Groundwater for Sustainable Development最新文献

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Seasonal changes in subsurface characteristics in the Lower Bengal Basin: Potential impacts on groundwater 下孟加拉盆地地下特征的季节性变化:对地下水的潜在影响
IF 4.9
Groundwater for Sustainable Development Pub Date : 2024-11-01 DOI: 10.1016/j.gsd.2024.101368
Piya Mohasin , G. Sumanth Kumar , Tanvi Arora , Sujata Ray
{"title":"Seasonal changes in subsurface characteristics in the Lower Bengal Basin: Potential impacts on groundwater","authors":"Piya Mohasin ,&nbsp;G. Sumanth Kumar ,&nbsp;Tanvi Arora ,&nbsp;Sujata Ray","doi":"10.1016/j.gsd.2024.101368","DOIUrl":"10.1016/j.gsd.2024.101368","url":null,"abstract":"<div><div>The risk of groundwater depletion is most significant if anthropogenic withdrawals are high in regions where the subsurface characteristics do not favor surface water infiltration and natural recharge. However, such regions have not been identified systematically in the Indo-Gangetic basin, one of the most fertile alluvial aquifers in the world. This identification may be enabled by a study of how seasonal changes in subsurface characteristics affect groundwater levels. We conducted a resistivity survey in Nanoor block of the Lower Ganges Basin, where groundwater levels have declined steeply in recent decades, to determine how subsurface characteristics controlling infiltration and groundwater quality may change seasonally. Vertical Electrical Soundings (VES) using the Schlumberger electrode array were conducted over an 8 km² area with an electrode spacing of 180-200 meters during the pre-monsoon (April 2018) and post-monsoon (October 2018) seasons. Seasonal variations in the Dar- Zarrouk parameters: longitudinal conductance, transverse resistance, and the coefficient of anisotropy were evaluated. While the average longitudinal conductance remained unchanged across seasons, it increased in certain locations in post-monsoon, indicating potential risks of contamination from the surface. The transverse resistance significantly increased in the post-monsoon, suggesting reduced groundwater potential. Additionally, in some areas, the coefficient of anisotropy indicated increased compaction of overburden layers in the post-monsoon, suggesting decreased natural recharge potential. Finally, the thickness of the unsaturated zone increased significantly from pre-monsoon to post-monsoon, which may be attributed to groundwater withdrawal for irrigation during the Kharif cropping season. These results indicate that this region, heavily reliant on groundwater for irrigation, is characterized by subsurface properties that allow limited natural recharge potential. This study may provide a framework for managing groundwater resources in developing countries where anthropogenic withdrawals are likely to have a more significant impact on groundwater levels than reduced natural recharge due to changing rainfall characteristics.</div></div>","PeriodicalId":37879,"journal":{"name":"Groundwater for Sustainable Development","volume":"27 ","pages":"Article 101368"},"PeriodicalIF":4.9,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Global status, risk assessment, and knowledge gaps of microplastics in groundwater: A bibliometric analysis 地下水中微塑料的全球现状、风险评估和知识缺口:文献计量分析
IF 4.9
Groundwater for Sustainable Development Pub Date : 2024-11-01 DOI: 10.1016/j.gsd.2024.101375
Laura Sforzi , Chiara Sarti , Saul Santini , Tania Martellini , Alessandra Cincinelli
{"title":"Global status, risk assessment, and knowledge gaps of microplastics in groundwater: A bibliometric analysis","authors":"Laura Sforzi ,&nbsp;Chiara Sarti ,&nbsp;Saul Santini ,&nbsp;Tania Martellini ,&nbsp;Alessandra Cincinelli","doi":"10.1016/j.gsd.2024.101375","DOIUrl":"10.1016/j.gsd.2024.101375","url":null,"abstract":"<div><div>Microplastics pollution is little studied in groundwater, compared to other surface water environments. In this review, bibliometric tools were used to determine literature trends and investigate research interests to provide a comprehensive knowledge on this research topic. 