npj Clean Water最新文献_第6页

Assessing the influence of environmental variables on energy efficiency changes in the provision of drinking water services 评估环境变量对提供饮用水服务过程中能效变化的影响

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-10-10 DOI: 10.1038/s41545-024-00400-y

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

{"title":"Assessing the influence of environmental variables on energy efficiency changes in the provision of drinking water services","authors":"Ramon Sala-Garrido, Manuel Mocholi-Arce, Alexandros Maziotis, Maria Molinos-Senante","doi":"10.1038/s41545-024-00400-y","DOIUrl":"10.1038/s41545-024-00400-y","url":null,"abstract":"Within the context of the water-energy nexus in drinking water provision, it is crucial to evaluate temporal shifts in energy efficiency. Utilizing the Stochastic Nonparametric Envelopment of Data (StoNED) approach, this research estimates longitudinal variations in the energy efficiency of drinking water services integrating multiple environmental variables. The analysis, conducted in England and Wales from 2008 to 2020, indicates that the source and quality of raw water, as well as population density, influenced the energy performance of water utilities. Quantitative findings evidenced marked disparity in energy efficiency among different companies, with an average efficiency of 0.617 and a range from 0.437 to 0.944. The dynamic assessment indicates an average annual enhancement of 1.1% in the sector, predominantly propelled by technical advancements (0.9%) rather than by improvements in efficiency (0.2%). This study emphasizes the critical need for bespoke policies and incentives to boost energy efficiency and support sustainable urban water management.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-10"},"PeriodicalIF":10.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00400-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397566","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

Modelling scenarios for water supply and sanitation technologies in Jordan 约旦供水和卫生技术模拟方案

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-10-10 DOI: 10.1038/s41545-024-00398-3

Margarita Garfias Royo, Himanshu Parikh, Luiza Campos, Samer Talozi, Priti Parikh

引用次数: 0

Sustainable cost recovery principles can drive equitable, ongoing funding of critical urban sanitation services 可持续成本回收原则可推动公平、持续地为重要的城市环卫服务供资

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-10-10 DOI: 10.1038/s41545-024-00399-2

Naomi Carrard, Juliet Willetts, Antoinette Kome, Rajeev Munankami

引用次数: 0

Quantitative Raman analysis of microplastics in water using peak area ratios for concentration determination 利用峰面积比确定水中微塑料的浓度，对其进行定量拉曼分析

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-10-09 DOI: 10.1038/s41545-024-00397-4

Eun Su Jung, Jin Hyun Choe, Jin Seok Kim, Da Won Ahn, JinUk Yoo, Tae Min Choi, Sung Gyu Pyo

引用次数: 0

Chemical, ecotoxicological characteristics, environmental fate, and treatment methods applied to cyanide-containing wastewater 含氰废水的化学、生态毒理学特征、环境归宿和处理方法

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-10-05 DOI: 10.1038/s41545-024-00392-9

Katherine Vaca-Escobar, David Arregui-Almeida, Patricio Espinoza-Montero

引用次数: 0

Indicators for evaluating shared sanitation quality: a systematic review and recommendations for sanitation monitoring 评价共享环境卫生质量的指标：系统审查和环境卫生监测建议

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-10-04 DOI: 10.1038/s41545-024-00386-7

Sarah Lebu, Lauren Sprouse, John Apambilla Akudago, Carrie Baldwin-SoRelle, Chimdi C. Muoghalu, Carmen Anthonj, Barbara Evans, Joe Brown, Jamie Bartram, Musa Manga

{"title":"Indicators for evaluating shared sanitation quality: a systematic review and recommendations for sanitation monitoring","authors":"Sarah Lebu, Lauren Sprouse, John Apambilla Akudago, Carrie Baldwin-SoRelle, Chimdi C. Muoghalu, Carmen Anthonj, Barbara Evans, Joe Brown, Jamie Bartram, Musa Manga","doi":"10.1038/s41545-024-00386-7","DOIUrl":"10.1038/s41545-024-00386-7","url":null,"abstract":"Shared sanitation facilities have replaced open defecation in many areas, improving sanitation access. Although a broad body of literature has been published regarding the importance of shared sanitation services, it is still unclear how to assess their quality. The objective of this review was to synthesize evidence on the use of shared sanitation facilities in informal settlements and identify indicators for assessing their quality. We conducted a systematic review of relevant studies and a total of 248 studies were included in the final analysis. Findings include a proposed list of indicators for evaluating the quality of shared sanitation such as the number of people sharing facilities, cleanliness, privacy, facility location, accessibility, and safety, and a tool for distinguishing between sanitation facilities that are improved shared, basic shared and unimproved shared. We recommend incorporating the proposed indicators in primary data collection, and routine national and global sanitation monitoring.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-15"},"PeriodicalIF":10.4,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00386-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142374207","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

