npj Clean Water最新文献_第3页

Understanding water-energy-carbon nexus in English and Welsh water industry by assessing eco-productivity of water companies 通过评估水务公司的生态生产力，了解英国和威尔士水务行业的水-能源-碳关系

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-11-28 DOI: 10.1038/s41545-024-00420-8

Alexandros Maziotis, Ramon Sala-Garrido, Manuel Mocholi-Arce, Maria Molinos-Senante

引用次数: 0

Contrastive learning method for leak detection in water distribution networks 配水管网泄漏检测的对比学习方法

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-11-27 DOI: 10.1038/s41545-024-00406-6

Rongsheng Liu, Tarek Zayed, Rui Xiao

{"title":"Contrastive learning method for leak detection in water distribution networks","authors":"Rongsheng Liu, Tarek Zayed, Rui Xiao","doi":"10.1038/s41545-024-00406-6","DOIUrl":"10.1038/s41545-024-00406-6","url":null,"abstract":"Detecting and mitigating leaks in water distribution networks are vital for water conservation. Machine-learning-based (ML) acoustic leak detection models were introduced as effective alternatives for leak management. However, ML model training requires sufficient labeled data, which hinders related development. To address this challenge, this study employed contrastive learning (CL) for leak detection using limited labeled signals. Experimental results indicate that flip-x and amplitude scaling are optimal combinations for contrastive learning. Besides, ablation and t-distributed stochastic neighbor embedding (t-SNE) results reveal that increasing the model depth does not always yield performance improvement, and five convolutional blocks are more suitable for the leak detection problem in this study. Comparison experiments demonstrate that contrastive learning outperforms supervised learning (SL) when trained with insufficient labeled data. The out-of-sample validation results indicate that the proposed leak detection model is robust and effective in unexplored pipelines. The proposed framework significantly advances ML-based leak detection research and supports sustainable water management practices.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-13"},"PeriodicalIF":10.4,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00406-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142753776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A colorimetric sensing method for direct determination of the adsorption capacity of colored cations in adsorbents 直接测定吸附剂中有色阳离子吸附容量的比色传感法

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-11-26 DOI: 10.1038/s41545-024-00412-8

Siyang Xing, Congle Li, Jialin Wang, Mengmeng Sun, Yingying Zhao, Yixing Gou, Panpan Zhang, Jingtao Bi

引用次数: 0

Unveiling mechanistic intricacies of Chlorella pyrenoidosa-mediated pathogen removal from sewage 揭示小球藻介导的污水病原体清除机制的复杂性

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-11-22 DOI: 10.1038/s41545-024-00411-9

Ankita Bhatt, Pratham Arora, Sanjeev Kumar Prajapati

{"title":"Unveiling mechanistic intricacies of Chlorella pyrenoidosa-mediated pathogen removal from sewage","authors":"Ankita Bhatt, Pratham Arora, Sanjeev Kumar Prajapati","doi":"10.1038/s41545-024-00411-9","DOIUrl":"10.1038/s41545-024-00411-9","url":null,"abstract":"Amidst the global sanitation challenges of water pollution, waterborne diseases, and the alarming presence of pathogens in disinfected water, microalgal technology has emerged as a viable alternative for wastewater treatment. Recently, the ability of microalgae to remove pathogens from wastewater has been highlighted. However, a critical knowledge gap exists regarding microalgae-mediated pathogen removal mechanisms. The present study uncovers the intricate mechanisms of Chlorella pyrenoidosa-mediated Escherichia coli removal from sewage. Microalgae-induced pH increase was identified as the most crucial mechanism, followed by photooxidation and attachment, mediated by the hydroxyl group. Longer photoperiods or ultraviolet irradiation produced high oxidative stress, promoting microalgal exopolysaccharides’ production and increasing pathogen entrapment. The knowledge of crucial removal mechanisms can be harnessed for the development of more efficient, innovative, and scalable microalgal systems. Such improved systems offer a sustainable solution to address water-related issues by improving wastewater treatment, increasing access to clean water, and reducing the transmission risk of waterborne diseases.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-12"},"PeriodicalIF":10.4,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00411-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142690873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Perfluoroalkyl substances concentration from groundwater via direct contact membrane distillation 通过直接接触膜蒸馏法从地下水中提取全氟烷基物质的浓度

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-11-20 DOI: 10.1038/s41545-024-00414-6

Chang Ying Shi, Gang Chen, Ludovic F. Dumée

引用次数: 0

Perspectives on transport pathways of microplastics across the Middle East and North Africa (MENA) region 中东和北非（MENA）地区微塑料运输途径透视

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-11-17 DOI: 10.1038/s41545-024-00410-w

Sisi Pu, Hooralain Bushnaq, Catherine Munro, Yann Gibert, Radhey Sharma, Vandana Mishra, Ludovic F. Dumée

