Cleaner Water最新文献_第4页

Trends of groundwater level and driving factors in Sagar and Satna smart cities in eastern Madhya Pradesh, Central India 印度中央邦东部Sagar和Satna智慧城市地下水位趋势及驱动因素

Cleaner Water

Pub Date : 2025-11-24 DOI: 10.1016/j.clwat.2025.100183

Parvendra Kumar , Rekha Sahu , Rajnandini Gupta , Vikram Sharma , Tripti Jayal , Satya Prakash

Groundwater is a vital freshwater resource supporting livelihoods, agriculture, and ecosystems. However, degrading environment due to climate change and anthropogenic activities e.g. urban expansion and land use/land cover (LULC) dynamics has led towards its depletion. Particularly, conditions are worst at cities which experience both phenomena simultaneously. Therefore, present study investigates groundwater trends in Sagar and Satna smart cities of eastern Madhya Pradesh, Central India; characterized by semi-arid conditions, increasing climate variability and rapid LULC change. The study is based on groundwater data, acquired from the National Water Informatics Center, India. Geo-spatial datasets were utitlized to detect spatial changes in 2015 and 2022, a part of smart city project implementation period. Trends and their magnitude in groundwater levels are assessed through Mann-Kendall & Sen’s Slope, respectively. Additionally, one kilometre buffer zones around wells were created to evaluate the impact of LULC on groundwater level. The results of the study highlight similar groundwater trends in both cities. Annually, two stations in Sagar City showed stable and increasing water levels, while other exhibited steady decline. Although during pre-monsoon season, all stations showed a significant (increasing/decreasing) trend and no trend is reported in monsoon season. Annually, Satna-1 station of Satna city showed groundwater replenishment, while Satna-2 station showed decline in groundwater level. Ramtekri station remained stable at the same time. Geospatial analysis from 2015 to 2022 revealed a rapid urban expansion with built-up areas increasing by 98.29 % (Sagar) and 108.17 % (Satna), accompanied by significant vegetation loss 43.30 % and 72.63 %, respectively. Barren land surged, especially in Satna (196.99 %), while water bodies declined by up to 14.01 %, threatening recharge potential. In addition to LULC dynamics, proximity to lakes, topographic elevation are the primary and the climatic indicators are the secondary key factors influencing groundwater trends. Moreover, ground water stations nearby the surface water bodies and having lower elevation show no trends or replenishment.

地下水是支持生计、农业和生态系统的重要淡水资源。然而，由于气候变化和人为活动（如城市扩张和土地利用/土地覆盖动态）导致的环境退化导致其枯竭。特别是在同时经历这两种现象的城市，情况最糟糕。因此，本研究调查了印度中部中央邦东部Sagar和Satna智能城市的地下水趋势；以半干旱条件、气候变率增加和土地利用储量快速变化为特征。这项研究基于从印度国家水资源信息中心获得的地下水数据。利用地理空间数据集检测2015年和2022年的空间变化，这是智慧城市项目执行期的一部分。地下水水位的变化趋势及其幅度分别通过Mann-Kendall &； Sen 's Slope进行评估。此外，在水井周围建立了一公里的缓冲区，以评估LULC对地下水位的影响。研究结果表明，这两个城市的地下水趋势相似。每年，Sagar市的两个站点的水位稳定并上升，而其他站点的水位则稳步下降。虽然在季风前，所有监测站均有显著的（增加/减少）趋势，但在季风季节则无明显的趋势。每年，Satna市Satna-1站地下水补给，Satna-2站地下水水位下降。与此同时，Ramtekri站保持稳定。2015 - 2022年城市扩张迅速，建成区面积增加98.29 % （Sagar）和108.17 % (Satna)，植被损失显著，分别为43.30 %和72.63 %。荒地面积增加，其中以萨特纳地区最多（196.99 %），水体面积减少14.01 %，补给潜力受到威胁。除LULC动态外，邻近湖泊、地形高程是影响地下水趋势的主要因素，气候指标是次要因素。靠近地表水体和海拔较低的地表水站没有变化趋势和补给。

{"title":"Trends of groundwater level and driving factors in Sagar and Satna smart cities in eastern Madhya Pradesh, Central India","authors":"Parvendra Kumar , Rekha Sahu , Rajnandini Gupta , Vikram Sharma , Tripti Jayal , Satya Prakash","doi":"10.1016/j.clwat.2025.100183","DOIUrl":"10.1016/j.clwat.2025.100183","url":null,"abstract":"<div><div>Groundwater is a vital freshwater resource supporting livelihoods, agriculture, and ecosystems. However, degrading environment due to climate change and anthropogenic activities e.g. urban expansion and land use/land cover (LULC) dynamics has led towards its depletion. Particularly, conditions are worst at cities which experience both phenomena simultaneously. Therefore, present study investigates groundwater trends in Sagar and Satna smart cities of eastern Madhya Pradesh, Central India; characterized by semi-arid conditions, increasing climate variability and rapid LULC change. The study is based on groundwater data, acquired from the National Water Informatics Center, India. Geo-spatial datasets were utitlized to detect spatial changes in 2015 and 2022, a part of smart city project implementation period. Trends and their magnitude in groundwater levels are assessed through Mann-Kendall & Sen’s Slope, respectively. Additionally, one kilometre buffer zones around wells were created to evaluate the impact of LULC on groundwater level. The results of the study highlight similar groundwater trends in both cities. Annually, two stations in Sagar City showed stable and increasing water levels, while other exhibited steady decline. Although during pre-monsoon season, all stations showed a significant (increasing/decreasing) trend and no trend is reported in monsoon season. Annually, Satna-1 station of Satna city showed groundwater replenishment, while Satna-2 station showed decline in groundwater level. Ramtekri station remained stable at the same time. Geospatial analysis from 2015 to 2022 revealed a rapid urban expansion with built-up areas increasing by 98.29 % (Sagar) and 108.17 % (Satna), accompanied by significant vegetation loss 43.30 % and 72.63 %, respectively. Barren land surged, especially in Satna (196.99 %), while water bodies declined by up to 14.01 %, threatening recharge potential. In addition to LULC dynamics, proximity to lakes, topographic elevation are the primary and the climatic indicators are the secondary key factors influencing groundwater trends. Moreover, ground water stations nearby the surface water bodies and having lower elevation show no trends or replenishment.</div></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"5 ","pages":"Article 100183"},"PeriodicalIF":0.0,"publicationDate":"2025-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145841126","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

Exploration of Cu-Ba-Al layered triple oxide modified montmorillonite (MMT/Cu-Ba-Al-LTO) composite for efficient adsorption of brilliant green dye from aqueous solution Cu-Ba-Al层状三氧化物改性蒙脱土（MMT/Cu-Ba-Al- lto）复合材料对水溶液中亮绿色染料的高效吸附研究