Production of biostable drinking water using a lab-scale biological trickling filter enriched with hydrogen-oxidizing bacteria 利用富含氢氧化细菌的实验室规模生物滴流过滤器生产生物稳定饮用水

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-10-03 DOI: 10.1038/s41545-024-00396-5

Jorien Favere, Fien Waegenaar, Mingsheng Jia, Karel Folens, Milan Verhoeven, Elien Balliu, Andreja Rajkovic, Bart De Gusseme, Nico Boon

{"title":"Production of biostable drinking water using a lab-scale biological trickling filter enriched with hydrogen-oxidizing bacteria","authors":"Jorien Favere, Fien Waegenaar, Mingsheng Jia, Karel Folens, Milan Verhoeven, Elien Balliu, Andreja Rajkovic, Bart De Gusseme, Nico Boon","doi":"10.1038/s41545-024-00396-5","DOIUrl":"10.1038/s41545-024-00396-5","url":null,"abstract":"Safeguarding the drinking water quality remains a challenge from the production site to the tap. Alternatively to chemical disinfection, biostable drinking water could serve as a more sustainable approach to produce microbially safe drinking water and to maintain the microbial quality in the drinking water distribution system (DWDS). In this study, the potential of hydrogen-oxidizing bacteria (HOB) to produce biostable drinking water was examined in a continuous trickling filter supplied with hydrogen gas. A biofilm was naturally enriched for 5 months and the bacterial regrowth, invasion potential, and nutrient composition of the water were determined. Treatment improved the biostability significantly, and it is hypothesized that nutrient limitation, especially phosphorous, was a driving force. As a result, the regrowth and invasion potential were lowered, as shown with specific biostability bioassays. Overall, this study demonstrates the proof-of-concept of HOB for producing biostable drinking water through nutrient limitation.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-9"},"PeriodicalIF":10.4,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00396-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368852","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

Sewage leakage challenges urban wastewater management as evidenced by the Yangtze River basin of China 从中国长江流域看污水渗漏对城市污水管理的挑战

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-09-30 DOI: 10.1038/s41545-024-00388-5

Biqing Xia, Sisi Li, Wangzheng Shen, Menghan Mi, Yanhua Zhuang, Liang Zhang

{"title":"Sewage leakage challenges urban wastewater management as evidenced by the Yangtze River basin of China","authors":"Biqing Xia, Sisi Li, Wangzheng Shen, Menghan Mi, Yanhua Zhuang, Liang Zhang","doi":"10.1038/s41545-024-00388-5","DOIUrl":"10.1038/s41545-024-00388-5","url":null,"abstract":"Sewage leakage, including uncollected, collected but exfiltrated, and collected but discharged with stormwater in combined sewer overflows, becomes a key challenge to clean water around the world. This study proposed a mass balance model to quantify sewage leakage and analyzed its influencing factors. Approximately 56% (53%–59%) of domestic total nitrogen loads in the Yangtze River basin of China leak out without treatment, two-thirds are exfiltrated or overflowed, significantly impacting receiving water quality. Cities with higher precipitation have greater leakage, indicating overflows are important. Pipe density has limited impact, showing higher importance of pipe quality over quantity. The per capita leakage rate first increases with city size and then decreases, showing the economies of scale. Yet uneven distribution of population and economy within megacities leads to greater leakage. Hence, separated sewage systems of rainwater and wastewater, regular maintenance and adapting centralized and decentralized systems are recommended, tailored to city-specific leakage characteristics.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-8"},"PeriodicalIF":10.4,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00388-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142330341","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

