Water science and engineering最新文献

{"title":"Superior decomposition of xenobiotic RB5 dye using three-dimensional electrochemical treatment: Response surface methodology modelling, artificial intelligence, and machine learning-based optimisation approaches","authors":"Voravich Ganthavee,&nbsp;Antoine P. Trzcinski","doi":"10.1016/j.wse.2024.05.003","DOIUrl":"10.1016/j.wse.2024.05.003","url":null,"abstract":"<div><div>The highly efficient electrochemical treatment technology for dye-polluted wastewater is one of hot research topics in industrial wastewater treatment. This study reported a three-dimensional electrochemical treatment process integrating graphite intercalation compound (GIC) adsorption, direct anodic oxidation, and ·OH oxidation for decolourising Reactive Black 5 (RB5) from aqueous solutions. The electrochemical process was optimised using the novel progressive central composite design–response surface methodology (CCD–NPRSM), hybrid artificial neural network–extreme gradient boosting (hybrid ANN–XGBoost), and classification and regression trees (CART). CCD–NPRSM and hybrid ANN–XGBoost were employed to minimise errors in evaluating the electrochemical process involving three manipulated operational parameters: current density, electrolysis (treatment) time, and initial dye concentration. The optimised decolourisation efficiencies were 99.30%, 96.63%, and 99.14% for CCD–NPRSM, hybrid ANN–XGBoost, and CART, respectively, compared to the 98.46% RB5 removal rate observed experimentally under optimum conditions: approximately 20 mA/cm² of current density, 20 min of electrolysis time, and 65 mg/L of RB5. The optimised mineralisation efficiencies ranged between 89% and 92% for different models based on total organic carbon (TOC). Experimental studies confirmed that the predictive efficiency of optimised models ranked in the descending order of hybrid ANN–XGBoost, CCD–NPRSM, and CART. Model validation using analysis of variance (ANOVA) revealed that hybrid ANN–XGBoost had a mean squared error (MSE) and a coefficient of determination (<em>R</em>²) of approximately 0.014 and 0.998, respectively, for the RB5 removal efficiency, outperforming CCD–NPRSM with MSE and <em>R</em>² of 0.518 and 0.998, respectively. Overall, the hybrid ANN–XGBoost approach is the most feasible technique for assessing the electrochemical treatment efficiency in RB5 dye wastewater decolourisation.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 1-10"},"PeriodicalIF":3.7,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141136406","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}

{"title":"Biodegradation of cresyl diphenyl phosphate in anaerobic activated sludge: Degradation characteristics, microbial community succession, and toxicity assessment","authors":"Chen-xue Jiang ,&nbsp;Ying Li ,&nbsp;Chi Yao ,&nbsp;Jing Li ,&nbsp;Ke Jing ,&nbsp;Sui-sui Zhang ,&nbsp;Cheng Liu ,&nbsp;Lian-fang Zhao","doi":"10.1016/j.wse.2024.05.002","DOIUrl":"10.1016/j.wse.2024.05.002","url":null,"abstract":"<div><div>Cresyl diphenyl phosphate (CDP), an emerging aryl organophosphate ester (OPE), exhibits potential toxic effects and is frequently found in diverse environmental media, thereby raising concerns about environmental pollution. Biodegradation demonstrates substantial potential for CDP removal from the environment. This study investigated the biodegradation mechanisms of CDP using anaerobic activated sludge (AnAS). The biodegradation of 1-mg/L CDP followed a first-order kinetic model with a degradation kinetic constant of 0.943 d⁻¹, and the addition of different electron acceptors affected the degradation rate. High-resolution mass spectrometry identified seven transformation products (TPs) of CDP. The pathways of CDP degradation in anaerobic conditions were proposed, with carboxylation products being the most dominant intermediate products. The structure of the anaerobic microbial community at different degradation time points in CDP-amended microcosms was examined. The linear discriminant analysis (LDA) of effect size (LEfSe) potentially underscored the pivotal role of <em>Methyloversatilis</em> in CDP biodegradation. Zebrafish embryotoxicity experiments revealed both lethal and morphogenetic impacts of CDP on zebrafish embryos. The survival rate, hatching rate, and body length indicators of zebrafish embryos underscored the detoxification of CDP and its resultant intermediates by AnAS. This study offers new insights into the fate and biodegradation mechanisms of CDP in wastewater treatment plants.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 41-50"},"PeriodicalIF":3.7,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141047949","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}