Cleaner Water

Pub Date : 2025-11-18 DOI: 10.1016/j.clwat.2025.100182

Angita Sarkar , Fungbili Basumatary , Bipul Das , Sanjay Basumatary

Adsorption has emerged as a powerful treatment technique in response to growing concerns about the effects of water pollution on the environment and human health. This study investigates the use of Cu-Ba-Al layered triple oxide to modify montmorillonite in order to improve its capacity to adsorb Brilliant green dye. Utilizing Powder X-ray diffraction, Fourier Transform Infrared Spectroscopy, Field Emission Scanning Electron Microscope, High Resolution Transmission Electron Microscopy, and Brunauer-Emmett-Teller analyses, the materials were characterized. To obtain a greater adsorption efficiency of the modified montmorillonite (MMT/Cu-Ba-Al-LTO), a number of experimental parameters were optimized. With an initial dye concentration of 190 mg L⁻¹, an adsorbent dosage of 0.8 g L⁻¹, and an equilibrium time of 180 min, the adsorbent demonstrated a removal efficiency of 99.25 ± 0.02 % (r = 3, SD) at 32 °C. The maximum monolayer adsorption capacity of the adsorbent was estimated to be 520.83 ± 13.81 mg g⁻¹. The Dubinin-Radushkevich isotherm (R² = 0.99839, RMSE = 0.00623, reduced-χ² = 3.88 ×10⁻⁵) and pseudo-second-order kinetics (R² = 0.99954, RMSE = 0.00892, reduced-χ² = 7.96494 × 10⁻⁵) were found to be the best fitted models, suggesting a strong interaction between the adsorbent and adsorbate. An endothermic and spontaneous adsorption process was suggested by thermodynamic parameters such as a positive ΔH° and a negative ΔG°. After the third regeneration cycle, the material’s efficiency remained at 73.46 ± 0.04 % (r = 3, SD), demonstrating its effective reusability.

由于人们对水污染对环境和人类健康的影响日益关注，吸附法已成为一种强有力的处理技术。本文研究了用Cu-Ba-Al层状三氧化物对蒙脱土进行改性，以提高其对亮绿色染料的吸附能力。利用粉末x射线衍射、傅里叶变换红外光谱、场发射扫描电子显微镜、高分辨率透射电子显微镜和布鲁诺尔-埃米特-泰勒分析对材料进行了表征。为了获得改性蒙脱土（MMT/Cu-Ba-Al-LTO）更高的吸附效率，对实验参数进行了优化。染料初始浓度190 mg L−1,0.8的吸附剂用量 g L−1和180 分钟的平衡时间,演示的吸附剂去除效率99.25 ±0.02  % (r = 3,SD) 32°C。该吸附剂的最大单层吸附量为520.83 ± 13.81 mg g−1。Dubinin-Radushkevich等温线（R2 = 0.99839, RMSE = 0.00623，还原-χ2 = 3.88 ×10−5）和伪二级动力学（R2 = 0.99954, RMSE = 0.00892，还原-χ2 = 7.96494 × 10−5）是拟合的最佳模型，表明吸附剂和吸附物之间存在较强的相互作用。正ΔH°和负ΔG°的热力学参数表明吸热自发吸附过程。第三次再生循环后，材料的效率保持在73.46 ± 0.04 % (r = 3，SD)，表明材料具有有效的可重复利用性。

{"title":"Exploration of Cu-Ba-Al layered triple oxide modified montmorillonite (MMT/Cu-Ba-Al-LTO) composite for efficient adsorption of brilliant green dye from aqueous solution","authors":"Angita Sarkar , Fungbili Basumatary , Bipul Das , Sanjay Basumatary","doi":"10.1016/j.clwat.2025.100182","DOIUrl":"10.1016/j.clwat.2025.100182","url":null,"abstract":"<div><div>Adsorption has emerged as a powerful treatment technique in response to growing concerns about the effects of water pollution on the environment and human health. This study investigates the use of Cu-Ba-Al layered triple oxide to modify montmorillonite in order to improve its capacity to adsorb Brilliant green dye. Utilizing Powder X-ray diffraction, Fourier Transform Infrared Spectroscopy, Field Emission Scanning Electron Microscope, High Resolution Transmission Electron Microscopy, and Brunauer-Emmett-Teller analyses, the materials were characterized. To obtain a greater adsorption efficiency of the modified montmorillonite (MMT/Cu-Ba-Al-LTO), a number of experimental parameters were optimized. With an initial dye concentration of 190 mg L<sup>−1</sup>, an adsorbent dosage of 0.8 g L<sup>−1</sup>, and an equilibrium time of 180 min, the adsorbent demonstrated a removal efficiency of 99.25 ± 0.02 % (r = 3, SD) at 32 °C. The maximum monolayer adsorption capacity of the adsorbent was estimated to be 520.83 ± 13.81 mg g<sup>−1</sup>. The Dubinin-Radushkevich isotherm (R<sup>2</sup> = 0.99839, RMSE = 0.00623, reduced-χ<sup>2</sup> = 3.88 ×10<sup>−5</sup>) and pseudo-second-order kinetics (R<sup>2</sup> = 0.99954, RMSE = 0.00892, reduced-χ<sup>2</sup> = 7.96494 × 10<sup>−5</sup>) were found to be the best fitted models, suggesting a strong interaction between the adsorbent and adsorbate. An endothermic and spontaneous adsorption process was suggested by thermodynamic parameters such as a positive ΔH° and a negative ΔG°. After the third regeneration cycle, the material’s efficiency remained at 73.46 ± 0.04 % (r = 3, SD), demonstrating its effective reusability.</div></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"4 ","pages":"Article 100182"},"PeriodicalIF":0.0,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578712","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

Gamma irradiation: An effective, eco-friendly method for manufacturing high-performance, fouling-resistant polymeric ultrafiltration membranes 伽马辐射：一种有效的、环保的方法，用于制造高性能、抗污染的聚合物超滤膜

Cleaner Water

Pub Date : 2025-11-16 DOI: 10.1016/j.clwat.2025.100180

Kashyap Tailor , Sapna Gawali , Manish Kumar , Manish Kumar Sinha , Surendra Sasikumar Jampa

The development of membrane processes has accelerated across a variety of industries. Fouling is the most significant obstacle to the widespread use of polymeric membranes in pressure-driven membrane processes. Polymeric materials under the influence of gamma irradiation are subjected to chemical and structural changes across various dose ranges. This study investigates the influence of gamma radiation (0–70 kGy) on the performance of Polysulfone (PSF), Poly(vinylidene fluoride) (PVDF), and Polyether sulfone (PES) ultrafiltration membranes synthesized by the phase inversion method. Membrane characterization included Field Emission Scanning Electron Microscopy (FESEM), Liquid-liquid displacement porosimetry (LLDP), and ATR-FTIR. Performance was assessed via pure water flux (PWF), water contact angle, solute rejection (Humic Acid and BSA), and fouling analysis. The effect of gamma radiation was unequivocally positive, leading to superior filtration and fouling resistance. The study confirms that increasing radiation dosage resulted in significant changes, including a substantial decrease in water contact angle (increased hydrophilicity), pore enlargement followed by densification, and most critically, a significant reduction in irreversible fouling (Fir). These modifications yielded peak performance, such as 95.3 % HA rejection by the PES membrane, highlighting gamma irradiation as a novel, environmentally benign method for manufacturing high-performance, fouling-resistant membranes.

