Water science and engineering最新文献_第2页

Evaluation of scale effects in physical modeling of combined ogee and sharp-crested weir flow using a 3D CFD model 用三维CFD模型评价组合斜顶堰流物理建模中的尺度效应

IF 3.7

Water science and engineering Pub Date : 2025-06-01 DOI: 10.1016/j.wse.2024.11.002

James Zulfan , Bobby Minola Ginting , Ravi Anthony Tartandyo

{"title":"Evaluation of scale effects in physical modeling of combined ogee and sharp-crested weir flow using a 3D CFD model","authors":"James Zulfan , Bobby Minola Ginting , Ravi Anthony Tartandyo","doi":"10.1016/j.wse.2024.11.002","DOIUrl":"10.1016/j.wse.2024.11.002","url":null,"abstract":"<div><div>Research on scale effects on flows over weirs has been conducted on a limited basis, primarily focusing on flows upstream of a single-type weir, such as ogee, broad-crested, and sharp-crested (linear and non-linear) weirs. However, the scale effects downstream of these single-type weirs have not been thoroughly investigated. This study examined the scale effects on flows over a combined weir system consisting of an ogee weir and a sharp-crested weir, both upstream and downstream, utilizing physical modeling at a 1:33.33 scale based on Froude similarity and three-dimensional (3D) computational fluid dynamics (CFD) modeling. The sharp-crested weir in this study was represented by two sluice gates that remain closed and submerged during flood events. The experimental data confirmed that the equivalent discharge coefficients of the combined weir system behaved similarly to those of a sharp-crested weir across various <em>H</em>/<em>P</em> (where <em>H</em> is the total head, and <em>P</em> is the weir height) values. However, scale effects on the discharge rating curve due to surface tension and viscosity could only be minimized when <em>H</em>/<em>P ></em> 0.4, <em>Re</em> > 26 959, and <em>We</em> > 240 (where <em>Re</em> and <em>We</em> are the Reynolds and Weber numbers, respectively), provided that the water depth exceeded 0.042 m above the crest. Additionally, <em>Re</em> greater than 4 × 10<sup>4</sup> was necessary to minimize scale effects caused by viscosity in flows in the spillway channel and stilling basin (with baffle blocks). The limiting criteria aligned closely with existing literature. This study offers valuable insights for practical applications in hydraulic engineering in the future.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 2","pages":"Pages 225-235"},"PeriodicalIF":3.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178474","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

Degradation of tetracycline in water using hydrogen peroxide activated by soybean residue-derived magnetic biochar 大豆渣磁性生物炭活化过氧化氢降解水中四环素的研究

IF 3.7

Water science and engineering Pub Date : 2025-06-01 DOI: 10.1016/j.wse.2024.10.001

Van-Truc Nguyen , Nguyen Duy Dat , Thi-Giang-Huong Duong , Viet-Cuong Dinh , Thi-Dieu-Hien Vo

{"title":"Degradation of tetracycline in water using hydrogen peroxide activated by soybean residue-derived magnetic biochar","authors":"Van-Truc Nguyen , Nguyen Duy Dat , Thi-Giang-Huong Duong , Viet-Cuong Dinh , Thi-Dieu-Hien Vo","doi":"10.1016/j.wse.2024.10.001","DOIUrl":"10.1016/j.wse.2024.10.001","url":null,"abstract":"<div><div>Tetracyclines (TCs) are the second most commonly used antibiotics worldwide, utilized in medical treatments and animal husbandry. Although effective against various infectious diseases, TC residues persist in the environment and contribute to the emergence of antibiotic-resistant pathogens, posing significant risks to human health. This study employed the heterogeneous Fenton process to degrade TC using soybean residue-derived magnetic biochar (Fe-SoyB) as the catalyst. The Fe-SoyB sample was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and superconducting quantum interference device (SQUID) techniques. The effects of key parameters, including pH, H<sub>2</sub>O<sub>2</sub> concentration, catalyst dosage, and initial TC concentration, on TC degradation were investigated. The results indicated that the TC removal efficiency decreased with increasing initial TC concentration, while it was improved with higher H<sub>2</sub>O<sub>2</sub> concentrations and greater catalyst dosages. The optimal conditions for the Fenton-like process were determined: a pH of 3, a H<sub>2</sub>O<sub>2</sub> concentration of 245 mmol/L, an initial TC concentration of 800 mg/L, and a catalyst dosage of 0.75 g/L, achieving a removal efficiency of 90.0% after 150 min. Additionally, the TC removal efficiency of the Fe-SoyB system varied significantly across different water matrices, with 87.1% for deionized water, 78.5% for tap water, and 72.5% for river water. The catalyst demonstrated notable stability, maintaining a TC removal efficiency of 79.7% after three cycles of use. Overall, Fe-SoyB shows promise as a cost-effective catalyst for the elimination of organic pollutants in aqueous solutions.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 2","pages":"Pages 129-140"},"PeriodicalIF":3.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178395","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