{"title":"Influence of breach parameter models on hazard classification of off-stream reservoirs","authors":"Nathalia Silva-Cancino ,&nbsp;Fernando Salazar ,&nbsp;Ernest Bladé ,&nbsp;Marcos Sanz-Ramos","doi":"10.1016/j.wse.2024.05.001","DOIUrl":"10.1016/j.wse.2024.05.001","url":null,"abstract":"<div><div>The classification of dams or off-stream reservoirs concerning potential hazards in the event of failure often involves the use of two-dimensional hydraulic models for computing floodwave effects. These models necessitate defining breach geometry and formation time, for which various parametric models have been proposed. These models yield different values for average breach width, time of failure, and consequently, peak flows, as demonstrated by several researchers. This study analyzed the effect of selecting a breach parametric model on the hydraulic variables, potential damages, and hazard classification of structures. Three common parametric models were compared using a set of synthetic cases and a real off-stream reservoir. Results indicated significant effects of model choice. Material erodibility exerted a significant impact, surpassing that of failure mode. Other factors, such as the Manning coefficient, significantly affected the results. Utilizing an inadequate model or lacking information on dike material can lead to overly conservative or underestimated outcomes, thereby affecting hazard classification.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 102-114"},"PeriodicalIF":3.7,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141047156","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}

{"title":"Hydrological responses to permafrost degradation on Tibetan Plateau under changing climate","authors":"Xue-gao Chen ,&nbsp;Zhong-bo Yu ,&nbsp;Hui Lin ,&nbsp;Tong-qing Shen ,&nbsp;Peng Jiang","doi":"10.1016/j.wse.2024.04.002","DOIUrl":"10.1016/j.wse.2024.04.002","url":null,"abstract":"<div><p>The Tibetan Plateau (TP) has undergone significant warming and humidification in recent years, resulting in rapid permafrost degradation and spatiotemporal variations in hydrological processes, such as subsurface water transport, hydrothermal conversion, and runoff generation. Understanding the mechanisms of hydrological processes in permafrost areas under changing climate is crucial for accurately evaluating hydrological responses on the TP. This study comprehensively discusses the permafrost hydrological processes of the TP under changing climate. Topics include climate conditions and permafrost states, subsurface water transport under freeze–thaw conditions, development of thermokarst lakes and hydrothermal processes, and runoff response during permafrost degradation. This study offers a comprehensive understanding of permafrost changes and their hydrological responses, contributing significantly to water security and sustainable development on the TP.</p></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"17 3","pages":"Pages 209-216"},"PeriodicalIF":4.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1674237024000486/pdfft?md5=694ccebde1609b67f2443ffe39038146&pid=1-s2.0-S1674237024000486-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140779406","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}

{"title":"Effective removal of fluoride and arsenic from groundwater via integrated biosorption and membrane ultrafiltration","authors":"Bukke Vani ,&nbsp;Mannem Hymavathi ,&nbsp;Swayampakula Kalyani ,&nbsp;Nivedita Sahu ,&nbsp;Sundergopal Sridhar","doi":"10.1016/j.wse.2024.04.001","DOIUrl":"10.1016/j.wse.2024.04.001","url":null,"abstract":"<div><div>Fluoride (F⁻) and arsenic, present as As(III) and As(V), are widespread toxins in groundwater across India, as well as in other countries or regions like Pakistan, China, Kenya, Africa, Thailand, and Latin America. Their presence in water resources poses significant environmental and health risks, including fluorosis and arsenicosis. To address this issue, this study developed an integrated process combining biosorbents and ultrafiltration (UF) for the removal of F⁻, As, and turbidity from contaminated water. Laboratory-scale adsorption experiments were conducted using low-cost biosorbents with different biosorbent dosages, specifically <em>Moringa oleifera</em> seed powder (MSP) and sorghum bicolor husk (SBH), along with sand as a binding medium. F⁻ and As concentrations ranging from 2 to 10 mg/L and 3 to 12 mg/L, respectively, were investigated. Biosorbents and their different combinations were tested to determine their efficacy in removing dissolved F⁻ and As. The results showed that a blend of 10-g/L MSP with SBH achieved the highest F⁻ (97.20%) and As (78.63%) removal efficiencies. Subsequent treatment with a UF membrane effectively reduced turbidity and colloidal impurities in the treated water, achieving a maximum turbidity removal efficiency of 95.40%. Equilibrium kinetic and isotherm models were employed to analyze the experimental data, demonstrating good fit. Preliminary cost analysis indicated that the hybrid technology is economically viable and suitable for the separation of hazardous contaminants from aqueous solutions. This study underscores the potential of inexpensive biosorption technologies in providing clean and safe drinking water, particularly in industrial, rural, and urban areas.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 30-40"},"PeriodicalIF":3.7,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140781302","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}