膜工艺的发展在各行各业都得到了加速。在压力驱动膜工艺中，污染是聚合物膜广泛应用的最大障碍。高分子材料在γ辐射影响下，在不同剂量范围内发生化学和结构变化。研究了γ辐射（0-70 kGy）对相转化法合成的聚砜（PSF）、聚偏氟乙烯（PVDF）和聚醚砜（PES）超滤膜性能的影响。膜的表征包括场发射扫描电镜（FESEM）、液-液位移孔隙度测定法（LLDP）和ATR-FTIR。通过纯水通量（PWF）、水接触角、溶质截除率（腐植酸和BSA）和污垢分析来评估性能。伽马辐射的影响是明确的积极的，导致优越的过滤和抗污垢。研究证实，增加辐射剂量会导致显著的变化，包括水接触角的显著降低（亲水性增加），孔隙扩大后致密化，最关键的是，不可逆污垢（Fir）的显著减少。这些修饰产生了峰值性能，例如PES膜的HA去除率为95.3% %，突出了伽马辐照作为一种新型、环保的制造高性能、抗污染膜的方法。

{"title":"Gamma irradiation: An effective, eco-friendly method for manufacturing high-performance, fouling-resistant polymeric ultrafiltration membranes","authors":"Kashyap Tailor , Sapna Gawali , Manish Kumar , Manish Kumar Sinha , Surendra Sasikumar Jampa","doi":"10.1016/j.clwat.2025.100180","DOIUrl":"10.1016/j.clwat.2025.100180","url":null,"abstract":"<div><div>The development of membrane processes has accelerated across a variety of industries. Fouling is the most significant obstacle to the widespread use of polymeric membranes in pressure-driven membrane processes. Polymeric materials under the influence of gamma irradiation are subjected to chemical and structural changes across various dose ranges. This study investigates the influence of gamma radiation (0–70 kGy) on the performance of Polysulfone (PSF), Poly(vinylidene fluoride) (PVDF), and Polyether sulfone (PES) ultrafiltration membranes synthesized by the phase inversion method. Membrane characterization included Field Emission Scanning Electron Microscopy (FESEM), Liquid-liquid displacement porosimetry (LLDP), and ATR-FTIR. Performance was assessed via pure water flux (PWF), water contact angle, solute rejection (Humic Acid and BSA), and fouling analysis. The effect of gamma radiation was unequivocally positive, leading to superior filtration and fouling resistance. The study confirms that increasing radiation dosage resulted in significant changes, including a substantial decrease in water contact angle (increased hydrophilicity), pore enlargement followed by densification, and most critically, a significant reduction in irreversible fouling (Fir). These modifications yielded peak performance, such as 95.3 % HA rejection by the PES membrane, highlighting gamma irradiation as a novel, environmentally benign method for manufacturing high-performance, fouling-resistant membranes.</div></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"4 ","pages":"Article 100180"},"PeriodicalIF":0.0,"publicationDate":"2025-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578713","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

Experimental and techno-economic evaluation of a pyramid solar still across tilt angles and cover materials in a semi-arid climate 半干旱气候下斜角和覆盖材料金字塔式太阳静止器的实验和技术经济评价

Cleaner Water

Pub Date : 2025-11-15 DOI: 10.1016/j.clwat.2025.100181

Hashem Siami , Khaled Ahmadaali , Salman Zare , Sina Kosari , Anita Ghasemi

Solar stills are widely used for small-scale desalination, yet their output depends strongly on design and climate. This experimental study quantifies the effects of tilt angle and cover material on the productivity of square-pyramid solar stills under the semi-arid climate of Karaj, Iran. Six configurations were tested, G₃₀, G₂₀, G₁₀ (glass covers at 30°, 20°, 10°) and P₃₀, P₂₀, P₁₀ (plastic covers at the same angles). In parallel, cost-per-liter analysis was performed based on annualized cost and annual yield formulations, and a comprehensive water-quality assessment of the distillate was conducted. Across the monitoring period, glass covers consistently outperformed plastic covers. The 30° glass configuration (G₃₀) achieved the highest yield, reaching 1.264 L/m²/day on a representative clear-sky day and exceeding G₂₀, G₁₀, P₃₀, P₂₀, and P₁₀ by 19 %, 36 %, 40 %, 81 %, and 100 %, respectively. Water-quality results showed a ∼99 % reduction in salinity proxies relative to feedwater, with the distillate meeting potability targets for pH, TDS/EC, turbidity, and major ions. Economic evaluation indicated small differences among glass-covered units: G₃₀ yielded the lowest CPL at USD 0.0017 L⁻¹ , whereas P₂₀ had the highest at USD 0.008 L⁻¹ due to lower productivity. Overall, optimizing tilt angle and cover material substantially improves productivity, distillate quality, and cost-effectiveness of pyramid solar stills in semi-arid climates. Under Karaj’s conditions, G₃₀ offers the most favorable trade-off between productivity, water quality, and cost, supporting the broader viability of solar-driven still desalination for decentralized freshwater supply.

太阳能蒸馏器广泛用于小规模海水淡化，但其产量在很大程度上取决于设计和气候。本实验研究量化了在伊朗Karaj半干旱气候下，倾斜角度和覆盖材料对方形金字塔太阳能蒸馏器生产力的影响。测试了六种配置，G30、G20、G10（30°、20°、10°玻璃盖板）和P30、P20、P10（相同角度塑料盖板）。同时，根据年化成本和年产量公式进行了每升成本分析，并对馏分油进行了综合水质评价。在整个监测期间，玻璃盖的表现一直优于塑料盖。30°玻璃结构（G30）的产率最高，在典型的晴天达到1.264 L/m²/天，分别比G20、G10、P30、P20和P10高出19 %、36 %、40 %、81 %和100 %。水质结果显示，与给水相比，盐度指标降低了~ 99 %，馏分物达到了pH、TDS/EC、浊度和主要离子的饮用目标。经济评估表明，玻璃覆盖的单位之间的差异很小：G30的CPL最低，为0.0017美元 L⁻¹ ，而P20由于生产率较低，CPL最高，为0.008美元 L⁻¹ 。总体而言，优化倾斜角度和覆盖材料大大提高了半干旱气候下金字塔太阳能蒸馏器的生产力、蒸馏质量和成本效益。在Karaj的条件下，G30在生产力、水质和成本之间提供了最有利的权衡，支持太阳能驱动的蒸馏海水淡化的广泛可行性，以分散淡水供应。