The enhancement of anammox by graphene-based and iron-based nanomaterials in performance and mechanisms 石墨烯基和铁基纳米材料在性能和机理上对anammox的增强作用

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-09-30 DOI: 10.1038/s41545-024-00385-8

Shu Wang, Kaoming Zhang, Yu Miao, Zhu Wang

{"title":"The enhancement of anammox by graphene-based and iron-based nanomaterials in performance and mechanisms","authors":"Shu Wang, Kaoming Zhang, Yu Miao, Zhu Wang","doi":"10.1038/s41545-024-00385-8","DOIUrl":"10.1038/s41545-024-00385-8","url":null,"abstract":"Anaerobic ammonium oxidation (anammox) is a cost-effective biological nitrogen removal technology, yet its time-consuming start-up and significant environmental sensitivity are major barriers to its widespread use. Nonetheless, nanotechnology could provide an innovative approach to address these challenges, and particularly, graphene-based and iron-based nanomaterials have shown remarkable results. Graphene-based nanomaterials are beneficial due to their vast specific surface area, superior electrical conductivity, and strong biocompatibility, while iron-based nanomaterials offer valuable redox potential and are readily accessible. Although many studies have investigated the role of nanomaterials in boosting anammox processes, a deeper understanding of the mechanisms through which nanomaterials promote anammox is essential for practical application. This study provided a comprehensive summary of the latest research on how graphene-based and iron-based nanomaterials improve anammox for nitrogen removal, enhance specific anammox activity (SAA), and increase the growth rate of anammox bacteria. We also discussed their role in enhancing system stability and integrating anammox with other nitrogen removal pathways. The mechanisms by which these nanomaterials enhance anammox are analyzed and compared, focusing on extracellular polymeric substances (EPS) formation, electron transfer, functional genes and enzymes, and quorum sensing (QS). Finally, the study outlined several potential directions for future development, including identifying challenges and proposing solutions.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-16"},"PeriodicalIF":10.4,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00385-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142330337","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

High-strength TiO2/TPU composite fiber based textiles for organic pollutant removal 用于去除有机污染物的高强度 TiO2/TPU 复合纤维基纺织品

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-09-28 DOI: 10.1038/s41545-024-00390-x

Lihui Xiao, Jing Zhang, Tianguang Lu, Geng-heng Zhou, Yi Ren, Ziye Zheng, Xian-zheng Yuan, Shu-guang Wang, Zuoli He

{"title":"High-strength TiO2/TPU composite fiber based textiles for organic pollutant removal","authors":"Lihui Xiao, Jing Zhang, Tianguang Lu, Geng-heng Zhou, Yi Ren, Ziye Zheng, Xian-zheng Yuan, Shu-guang Wang, Zuoli He","doi":"10.1038/s41545-024-00390-x","DOIUrl":"10.1038/s41545-024-00390-x","url":null,"abstract":"Effective integration of nanostructured photocatalysts into polymer matrices is crucial for the broad practical application of fiber-based photocatalytic composite textiles. Herein, highly durable TiO2/TPU composite fibers with high TiO2 content (>30 wt. %) were prepared through wet spinning using 1D electrospun TiO2 nanofibers (TNFs). Due to the fiber reinforcement principle, the TNF/TPU composite fibers exhibited superior mechanical properties compared with pure TPU fibers. Furthermore, the TNF/TPU composite fibers with a ratio of 1:2 process impressive degradation efficiency for rhodamine B (RhB). The orientation of 1D TNFs and stronger interface between TNF and TPU matrices not only enable the excellent load sharing and transfer effects following fiber pullout and crack bridging mechanisms, but also improve photogenerated charge transfer efficiency, resulting in high strength and high photocatalytic activity. In addition, enhanced TNF exposure on the fiber is due to the hollow and porous structures of composite fibers, which is advantageous for photocatalytic degradation. Notably, when the RhB concentration exceeded 15 ppm, the TNF/TPU composite fibers exhibited higher degradation efficiency than the TNF powder. Therefore, TNF/TPU composite fiber–based textiles with high photocatalytic activity and strength are promising for overcoming the separation and recovery issues of nanostructured catalysts in practical wastewater treatment applications.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-8"},"PeriodicalIF":10.4,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00390-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328577","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