{"title":"Impact of climate change on Kupang River flow and hydrological extremes in Greater Pekalongan, Indonesia","authors":"Fernaldi Gradiyanto,&nbsp;Priyo Nugroho Parmantoro,&nbsp;Suharyanto","doi":"10.1016/j.wse.2024.03.005","DOIUrl":"10.1016/j.wse.2024.03.005","url":null,"abstract":"<div><div>Located downstream the Kupang Catchment in Indonesia, Pekalongan faces significant land subsidence issues, leading to severe coastal flooding. This study aimed to assess the impact of climate change on future flow regimes and hydrological extremes to inform long-term water resources management strategies for the Kupang Catchment. Utilizing precipitation and air temperature data from general circulation models in the Coupled Model Intercomparison Project 6 (CMIP6) and employing bias correction techniques, the Soil and Water Assessment Tool (SWAT) hydrological model was employed to analyze climate-induced changes in hydrological fluxes, specifically streamflow. Results indicated a consistent increase in monthly streamflow during the wet season, with a substantial rise of 22.8%, alongside a slight decrease of 18.0% during the dry season. Moreover, both the frequency and severity of extremely low and high flows were projected to intensify by approximately 50% and 70%, respectively, for a 20-year return period, suggesting heightened flood and drought risks in the future. The observed declining trend in low flow, by up to 11%, indicated the potential for long-term groundwater depletion exacerbating the threat of land subsidence and coastal flooding, especially in areas with inadequate surface water management policies and infrastructure.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 69-77"},"PeriodicalIF":3.7,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140401201","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}

{"title":"Ciprofloxacin (CIP)-polluted water treatment via a facile mechanochemical route: Influencing factors and mechanism insights","authors":"Xiao-yi Wang ,&nbsp;Cheng-liang Dong ,&nbsp;Kun Xu ,&nbsp;Ri-long Xiao ,&nbsp;Xiu-juan Feng","doi":"10.1016/j.wse.2024.03.004","DOIUrl":"10.1016/j.wse.2024.03.004","url":null,"abstract":"<div><div>Degrading ciprofloxacin (CIP)-polluted water has recently emerged as an urgent environmental issue. This study introduced mechanochemical treatment (MCT) as an innovative and underexplored approach for the degradation of CIP in water. The influence of various additives (CaO, Fe₂O₃, SiO₂, Al, and Fe) on CIP degradation efficiency was investigated. Additionally, six types of composite additives (Fe–CaO, Fe–Fe₂O₃, Fe–SiO₂, Fe–Al, Al–SiO₂, and Al–CaO) were explored, with the composite of 20% Fe and 80% SiO₂ exhibiting notable performance. The impacts of additive content, pH value, and co-existing ions on CIP degradation efficiency were investigated. Furthermore, the effectiveness of MCT in degrading other medical pollutants (norfloxacin, ofloxacin, and enrofloxacin) was verified. The transformations and changes in the crystal structure, oxidation state, microstructure, and morphology of the Fe–SiO₂ composite additive were characterized using X-ray diffraction, X-ray photoelectron spectroscopy, and scanning electron microscopy techniques. This study proposed a sigmoid trend kinetic model (the Delogu model) that better elucidates the MCT process. Three plausible degradation pathways were discussed based on intermediate substance identification and pertinent literature. This study not only establishes a pathway for the facile degradation of CIP pollutants through MCT but also contributes to advancements in wastewater treatment methodologies.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 21-29"},"PeriodicalIF":3.7,"publicationDate":"2024-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140271996","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}