{"title":"Experimental and techno-economic evaluation of a pyramid solar still across tilt angles and cover materials in a semi-arid climate","authors":"Hashem Siami , Khaled Ahmadaali , Salman Zare , Sina Kosari , Anita Ghasemi","doi":"10.1016/j.clwat.2025.100181","DOIUrl":"10.1016/j.clwat.2025.100181","url":null,"abstract":"<div><div>Solar stills are widely used for small-scale desalination, yet their output depends strongly on design and climate. This experimental study quantifies the effects of tilt angle and cover material on the productivity of square-pyramid solar stills under the semi-arid climate of Karaj, Iran. Six configurations were tested, G<sub>30</sub>, G<sub>20</sub>, G<sub>10</sub> (glass covers at 30°, 20°, 10°) and P<sub>30</sub>, P<sub>20</sub>, P<sub>10</sub> (plastic covers at the same angles). In parallel, cost-per-liter analysis was performed based on annualized cost and annual yield formulations, and a comprehensive water-quality assessment of the distillate was conducted. Across the monitoring period, glass covers consistently outperformed plastic covers. The 30° glass configuration (G<sub>30</sub>) achieved the highest yield, reaching 1.264 L/m²/day on a representative clear-sky day and exceeding G<sub>20</sub>, G<sub>10</sub>, P<sub>30</sub>, P<sub>20</sub>, and P<sub>10</sub> by 19 %, 36 %, 40 %, 81 %, and 100 %, respectively. Water-quality results showed a ∼99 % reduction in salinity proxies relative to feedwater, with the distillate meeting potability targets for pH, TDS/EC, turbidity, and major ions. Economic evaluation indicated small differences among glass-covered units: G<sub>30</sub> yielded the lowest CPL at USD 0.0017 L⁻¹ , whereas P<sub>20</sub> had the highest at USD 0.008 L⁻¹ due to lower productivity. Overall, optimizing tilt angle and cover material substantially improves productivity, distillate quality, and cost-effectiveness of pyramid solar stills in semi-arid climates. Under Karaj’s conditions, G<sub>30</sub> offers the most favorable trade-off between productivity, water quality, and cost, supporting the broader viability of solar-driven still desalination for decentralized freshwater supply.</div></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"4 ","pages":"Article 100181"},"PeriodicalIF":0.0,"publicationDate":"2025-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578697","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

Preliminary assessment of domestic well water quality and heavy metal contamination near Orathupalayam dam, India 印度Orathupalayam大坝附近生活井水水质及重金属污染初步评价

Cleaner Water

Pub Date : 2025-11-11 DOI: 10.1016/j.clwat.2025.100177

E. Mohana priya , E. Uma , Debasis Mitra , K.S. Tamilselvi

Industrial effluents and wastewater containing elevated levels of heavy metals pose significant threats to water quality and groundwater, potentially leading to severe health risks.The physicochemical parameters and concentrations of heavy metals, including Cadmium (Cd), Chromium (Cr), Lead (Pb), Nickel (Ni), and Zinc (Zn), along with pollution indices of well water,were analyzed using standard procedures. The water samples exhibited alkaline properties and high electrical conductivity withheavy metal concentrations of 0.47 ± 0.07 mg/Lfor Cd, 0.038 ± 0.01 mg/Lfor Pb, 0.10 ± 0.02 mg/Lfor Ni, and 0.58 ± 0.05 mg/Lfor Zn, while Cr was below detection limits. The average Geoaccumulation index values for Cd, Ni, and Pb were 2.657, 1.763, and 1.287, respectively, whereas the Heavy Metal Pollution index exceeded 100 for all samples. The contamination factor values followed the order of Cd > Ni > Pb > Zn, and all samples had a Pollution Load Index above 1. The results indicated that Cd is a moderately strong pollutant, whereas Ni and Pb are moderate pollutants. This study provides a crucial baseline for assessing the migration of heavy metals from well water to vegetables, and ultimately to humans.

含有高浓度重金属的工业废水和废水对水质和地下水构成重大威胁，可能导致严重的健康风险。采用标准程序分析了井水中镉（Cd）、铬（Cr）、铅（Pb）、镍（Ni）、锌（Zn）等重金属的理化参数、浓度及污染指标。水样本表现出碱性特性和高导电性withheavy金属浓度的0.47 ±0.07  毫克/ Lfor Cd, 0.038±0.01  毫克/ Lfor Pb, 0.10±0.02  毫克/ Lfor镍、和0.58 ±0.05  毫克/ Lfor锌、当Cr检测极限以下。Cd、Ni、Pb的累积指数平均值分别为2.657、1.763、1.287，重金属污染指数均超过100。污染因子值依次为Cd >； Ni >； Pb >； Zn，污染负荷指数均在1以上。结果表明，Cd为中强污染物，Ni和Pb为中强污染物。这项研究为评估重金属从井水到蔬菜，并最终到人类的迁移提供了一个重要的基线。

{"title":"Preliminary assessment of domestic well water quality and heavy metal contamination near Orathupalayam dam, India","authors":"E. Mohana priya , E. Uma , Debasis Mitra , K.S. Tamilselvi","doi":"10.1016/j.clwat.2025.100177","DOIUrl":"10.1016/j.clwat.2025.100177","url":null,"abstract":"<div><div>Industrial effluents and wastewater containing elevated levels of heavy metals pose significant threats to water quality and groundwater, potentially leading to severe health risks.The physicochemical parameters and concentrations of heavy metals, including Cadmium (Cd), Chromium (Cr), Lead (Pb), Nickel (Ni), and Zinc (Zn), along with pollution indices of well water,were analyzed using standard procedures. The water samples exhibited alkaline properties and high electrical conductivity withheavy metal concentrations of 0.47 ± 0.07 mg/Lfor Cd, 0.038 ± 0.01 mg/Lfor Pb, 0.10 ± 0.02 mg/Lfor Ni, and 0.58 ± 0.05 mg/Lfor Zn, while Cr was below detection limits. The average Geoaccumulation index values for Cd, Ni, and Pb were 2.657, 1.763, and 1.287, respectively, whereas the Heavy Metal Pollution index exceeded 100 for all samples. The contamination factor values followed the order of Cd > Ni > Pb > Zn, and all samples had a Pollution Load Index above 1. The results indicated that Cd is a moderately strong pollutant, whereas Ni and Pb are moderate pollutants. This study provides a crucial baseline for assessing the migration of heavy metals from well water to vegetables, and ultimately to humans.</div></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"4 ","pages":"Article 100177"},"PeriodicalIF":0.0,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527797","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

Green synthesis of silver nanoparticles from Centella asiatica and its application in photodegradation of methylene blue dye in paper industry effluent 积雪草绿色合成纳米银及其在造纸废水中亚甲基蓝染料降解中的应用

Cleaner Water

Pub Date : 2025-11-11 DOI: 10.1016/j.clwat.2025.100179

R. Arulnangai , R. Ganesamoorthy , Vajiha Banu Habeeb Mohamed , P.A. Vivekanand , P. Kavitha , P. Kavitha , K. Thirugnanasambandham