Energy flow rate equation for river networks 河网的能量流量方程

IF 3.7

Water science and engineering Pub Date : 2025-06-01 DOI: 10.1016/j.wse.2025.04.003

Sai-yu Yuan , Jia-wei Lin , Hong-wu Tang

引用次数: 0

Thanks to our academic editors and peer reviewers 感谢我们的学术编辑和同行评审

IF 3.7

Water science and engineering Pub Date : 2025-02-16 DOI: 10.1016/S1674-2370(25)00012-2

引用次数: 0

A missing data processing method for dam deformation monitoring data using spatiotemporal clustering and support vector machine model 利用时空聚类和支持向量机模型的大坝变形监测数据缺失数据处理方法

IF 3.7

Water science and engineering Pub Date : 2024-08-30 DOI: 10.1016/j.wse.2024.08.003

Yan-tao Zhu , Chong-shi Gu , Mihai A. Diaconeasa

引用次数: 0

Hydraulic characteristics of a large rotation-angle baffle-drop shaft through synergetic discharge from dry and wet sides 大转角折流轴干湿侧协同泄油的水力特性

IF 3.7

Water science and engineering Pub Date : 2024-08-23 DOI: 10.1016/j.wse.2024.08.002

Pei-de Liang , Jun Chen , Teng Wu , Jing Yan

{"title":"Hydraulic characteristics of a large rotation-angle baffle-drop shaft through synergetic discharge from dry and wet sides","authors":"Pei-de Liang , Jun Chen , Teng Wu , Jing Yan","doi":"10.1016/j.wse.2024.08.002","DOIUrl":"10.1016/j.wse.2024.08.002","url":null,"abstract":"<div><div>To enhance the operational capacity and space utilization of baffle-drop shafts, this study improved the traditional baffle-drop shaft by expanding the wet-side space, incorporating large rotation-angle baffles, and installing overflow holes in the dividing wall. A three-dimensional turbulent model was developed using ANSYS Fluent to simulate the hydraulic characteristics of both traditional and new baffle-drop shafts across various flow rates. The simulation results demonstrated that the new shaft design allowed for discharge from both the wet and dry sides, significantly improving operational capacity, with the dry side capable of handling 40% of the inlet flow. Compared to the traditional shaft, the new design reduced shaft wall pressures and decreased the mean and standard deviation of pressure on typical baffles by 21% and 63%, respectively, therefore enhancing structural safety. Additionally, the new shaft achieved a 2%–12% higher energy dissipation rate than the traditional shaft across different flow rates. This study offers valuable insights for the design and optimization of drop shafts in deep tunnel drainage systems.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 115-124"},"PeriodicalIF":3.7,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419758","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

Comprehensive analysis of characteristics of dry–wet events and their transitions in Uttar Pradesh, India 印度北方邦干湿事件及其转变特征的综合分析

IF 3.7

Water science and engineering Pub Date : 2024-06-26 DOI: 10.1016/j.wse.2024.06.003

Shivani Gond , Ashish Kumar Agnihotri , Nitesh Gupta , P.K.S. Dikshit

{"title":"Comprehensive analysis of characteristics of dry–wet events and their transitions in Uttar Pradesh, India","authors":"Shivani Gond , Ashish Kumar Agnihotri , Nitesh Gupta , P.K.S. Dikshit","doi":"10.1016/j.wse.2024.06.003","DOIUrl":"10.1016/j.wse.2024.06.003","url":null,"abstract":"<div><div>Understanding the occurrence and characteristics of dry and wet events is crucial for effective disaster prevention, resource management, and risk reduction in vulnerable regions. This study analyzed the spatiotemporal patterns of dry–wet events and their transition characteristics in Uttar Pradesh, India. The standardized precipitation evapotranspiration index (SPEI) at a monthly timescale was utilized to identify hotspot regions vulnerable to concurrent and frequent dry and wet events and their transitions. The severity, duration, and intensity of dry and wet events were characterized with the run theory over SPEI time series data from 18 synoptic stations in Uttar Pradesh over 48 years (1971–2018), sourced from the Indian Institute of Tropical Meteorology and the India Meteorological Department. Multiple assessment methods were utilized to examine the interaction of these extreme events, considering characteristics such as wet–dry ratio, average transition time, and rapid transition times from wet to dry events and from dry to wet events. Average wet durations ranged from 1.27 to 1.58 months, and average dry durations ranged from 1.29 to 1.82 months. Rapid transition times from dry to wet events ranged from 2.5 to 4.1 months, and those for wet-to-dry events ranged from 2.1 to 5.3 months. The eastern region experienced a significantly high number of dry events, while the western and Bundelkhand regions experienced more intense dry events. In contrast, the eastern region had intense wet events. This research on the occurrence of dry–wet events and their transitions can provide valuable insights for government decision-making and disaster prevention and reduction efforts.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 59-68"},"PeriodicalIF":3.7,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419795","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

Perspectives on risk analysis and control for real-time operation of flood control systems 防洪系统实时运行的风险分析与控制视角

IF 3.7

Water science and engineering Pub Date : 2024-06-26 DOI: 10.1016/j.wse.2024.06.002

