Geospatial and multivariate analysis of trace metals in tubewell water using for drinking purpose in the upper Gangetic basin, India: Heavy metal pollution index

In rural areas without centralized water supply systems, inhabitants often use groundwater of unknown quality as drinking water, without understanding the possible negative consequences on their health. Karstic spring waters from Dobrogea region in Romania were assessed for their potential to be used as drinking water source, according to their quality and seasonal variation. The physico-chemical parameters of waters were compared with the guideline values for drinking water established by the World Health Organization and the Directive 98/83/EC. The nitrate and Cr concentrations exceeded the guideline value in the springs from Southern Dobrogea, but met the quality criteria in those from Northern Dobrogea, thus, to be used as drinking water, the karstic springs located in Southern Dobrogea require treatment for nitrates removal. Heavy metals pollution indices showed low to medium cumulative heavy metal pollution in all springs, while the human health risk assessment by oral exposure indicated possible noncarcinogenic risks of nitrates, both for adults and children in springs from South Dobrogea. A rigorous monitoring of the water quality before human consumption is recommended for all four studied water sources.

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“…S i -standard value or guideline values and I i -ideal values according to WHO and Kumar et al[40,42].…”

mentioning

confidence: 99%

Quality and Health Risk Assessment Associated with Water Consumption—A Case Study on Karstic Springs

Moldovan

Hoaghia

Kovács

et al. 2020

Water

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“…Moreover, Table 2 also represents the comparison between some existing literature data (Zakir et al, 2020;Saha et al, 2019;Rahman et al, 2013;Bodrud-doza et al, 2020;Kumar et al, 2019;Maw et al, 2020;Abeer et al, 2020;Muhammad et al, 2011;Mohammadi et al, 2019;Qiao et al, 2020;Dong et al, 2020;Nguyen et al, 2020;Le bot et al, 2016;Momot et al, 2005;Szuster-Janiaczyk et al, 2018;Abdeldayem, 2019;Opoku et al, 2020;Egbueri et al, 2020) and the determined heavy metal(oid)s concentrations in the tap water samples of the present study. In comparison to literature data, the mean concentration of Fe, Cr, Pb, Co, Ni, Cd were obtained significantly higher than the tabulated literature data, contrariwise, As concentration in the present study were much lower than the literature data.…”

Section: Metal(oid)s In Tap Water and Their Distributionsmentioning

confidence: 81%

Public health vulnerability due to the exposure of dissolved metal(oid)s in tap water from a mega city (Dhaka, Bangladesh)

Hossain

Anik

Khan

et al. 2021

Preprint

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Tap water is the sole source of water in urban cities but gradually being polluted by potentially toxic elements due to unplanned urbanization. The south Asian megacity, Dhaka (capital of Bangladesh) encounters drastic water pollution resulting mainly from anthropogenic differential factors. Consumption of such polluted water distributed to residents by pipelines can trigger health risks. Therefore, this study investigated the public health vulnerability associated with dissolved metal(oid)s in tap water collected across Dhaka city. The concentrations of Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Cd, Hg and Pb in measured tap water ranged from 8-156, 7–73, 400-20100, 12–110, 7-101, 12–136, 12–908, 0.03–9.75, 1–5, 0.22–1.30, and 8-118 µg/L, respectively. Among the observed elements, Pb, Cr, and Fe concentrations in 18%, 26%, and 75% of sampling sites, respectively, exceeded the standard guideline criteria of Bangladesh. Entropy-based water quality index demonstrated that ~ 12% of sampling sites possessed water unsuitable for drinking and other household works. The dominant sources of water pollution in this region are industrial effluents and domestic sewage. Both non-carcinogenic and carcinogenic health risks are invoked mostly from ingestion of Co and Pb. Regular consumption of this tap water without further pretreatment may result in detrimental health consequences to both children and adults due to the physiological accumulation of toxic elements over time. This study highlighted a comprehensive scenario of the potentially toxic elements in the tap water of Dhaka city, which will allow policymakers to take adequate measures for sustainable water quality management.

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“…Further research and development can generate more real-world investigations of pilot-scale ‘ intelligent ’ magnetic nanoadsorbents-based adsorption system for their system design and optimization on a case-to-case basis. A case-to-case basis approach seems much plausible because the research and development investigations will need to consider the existing water purification and wastewater treatment processes, and then factor in the significant variabilities that can occur in physicochemical and biological characteristics of contaminated waters (e.g., groundwaters (Subba Rao et al 2017 ; Yetiş et al 2019 ; Ferrer et al 2020 ; Gnanachandrasamy et al 2020 ) and drinking water (Navab-Daneshmand et al 2018 ; Kumar et al 2019 ; Jehan et al 2019 )) and wastewaters (e.g., landfill leachates (Augusto et al 2019 ) and complex textile wastewaters containing dyes (Bhatia et al 2017 ; Huang et al 2020 )) being treated. The findings can then be used to formulate appropriate engineering project opportunities that enable the use magnetic nanoadsorbents and integration of magnetic separation in existing water purification and wastewater treatment units.…”

Section: Developments With Magnetic Nanoadsorbents and Magnetic Separationmentioning

confidence: 99%

Magnetic nanoadsorbents for micropollutant removal in real water treatment: a review

Mudhoo

Sillanpää

2021

Environ Chem Lett

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Pure water will become a golden resource in the context of the rising pollution, climate change and the recycling economy, calling for advanced purification methods such as the use of nanostructured adsorbents. However, coming up with an ideal nanoadsorbent for micropollutant removal is a real challenge because nanoadsorbents, which demonstrate very good performances at laboratory scale, do not necessarily have suitable properties in in full-scale water purification and wastewater treatment systems. Here, magnetic nanoadsorbents appear promising because they can be easily separated from the slurry phase into a denser sludge phase by applying a magnetic field. Yet, there are only few examples of large-scale use of magnetic adsorbents for water purification and wastewater treatment. Here, we review magnetic nanoadsorbents for the removal of micropollutants, and we explain the integration of magnetic separation in the existing treatment plants. We found that the use of magnetic nanoadsorbents is an effective option in water treatment, but lacks maturity in full-scale water treatment facilities. The concentrations of magnetic nanoadsorbents in final effluents can be controlled by using magnetic separation, thus minimizing the ecotoxicicological impact. Academia and the water industry should better collaborate to integrate magnetic separation in full-scale water purification and wastewater treatment plants.

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Geospatial and multivariate analysis of trace metals in tubewell water using for drinking purpose in the upper Gangetic basin, India: Heavy metal pollution index

Cited by 61 publications

References 53 publications

Quality and Health Risk Assessment Associated with Water Consumption—A Case Study on Karstic Springs

Quality and Health Risk Assessment Associated with Water Consumption—A Case Study on Karstic Springs

Public health vulnerability due to the exposure of dissolved metal(oid)s in tap water from a mega city (Dhaka, Bangladesh)

Magnetic nanoadsorbents for micropollutant removal in real water treatment: a review

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