Geochemical and Bacteriological Analyses of Water Resources Prone to Contamination from Solid Waste Dumpsites in Imo State, Southeastern Nigeria

Chikaodili, E. B.; Iheanyichukwu, O. A.; Kelechi, N. O.; Ikechukwu, Nnamonu Emmanuel

doi:10.3923/jest.2017.325.343

Cited by 10 publications

(2 citation statements)

References 11 publications

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“…Rural water systems are often less extensively regulated and monitored than urban networks (Trémolet 2013) and are less amenable to some of the technical remediation and corrosion control methods available to large utilities (Schock 1989). Rural water system users are thus disproportionately vulnerable to TM exposure through drinking water, with users in low-income and middle-income countries (LMICs) potentially at particular risk of undetected exposures (Chikaodili et al 2017). In sub-Saharan Africa (SSA), over 400 million people use groundwater and an estimated 184 million use handpumps-many of them in rural settings (Cobbina et al 2015;Tukura 2014).…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Lead and Other Toxic Metals Derived from Drinking-Water Systems in Three West African Countries

Fisher

Guo

Tracy

et al. 2021

Environ Health Perspect

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Section: Introductionmentioning

confidence: 99%

Occurrence of Lead and Other Toxic Metals Derived from Drinking-Water Systems in Three West African Countries

Fisher

Guo

Tracy

et al. 2021

Environ Health Perspect

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“…2a and b). Chikaodili et. al., (2017) concluded that the high concentrations of potassium, nitrate, iron, lead and high occurrence of bacteria in the water resources at solid waste dumpsites in Imo State, Southeastern Nigeria indicate possible anthropogenic contamination.…”

Section: Resultsmentioning

confidence: 99%

Understanding the Contaminant Chemistry of Water Resource at Urban Solid Waste Disposal Site, Hyderabad, India

Peddi

Reddy²,

Kumar

2021

Preprint

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The Hyderabad urban solid waste dump site though located on a rocky hillock has highly weathered mantle apart from inter-connected network of fractures. These hydrological features favored massive dissipation of contaminants into the surface as well as sub-surface water resources. The surface water bodies in the vicinity turned into leachate pools and groundwater in the zone of influence is not fit for any use. It is assumed that apart from hydrological factors hydrogeochemical characteristics also contributed to contamination of pore water. Efforts were made through the Paper to underline the preferential chemistry of water resources at solid waste disposal sites that stimulated the ion enrichment. Both surface (15) and groundwater (79) samples were gathered during 2011 and 2012 hydrological cycles and tested for major parameters. Few samples (15) of 2012 were also analyzed to determine TOC, BOD, and COD. The general order of abundance of prominent ion species in groundwater was Cl-, Ca2+, Na+, Mg2+, HCO3- and SO42-. Very high and similar Cl- concentration in surface water (37 meq/l) and contaminated groundwater (40 mq/l) establish that solid waste stockpile was the point source through leachate. The presence of high (>200 mg/l) TOC, BOD and COD in many surface and groundwater samples supports the inference. Modified Piper plots display the Ca-Mg-Cl and Ca-Mg-HCO3 were the dominant hydrochemical facies in groundwater, whereas many surface water and few groundwater samples belong to Na-Cl/SO4 type. A good correlation (~0.90) between Cl- - Ca2+, TH, Na+, and Mg2+ points out that these ion species were from the same source. Gibbs plots, positive CAI-1 and 2, together with >2 ratios of Ca2+/Mg2+, Cl-/Na+ in many samples divulge water-rock interaction and ion exchange were also controlling the hydrochemistry. The low HCO3-/Cl-, TA/TH and SO42-/HCO3- values indicate an insufficient influx of freshwater and non-lithogenic sources altered the groundwater chemistry. >0.50 ratio of Na++K+/TZ+, Ca2+/Na+, Ca2+/HCO3- together with cross plots of Na+K vs Cl-+ SO42-, HCO3-+ SO42- vs Ca2++Mg2+ and Langelier and Ludwig (modified) diagram confirm the multiple ionization processes were operating in aqueous system. Favorable hydrochemistry in the form of alkaline water, high TH, Cl- and prevailing redox conditions as well as methanogenic phase of dump yard might have spurred up ion enrichment activity within the zone of influence of point source.

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Hydro-geochemical assessment of an open dumpsite in a basement complex of Abeokuta, Ogun State, Southwestern Nigeria

et al. 2020

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Geochemical and Bacteriological Analyses of Water Resources Prone to Contamination from Solid Waste Dumpsites in Imo State, Southeastern Nigeria

Cited by 10 publications

References 11 publications

Occurrence of Lead and Other Toxic Metals Derived from Drinking-Water Systems in Three West African Countries

Occurrence of Lead and Other Toxic Metals Derived from Drinking-Water Systems in Three West African Countries

Understanding the Contaminant Chemistry of Water Resource at Urban Solid Waste Disposal Site, Hyderabad, India

Hydro-geochemical assessment of an open dumpsite in a basement complex of Abeokuta, Ogun State, Southwestern Nigeria

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