This study explores the green synthesis of silver nanoparticles (AgNPs) using Centella asiatica leaf extract and evaluates their structural, photocatalytic, and antimicrobial properties. FTIR analysis revealed the presence of various functional groups including hydroxyl, carboxyl, alkyl, amine, and aromatic rings, which originated from bioactive compounds such as tyrosine, ascorbic acid, stigmasterol, and kaempferol. These biomolecules served as reducing and capping agents in the synthesis of AgNPs. SEM analysis showed AgNPs with varied morphologies—tubular and cuboidal—ranging from 35 to 100 nm in size. Zeta potential analysis confirmed the colloidal stability of AgNPs with an average particle size of 132.8 nm. Photocatalytic degradation of methylene blue dye demonstrated a 90 % reduction under sunlight within 120 min, attributed primarily to localized surface plasmon resonance (LSPR)-induced electron transfer on the AgNP surface. Antibacterial assays revealed potent inhibition against Escherichia coli, Salmonella typhimurium, and Bacillus subtilis, with MIC values of 9.5, 6.5, and 6.25 µg/mL, respectively. The AgNPs outperformed ciprofloxacin in both inhibition zone diameter and MIC values. These findings highlight the eco-friendly synthesis of AgNPs using C. asiatica, showcasing their potential as efficient agents for environmental remediation and antimicrobial applications.

本研究探讨了利用积雪草叶提取物绿色合成纳米银（AgNPs）的方法，并对其结构、光催化和抗菌性能进行了评价。FTIR分析显示，该化合物中存在各种官能团，包括羟基、羧基、烷基、胺和芳香环，这些官能团来源于酪氨酸、抗坏血酸、豆甾醇和山奈酚等生物活性化合物。这些生物分子在AgNPs的合成中起还原和封盖作用。SEM分析显示AgNPs具有不同的形态-管状和立方状-大小从35到100 nm不等。Zeta电位分析证实了AgNPs的胶体稳定性，平均粒径为132.8 nm。光催化降解亚甲基蓝染料表明，在120 min的阳光下，降解率降低了90% %，这主要归因于AgNP表面的局部表面等离子体共振（LSPR）诱导的电子转移。对大肠杆菌、鼠伤寒沙门菌和枯草芽孢杆菌有较强的抑制作用，MIC值分别为9.5、6.5和6.25 µg/mL。AgNPs在抑菌圈直径和MIC值上均优于环丙沙星。这些发现强调了利用亚洲木臭生态友好地合成AgNPs，展示了它们作为环境修复和抗菌应用的有效剂的潜力。

{"title":"Green synthesis of silver nanoparticles from Centella asiatica and its application in photodegradation of methylene blue dye in paper industry effluent","authors":"R. Arulnangai , R. Ganesamoorthy , Vajiha Banu Habeeb Mohamed , P.A. Vivekanand , P. Kavitha , P. Kavitha , K. Thirugnanasambandham","doi":"10.1016/j.clwat.2025.100179","DOIUrl":"10.1016/j.clwat.2025.100179","url":null,"abstract":"<div><div>This study explores the green synthesis of silver nanoparticles (AgNPs) using <em>Centella asiatica</em> leaf extract and evaluates their structural, photocatalytic, and antimicrobial properties. FTIR analysis revealed the presence of various functional groups including hydroxyl, carboxyl, alkyl, amine, and aromatic rings, which originated from bioactive compounds such as tyrosine, ascorbic acid, stigmasterol, and kaempferol. These biomolecules served as reducing and capping agents in the synthesis of AgNPs. SEM analysis showed AgNPs with varied morphologies—tubular and cuboidal—ranging from 35 to 100 nm in size. Zeta potential analysis confirmed the colloidal stability of AgNPs with an average particle size of 132.8 nm. Photocatalytic degradation of methylene blue dye demonstrated a 90 % reduction under sunlight within 120 min, attributed primarily to localized surface plasmon resonance (LSPR)-induced electron transfer on the AgNP surface. Antibacterial assays revealed potent inhibition against <em>Escherichia coli</em>, <em>Salmonella typhimurium</em>, and <em>Bacillus subtilis</em>, with MIC values of 9.5, 6.5, and 6.25 µg/mL, respectively. The AgNPs outperformed ciprofloxacin in both inhibition zone diameter and MIC values. These findings highlight the eco-friendly synthesis of AgNPs using <em>C. asiatica</em>, showcasing their potential as efficient agents for environmental remediation and antimicrobial applications.</div></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"4 ","pages":"Article 100179"},"PeriodicalIF":0.0,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578702","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

Adsorption based techniques for simultaneous removal of multi-pollutant from wastewaters using silane modified fibres from sugarcane bagasse 利用甘蔗渣硅烷改性纤维同时去除废水中多种污染物的吸附技术

Cleaner Water

Pub Date : 2025-11-11 DOI: 10.1016/j.clwat.2025.100178

Joseph W. Sengasu , Kessy F. Kilulya , Joseph Y.N. Philip

Despite many reported purification methods, water pollution yet remains a serious problem. Most reported techniques are only effective at removing one pollutant at a time, making them inadequate for treating real-environment wastewater which typically contains multiple pollutants. This study aimed on the development of biosorbent materials capable of simultaneous removal of various pollutants from aqueous effluents. To achieve this, sugarcane bagasse fibres (SBF) were extracted and chemically modified through silanization using (3-aminopropyl)trimethoxysilane (APS) to enhance their adsorption properties. Characterization of silanized fibres (SBFAPS) have shown improved properties suitable for pollutants adsorption including potential functional groups, surface area and pore size. Adsorption performance in a fixed bed method at initial concentration of ≤ 5 ppm, pH of 6.5, flow rate of 2.5 mL/min and biosorbent mass of 1.0 g, has shown that SBFAPS had significantly higher multi-pollutant adsorption performance: 92.8 ± 3.8 % Pb(II), 83.8 ± 5.6 % Cr(III), 60.5 ± 3.2 % Cd(II), 45.9 ± 5.3 % Co(II), 79.1 ± 5.1 % crystal violet, 73.6 ± 4.7 % methyl orange and 63.4 ± 3.9 % ciprofloxacin, while in SBF: 73.9 ± 4.4 % Pb(II), 62.6 ± 4.8 % Cr(III), 33.0 ± 3.6 % Cd(II), 16.9 ± 4.2 % Co(II), 84.6 ± 5.9 % crystal violet, 60.1 ± 2.8 % methyl orange and 76.3 ± 5.2 % ciprofloxacin. The findings show that SBFAPS proves to be an effective biosorbent for removing multiple pollutants simultaneously from wastewater using a fixed bed adsorption technique, offering high efficiency and practical application potential with influence by pH, initial pollutant concentration, flow rate, and bed height.