{"title":"Impacts of bed roughness and orientation on hydraulic jump: A review","authors":"Nishank Agrawal,&nbsp;Ellora Padhi","doi":"10.1016/j.wse.2024.03.003","DOIUrl":"10.1016/j.wse.2024.03.003","url":null,"abstract":"<div><div>Hydraulic jumps are a prevalent phenomenon in flows through spillways, chutes, and sluice gates. As hydraulic jumps exhibit substantial kinetic energy, the downstream of a hydraulic structure is prone to scour. To mitigate downstream scour and enhance energy dissipation, hydraulic jumps are often directed into stilling basins with various bed configurations, including horizontal, sloping, rough, and their combinations. This review compiles numerous analytical and experimental studies on hydraulic jumps under various bed conditions. The effect of bed roughness on sequent depth ratio, roller and jump lengths, shear stress, and energy dissipation is critically reviewed. The impacts of roughness height, flow Froude number, and bed angle on jump characteristics are discussed, substantiated by comparative analyses for distinct roughness heights. The results indicate that bed roughness intensifies shear stress, resulting in augmented energy dissipation and reductions in jump length and sequent depth. Additionally, the analytical and empirical equations proposed by researchers for different jump scenarios are discussed, and their applicability under various conditions is summarized. Finally, it suggests considering the scale effect in future research to refine the comprehension of jump stability over adverse slopes.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 90-101"},"PeriodicalIF":3.7,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140283546","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}

{"title":"A novel method for measuring interaction among multiple objectives in reservoir operation using niche theory","authors":"Xiao-kuan Ni ,&nbsp;Zeng-chuan Dong ,&nbsp;Wen-hao Jia ,&nbsp;Wen-zhuo Wang ,&nbsp;Wei Xie ,&nbsp;Hong-yi Yao ,&nbsp;Mu-feng Chen ,&nbsp;Tian-yan Zhang ,&nbsp;Zhuo-zheng Li","doi":"10.1016/j.wse.2024.03.002","DOIUrl":"10.1016/j.wse.2024.03.002","url":null,"abstract":"<div><div>Accurate capture and presentation of the interactive feedback relationships among various objectives in multi-objective reservoir operation is essential for maximizing operational benefits. In this study, the niche theory of ecology was innovatively applied to the field of reservoir operation, and a novel state–relationship (S–R) measurement analysis method was developed for multi-objective reservoir operation. This method enables the study of interaction among multiple objectives. This method was used to investigate the relationship among the objectives of power generation, water supply, and ecological protection for cascade reservoir operation in the Wujiang River Basin in China. The results indicated that the ecological protection objective was the most competitive in acquiring and capturing resources like flow and water level, while the water supply objective was the weakest. Power generation competed most strongly with ecological protection and relatively weakly with water supply. These findings facilitate decision-making throughout the reservoir operation process in the region. The S–R method based on the niche theory is convenient, efficient, and intuitive, allowing for the quantification of feedback relationships among objectives without requiring the solution of the Pareto frontier of a multi-objective problem in advance. This method provides a novel and feasible idea for studying multi-objective interactions.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"18 1","pages":"Pages 78-89"},"PeriodicalIF":3.7,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419783","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}

{"title":"A novel approach for quantifying upper reservoir leakage","authors":"Wen-jie Yang ,&nbsp;Yong Huang ,&nbsp;Xiao-song Dong ,&nbsp;Xu-feng Zhu ,&nbsp;Zhong-bo Yu ,&nbsp;Ke-han Miao","doi":"10.1016/j.wse.2024.03.001","DOIUrl":"10.1016/j.wse.2024.03.001","url":null,"abstract":"<div><div>During the operational phases of the upper reservoir in a pumped storage power station, the water level, leakage area, and hydraulic gradient of the upper reservoir alter dynamically due to the cyclic pumping and draining activities. The rising groundwater level during storage introduces distinct leakage conditions within the reservoir basin, characterized by unsaturated, partially saturated, and saturated states. Consequently, reservoir basin leakage exhibits variability across these states. To address this issue, this study formulated rational assumptions corresponding to the three leakage states in a reservoir basin and derived analytical expressions for seepage calculation based on Darcy's law and the principles governing groundwater flow refraction. A case study was conducted to investigate the relationship between various factors and leakage. The results showed that leakage primarily depended on the permeability of the impermeable layer in the reservoir basin. The upper reservoir leakage was estimated, and the calculated leakage generally agreed with the measurements, offering insights into the leakage mechanism of the Liyang pumped storage power station. In addition, the reasons for disparities between measured and calculated leakage were analyzed, and the reliability of the developed method was validated. The findings of this study provide a foundation for the seepage control design of upstream reservoirs in similar projects.</div></div>","PeriodicalId":23628,"journal":{"name":"Water science and engineering","volume":"17 4","pages":"Pages 397-405"},"PeriodicalIF":3.7,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535753","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}