Water Science & Technology最新文献_第8页

Microplastic inhibits the sorption of trichloroethylene on modified biochar 微塑料抑制三氯乙烯在改性生物炭上的吸附作用

Water Science & Technology Pub Date : 2024-04-04 DOI: 10.2166/wst.2024.112

Hainan Lu

引用次数: 0

Modelling effluent reuse in the pulp and paper industry to predict consequences on conductivity 建立纸浆和造纸工业污水回用模型，预测对电导率的影响

Water Science & Technology Pub Date : 2024-04-04 DOI: 10.2166/wst.2024.113

Stephanie Prasse, Patrick Huber, P. Ottenio, Eric Fourest

{"title":"Modelling effluent reuse in the pulp and paper industry to predict consequences on conductivity","authors":"Stephanie Prasse, Patrick Huber, P. Ottenio, Eric Fourest","doi":"10.2166/wst.2024.113","DOIUrl":"https://doi.org/10.2166/wst.2024.113","url":null,"abstract":"\u0000 \u0000 The objective of this study was to assess, through simulation, conductivity variations in pulp and paper circuits when recycling waste water treatment plant (WWTP) effluent with a view to reducing fresh water use in a tissue mill. WWTP effluent was recycled in the process for different uses. A PS2000 digital model coupled with the PHREEQC chemical simulation engine was used to identify and quantify the main sources of conductivity: caustic soda, sodium bisulphite and acetate production through anaerobic microbial activity. Recycling WWTP effluent enables fresh water uptake to be reduced by 50% when used for pulp dilution or white water, by 81% when used in paper machine showers, and up to 96% for all uses combined. As fresh water use decreases, circuit closure increases along with, consequently, COD and conductivity. COD build-up can be controlled by best available techniques application. Recycling WWTP effluent has a strong impact on conductivity. However, the impact of high conductivity levels on additives performance is limited in the case of the mill studied. Acetate concentration could be controlled by better agitation of tanks or the introduction of air by pumps. Furthermore, limiting acetate production can reduce the need for caustic soda to control the pH.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"44 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140741921","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

Investigation of innovative designs of high-velocity channels for damping kinetic energy of flows 研究用于阻尼流动动能的高速通道创新设计

Water Science & Technology Pub Date : 2024-03-29 DOI: 10.2166/wst.2024.106

Ergali Rustem, Kuat Yestaev, Ergali Akhmetov, Ainur Abduvalova, Temirlan Orynbassar

引用次数: 0

Pollution sources apportionment and suitability assessment of Lah River, Ethiopia: conjunctive application of multivariate statistical analysis and water quality index 埃塞俄比亚拉赫河的污染源分配和适宜性评估：多变量统计分析和水质指数的联合应用

Water Science & Technology Pub Date : 2024-03-29 DOI: 10.2166/wst.2024.103

Zelalem Abera Angello, M. A. Mengist

{"title":"Pollution sources apportionment and suitability assessment of Lah River, Ethiopia: conjunctive application of multivariate statistical analysis and water quality index","authors":"Zelalem Abera Angello, M. A. Mengist","doi":"10.2166/wst.2024.103","DOIUrl":"https://doi.org/10.2166/wst.2024.103","url":null,"abstract":"\u0000 \u0000 This study aimed to assess spatiotemporal water quality variation and its suitability for irrigation and domestic purposes in Lah River using the irrigation water quality index (IWQI) and the weighted arithmetic water quality index (WAWQI). The IWQI analysis result showed that the sodium absorption ratio, residual sodium carbonate, potential salinity, Kelly index, magnesium ratio, sodium percentage, and permeability index were found to be 1.07 mEq/L, −0.43 mEq/L, 0.8 mEq/L, 0.78 mEq/L, 43.01%, 42.95%, and 63.46%, respectively. The IWQIs revealed that the water quality of the river was appropriate for agricultural use during the dry season. Furthermore, the calculated WAWQI of the river water ranged from 123.13 to 394.72 during the wet season, indicating the high pollution levels in the Lah River and incompatibility for drinking purposes. On the other hand, the principal component analysis identified two pollution sources during the wet season and three during the dry season. In addition, the positive matrix prioritization model predicted the pollution source's contribution quite well with a signal-to-noise ratio of >2 and a residual error between −3 and 3 for both seasons. This study suggests that water quality of Lah River is degrading periodically necessitating proper pollution management.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"39 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366868","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

