npj Clean Water最新文献_第4页

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

Synergistic mechanisms of novel Z-Scheme N,S co-doped biochar-based Ag3PO4 composites for efficient removal of norfloxacin 新型 Z-Scheme N、S 共掺生物炭基 Ag3PO4 复合材料高效去除诺氟沙星的协同机制

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-09-28 DOI: 10.1038/s41545-024-00393-8

Tongtong Wang, Amit Kumar, Gaurav Sharma, Sen Wang, Junchao Jia, Jiyong Zheng, Hui Shi

{"title":"Synergistic mechanisms of novel Z-Scheme N,S co-doped biochar-based Ag3PO4 composites for efficient removal of norfloxacin","authors":"Tongtong Wang, Amit Kumar, Gaurav Sharma, Sen Wang, Junchao Jia, Jiyong Zheng, Hui Shi","doi":"10.1038/s41545-024-00393-8","DOIUrl":"10.1038/s41545-024-00393-8","url":null,"abstract":"In this study, a novel N, S-co-doped carbon-based Ag3PO4 composite photocatalyst (N,S-Ag3PO4@ACB) was synthesized using activated biochar (ACB) as a carrier and used for the efficient removal of norfloxacin (NOR), a typical bio-refractory antibiotic. We systematically investigated the degradation effects, actual wastewater treatment, the impacts of environmental factors, and the degradation pathways. The results show that N,S-Ag3PO4@ACB is essentially a p-n heterojunction with Z-scheme of Ag2S/Ag3PO4/ACB composite containing Ag nanoparticles. After 120 min of irradiation, N,S-Ag3PO4@ACB removed 90.42% of an initial NOR concentration of 50 mg L–1. The activation of graphitic N and the lone electron pairs of N and S, promoted rapid photogenerated charge transfer. Furthermore, the surface properties of ACB promoted free radicals generation, and the surface plasmon resonance effect of the Ag nanoparticles synergistically enhanced the photocatalytic activity. A new degradation intermediate of NOR was identified, and the degradation dynamics were elucidated with three main pathways.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-16"},"PeriodicalIF":10.4,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00393-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328599","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

Magnetic core supported ethyl acetate microdrops for organic contaminants removal from water 用于去除水中有机污染物的磁芯支撑醋酸乙酯微滴

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-09-27 DOI: 10.1038/s41545-024-00379-6

Jia Lyu, Fengming Zhang, Ran Li, Jinlin Song, Qing Liu, Jinyu Liu, Hua Dong

引用次数: 0

Comparing energy and exergy of multiple effect freeze desalination to MEE MSF RO 比较多重效应冷冻海水淡化与 MEE MSF RO 的能量和放能

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-09-20 DOI: 10.1038/s41545-024-00395-6

Mohammad Hendijanifard, Amir HajAli, Shahrokh Farhadi

{"title":"Comparing energy and exergy of multiple effect freeze desalination to MEE MSF RO","authors":"Mohammad Hendijanifard, Amir HajAli, Shahrokh Farhadi","doi":"10.1038/s41545-024-00395-6","DOIUrl":"10.1038/s41545-024-00395-6","url":null,"abstract":"Freeze desalination is a promising technique for wastewater treatment and zero/minimum liquid discharge systems, often requiring multiple stages to produce potable water. This research focuses on developing a Multiple Effect Freeze Desalination (MEFD) system based on experimental data for Single-Stage Desalination Efficiency (SSDE) and Single-Stage Recovery Rate (SSRR). The study analyzes various MEFD setups, calculating cooling energy consumption and correlating it with electrical usage through the coefficient of performance (COP). Comparisons with Reverse Osmosis (RO), Multi Effect Evaporation (MEE), and Multi-Stage Flashing (MSF) suggest that MEFDs may face challenges in matching RO efficiency but can compete with MEE and MSF within specific operational ranges. Exergy assessments indicate difficulties against even 10-stage MSF systems. Achieving SSDE and SSRR levels above 65% enables MEFDs to rival 10-stage MSF plants in terms of energy efficiency, surpassing MEE and MSF at over 85% efficiency. Despite these challenges, MEFDs offer benefits for treating high salt concentrations and resisting corrosion.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-14"},"PeriodicalIF":10.4,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00395-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142273322","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 multi-country survey on sanitation systems in underserved urban settlements in the Melanesian Pacific region 美拉尼西亚太平洋地区服务不足的城市住区卫生系统多国调查

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-09-19 DOI: 10.1038/s41545-024-00377-8