尽管报道了许多净化方法，水污染仍然是一个严重的问题。大多数报道的技术一次只能有效地去除一种污染物，使得它们不足以处理通常含有多种污染物的真实环境废水。本研究旨在开发能够同时去除水中各种污染物的生物吸附材料。为此，对甘蔗渣纤维（SBF）进行提取，并采用（3-氨基丙基）三甲氧基硅烷（APS）进行硅烷化改性，以提高其吸附性能。硅化纤维（SBFAPS）的表征表明，它具有较好的吸附污染物的性能，包括潜在的官能团、表面积和孔径。在固定床吸附性能方法的初始浓度≤ 5 ppm, pH值为6.5,2.5 毫升/分钟的流量和biosorbent质量1.0 g,表明SBFAPS多元的污染明显高于吸附性能: 92.8±3.8  % Pb (II), 83.8 ±5.6  %铬(III), 60.5 ±3.2  % Cd (II), 45.9 ±5.3  %股份(II), 79.1 ±5.1  %结晶紫, 73.6±4.7  % 甲基橙和63.4±3.9  %环丙沙星,而在SBF: 73.9±4.4  % Pb (II), 62.6 ±4.8  %铬(III), 33.0 ±3.6  % Cd (II), 16.9 ±4.2  %股份(II), 84.6 ±5.9  %结晶紫, 60.1±2.8  % 甲基橙和76.3±5.2  %环丙沙星。研究结果表明，SBFAPS在pH、初始污染物浓度、流速和床层高度的影响下，是一种可以同时去除废水中多种污染物的有效生物吸附剂，具有较高的效率和实际应用潜力。

{"title":"Adsorption based techniques for simultaneous removal of multi-pollutant from wastewaters using silane modified fibres from sugarcane bagasse","authors":"Joseph W. Sengasu , Kessy F. Kilulya , Joseph Y.N. Philip","doi":"10.1016/j.clwat.2025.100178","DOIUrl":"10.1016/j.clwat.2025.100178","url":null,"abstract":"<div><div>Despite many reported purification methods, water pollution yet remains a serious problem. Most reported techniques are only effective at removing one pollutant at a time, making them inadequate for treating real-environment wastewater which typically contains multiple pollutants. This study aimed on the development of biosorbent materials capable of simultaneous removal of various pollutants from aqueous effluents. To achieve this, sugarcane bagasse fibres (SBF) were extracted and chemically modified through silanization using (3-aminopropyl)trimethoxysilane (APS) to enhance their adsorption properties. Characterization of silanized fibres (SBFAPS) have shown improved properties suitable for pollutants adsorption including potential functional groups, surface area and pore size. Adsorption performance in a fixed bed method at initial concentration of ≤ 5 ppm, pH of 6.5, flow rate of 2.5 mL/min and biosorbent mass of 1.0 g, has shown that SBFAPS had significantly higher multi-pollutant adsorption performance: 92.8 ± 3.8 % Pb(II), 83.8 ± 5.6 % Cr(III), 60.5 ± 3.2 % Cd(II), 45.9 ± 5.3 % Co(II), 79.1 ± 5.1 % crystal violet, 73.6 ± 4.7 % methyl orange and 63.4 ± 3.9 % ciprofloxacin, while in SBF: 73.9 ± 4.4 % Pb(II), 62.6 ± 4.8 % Cr(III), 33.0 ± 3.6 % Cd(II), 16.9 ± 4.2 % Co(II), 84.6 ± 5.9 % crystal violet, 60.1 ± 2.8 % methyl orange and 76.3 ± 5.2 % ciprofloxacin. The findings show that SBFAPS proves to be an effective biosorbent for removing multiple pollutants simultaneously from wastewater using a fixed bed adsorption technique, offering high efficiency and practical application potential with influence by pH, initial pollutant concentration, flow rate, and bed height.</div></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"4 ","pages":"Article 100178"},"PeriodicalIF":0.0,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527794","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

Hydrogeochemical assessment of Ramsar wetland sites in Gujarat, India using environmetric techniques 利用环境技术评价印度古吉拉特邦拉姆萨尔湿地的水文地球化学

Cleaner Water

Pub Date : 2025-11-11 DOI: 10.1016/j.clwat.2025.100174

Mukesh P. Chaudhari , Gh Ali , Mostafa M. Basheir , Ruchi Nair , Divya R. Mishra , Pranav S. Shrivastav

Ramsar wetlands are essential ecosystems that play a vital role in supporting biodiversity and maintaining water balance, making them ecologically and hydrologically significant. The study was conducted at four such sites in Gujarat — Khijadia, Nal Sarovar, Thol, and Wadhvana — to determine the variability in water quality, the predominant geochemical processes, and their potential for irrigation and domestic use. Major ions and physicochemical parameters in 12 surface water samples (3 samples from each wetland) were analyzed. Findings demonstrate slightly alkaline waters throughout the locations, with very high EC and TDS in Khijadia and Nal Sarovar due to evaporation and the intrusion of saline waters. In contrast, Thol and Wadhvana demonstrated relatively higher quality, but with locally elevated fluoride levels (>1.5 mg/L). The Thol and Wadhvana were rated good, and Khijadia and Nal Sarovar were rated poor by the Canadian WQI. High salinity hazards in Nal Sarovar and overall suitability in Thol and Wadhvana were demonstrated using irrigation indices (SAR, RSC, MAR, and KR). Piper, Durov, and Gibbs diagrams revealed four facies: Khijadia (Mg-Cl), Nal Sarovar (Na-Cl), Thol (Na-Cl), and Wadhvana (Ca-Mg-Cl). PCA identified three components that accounted for more than 90 % of the total variance, with strong correlations among Na⁺–Cl⁻–Mg²⁺ that are associated with salinity and rock-water interactions, suggesting these are the most significant controls. Elevated Na⁺, Cl⁻, and F⁻ suggest potential health risks for drinking use. In general, Khijadia and Nal Sarovar represent saline systems, whereas Thol and Wadhvana are freshwater wetlands influenced by local hydrology and lithology. These lessons offer guidelines for monitoring and managing wetlands in semi-arid areas to sustain ecological and human health.