Discharge coefficient of vertical sluice gates with broad crested weir under free-submerged orifice flows using best subset regression 采用最佳子集回归法计算自由沉没孔口流下带宽波峰堰的垂直水闸的排水系数

Water Science & Technology Pub Date : 2024-03-29 DOI: 10.2166/wst.2024.102

Zhuoying Cang, Dongdong Jia, Jinyang Wang, Jun Yang, Youzhi Hao, Xiaona Chen

{"title":"Discharge coefficient of vertical sluice gates with broad crested weir under free-submerged orifice flows using best subset regression","authors":"Zhuoying Cang, Dongdong Jia, Jinyang Wang, Jun Yang, Youzhi Hao, Xiaona Chen","doi":"10.2166/wst.2024.102","DOIUrl":"https://doi.org/10.2166/wst.2024.102","url":null,"abstract":"\u0000 \u0000 Accurate calculation of flow discharge for sluice gates is essential in irrigation, water supply, and structure safety. The measurement of discharge with the requirement of distinguishing flow regimes is not conducive to application. In this study, a novel approach that considers both free and submerged flow was proposed. The energy–momentum method was employed to derive the coefficient of discharge. Subsequently, the discharge coefficient was determined through the experiment which was performed on the physical model of a vertical sluice gate with a broad-crested weir. Feature engineering, incorporating dimensional analysis, feature construction, and correlation-based selection were performed. The best subset regression method was employed to develop regression equations of the discharge coefficient with the generated features. The derived formula was applied to compute the discharge coefficient in the vertical sluice gate and determine the flow discharge. The accuracy of adopted method was assessed by comparing it with recent studies on submerged flow, and the results demonstrate that the developed approach achieves a high level of accuracy in calculating flow discharge. The coefficient of determination for the calculated flow rate is 0.993, and the root mean square percentage error is 5.04%.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"64 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365143","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

Impact of PVC microplastics in photodynamic inactivation of Staphylococcus aureus and MRSA 聚氯乙烯微塑料对光动力灭活金黄色葡萄球菌和 MRSA 的影响

Water Science & Technology Pub Date : 2024-03-29 DOI: 10.2166/wst.2024.104

A. R. Lima, Kamila Jessie Sammarro Silva, Antônio Sérgio Nakao Aguiar, Mariana de Souza, Thalita Hellen Nunes Lima, K. Blanco, V. Bagnato, L. D. Dias

{"title":"Impact of PVC microplastics in photodynamic inactivation of Staphylococcus aureus and MRSA","authors":"A. R. Lima, Kamila Jessie Sammarro Silva, Antônio Sérgio Nakao Aguiar, Mariana de Souza, Thalita Hellen Nunes Lima, K. Blanco, V. Bagnato, L. D. Dias","doi":"10.2166/wst.2024.104","DOIUrl":"https://doi.org/10.2166/wst.2024.104","url":null,"abstract":"\u0000 \u0000 Photodynamic processes have found widespread application in therapies. These processes involve photosensitizers (PSs) that, when excited by specific light wavelengths and in the presence of molecular oxygen, generate reactive oxygen species (ROS), that target cells leading to inactivation. Photodynamic action has gained notable attention in environmental applications, particularly against pathogens and antibiotic-resistant bacteria (ARB) that pose a significant challenge to public health. However, environmental matrices frequently encompass additional contaminants and interferents, including microplastics (MPs), which are pollutants of current concern. Their presence in water and effluents has been extensively documented, highlighting their impact on conventional treatment methods, but this information remains scarce in the context of photodynamic inactivation (PDI) setups. Here, we described the effects of polyvinyl chloride (PVC) microparticles in PDI targeting Staphylococcus aureus and its methicillin-resistant strain (MRSA), using curcumin as a PS under blue light. The presence of PVC microparticles does not hinder ROS formation; however, depending on its concentration, it can impact bacterial inactivation. Our results underscore that PDI remains a potent method for reducing bacterial concentrations in water and wastewater containing ARB, even in highly contaminated scenarios with MPs.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"59 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366503","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