215 articles, published between 2009 and 2024, were obtained from the Scopus database, and their bibliometric data were statistically analyzed using the ‘bibliometrix’ package in R, to determine annual productivity, countries, authors, sources and citations. The co-authorship map and keywords co-occurrence analysis were obtained using VOSviewer and SCImago Graphica interfaces. Samples collection, methods, abundances, and polymers type differed significantly across research. Furthermore, keywords extraction revealed that only a minor fraction (4.6 %) of the total number of articles concerned drinking water sources and ecological risk assessment. This is a critical aspect of this field of research, as the contamination of drinking water sources could lead to the ingestion of microplastics, posing serious risk to biodiversity and human health. Furthermore, the absence of common legislation significantly affects the extent of this contamination. Monitoring studies of MP pollution in groundwater are necessary to develop targeted mitigation strategies to preserve human and environmental health. Finally, the lack of standardized protocols for sampling and analysis methods is a pressing need to encourage further studies on MPs in groundwater and to enable comparison of studies.</div></div>","PeriodicalId":37879,"journal":{"name":"Groundwater for Sustainable Development","volume":"27 ","pages":"Article 101375"},"PeriodicalIF":4.9,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Shallow groundwater potential mapping and evaluation for climate resilient smallholder irrigation in the Zeway-Shalla Sub-basin, Ethiopia 埃塞俄比亚 Zeway-Shalla 小流域浅层地下水潜力测绘与评估,促进具有气候复原力的小农灌溉
IF 4.9
Groundwater for Sustainable Development Pub Date : 2024-11-01 DOI: 10.1016/j.gsd.2024.101367
Taye Alemayehu Hulluka , Girma Yimer Ebrahim , Alemseged Tamiru Haile , Amare Haileslassie
{"title":"Shallow groundwater potential mapping and evaluation for climate resilient smallholder irrigation in the Zeway-Shalla Sub-basin, Ethiopia","authors":"Taye Alemayehu Hulluka ,&nbsp;Girma Yimer Ebrahim ,&nbsp;Alemseged Tamiru Haile ,&nbsp;Amare Haileslassie","doi":"10.1016/j.gsd.2024.101367","DOIUrl":"10.1016/j.gsd.2024.101367","url":null,"abstract":"","PeriodicalId":37879,"journal":{"name":"Groundwater for Sustainable Development","volume":"27 ","pages":"Article 101367"},"PeriodicalIF":4.9,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Critical analysis of enhanced microbial bioremediation strategies of PAHs contaminated sites: Toxicity and techno-economic analysis 多环芳烃污染场地强化微生物生物修复战略的关键分析:毒性和技术经济分析
IF 4.9
Groundwater for Sustainable Development Pub Date : 2024-11-01 DOI: 10.1016/j.gsd.2024.101369
Y.P. Ragini , Jeyanthi Palanivelu , R.V. Hemavathy
{"title":"Critical analysis of enhanced microbial bioremediation strategies of PAHs contaminated sites: Toxicity and techno-economic analysis","authors":"Y.P. Ragini ,&nbsp;Jeyanthi Palanivelu ,&nbsp;R.V. Hemavathy","doi":"10.1016/j.gsd.2024.101369","DOIUrl":"10.1016/j.gsd.2024.101369","url":null,"abstract":"<div><div>Polycyclic aromatic hydrocarbons (PAHs) pose significant threats to environmental integrity and public health due to their high toxicity, persistence, and potential for bioaccumulation. In contaminated soils, PAH concentrations typically range from 1 to 100 mg/kg, with severely polluted areas reaching up to 1000 mg/kg. Conventional bioremediation techniques, limited to 30–50% efficiency, underscore the need for more effective solutions. This review highlights recent advancements in microbial bioremediation strategies, demonstrating removal efficiencies of 80–90% through the utilization of functional microorganisms, which metabolize PAHs into non-toxic compounds. Innovative techniques such as genetic engineering, microbial immobilization, and nanotechnology are shown to achieve over 90% pollutant removal. The review discusses key metabolic pathways and enzymatic processes driving PAH degradation, such as ring-hydroxylation and oxygenation. Techno-economic assessments indicate up to 40% cost savings and improved energy efficiency compared to conventional methods, facilitating scalability for large-scale environmental restoration projects. Microbial solutions for groundwater pollution, where PAH levels often exceed the maximum contaminant level (MCL) of 0.2 μg/L, are found to be highly effective in mitigating ecological risks and protecting public health. This comprehensive analysis highlights the promising role of advanced microbial bioremediation techniques in addressing PAH contamination across diverse ecosystems, including soils, sediments, and aquatic environments.