拉姆萨尔湿地是重要的生态系统，在支持生物多样性和维持水平衡方面发挥着至关重要的作用，具有重要的生态和水文意义。这项研究是在古吉拉特邦的四个这样的地点——Khijadia、Nal Sarovar、Thol和Wadhvana——进行的，目的是确定水质的可变性、主要的地球化学过程及其在灌溉和家庭使用方面的潜力。对12个地表水样品（每个湿地3个样品）中的主要离子和理化参数进行了分析。调查结果表明，整个地点的水呈微碱性，由于蒸发和盐水的侵入，Khijadia和Nal Sarovar的EC和TDS非常高。相比之下，Thol和Wadhvana表现出相对较高的质量，但局部氟化物含量升高（>1.5 mg/L）。Thol和Wadhvana被评为好，Khijadia和Nal Sarovar被加拿大WQI评为差。利用灌溉指数（SAR、RSC、MAR和KR）论证了萨尔罗伐尔的高盐危害和索尔和瓦德瓦纳的总体适宜性。Piper、Durov和Gibbs图显示了四种相：Khijadia （Mg-Cl）、Nal Sarovar （Na-Cl）、Thol （Na-Cl）和Wadhvana （Ca-Mg-Cl）。PCA确定了三个成分占总方差的90% %以上，Na + -Cl -Mg 2 +与盐度和岩石-水相互作用有很强的相关性，这表明这些是最重要的控制因素。升高的Na⁺、Cl⁻和F⁻表明饮酒有潜在的健康风险。一般来说，Khijadia和Nal Sarovar代表盐碱化系统，而Thol和Wadhvana则是受当地水文和岩性影响的淡水湿地。这些经验教训为监测和管理半干旱地区的湿地以维持生态和人类健康提供了指导方针。

{"title":"Hydrogeochemical assessment of Ramsar wetland sites in Gujarat, India using environmetric techniques","authors":"Mukesh P. Chaudhari , Gh Ali , Mostafa M. Basheir , Ruchi Nair , Divya R. Mishra , Pranav S. Shrivastav","doi":"10.1016/j.clwat.2025.100174","DOIUrl":"10.1016/j.clwat.2025.100174","url":null,"abstract":"<div><div>Ramsar wetlands are essential ecosystems that play a vital role in supporting biodiversity and maintaining water balance, making them ecologically and hydrologically significant. The study was conducted at four such sites in Gujarat — Khijadia, Nal Sarovar, Thol, and Wadhvana — to determine the variability in water quality, the predominant geochemical processes, and their potential for irrigation and domestic use. Major ions and physicochemical parameters in 12 surface water samples (3 samples from each wetland) were analyzed. Findings demonstrate slightly alkaline waters throughout the locations, with very high EC and TDS in Khijadia and Nal Sarovar due to evaporation and the intrusion of saline waters. In contrast, Thol and Wadhvana demonstrated relatively higher quality, but with locally elevated fluoride levels (>1.5 mg/L). The Thol and Wadhvana were rated good, and Khijadia and Nal Sarovar were rated poor by the Canadian WQI. High salinity hazards in Nal Sarovar and overall suitability in Thol and Wadhvana were demonstrated using irrigation indices (SAR, RSC, MAR, and KR). Piper, Durov, and Gibbs diagrams revealed four facies: Khijadia (Mg-Cl), Nal Sarovar (Na-Cl), Thol (Na-Cl), and Wadhvana (Ca-Mg-Cl). PCA identified three components that accounted for more than 90 % of the total variance, with strong correlations among Na⁺–Cl⁻–Mg²⁺ that are associated with salinity and rock-water interactions, suggesting these are the most significant controls. Elevated Na⁺, Cl⁻, and F⁻ suggest potential health risks for drinking use. In general, Khijadia and Nal Sarovar represent saline systems, whereas Thol and Wadhvana are freshwater wetlands influenced by local hydrology and lithology. These lessons offer guidelines for monitoring and managing wetlands in semi-arid areas to sustain ecological and human health.</div></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"4 ","pages":"Article 100174"},"PeriodicalIF":0.0,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527795","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

Hydrogeochemical characterization and risk assessment of potentially toxic elements in water sources around Ibese quarry, southwestern Nigeria 尼日利亚西南部Ibese采石场附近水源中潜在有毒元素的水文地球化学特征和风险评估

Cleaner Water

Pub Date : 2025-11-06 DOI: 10.1016/j.clwat.2025.100176

T.A. Bolaji , T.M. Oluyemi , Y.O. Aladegbami

Mining contributes to escalating global concerns regarding water pollution and human health. This study investigates major ions and potentially toxic elements (PTEs) in water sources around a limestone quarry for irrigation suitability and public health. Samples were analyzed using standard methods and assessed with established pollution, ecological, and health risk models. pH values ranged from 2.61 to 8.16, indicating acidic to slightly alkaline waters. Calcium and HCO₃ were the dominant ions, with Mg-HCO₃ as the prevailing water type. Most parameters are within the WHO guidelines, except for pH, As, Cr, Ni, and Pb in some samples. Irrigation indices SAR (<10), MAR (4.37 – 25.89 %), KR (0.06 – 0.37 %), Na% (5.16 – 16.57), and PS (43.38 – 162.75) suggest overall suitability, though elevated potential salinity (PS up to 162.75) suggested possible long-term soil salinization. Pollution indices (CF, Igeo, PN) showed low to moderate contamination, and ecological risk (PERI = 39.45) was classified as low. However, human health risk assessment revealed ingestion as the dominant exposure pathway, with As and Pb posing carcinogenic and neurotoxic risks, and Cr and Ni showing genotoxic and reproductive toxicity potential. Treatment is recommended before domestic or industrial use. The findings highlight the need for continuous monitoring, quarry waste water management, and community health surveillance. Integrating hydrochemical data with adaptive water quality governance supports sustainable resource use and aligns with SDG 6 (Clean Water) and SDG 15 (Life on Land).

采矿加剧了全球对水污染和人类健康的关注。本研究调查了石灰石采石场附近水源中的主要离子和潜在有毒元素（pte），用于灌溉适宜性和公众健康。使用标准方法对样本进行分析，并使用已建立的污染、生态和健康风险模型进行评估。pH值在2.61 ~ 8.16之间，为酸性到微碱性。钙离子和HCO3为主要离子，Mg-HCO3为主要水型。除了一些样品中的pH、As、Cr、Ni和Pb外，大多数参数都在世卫组织指南范围内。灌溉指标SAR （<10）、MAR（4.37 - 25.89 %）、KR（0.06 - 0.37 %）、Na%（5.16 - 16.57）和PS（43.38 - 162.75）表明总体适宜，但潜在盐度升高（PS高达162.75）表明土壤可能长期盐渍化。污染指数（CF、Igeo、PN）为低至中度污染，生态风险（PERI = 39.45）为低。然而，人体健康风险评估显示，摄入是主要的暴露途径，砷和铅具有致癌和神经毒性风险，铬和镍具有遗传毒性和生殖毒性潜力。建议在家用或工业使用前进行处理。研究结果强调了持续监测、采石场废水管理和社区卫生监测的必要性。将水化学数据与适应性水质治理相结合，支持可持续资源利用，并符合可持续发展目标6（清洁水）和可持续发展目标15（陆地生命）。