引用次数: 0

Optimization of valve switch control for contamination detection in water distribution network 优化配水管网污染检测的阀门开关控制

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-11-12 DOI: 10.1038/s41545-024-00407-5

Jeng-Shyang Pan, Hao Shu, Qingyong Yang, Yu-Chung Huang, Shu-Chuan Chu

引用次数: 0

Turning mine-tailing streams into sources of water and mineral salts in a membrane-sustained circular scenario 在膜维持循环方案中将地雷尾流转化为水和矿物盐来源

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-11-09 DOI: 10.1038/s41545-024-00404-8

Enrica Fontananova, Elvira Pantuso, Laura Donato, Elisa Esposito, Rosanna Rizzi, Rocco Caliandro, Gianluca Di Profio

{"title":"Turning mine-tailing streams into sources of water and mineral salts in a membrane-sustained circular scenario","authors":"Enrica Fontananova, Elvira Pantuso, Laura Donato, Elisa Esposito, Rosanna Rizzi, Rocco Caliandro, Gianluca Di Profio","doi":"10.1038/s41545-024-00404-8","DOIUrl":"10.1038/s41545-024-00404-8","url":null,"abstract":"The discharge of wastewater from the mining industry has a critical ecological impact, potentially endangering both soil and marine ecosystems. Alternatively, recovering pure water and valuable materials from these hypersaline streams through a technologically efficient process, would help reduce the ecological impact of the waste, while providing a viable supply chain for raw materials such as magnesium, potassium and others, considered critical to the economy. In this context, this work aimed to simultaneously recover pure water and mineral salts from mine wastewater by membrane-assisted crystallization (MAC). A prior theoretical study based on thermodynamic parameters attempted to predict salts precipitation at different temperatures. MAC tests were then performed at specific thermal gradients and feed pretreatment conditions, achieving preferential precipitation of solids products of different composition containing large quantities of Ca or Mg/K minerals from the real mine tailing wastewater. The experiments also demonstrated the central impact of heterogeneous nucleation effects.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-16"},"PeriodicalIF":10.4,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00404-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142597615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bacterial cellulose-graphene oxide composite membranes with enhanced fouling resistance for bio-effluents management 用于生物废水处理的抗污能力更强的细菌纤维素-氧化石墨烯复合膜

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-10-25 DOI: 10.1038/s41545-024-00403-9

Ishfaq Showket Mir, Ali Riaz, Julie Fréchette, Joy Sankar Roy, James Mcelhinney, Sisi Pu, Hari Kalathil Balakrishnan, Jesse Greener, Ludovic F. Dumée, Younès Messaddeq

{"title":"Bacterial cellulose-graphene oxide composite membranes with enhanced fouling resistance for bio-effluents management","authors":"Ishfaq Showket Mir, Ali Riaz, Julie Fréchette, Joy Sankar Roy, James Mcelhinney, Sisi Pu, Hari Kalathil Balakrishnan, Jesse Greener, Ludovic F. Dumée, Younès Messaddeq","doi":"10.1038/s41545-024-00403-9","DOIUrl":"10.1038/s41545-024-00403-9","url":null,"abstract":"Bacterial cellulose composites hold promise as renewable bioinspired materials for industrial and environmental applications. However, their use as free-standing water filtration membranes is hindered by low compressive strength, fouling, and poor contaminant selectivity. This study investigates the potential of bacterial cellulose-graphene oxide composites membranes for fouling resistance in pressure-driven filtration. Graphene oxide dispersed in poly(ethylene glycol) (PEG-400) is incorporated as a reinforcing filler into 3D network of bacterial cellulose using an in-situ synthesis method. The effect of graphene oxide on in situ fermentation yield and the formation of percolated-network in the composites shows that the optimal membrane properties are reached at a graphene oxide loading of 2 mg/mL. The two-dimensional graphene oxide nanosheets uniformly dispersed into the matrix of bacterial cellulose nanofibers via hydrogen-bonded interactions demonstrated nearly twofold higher water flux (380 L m−2 h−1) with a molecular weight cut-off ranging between 100–200 KDa and a sixfold increase in wet compression strength than pristine BC. When exposed to synthetic organic foulants and bacterial rich feed solutions, the composite membranes showed more than 95% flux recovery. Additionally, the membranes achieved over 95% rejection of synthetic natural organic matter and bacterial rich solutions, showcasing their enhanced fouling resistance and selectivity.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-15"},"PeriodicalIF":10.4,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00403-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142490466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Training caretakers to clean community wells is a highly cost-effective way to reduce exposure to coliform bacteria 培训看护人清洁社区水井是减少大肠菌群暴露的一种极具成本效益的方法

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-10-23 DOI: 10.1038/s41545-024-00401-x

Md. Ahasan Habib, Serena Cocciolo, Md. Mir Abu Raihan, Prosun Bhattacharya, Anna Tompsett

引用次数: 0