Water Research X最新文献_第10页

Occurrence and removal of 42 legacy and emerging per- and polyfluoroalkyl substances (PFAS) in drinking water treatment plants in South Korea 韩国饮用水处理厂42种遗留和新出现的全氟烷基和多氟烷基物质（PFAS）的发生和清除情况

IF 7.2 2区环境科学与生态学

Water Research X Pub Date : 2025-03-08 DOI: 10.1016/j.wroa.2025.100329

Jin-Kyu Kang , Min-Gyeong Kim , Jeong-Eun Oh

{"title":"Occurrence and removal of 42 legacy and emerging per- and polyfluoroalkyl substances (PFAS) in drinking water treatment plants in South Korea","authors":"Jin-Kyu Kang , Min-Gyeong Kim , Jeong-Eun Oh","doi":"10.1016/j.wroa.2025.100329","DOIUrl":"10.1016/j.wroa.2025.100329","url":null,"abstract":"<div><div>This study investigated 42 Per- and polyfluoroalkyl substances (PFAS) in raw and treated water from drinking water treatment plants in the Nakdong River basin. 22 PFAS were detected in both raw and treated water, especially 6:2 fluorotelomer carboxylic acid (6:2 FTCA), N-methyl perfluorooctanesulfonamidoethanol (N-MeFOSE), hexafluoropropylene oxide dimer acid (Gen-X) were identified for the first time in the raw water in South Korea. In raw water, PFAS concentrations ranged from 13.3 to 189 ng/L, with short-chain PFAS showing higher levels than long-chain PFAS. No significant difference in concentration was observed regardless of riverbank filtration. In treated water, 77.8 % of samples exceeded the MCL for PFOA (4 ng/L, US, EPA). The study assessed PFAS removal across various treatment processes and suggests the potential presence of additional precursors beyond those initially targeted. GAC showed increased removal efficiency with longer carbon chains, ranging from 1.0 ± 19.0 % for PFBA to 100 ± 0 % for PFDA. In contrast, pre-ozonation and ozonation were generally ineffective, with overall PFAS removal efficiencies of -8.1 ± 43.0 % and 6.1 ± 34.7 %, respectively. Chlorination also exhibited low removal efficiency, and in some cases, concentrations of PFHxS and PFOS increased post-treatment, suggesting the latent influence of precursor compounds. These findings highlight the need for further investigation into unidentified precursors and their role in PFAS transformation.</div></div>","PeriodicalId":52198,"journal":{"name":"Water Research X","volume":"29 ","pages":"Article 100329"},"PeriodicalIF":7.2,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrated social development on analyzing the distribution, risk and source apportionment of antibiotics pollution in mountainous rivers 综合社会发展分析山区河流抗生素污染分布、风险及来源分配

IF 7.2 2区环境科学与生态学

Water Research X Pub Date : 2025-03-01 DOI: 10.1016/j.wroa.2025.100327

Wei Fan , Minjie Yang , Ying Shao , Dongjun Shen , Liang Ao , Zhongli Chen

{"title":"Integrated social development on analyzing the distribution, risk and source apportionment of antibiotics pollution in mountainous rivers","authors":"Wei Fan , Minjie Yang , Ying Shao , Dongjun Shen , Liang Ao , Zhongli Chen","doi":"10.1016/j.wroa.2025.100327","DOIUrl":"10.1016/j.wroa.2025.100327","url":null,"abstract":"<div><div>Antibiotics, as the widespread drugs stimulate the evolution of antibiotic resistance, threatening human and ecosystem health worldwide. However, studies rarely conducted in rivers among the regional scale with diverse economic development, which limits the management efficient of antibiotic control. Therefore, we investigated the concentration, distribution, risk and source apportionment of 54 antibiotics in 9 mountainous rivers, where the economic social development divers among their watersheds in Chongqing, China. The results showed that the concentrations of antibiotics detected in surface water, effluent of wastewater treatment plants, hospital, livestock and aquaculture sewage were 0.13–290 ng/L, 2.17–590 ng/L, 6.58–2.16 × 10<sup>5</sup> ng/L, 4.5–7.4 × 10<sup>5</sup> ng/L and 4.41–7.49 × 10<sup>3</sup> ng/L, respectively. The order of total antibiotic concentrations along the investigated rivers was Laixi River > Changshou Lake > Longxi River > Fujiang River > Jialing River > Qiongjiang River > Yangtze River > Wujiang River > Qijiang River. The risk quotient indicates that ofloxacin and lincomycin exhibited high risk. Through Mantel test and correlation analysis screened antibiotics associated with anthropogenic factors. Municipal wastewater had a positive impact on QNs. The positive matrix factorization model was used to identify the main sources of antibiotics in surface water with special focus on the Longxi River, revealing the livestock and aquaculture were main contributions, respectively. The ToxPi method was employed to prioritize antibiotics in surface water, and seven compounds were recommended as priority chemicals of concern in the future. This work provides a valuable regional scale dataset of antibiotics in the mountainous rivers, which promises valuable insights for controlling antibiotic contamination.</div></div>","PeriodicalId":52198,"journal":{"name":"Water Research X","volume":"28 ","pages":"Article 100327"},"PeriodicalIF":7.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Upgrading waste activated sludge into valuable biosolids via an integrated biochemical approach 通过综合生化方法将废弃活性污泥升级为有价值的生物固体