</div></div>","PeriodicalId":37879,"journal":{"name":"Groundwater for Sustainable Development","volume":"27 ","pages":"Article 101369"},"PeriodicalIF":4.9,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Geothermal aided advanced desalination of highly saline water: From technology development to seasonal impact optimization 地热辅助先进的高盐度海水淡化技术:从技术开发到季节性影响优化
IF 4.9
Groundwater for Sustainable Development Pub Date : 2024-11-01 DOI: 10.1016/j.gsd.2024.101379
Dipti Chaudhary , Anirbid Sircar , Roshni Kumari , Namrata Bist , Kriti Yadav , Kelvy P. Dalsania
{"title":"Geothermal aided advanced desalination of highly saline water: From technology development to seasonal impact optimization","authors":"Dipti Chaudhary ,&nbsp;Anirbid Sircar ,&nbsp;Roshni Kumari ,&nbsp;Namrata Bist ,&nbsp;Kriti Yadav ,&nbsp;Kelvy P. Dalsania","doi":"10.1016/j.gsd.2024.101379","DOIUrl":"10.1016/j.gsd.2024.101379","url":null,"abstract":"<div><div>Access to clean drinking water is a critical global imperative, particularly in regions facing water scarcity. The present study aims to explore a sustainable approach for enhancing water quality by desalinating geothermal water which is extracted from a geothermal hotspot at Dholera, Gujarat. Since there is a shortage of clean and potable water in the area, it is advisable to use this renewable resource for drinking and irrigation purpose after treatment through a suitable method powered by organic rankine cycle (ORC) which not only serves the aim of sustainable approach but also has minimum environmental impact. The investigation illustrates fabrication and demonstration of geothermal-aided desalination unit and its plant set up at the study area for qualitative desalination of highly saline water. The system's performance is evaluated for seasonal variations in geothermal water, both before and after desalination. Results shows a significant reduction in contaminants, with decrease in salinity by 95.30% and total dissolved solids (TDS) by 96.91%. The novelty of this approach lies in salt extraction from the by-product of rejected water, contributing to resource recovery. This approach demonstrates an environmentally friendly and sustainable solution to address water scarcity in the region which is aligned with sustainable development goals (SDGs). The process's effectiveness for implementation is suggested by the strong p-values (all &lt;0.001). Additionally, the Cohen's d values, which are noticeably high across all parameters, indicate strong effect sizes ensuring desalination's viability for practical uses such as irrigation and safe drinking.</div></div>","PeriodicalId":37879,"journal":{"name":"Groundwater for Sustainable Development","volume":"27 ","pages":"Article 101379"},"PeriodicalIF":4.9,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating dominant factors of coliform contamination in shallow groundwater: A logistic regression and AHP approach 调查浅层地下水大肠菌群污染的主要因素:逻辑回归和 AHP 方法
IF 4.9
Groundwater for Sustainable Development Pub Date : 2024-11-01 DOI: 10.1016/j.gsd.2024.101384
Enda Kalyana Putri , Suprihanto Notodarmojo , Rosetyati Retno Utami
{"title":"Investigating dominant factors of coliform contamination in shallow groundwater: A logistic regression and AHP approach","authors":"Enda Kalyana Putri ,&nbsp;Suprihanto Notodarmojo ,&nbsp;Rosetyati Retno Utami","doi":"10.1016/j.gsd.2024.101384","DOIUrl":"10.1016/j.gsd.2024.101384","url":null,"abstract":"<div><div>Shallow groundwater is a crucial source of clean water in developing countries like Indonesia. However, population growth has led to declining water quality due to inadequate infrastructure. This study aimed to identify dominant factors contributing to coliform contamination in shallow groundwater, addressing the lack of detailed statistical and multicriteria analyses in previous large-scale studies. The study was