Browsing by Author "Kerketta, Anjali"

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    A decadal analysis to unravel the global status of emerging contaminants in wastewaters and comparison with the Indian context
    (Elsevier B.V., 2022-07-07T00:00:00) Kerketta, Anjali; Sahoo, Prafulla Kumar
    The prevalence of emerging contaminants (ECs) in wastewaters is troublesome because of their widespread and persistent nature, posing a threat to living organisms when exposed for prolonged durations. We conducted an extensive literature assessment for this study to present the overall global status of the occurrence of ECs regardless of their class by compiling relevant publications from the previous decade. The most commonly investigated category were pharmaceuticals (particularly antibiotics and anti-inflammatories/analgesics), personal care products (PCPs), and industrial chemicals (IDC). The most concentrated compounds in the global influents and effluents were Acetaminophen (500 ?g/L), an analgesic, and Saccharine (379 ?g/L), an artificial sweetener, reported from Canada and India, respectively. Irrespective of its prevalence, the presence of artificial sweeteners (ASWs), surfactants, etc., in wastewaters have often been overlooked. Most of the sub-classes exhibited minor to moderate elimination efficiency, with anti-diabetic drugs showing the highest among all. However, insignificant changes (artificial sweeteners, phthalates, etc.) and negative removal (anti-depressants, anti-psychotics, etc.) were also observed. Furthermore, Caffeine, Ampicillin, and Trimethoprim were reported at extremely high concentrations in India than in the rest of the world. Irgasan, Benzothiazoles, Sparfloxacin, etc., were also quite predominant in India, which has yet to be recorded in any other country. Therefore, the universally implemented conventional approaches are incapable of total elimination for all ECs. Hence, the traditional methods should be paired with the advanced techniques that have shown positive removal for certain ECs, which can be a promising solution to this problem. These findings will aid in establishing which classes and compounds demand immediate attention for further investigation and monitoring, allowing water managers to take necessary measures to reduce pollutant levels at the source and develop water protection policies. � 2022 Elsevier B.V.
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    Geogenic enrichment of fluoride in groundwater of hard rock aquifer in fluorosis prevalent area of Balangir district, Odisha, India
    (Elsevier B.V., 2022-08-28T00:00:00) Sahoo, Prafulla Kumar; Ray, Subhransu Bhusan; Kerketta, Anjali; Behera, Pintu; Neogi, Gautam; Sahoo, Himadri Bhusan
    Hydrogeochemical characterization of groundwater has been carried out in a hard rock aquifer from Balangir district, a fluorosis-affected area of Odisha, India with the aim of understanding the sources and processes controlling fluoride (F?) enrichment. A total of 37 groundwater (tube wells) and 7 surface water (pond) samples were collected during the pre-monsoon period. Groundwaters are mostly categorized as moderate to very hard water types with alkaline nature. The enhanced Na+ and HCO3? concentration in groundwater is mostly a result of silicate weathering. The F? concentration in groundwater ranged from 0.4 to 4.29 mg/l, with 38% of samples exceeded the drinking water limit (1.5 mg/l; as prescribed by the World Health Organization, 2011), in contrast to very low F? (<0.9 mg/l) in surface water. High F? concentrations in underlying granitic bedrocks (up to 700 mg/kg), which spatially corresponds to F? rich groundwater, suggest that lithological composition is the main control of F?. Fluoride-rich waters are mostly Na�HCO3 type, followed by mixed Na�Ca�HCO3 (Cl) type with Na+/Ca2+ ratio >1. The significant positive correlations of F? with Na+, HCO3?, and pH indicate that the weathering of sodium-rich silicate minerals and increase of pH mobilizes F? ion. Geochemical modeling indicates that the activity of F? in groundwater increased by precipitation of calcite, dolomite, and aragonite. Fluoride risk assessment indicates that 38% of groundwater samples can cause a high prevalence of dental fluorosis with children being at greater risk than adults. Henceforth, it is advisable to treat this contaminated groundwater before consumption or provide alternative drinking water to avoid further fluorosis risks in the concerned area. � 2022 Elsevier B.V.
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    Trace Element Occurrence in Vegetable and Cereal Crops from Parts of Asia: A Meta-data Analysis of Crop-Wise Differences
    (Springer Science and Business Media Deutschland GmbH, 2023-02-13T00:00:00) Kerketta, Anjali; Kumar, Hemant; Powell, Mike A.; Sahoo, Prafulla Kumar; Kapoor, Harmanpreet Singh; Mittal, Sunil
    In the present study, a systematic review along with a meta-analysis was conducted based on relevant studies from 11 Asian countries (1999�2022, Scopus, PubMed, MEDLINE, ScienceDirect, and Google Scholar) to evaluate the crop-wise differences in the accumulation of trace element (TE) in the edible part of different crops (vegetables: leafy (LV), root (RV), fruit (FV); cereal crops: rice (RIC), wheat (WHE), maize (MAZ)). Based on the median concentration�of the compiled data, the TE accumulation in different vegetable crops was ranked in the decreasing order of Fe > Zn > Mn > Cu > Ni > Cr > Pb > Co > Se > Cd > As, and in cereal crops, this is followed as Fe > Zn > Cu > Ni > Cr > Co > Pb > As > Se > Cd > Hg. A clear difference was found between vegetable categories, with a higher accumulation of most of the elements in LV, especially spinach, coriander, radish leaves, mustard, amaranthus, and pakchoi than other vegetable types. Root vegetables displayed higher bioconcentration factors (BCF) than the other two vegetable types. For cereal crops, higher metal contents were found in WHE followed by RIC and MAZ, but RIC had relatively higher BCF for certain metals (As, Cd, Cu, Cr, Ni) and WHE dominated for the remaining metals. When compared with the prescribed safe limits of the non-essential metals (As, Cd, and Pb), this study revealed that the majority of the vegetable and cereal crop contaminations were from Bangladesh, China, India, Iran, and Pakistan. � 2023, The Author(s), under exclusive licence to Springer Nature Switzerland AG.