O., Afolagboye, L. O., Ajayi, C. A., & Kolawole, O. (2022). Sanitary Surveys and Hydrochemistry of Groundwater in Two Urban Towns (Ado-Ekiti and Ijero-Ekiti), Southwestern Nigeria. Journal of Geoscience and Environment Protection, 10(7), 159-185.
Crossref
 
Tijani, M. N. (1994). Hydrogeochemical assessment of groundwater in Moro area, Kwara State, Nigeria. Environmental geology, 24, 194-202.
Crossref
 
Todd, K. D. (1980). Ground water hydrology. 2nd ed. New York: John Wiley and Sons.
 
Wilcox, L. V. (1955). Classification and use of irrigation waters (No. 969). US Department of Agriculture. 19p.
 
Zhou, Z. Z., Huang, T. L., Ma, W. X., Li, Y., & Zeng, K. (2015). Impacts of water quality variation and rainfall runoff on Jinpen Reservoir, in Northwest China. Water Science and Engineering, 8(4), 301-308.
Crossref