Determination of seawater COD spectra using double-loop contraction and sorted frog optimization 利用双环收缩和分类蛙优化确定海水 COD 光谱

Water Science & Technology Pub Date : 2024-03-28 DOI: 10.2166/wst.2024.101

Shiwei Hou, Yingying Zhang, Dachao Yuan, Xiandong Feng, Ying Zhang

{"title":"Determination of seawater COD spectra using double-loop contraction and sorted frog optimization","authors":"Shiwei Hou, Yingying Zhang, Dachao Yuan, Xiandong Feng, Ying Zhang","doi":"10.2166/wst.2024.101","DOIUrl":"https://doi.org/10.2166/wst.2024.101","url":null,"abstract":"\u0000 This study develops a novel double-loop contraction and C value sorting selection-based shrinkage frog-leaping algorithm (double-contractive cognitive random field [DC-CRF]) to mitigate the interference of complex salts and ions in seawater on the ultraviolet–visible (UV–Vis) absorbance spectra for chemical oxygen demand (COD) quantification. The key innovations of DC-CRF are introducing variable importance evaluation via C value to guide wavelength selection and accelerate convergence; a double-loop structure integrating random frog (RF) leaping and contraction attenuation to dynamically balance convergence speed and efficiency. Utilizing seawater samples from Jiaozhou Bay, DC-CRF-partial least squares regression (PLSR) reduced the input variables by 97.5% after 1,600 iterations relative to full-spectrum PLSR, RF-PLSR, and CRF-PLSR. It achieved a test R2 of 0.943 and root mean square error of 1.603, markedly improving prediction accuracy and efficiency. This work demonstrates the efficacy of DC-CRF-PLSR in enhancing UV–Vis spectroscopy for rapid COD analysis in intricate seawater matrices, providing an efficient solution for optimizing seawater spectra.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"54 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140371359","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

Impact of treated wastewater on plant growth: leaf fluorescence, reflectance, and biomass-based assessment 经处理的废水对植物生长的影响：叶片荧光、反射率和生物量评估

Water Science & Technology Pub Date : 2024-03-27 DOI: 10.2166/wst.2024.097

S. Ofori, David Kwesi Abebrese, A. Klement, Daniel Provazník, Ivana Tomášková, I. Růžičková, Jiří Wanner

{"title":"Impact of treated wastewater on plant growth: leaf fluorescence, reflectance, and biomass-based assessment","authors":"S. Ofori, David Kwesi Abebrese, A. Klement, Daniel Provazník, Ivana Tomášková, I. Růžičková, Jiří Wanner","doi":"10.2166/wst.2024.097","DOIUrl":"https://doi.org/10.2166/wst.2024.097","url":null,"abstract":"\u0000 The study evaluated the impact of treated wastewater on plant growth through the use of hyperspectral and fluorescence-based techniques coupled with classical biomass analyses, and assessed the potential of reusing treated wastewater for irrigation without fertilizer application. Cherry tomato (Solanum lycopersicum) and cabbage (Brassica oleracea L.) were irrigated with tap water (Tap), secondary effluent (SE), and membrane effluent (ME). Maximum quantum yield of photosystem II (Fv/Fm) of tomato and cabbage was between 0.78 to 0.80 and 0.81 to 0.82, respectively, for all treatments. The performance index (PI) of Tap/SE/ME was 2.73, 2.85, and 2.48 for tomatoes and 4.25, 3.79, and 3.70 for cabbage, respectively. Both Fv/Fm and PI indicated that the treated wastewater did not have a significant adverse effect on the photosynthetic efficiency and plant vitality of the crops. Hyperspectral analysis showed higher chlorophyll and nitrogen content in leaves of recycled water-irrigated crops than tap water-irrigated crops. SE had 10.5% dry matter composition (tomato) and Tap had 10.7% (cabbage). Total leaf count of Tap/SE/ME was 86, 111, and 102 for tomato and 37, 40, and 42 for cabbage, respectively. In this study, the use of treated wastewater did not induce any photosynthetic-related or abiotic stress on the crops; instead, it promoted crop growth.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"45 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140377020","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