conducted in a densely populated urban area in Yogyakarta, Indonesia, and total coliform measurements from 42 groundwater samples were used as the independent variable. There are 14 dependent variables, categorized into three aspects: infrastructure (e.g., well type, well depth, wall of well, DEWATS type, well distance to the septic tank, latrine, and other contaminant sources); specific (e.g., population density and land use); and intrinsic (e.g., groundwater level, rainfall, soil type, and slope). Those parameters were statistically analyzed using logistic regression with IBM SPSS 26 software, and supported by the Analytical Hierarchy Process (AHP) that was employed using Expert Choice software to prioritize the factors. The results showed that 83.3% of the shallow groundwater samples exceeded the acceptable limits for total coliform, with key factors including well's proximity to other contamination sources, slope, distance from septic tanks, groundwater level, and population density. These findings highlight the importance of considering complex environmental factors in managing groundwater quality, particularly in developing countries. It is recommended that local authorities implement stricter regulations and infrastructure improvements to mitigate contamination risks.</div></div>","PeriodicalId":37879,"journal":{"name":"Groundwater for Sustainable Development","volume":"27 ","pages":"Article 101384"},"PeriodicalIF":4.9,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142724111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Controversial insights into irrigation water quality in arid and semi-arid regions using AI driven predictions: Case of southern Gabès 利用人工智能预测对干旱和半干旱地区灌溉水质的争议性见解:加贝斯南部案例
IF 4.9
Groundwater for Sustainable Development Pub Date : 2024-11-01 DOI: 10.1016/j.gsd.2024.101381
Khyria Wederni , Boulbaba Haddaji , Younes Hamed , Salem Bouri , Nicolò Colombani
{"title":"Controversial insights into irrigation water quality in arid and semi-arid regions using AI driven predictions: Case of southern Gabès","authors":"Khyria Wederni ,&nbsp;Boulbaba Haddaji ,&nbsp;Younes Hamed ,&nbsp;Salem Bouri ,&nbsp;Nicolò Colombani","doi":"10.1016/j.gsd.2024.101381","DOIUrl":"10.1016/j.gsd.2024.101381","url":null,"abstract":"<div><div>Effective groundwater management is critical in arid and semi-arid regions, where water resources are essential for agriculture. This study assesses the Irrigation Water Quality Index (IWQI) of the Southern Gabès aquifer in Tunisia using a combination of traditional hydrochemical analysis and machine learning models—specifically, Classification and Regression Tree (CART) and Support Vector Machine (SVM). A total of 83 groundwater samples were analyzed based on five key parameters: Electrical Conductivity (EC), Sodium Adsorption Ratio (SAR), Chloride (Cl-), Sodium (Na+), and Bicarbonate (HCO3-). The results show that the CART model demonstrated superior performance with an R<sup>2</sup> value of 0.99 and a Root Mean Square Error (RMSE) of 0.43, while the SVM model achieved an R<sup>2</sup> of 0.87. These findings underscore CART's robustness in predicting IWQI, offering high precision even with limited datasets.</div><div>The groundwater quality was categorized, revealing that 62% of samples were classified as \"satisfactory\" for irrigation, while 31% were deemed \"unsuitable\" without treatment, highlighting areas of concern for agricultural use. The study also emphasizes the importance of continuous monitoring and adaptive management strategies to ensure sustainable water use in the region.</div><div>Overall, this research demonstrates the effectiveness of machine learning models, particularly CART, in accurately assessing groundwater quality. These insights provide valuable tools for resource managers to make informed decisions, ensuring the sustainable exploitation of groundwater in arid and semi-arid regions. The findings pave the way for future research and policy development in water resource management.</div></div>","PeriodicalId":37879,"journal":{"name":"Groundwater for Sustainable Development","volume":"27 ","pages":"Article 101381"},"PeriodicalIF":4.9,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessing anthropogenic and natural influences on water quality in a critical shallow groundwater system: Insights from the Metauro River basin (Central Italy) 评估人类活动和自然因素对重要浅层地下水系统水质的影响:梅陶罗河流域(意大利中部)的启示
