Surface water quality evaluation of Mahanadi and its Tributary Katha Jodi River, Cuttack District, Odisha, using WQI, PLSR, SRI, and geospatial techniques

Applied Water Science, Journal Year: 2025, Volume and Issue: 15(2)

Published: Jan. 23, 2025

Language: Английский

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Tracking the spatiotemporal evolution of groundwater chemistry in the Quaternary aquifer system of Debrecen area, Hungary: integration of classical and unsupervised learning methods

Environmental Science and Pollution Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Abstract Monitoring changes in groundwater quality over time helps identify time-dependent factors influencing water safety and supports the development of effective management strategies. This study investigates spatiotemporal evolution chemistry Debrecen area, Hungary, from 2019 to 2024, using indexing, machine learning, multivariate statistical techniques. These techniques include self-organizing maps (SOM), hierarchical cluster analysis (HCA), principal component (PCA), indexing (GWQI). The hydrochemical revealed that Ca-Mg-HCO₃ is dominant type, with a temporal shift toward Na-HCO₃, reflecting increased salinity driven by ongoing rock-water interactions. SOM showed transition heterogeneous more uniform time, suggesting greater stability aquifer system. Elevated zones shifted spatially due recharge flow patterns, while hardness intensified expanded, indicating continued carbonate dissolution. HCA highlighted shifts composition, six clusters identified five gradual homogenization quality. PCA further confirmed this trend, linking it underlying processes, such as water–rock interactions, limited contributions anthropogenic influences. GWQI indicated general improvement most regions meeting drinking standards. However, specific areas exhibited signs localized contamination, requiring targeted management. findings underscore importance continuous monitoring detect emerging trends guide resource highlights need for sustainable practices safeguard resources ensure long-term security area.

Language: Английский

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Spatial distribution of physicochemical parameters and drinking and irrigation water quality indices in the Jhelum River

Environmental Geochemistry and Health, Journal Year: 2024, Volume and Issue: 46(8)

Published: July 1, 2024

Language: Английский

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Hydrogeological studies of the Sepidan basin to supply required water from exploiting water wells of the Chadormalu mine utilizing reverse osmosis (RO) method

Results in Earth Sciences, Journal Year: 2023, Volume and Issue: 2, P. 100012 - 100012

Published: Dec. 30, 2023

Due to the lack of rainfall potential in Central Iran, water scarcity is still main problem production country. Accordingly, use unconventional waters will be inevitable. This study presents amount required by Chadormalu mine from wells Sepidan Plain, as well deficit or excess for exploiting complex and treatment plant reverse osmosis (RO) method. These studies were carried out manage groundwater resources Saghand basins include level variations piezometers, consumption exploitive wells, aqueducts, River every month. Furthermore, a sample complete chemical analysis aqueducts' basin entering RO leaving it environmental evaluations have been each season. The average discharges Plain 86.45 82.28 l/s 2221 2023, respectively. Moreover, exploitation has lower than renewable (dynamic) reserves, which heart intake uniform increase monthly hydrograph's level. At same time, reduction total dissolved solids (TDS) intakes 580 mg/l indicates principled dynamic reserves. unit's output had no effect on quality Playa's but improved qualitatively.

Language: Английский

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Driving mechanism of groundwater quality and probabilistic health risk quantification in the central Yinchuan Plain

Environmental Research, Journal Year: 2024, Volume and Issue: 261, P. 119728 - 119728

Published: Aug. 2, 2024

Language: Английский

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Identification and Mechanistic Analysis of Toxic Degradation Products in the Advanced Oxidation Pathways of Fluoroquinolone Antibiotics

Toxics, Journal Year: 2024, Volume and Issue: 12(3), P. 203 - 203

Published: March 6, 2024

The degradation of fluoroquinolones (FQs) via advanced oxidation processes (AOPs) is a promising avenue, yet the complete mineralization certain FQ molecules remains elusive, raising concerns about formation toxic by-products. This study delineates five primary AOP pathways for 16 commercially available molecules, inferred from existing literature. Density functional theory (DFT) was employed to calculate bond dissociation energies within these elucidate correlation between strength and molecular architecture. Subsequently, Comparative Molecular Similarity Index Analysis (CoMSIA) models were constructed various reactions, including piperazine ring cleavage, defluorination, hydroxylation, hydroxylation. Three-dimensional contour maps generated provide deeper understanding interplay structure energy. Furthermore, toxicity predictions their intermediates, conducted using VEGA 1.2.3 software, indicate that products P2 P5 pose heightened health risk relative parent compounds. application Multwfn program compute Fukui function discerns disparity in propensities, highlighting N atoms with higher f0 values can augment likelihood cleavage. HOMO-LUMO distribution diagrams further confirm methoxy substitution at 1-position leads dilution HOMOs on an increased energy gap free radical diminishing reactivity hydroxyl radicals. elucidates pivotal role structural characteristics antibiotics efficiency AOPs unveils underlying mechanisms disparities. parameter intermediates offer unique perspectives theoretical underpinnings mitigating use high-risk FQs devising targeted strategies circumvent generation through optimization.