Juan Chen , Lu Zhang , Guo-zhi Li , Ping-an Zhong

引用次数: 0

Trichoderma aureoviride hyphal pellets embedded in corncob-sodium alginate matrix for efficient uranium(VI) biosorption from aqueous solutions 包埋在玉米芯-海藻酸钠基质中的金黄色毛霉菌菌丝颗粒从水溶液中高效生物吸附铀(VI)

IF 3.7

Water science and engineering Pub Date : 2024-06-08 DOI: 10.1016/j.wse.2024.06.001

Min Li , Bo Liang , Jie-ming Liu , Jin Zhang , Bin Wang , Jie Shang

{"title":"Trichoderma aureoviride hyphal pellets embedded in corncob-sodium alginate matrix for efficient uranium(VI) biosorption from aqueous solutions","authors":"Min Li , Bo Liang , Jie-ming Liu , Jin Zhang , Bin Wang , Jie Shang","doi":"10.1016/j.wse.2024.06.001","DOIUrl":"10.1016/j.wse.2024.06.001","url":null,"abstract":"<div><div>The discharge of effluents containing uranium (U) ions into aquatic ecosystems poses significant risks to both human health and marine organisms. This study investigated the biosorption of U(VI) ions from aqueous solutions using corncob-sodium alginate (SA)-immobilized <em>Trichoderma aureoviride</em> hyphal pellets. Experimental parameters, including initial solution pH, initial concentration, temperature, and contact time, were systematically examined to understand their influence on the bioadsorption process. Results showed that the corncob-SA-immobilized <em>T. aureoviride</em> hyphal pellets exhibited maximum uranium biosorption capacity at an initial pH of 6.23 and a contact time of 12 h. The equilibrium data aligned with the Langmuir isotherm model, with a maximum biosorption capacity of 105.60 mg/g at 301 K. Moreover, biosorption kinetics followed the pseudo-second-order kinetic model. In terms of thermodynamic parameters, the changes in Gibbs-free energy (Δ<em>G</em>°) were determined to be −4.29 kJ/mol at 301 K, the changes in enthalpy (Δ<em>H</em>°) were 46.88 kJ/mol, and the changes in entropy (Δ<em>S</em>°) was 164.98 J/(mol·K). Notably, the adsorbed U(VI) could be efficiently desorbed using Na<sub>2</sub>CO<sub>3</sub>, with a maximum readsorption efficiency of 53.6%. Scanning electron microscopic (SEM) analysis revealed U(VI) ion binding onto the hyphal pellet surface. This study underscores the efficacy of corncob-SA-immobilized <em>T. aureoviride</em> hyphal pellets as a cost-effective and environmentally favorable biosorbent material for removing U(VI) from aquatic ecosystems.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 51-58"},"PeriodicalIF":3.7,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141401284","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

Microbial community diversity during algal inhibition using slow-release microcapsules of tea polyphenols 使用茶多酚缓释微胶囊抑制藻类生长过程中的微生物群落多样性

IF 4

Water science and engineering Pub Date : 2024-05-23 DOI: 10.1016/j.wse.2024.05.004

Li-xiao Ni , Yuan-yi Fang , Cun-hao Du , Jia-jia Wang , Cheng-jie Zhu , Chu Xu , Shi-yin Li , Jian Xu , Xu-qing Chen , Hua Su

{"title":"Microbial community diversity during algal inhibition using slow-release microcapsules of tea polyphenols","authors":"Li-xiao Ni , Yuan-yi Fang , Cun-hao Du , Jia-jia Wang , Cheng-jie Zhu , Chu Xu , Shi-yin Li , Jian Xu , Xu-qing Chen , Hua Su","doi":"10.1016/j.wse.2024.05.004","DOIUrl":"10.1016/j.wse.2024.05.004","url":null,"abstract":"<div><p>Harmful algal blooms (HABs) resulting from eutrophication pose a major threat to ecosystems and human health, necessitating effective control measures. Allelochemicals have shown their importance in slowing down algal proliferation due to their proven efficacy and low ecological impacts. In this study, allelopathy tea polyphenols (TPs) and β-cyclodextrin were combined to prepare slow-release algicidal microcapsules, and the diversity of microbial community in the algal inhibition process was analyzed. Results showed that TP slow-release microcapsules had strong algicidal activity. When against <em>Microcystis aeruginosa</em> within 20 d, their constant inhibitory rate was up to 99% compared to the control group. Microbial diversity decreased with an increase in algae density, and the species richness and diversity of algae increased under the stress of TP slow-release microcapsules. The redundancy analysis showed that the environmental factors with impacts on the abundance and diversity of bacterial communities in descending order were dissolved oxygen, pH, and temperature. This study provides a theoretical basis for the application of TP slow-release microcapsules to actual water.</p></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"17 3","pages":"Pages 266-273"},"PeriodicalIF":4.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1674237024000528/pdfft?md5=10c451ad88403e633f575865288f70e8&pid=1-s2.0-S1674237024000528-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141133382","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