B. Z. Rousso, R. Sanderson, M. Love, C. Koto, S. Seru, V. Salusalu, D. Unguna, K. K. Kotra, R. Souter

{"title":"A multi-country survey on sanitation systems in underserved urban settlements in the Melanesian Pacific region","authors":"B. Z. Rousso, R. Sanderson, M. Love, C. Koto, S. Seru, V. Salusalu, D. Unguna, K. K. Kotra, R. Souter","doi":"10.1038/s41545-024-00377-8","DOIUrl":"10.1038/s41545-024-00377-8","url":null,"abstract":"Safe and enduring water, sanitation, and hygiene (WASH) for all is the key target of Sustainable Development Goal 6. Despite progress in global WASH monitoring to support SDG 6, significant data gaps persist, especially in urban informal settlements in the Melanesian Pacific Region. This study aimed to improve understanding of existing sanitation systems, residents’ preferences, and climate hazard exposure in these areas. Household surveys were conducted with 393 households in Suva (Fiji) and Port Vila (Vanuatu). Water availability for sanitation was high in Suva (99%) and Port Vila (70%), with noted improvements in sanitation superstructure. However, dry pits without slabs remain significant (15%) in Port Vila. The preference for water-based systems highlights the need for a resilient sanitation service chain, including adequate faecal sludge management, which was problematic in both locations. Reports of climate-driven hazard damage were more frequent in Vanuatu, with one in three respondents reporting impacts on their sanitation services.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-12"},"PeriodicalIF":10.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00377-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142245309","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

Multidrug-resistant high-risk clonal Escherichia coli lineages occur along an antibiotic residue gradient in the Baltic Sea 波罗的海沿抗生素残留梯度出现耐多种药物的高风险克隆大肠埃希菌系

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-09-19 DOI: 10.1038/s41545-024-00394-7

Phillip Lübcke, Stefan E. Heiden, Timo Homeier-Bachmann, Jürgen A. Bohnert, Christian Schulze, Elias Eger, Michael Schwabe, Sebastian Guenther, Katharina Schaufler

{"title":"Multidrug-resistant high-risk clonal Escherichia coli lineages occur along an antibiotic residue gradient in the Baltic Sea","authors":"Phillip Lübcke, Stefan E. Heiden, Timo Homeier-Bachmann, Jürgen A. Bohnert, Christian Schulze, Elias Eger, Michael Schwabe, Sebastian Guenther, Katharina Schaufler","doi":"10.1038/s41545-024-00394-7","DOIUrl":"10.1038/s41545-024-00394-7","url":null,"abstract":"The global spread of multidrug-resistant Escherichia coli threatens human, animal, and environmental health. Despite the recognition of water bodies as potential reservoirs, research on antimicrobial resistance (AMR) and antibiotic residues in the Baltic Sea is limited. In this study, we examined the presence of ESBL-producing E. coli in surface water in northeastern Germany. We then conducted phenotypic and genotypic analyses of the strains, which encompassed AMR and heavy metal/metalloid tolerance, biofilm formation, and detailed plasmid examination. In addition, we used solid-phase extraction with ultra-high performance liquid chromatography and mass spectrometry to quantify antibiotic residues. Our analysis identified 30 ESBL-producing E. coli isolates, some of which were associated with clinically relevant high-risk clonal lineages. We detected antibiotic residues in the environmental samples, but the antibiotic concentrations were significantly lower compared to wastewater samples. These results suggest that the Baltic Sea surface water could serve as a reservoir for ESBL-producing E. coli and clinically relevant antibiotics.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-12"},"PeriodicalIF":10.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00394-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142245310","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

Joule and photothermal heating techniques for oil desorption with techno-economic feasibility and environmental impact analysis 焦耳和光热加热技术用于石油解吸的技术经济可行性和环境影响分析

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-09-17 DOI: 10.1038/s41545-024-00387-6

Siyoung Byun, Muhammad Usman Farid, Nallapaneni Manoj Kumar, Shauhrat S. Chopra, Sangyong Nam, Alicia Kyoungjin An, Sanghyun Jeong

{"title":"Joule and photothermal heating techniques for oil desorption with techno-economic feasibility and environmental impact analysis","authors":"Siyoung Byun, Muhammad Usman Farid, Nallapaneni Manoj Kumar, Shauhrat S. Chopra, Sangyong Nam, Alicia Kyoungjin An, Sanghyun Jeong","doi":"10.1038/s41545-024-00387-6","DOIUrl":"10.1038/s41545-024-00387-6","url":null,"abstract":"Joule and photothermal heating offer promising avenues for enhancing oil recovery, desorption, and reusability by reducing the viscosity of highly viscous oils, thereby facilitating their mobility on sorbent surface. This study developed a heatable reduced graphene oxide nanoribbon (r-GONR)-coated polyvinylidene fluoride (PVDF) oil sorbent to address these viscosity challenges. The application of heating increased oil desorption by approximately 50%, significantly outperforming the conventional PVDF mat. The r-GONR sorbent, leveraging the photothermal effect, demonstrated exceptional reusability, maintaining 40% oil desorption efficiency up to the 10th cycle. Furthermore, its high oil desorption and reusability translated into considerable economic benefits, with a revenue potential of 6.4–29.0 $/m2, alongside significant environmental impact reduction. This study introduces a novel, sustainable approach to oil desorption and reuse, underscoring the practical applications of heatable materials in enhancing oil recovery.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-13"},"PeriodicalIF":10.4,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00387-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142235134","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