Spatiotemporal distribution of ecological risk of antibiotics in seven major river basins of China: an optimized multilevel assessment approach 中国七大流域抗生素生态风险的时空分布：一种优化的多层次评估方法

Water Science & Technology Pub Date : 2024-03-27 DOI: 10.2166/wst.2024.100

Wei Liu, Chunsheng Zhou, Xiangfei Wang, Xiulian Bai, Yazhe Ren

{"title":"Spatiotemporal distribution of ecological risk of antibiotics in seven major river basins of China: an optimized multilevel assessment approach","authors":"Wei Liu, Chunsheng Zhou, Xiangfei Wang, Xiulian Bai, Yazhe Ren","doi":"10.2166/wst.2024.100","DOIUrl":"https://doi.org/10.2166/wst.2024.100","url":null,"abstract":"\u0000 Antibiotics have been recognized as emerging pollutants due to their ecological and human health risks. This paper aims to enhance the ecological risk assessment (ERA) framework for antibiotics, to illustrate the distribution of these risks across different locations and seasons, and to identify the antibiotics that pose high ecological risk. This paper focuses on 52 antibiotics in 7 major basins of China. Relying on the optimized approach of ERA and antibiotic monitoring data published from 2017 to 2021, the results of ERA are presented in multilevel. Across the study area, there are marked variations in the spatial distribution of antibiotics' ecological risks. The Huaihe River Basin, the Haihe River Basin, and the Liaohe River Basin are the top three in the ranking of present ecological risks. The research results also reveal significant differences in temporal variation, underscoring the need for increased attention during certain seasons. Ten antibiotics with high contribution rates to ecological risk are identified, which is an important reference to formulate an antibiotic control list. The multilevel results provided both risk values and their ubiquities across a board study region, which is a powerful support for developing ecological risk management of antibiotics.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"94 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140377331","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

Applications of different types of heat pipes in solar desalinations: A comprehensive review 不同类型热管在太阳能海水淡化中的应用：综述

Water Science & Technology Pub Date : 2024-03-26 DOI: 10.2166/wst.2024.094

Habib Ben Bacha, Mohammad Alhuyi Nazari, Naeem Ullah, Nehad Ali Shah

{"title":"Applications of different types of heat pipes in solar desalinations: A comprehensive review","authors":"Habib Ben Bacha, Mohammad Alhuyi Nazari, Naeem Ullah, Nehad Ali Shah","doi":"10.2166/wst.2024.094","DOIUrl":"https://doi.org/10.2166/wst.2024.094","url":null,"abstract":"\u0000 Desalination processes are energy consuming and it is required to apply clean energy sources for supplying them to prevent environmental issues. Solar energy is one of the attractive clean energy sources for desalination. In solar thermal desalination systems, different thermal components could be used for heat transfer purpose. In solar desalination technologies, heat pipe as efficient heat transfer mediums could be employed to transfer absorbed and/or stored thermal energy. The objective of this study is to review applications of heat pipes in solar energy desalination systems. Regarding the performance dependency of these thermal systems on the variety of factors, scholars have investigated these systems by consideration of the effect of different influential factors. Based on the results, it is concluded that use of heat pipes could lead to proper performance of solar desalination systems. Aside from direct transfer of absorbed heat from solar radiation, heat pipes can be applied in the storage units of solar desalination systems to keep the systems active in night-hours or low solar irradiation conditions. The overall performance of the solar desalinations systems with heat pipes can be influenced by some factors such as filling ratio and operating fluid that affect the performance of heat pipes.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"122 30","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140380045","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

Water Science &amp; Technology最新文献

Water Science & Technology最新文献