IF 4.9
Groundwater for Sustainable Development Pub Date : 2024-10-19 DOI: 10.1016/j.gsd.2024.101361
Marco Taussi , Giovanni Vespasiano , Lorenzo Chemeri , Roberta Bonì , Barbara Nisi , Orlando Vaselli , Antonio Delgado-Huertas , Carmine Apollaro , Daniele Tardani , Daniele Farina , Alberto Renzulli
{"title":"Assessing anthropogenic and natural influences on water quality in a critical shallow groundwater system: Insights from the Metauro River basin (Central Italy)","authors":"Marco Taussi ,&nbsp;Giovanni Vespasiano ,&nbsp;Lorenzo Chemeri ,&nbsp;Roberta Bonì ,&nbsp;Barbara Nisi ,&nbsp;Orlando Vaselli ,&nbsp;Antonio Delgado-Huertas ,&nbsp;Carmine Apollaro ,&nbsp;Daniele Tardani ,&nbsp;Daniele Farina ,&nbsp;Alberto Renzulli","doi":"10.1016/j.gsd.2024.101361","DOIUrl":"10.1016/j.gsd.2024.101361","url":null,"abstract":"<div><div>This work aims at the hydro-geochemical and isotopic characterization of the water resource (surface water and shallow phreatic aquifer) of the Metauro River catchment (Marche, Central Italy). The waters of the Metauro River area represent a fundamental resource exploited daily for drinking, agricultural, and industrial uses. The anthropic pressure exposes the water resources to depletion and quality degradation risks, making the study area of high scientific and social interest. The hydro-geochemical approach revealed that the interaction between water and local lithologies led to Ca<sup>2+</sup>-HCO<sub>3</sub><sup>-</sup> compositions, with less frequent Na<sup>+</sup>(K<sup>+</sup>)-Cl<sup>-</sup> and Ca<sup>2+</sup>-Cl<sup>-</sup> hydrofacies and variable salinity (up to 55 meq/L). Most waters showed natural (e.g., halite and evaporite contribution) and anthropogenic (sewage, septic tanks, manure, urban wastewater, and industrial effluents contribution) inputs confirmed by both Na<sup>+</sup>, Cl<sup>−</sup>, NO<sub>3</sub><sup>−</sup>, and SO<sub>4</sub><sup>2−</sup> enrichments and high Cl/Br ratios. The anthropogenic contributions is further confirmed by the relatively high contents of TPTEs (Total Potentially Toxic Elements), even though these elements individually present values below the Italian Normative Legislative limit. Geochemical issues are mitigated during the year when the surface aquifer is recharged by the river, characterized by a better overall chemical quality. The occurrence of this relationship is of interest to the local authorities in charge of the water resource management. In fact, groundwater exploitation could be increased during specific periods, thus decreasing the anthropic pressure on the river waters, usually exploited for drinking purposes even during the summer seasons when the hydrometric levels drastically drop. The adopted multidisciplinary approach provides an effective tool for accurately determining groundwater processes and can be helpful in improving the balanced and sustainable management of water resources in coastal and non-coastal plains.</div></div>","PeriodicalId":37879,"journal":{"name":"Groundwater for Sustainable Development","volume":"27 ","pages":"Article 101361"},"PeriodicalIF":4.9,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microplastics in water from the Cooum River, Chennai, India: An assessment of their distribution, composition, and environmental impact 印度钦奈库姆河水中的微塑料:对其分布、组成和环境影响的评估
IF 4.9
Groundwater for Sustainable Development Pub Date : 2024-10-18 DOI: 10.1016/j.gsd.2024.101362
J. Mohamed Afzal , S. Selvam , P. Saravanan , Priyadarsi D. Roy , P. Sanju , P. Muthukumar