Language: Английский

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Surface water potential zones delineation and spatiotemporal variation characteristics of water pollution and the cause of pollution formation in Brahmani River Basin, Odisha

HydroResearch, Journal Year: 2024, Volume and Issue: 8, P. 99 - 112

Published: Oct. 12, 2024

Language: Английский

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Integrated Hydrochemical Assessment of Groundwater Quality in El-Mahmel Plain, Algeria: A Hydrochemical, Water Quality Index and Multivariate Statistical Approach

Water Air & Soil Pollution, Journal Year: 2025, Volume and Issue: 236(7)

Published: May 6, 2025

Language: Английский

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Integrated Geochemical Analysis of Groundwater Quality and Human Health Risks by Using Multivariate Statistical Methods: A Case Study of Mayurbhanj District, Odisha, India

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: April 9, 2024

Abstract Mayurbhanj district is predominantly inhabited by tribal communities. Among the various groups in Odisha, alone accommodates 45 distinct categories. These communities primarily rely on natural water sources such as rivers, streams, and tube wells for drinking purposes without undergoing additional purification processes. Hence, investigating factors affecting groundwater quality essential to ensure its safety mitigate health risks associated with consumption of contaminated water. In present study, 145 samples from different was analysed. The geographical coordinates sample locations measurements parameters were used Geographic Information System software, ArcGIS pro, construct spatial distribution variation maps. Five significant principal components having eigen value greater than 1 total variance 73.43. Kaiser-Meyer-Olkin (KMO) test above 0.5 which shows that data collected study area are accurate analysis. Electrical conductivity, F − , pH NO 3 varies range 42 1754 µS/cm, 0.01 1.97 mg/l, 5.5 7.9 0.1 21.2 mg/l respectively. non-carcinogenic risk assessment indicates hazard quotient (HQ) values attributed fluoride ion nitrate exposure 0.43 0.46 children 0.23 0.26 adults, 0.002 0.6 0.001 0.3 comparatively at slightly more prone comparison adults. Gibbs diagram most comes region rock-water interaction dominance plot TDS vs chloride concentration. loading biplot area, first component horizontal axes has positive coefficients carbonate, chloride, bicarbonate, alkalinity, calcium hardness, magnesium dissolved solids, electrical fluoride. correlation EC (0.98), (0.525), (0.445), sulphate hardness (0.438), alkalinity (0.524), carbonate (0.528) bicarbonate (0.535). software statistical are, Minitab, Origin SPSS. results this would be useful Government policy makers provide safe community.

Language: Английский

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Regional scale evaluation of nitrate fluctuations in groundwater using cluster analysis and standardised hydrometeorological indices

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 634, P. 131052 - 131052

Published: March 11, 2024

Temporal fluctuations in nitrate groundwater can result concentrations temporarily exceeding drinking water standards. This bring about the need for costly treatment or blending. Despite this, extent and potential controls on these are poorly understood, particularly at regional to national scales. Applied Southeast England (UK), here we develop first application of cluster analysis standardised hydrometeorological indices evaluate scale. Hierarchical K-means 96 time series period 1995–2022 showed that be divided into 4 clusters: (1) long term increasing trends (n = 23, mean trend 0.26 mg NO3/l/a), (2) decreasing 19, − 0.65 (3) with seasonal 24, 0.29 NO3/l/a) (4) superimposed near-decadal scale 30, 0.22 NO3/l/a). Boreholes 1 appear deeper than boreholes 2. In comparison shallower boreholes, likely intersecting longer flow systems where affected by historic "legacy nitrate" leaching. There is weak spatial coherence clustering, clusters 3 present South North Downs respectively. Cross-correlation between precipitation level rapid associated rapidly responding fluctuation. due highly fractured faulted nature Chalk aquifer this area. contrast slower Downs. The strongest correlations levels occurred when cross-correlating a lag zero months, which would suggest matrix diffusion unlikely significant control seasonality. Seasonal combination piston displacement table changing paths borehole. Future climate change may magnitude timing caused processes. methodology developed generic applied wherever there large body data.

Language: Английский

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