A study of natural uranium content in groundwater around Tummalapalle uranium mining and processing facility, India

Rana, B. K.; Dhumale, M.R.; Lenka, P.; Sahoo, Sunil Kumar; Ravi, P.M.; Tripathi, R. M.

doi:10.1007/s10967-015-4350-8

Cited by 20 publications

(5 citation statements)

References 19 publications

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“…This study area has high U levels in the groundwater, with 88% of samples being over the WHO (2011) limit of 30 ug/L (Table 1 & Figures 11 & 12). "High" U levels in groundwater are reported from other parts of the world, but are usually at lower levels than in this study, such as from Germany (Banning et al, 2013) and India (Duggal et al, 2017), including some studies on areas adjacent to U mining and processing, as in India (Rana et al, 2016), although other mining areas predictably reported much higher U values, such as from Namibia (Abiye & Shaduka, 2017) or Johannesburg, South Africa (Winde & Van der Walt, 2004). The high U levels found in this study are not clearly related to any of the bedrock geology.…”

Section: Discussioncontrasting

confidence: 43%

Hydrochemical evolution of high uranium, fluoride and nitrate groundwaters of Namakwaland, South Africa

Makubalo

Diamond

2020

Journal of African Earth Sciences

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Section: Discussioncontrasting

confidence: 43%

Hydrochemical evolution of high uranium, fluoride and nitrate groundwaters of Namakwaland, South Africa

Makubalo

Diamond

2020

Journal of African Earth Sciences

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“…Sahoo et al 5 has been reported U concentration in the range of 0.1-19.6 ppb in the drinking water samples collected from Orissa, Andhra Pradesh, Maharashtra, Madhya Pradesh, Kerala, etc. Rana et al 6 has been reported U concentration in the range of 0.38-79.7 ppb in the ground water samples collected nearby the Tummalapalle uranium mining and processing facility. Atomic Energy Regulatory Board (AERB) 7 recommended 60 ppb as the maximum permissible limit of uranium in drinking water.…”

Section: Resultsmentioning

confidence: 99%

Distribution of Uranium in Drinking water and Associated Age-Dependent Radiation Dose in Porakad, Allapuzha District

Monica¹,

BIJINI²,

Jojo³

2017

jusps-B

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Exposure due to natural radiation is of particular importance because it accounts for the largest contribution (nearly 85 %) to the total collective dose of the world population. Uranium is a heavy metal that is not only radiologically harmful but also a well-known nephrotoxic element. In the present study, about 30 water samples were collected from open-wells ,Bore well and supplied water from taps, from the coastal region of Porakad, Allapuzha District. The Uranium concentration in the water samples was analyzed by light-emitting diode (LED)-based Ultraviolet (UV) fluorimeter (Quantalase Enterprises Pvt. Ltd, Indore, Madhya Pradesh, India). The associated age dependent Uranium intake was estimated by taking the prescribed water intake values. Most of the water samples had the Uranium concentration below the standards set by United States Environmental Protection Agency (30 ppb).

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“…113−119 Such spatial distribution of U could likely result from U deposits in unconformities identified in proximity to the contaminated zones of these regions. 120 Most of the studied aquifers within the southern states were reported to be hard-rock aquifers in the proximity of granitic r o c k s 3 0 , 1 1 1 , 1 1 4 , 1 2 0 − 1 2 8 a n d / o r U m i n e r a l i z a t i o n zones, 112,114,129,130 which likely impact the U contamination in these aquifers. However, in northwestern regions where U contamination is more prevalent, the literature is divided on the influence of basement granites.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Most of the studied aquifers within the southern states were reported to be hard-rock aquifers in the proximity of granitic rocks ,,,− and/or U mineralization zones, ,,, which likely impact the U contamination in these aquifers. However, in northwestern regions where U contamination is more prevalent, the literature is divided on the influence of basement granites.…”

Section: Resultsmentioning

confidence: 99%

Investigation of Potential Drivers of Elevated Uranium Prevalence in Indian Groundwaters with a Unified Speciation Model

Sujathan

Singh

2023

Environ. Sci. Technol.

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Elevated uranium (U) (>WHO limit of 30 μg L −1 ) in Indian groundwaters is primarily considered geogenic, but the specific mineralogical sources and mechanisms for U mobilization are poorly understood. In this contribution, statistical and geochemical analyses of well-constrained metadata of Indian groundwater quality (n = 342 of 8543) were performed to identify key parameters and processes that influence U concentrations. For geochemical predictions, a unified speciation model was developed from a carefully compiled and updated thermodynamic database of inorganic, organic (Stockholm Humic model), and surface complexation reactions and associated constants. Critical U contamination was found at shallow depths (<100 m) within the Indo-Gangetic plain, as determined by bivariate nonparametric Kendall's Tau b and probability-based association tests. Analysis of aquifer redox states, multivariate hierarchical clusters, and principal components indicated that U contamination was predominant not just in oxic but mixed (oxic−anoxic) aquifers under high Fe, Mn, and SO 4 concentrations, presumably due to U release from dissolution of Fe/Mn oxides or Fe sulfides and silicate weathering. Most groundwaters were undersaturated with respect to relevant U-bearing solids despite being supersaturated with respect to atmospheric CO 2 (average pCO 2 of reported dissolved inorganic carbonate (DIC) data = 10 −1.57 atm). Yet, dissolved U did not appear to be mass limited, as predicted solubilities from reported sediment concentrations of U were ∼3 orders of magnitude higher. Integration of surface complexation models of U on typical aquifer adsorbents, ferrihydrite, goethite, and manganese dioxide, was necessary to explain dissolved U concentrations. Uranium contamination probabilities with increasing dissolved Ca and Mn exhibited minima at equilibrium solubilities of calcite [∼50 mg L −1 ] and rhodochrosite [∼0.14 mg L −1 ], respectively, at an average groundwater pH of ∼7.5. A potential indirect control of such U-free carbonate solids on U mobilization was suggested. For locations (n = 37) where dissolved organic carbon was also reported, organic complexes of U contributed negligibly to dominant U speciation at the groundwater pH. Overall, the unified model suggested competitive dissolution−precipitation and adsorption−desorption controls on U speciation. The model provides a quantitative framework that can be extended to understand dominant mobilization mechanisms of geogenic U in aquifers worldwide after suitable modifications to the relevant aquifer parameters.

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A study of natural uranium content in groundwater around Tummalapalle uranium mining and processing facility, India

Cited by 20 publications

References 19 publications

Hydrochemical evolution of high uranium, fluoride and nitrate groundwaters of Namakwaland, South Africa

Hydrochemical evolution of high uranium, fluoride and nitrate groundwaters of Namakwaland, South Africa

Distribution of Uranium in Drinking water and Associated Age-Dependent Radiation Dose in Porakad, Allapuzha District

Investigation of Potential Drivers of Elevated Uranium Prevalence in Indian Groundwaters with a Unified Speciation Model

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