{"title":"Hydrogeochemical characterization and risk assessment of potentially toxic elements in water sources around Ibese quarry, southwestern Nigeria","authors":"T.A. Bolaji , T.M. Oluyemi , Y.O. Aladegbami","doi":"10.1016/j.clwat.2025.100176","DOIUrl":"10.1016/j.clwat.2025.100176","url":null,"abstract":"<div><div>Mining contributes to escalating global concerns regarding water pollution and human health. This study investigates major ions and potentially toxic elements (PTEs) in water sources around a limestone quarry for irrigation suitability and public health. Samples were analyzed using standard methods and assessed with established pollution, ecological, and health risk models. pH values ranged from 2.61 to 8.16, indicating acidic to slightly alkaline waters. Calcium and HCO<sub>3</sub> were the dominant ions, with Mg-HCO<sub>3</sub> as the prevailing water type. Most parameters are within the WHO guidelines, except for pH, As, Cr, Ni, and Pb in some samples. Irrigation indices SAR (<10), MAR (4.37 – 25.89 %), KR (0.06 – 0.37 %), Na% (5.16 – 16.57), and PS (43.38 – 162.75) suggest overall suitability, though elevated potential salinity (PS up to 162.75) suggested possible long-term soil salinization. Pollution indices (CF, Igeo, PN) showed low to moderate contamination, and ecological risk (PERI = 39.45) was classified as low. However, human health risk assessment revealed ingestion as the dominant exposure pathway, with As and Pb posing carcinogenic and neurotoxic risks, and Cr and Ni showing genotoxic and reproductive toxicity potential. Treatment is recommended before domestic or industrial use. The findings highlight the need for continuous monitoring, quarry waste water management, and community health surveillance. Integrating hydrochemical data with adaptive water quality governance supports sustainable resource use and aligns with SDG 6 (Clean Water) and SDG 15 (Life on Land).</div></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"4 ","pages":"Article 100176"},"PeriodicalIF":0.0,"publicationDate":"2025-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578711","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

Hydrogeomorphic analysis and assessment of land use-land cover changes pattern of Imphal River basin, Manipur (India) 印度曼尼普尔邦英帕尔河流域水文地貌分析及土地利用/覆被变化格局评价

Cleaner Water

Pub Date : 2025-11-06 DOI: 10.1016/j.clwat.2025.100175

Samananda Keisham, Mohd Kamaluddin Sheikh, Wazir Alam

River basin management involves a comprehensive appraisal of the dynamics of hydrogeomorphic features of the catchment that significantly influence rainfall-runoff patterns, erosion, and sediment transport potential, which influences the overall ecohydrological health of any river basin. The current study uses geospatial analysis techniques to highlight the hydromorphometric characteristics and temporal land/landcover change patterns of the Imphal River basin in order to highlight water resources management priorities. The study reveals that the Imphal River basin is moderately sloped with sparse vegetation and a moderate infiltration capacity of soil. The low bifurcation ratio of the 1^st and 2^nd ordered streams signifies susceptibility to moderate infiltration, leading to more flooding vulnerabilities. Moreover, higher slopes in drainage systems facilitate higher runoff rate, increased soil erosion and sediment transport and carrying potential. The spatio-temporal analysis of landuse patterns highlights a significant decrease in light vegetation (forest) cover (110.63–17.16 %), while there is a significant increase in the dense vegetation (2.50–2.79 %), built-up area (2.35–4.79 %), agricultural (3.49–7.40 %), and barren lands (4.82–5.63 %) from 2000 to 2023. The hypsometric integral of the river basin suggests that the catchment is in the equilibrium stage, with a good relationship between stream order, length, and number. Thus, the present study integrates hydromorphometric analysis with spatiotemporal landuse/landcover change patterns to understand the overall impacts on hydrological processes of the catchment area. Further, the study also highlights the need for holistic watershed management initiatives for effective planning and adaptation plans for hydroclimate-induced vulnerabilities in the region.

流域管理涉及对流域水文地貌特征动态的综合评估，这些特征显著影响降雨径流模式、侵蚀和沉积物输送潜力，从而影响任何流域的整体生态水文健康。本研究利用地理空间分析技术，突出了英帕尔河流域的水文形态特征和土地/土地覆盖的时间变化模式，以突出水资源管理的重点。研究表明，英帕尔河流域为中等坡度，植被稀疏，土壤入渗能力中等。一阶和二阶流的分岔率较低，表明其易受中等入渗影响，因而具有较高的洪水脆弱性。此外，排水系统的坡度越高，径流量越大，土壤侵蚀和泥沙运输和携带潜力就越大。土地利用格局的时空分析表明，2000 - 2023年，轻植被（森林）覆盖显著减少（110.63 ~ 17.16 %），而茂密植被（2.50 ~ 2.79 %）、建成区（2.35 ~ 4.79 %）、农业用地（3.49 ~ 7.40 %）和荒地（4.82 ~ 5.63 %）显著增加。流域的拟合积分表明，流域处于平衡阶段，河流序、长度和数量之间具有良好的关系。因此，本研究将水文形态分析与时空土地利用/土地覆盖变化模式相结合，以了解流域水文过程的整体影响。此外，该研究还强调需要采取全面的流域管理举措，以有效规划和适应该地区水文气候引起的脆弱性计划。

{"title":"Hydrogeomorphic analysis and assessment of land use-land cover changes pattern of Imphal River basin, Manipur (India)","authors":"Samananda Keisham, Mohd Kamaluddin Sheikh, Wazir Alam","doi":"10.1016/j.clwat.2025.100175","DOIUrl":"10.1016/j.clwat.2025.100175","url":null,"abstract":"<div><div>River basin management involves a comprehensive appraisal of the dynamics of hydrogeomorphic features of the catchment that significantly influence rainfall-runoff patterns, erosion, and sediment transport potential, which influences the overall ecohydrological health of any river basin. The current study uses geospatial analysis techniques to highlight the hydromorphometric characteristics and temporal land/landcover change patterns of the Imphal River basin in order to highlight water resources management priorities. The study reveals that the Imphal River basin is moderately sloped with sparse vegetation and a moderate infiltration capacity of soil. The low bifurcation ratio of the 1<sup>st</sup> and 2<sup>nd</sup> ordered streams signifies susceptibility to moderate infiltration, leading to more flooding vulnerabilities. Moreover, higher slopes in drainage systems facilitate higher runoff rate, increased soil erosion and sediment transport and carrying potential. The spatio-temporal analysis of landuse patterns highlights a significant decrease in light vegetation (forest) cover (110.63–17.16 %), while there is a significant increase in the dense vegetation (2.50–2.79 %), built-up area (2.35–4.79 %), agricultural (3.49–7.40 %), and barren lands (4.82–5.63 %) from 2000 to 2023. The hypsometric integral of the river basin suggests that the catchment is in the equilibrium stage, with a good relationship between stream order, length, and number. Thus, the present study integrates hydromorphometric analysis with spatiotemporal landuse/landcover change patterns to understand the overall impacts on hydrological processes of the catchment area. Further, the study also highlights the need for holistic watershed management initiatives for effective planning and adaptation plans for hydroclimate-induced vulnerabilities in the region.</div></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"4 ","pages":"Article 100175"},"PeriodicalIF":0.0,"publicationDate":"2025-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527796","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