{"title":"Microplastics in water from the Cooum River, Chennai, India: An assessment of their distribution, composition, and environmental impact","authors":"J. Mohamed Afzal ,&nbsp;S. Selvam ,&nbsp;P. Saravanan ,&nbsp;Priyadarsi D. Roy ,&nbsp;P. Sanju ,&nbsp;P. Muthukumar","doi":"10.1016/j.gsd.2024.101362","DOIUrl":"10.1016/j.gsd.2024.101362","url":null,"abstract":"<div><div>Widespread nature of microplastics in rivers and their tributaries causes enormous harm to the aquatic environment. The present study investigates quantity, color, size, form, and composition of microplastics present in water from the Cooum River of Chennai in India. A total of 341 microplastics observed in water samples (n = 10) were characterized by transparent particles (42%) of mainly polyethylene terephthalate (PET) and polypropylene (PP). About 69% of the particles with size &lt;1000 μm raise the possibility of being ingested by aquatic species. Fiber was the most common shape (48%), followed by film (20%), pellets (12%), fragments (12%), beads (5%), and foam (4%). Variable abundances of different shapes demonstrate a variety of sources, including the textile fibers and plastic breakdown. Polymers with high-risk ratings such as nylon and polypropylene are reflected with an estimated high Polymer Hazard Index (PHI &gt;1000) in some samples. Pollution Load Index suggested that samples along the river are moderately contaminated with microplastics. However, the Polymer Hazard Index (PERI) showed low ecological risk in the metropolitan area, river mouth, and potential fishing zones. These findings highlight ecological impact from the ubiquity of microplastics in waters from the Cooum River. Thus, the minimizing of microplastic pollution would require immediate action, including the implementation of stringent waste management and pollution reduction techniques.</div></div>","PeriodicalId":37879,"journal":{"name":"Groundwater for Sustainable Development","volume":"27 ","pages":"Article 101362"},"PeriodicalIF":4.9,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of salinity-clay variation on the transient magnetic field in the Quaternary aquifer, theoretically and practically 盐度-粘土变化对第四纪含水层瞬态磁场的理论和实践影响
IF 4.9
Groundwater for Sustainable Development Pub Date : 2024-10-16 DOI: 10.1016/j.gsd.2024.101360
A.A. Mustafa , A. S. A. Abu El-Ata , A.K. Kamal , A.M.S. Lala , A.I. Ammar
{"title":"Effect of salinity-clay variation on the transient magnetic field in the Quaternary aquifer, theoretically and practically","authors":"A.A. Mustafa ,&nbsp;A. S. A. Abu El-Ata ,&nbsp;A.K. Kamal ,&nbsp;A.M.S. Lala ,&nbsp;A.I. Ammar","doi":"10.1016/j.gsd.2024.101360","DOIUrl":"10.1016/j.gsd.2024.101360","url":null,"abstract":"<div><div>This study focuses on understanding the physical foundations of the transient electromagnetic method, such as the transition from a simple basic principle to a more complex principle, starting from the Biot-Savart law until the current concept. It calculates the steady and transient magnetic fields around any electrical wire system. Accordingly, this law will be used to determine the magnetic field around the square loop configuration, which matches the magnetic field arising from the circular loop configuration. The square loop equation was derived and extended to include changes in the half-space, which allows us to understand how the electromagnetic waves travel in the subsurface and the farthest point, that can record the TEM response from the TEM loop, according to the loop size and loop current. Accordingly, the deduced equations were applied to predict the transient magnetic field curves of the Quaternary aquifer in three different water zones along the Nile delta, depending on the values of resistivity and chargeability caused by the variations in salinity and clay contents. The calculated transient magnetic curves were then compared with other measured field curves to confirm the validity of the derived equations. Therefore, these curves are expected to be used as guide curves for the transient magnetic field response in this aquifer. Also, these curves are important in estimating the hydro-geophysical characteristics of the main groundwater aquifer in the selected area and in other areas with the same geologic and hydrogeologic settings. Also, a common model is presented for any delta environment in the world in measured and calculated data.</div></div>","PeriodicalId":37879,"journal":{"name":"Groundwater for Sustainable Development","volume":"27 ","pages":"Article 101360"},"PeriodicalIF":4.9,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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