IF 7.2 2区环境科学与生态学

Water Research X Pub Date : 2025-02-27 DOI: 10.1016/j.wroa.2025.100325

Xi Lu , Zhiyao Wang , Zheng Kong , Haoran Duan , Zhiqiang Zuo , Zhetai Hu , Min Zheng , Shihu Hu

{"title":"Upgrading waste activated sludge into valuable biosolids via an integrated biochemical approach","authors":"Xi Lu , Zhiyao Wang , Zheng Kong , Haoran Duan , Zhiqiang Zuo , Zhetai Hu , Min Zheng , Shihu Hu","doi":"10.1016/j.wroa.2025.100325","DOIUrl":"10.1016/j.wroa.2025.100325","url":null,"abstract":"<div><div>Sludge management is a significant challenge for water utilities worldwide. High costs are largely driven by poor digestibility and dewaterability, while elevated concentrations of pathogens and toxic metals limit the safe and beneficial reuse of sludge. This study proposes an innovative integrated biochemical method that concurrently enhances sludge digestibility, facilitates toxic metal removal, improves dewaterability, and achieves pathogen reduction. In a laboratory-scale aerobic sludge digester processing waste-activated sludge, in-situ sludge acidification was achieved within 35–40 days, reaching a pH of approximately 2.6. This acidification was driven by the natural cultivation of acid-tolerant ammonia-oxidizing bacteria (<em>Ca.</em> Nitrosoglobus), which generate protons by oxidizing ammonium released from the sludge. Sludge acidification resulted in significant improvements, including volatile solids (VS) destruction (49 ± 6 %), pathogen reduction (∼4 log reduction), enhanced dewaterability (demonstrated by three methods), and toxic metal solubilization. While most toxic metals were solubilized to meet the Grade A biosolid standard (the highest biosolids standard qualified for unrestricted and safe use), copper only met the Grade B standard. To address this, a low dose of nitrite (5 mg N/L) was added to the acidified sludge (pH 2.2, adjusted with a small amount of acid) for 5 h, successfully solubilizing copper and upgrading the sludge to Grade A standards. Overall, this study demonstrates the potential of <em>in-situ</em> sludge acidification combined with minimal nitrite and acid addition as an efficient approach for improving multiple aspects of sludge management.</div></div>","PeriodicalId":52198,"journal":{"name":"Water Research X","volume":"28 ","pages":"Article 100325"},"PeriodicalIF":7.2,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative analysis of synergistic effects of phosphorus enrichment and hydroxyapatite nucleation on anammox granular sludge 厌氧氨氧化颗粒污泥中磷富集与羟基磷灰石成核协同效应的对比分析

IF 7.2 2区环境科学与生态学

Water Research X Pub Date : 2025-02-27 DOI: 10.1016/j.wroa.2025.100326

Yanjun Zhu , Dong Li , Huiping Zeng , Sibo Fu , Yuliang Zhu , Jifang Zheng , Sen Yang , Songyue Li , Jie Zhang

{"title":"Comparative analysis of synergistic effects of phosphorus enrichment and hydroxyapatite nucleation on anammox granular sludge","authors":"Yanjun Zhu , Dong Li , Huiping Zeng , Sibo Fu , Yuliang Zhu , Jifang Zheng , Sen Yang , Songyue Li , Jie Zhang","doi":"10.1016/j.wroa.2025.100326","DOIUrl":"10.1016/j.wroa.2025.100326","url":null,"abstract":"<div><div>Combined nutrient removal and phosphorus recovery are pivotal for advancing sustainable wastewater treatment technologies. Despite the proven efficacy of anammox granular sludge systems in nutrient removal, the long-term structural development, microbial dynamics, and resource recovery potential of these systems remain insufficiently understood, particularly under municipal wastewater conditions at the microscopic level. Addressing this gap is critical to optimizing reactor performance and enhancing sustainability. In this study, we investigated the impact of phosphorus enrichment on granular sludge characteristics using two reactors. The phosphorus-free reactor (R1) facilitated the rapid formation of hollow granular sludge, with particle sizes growing rapidly—yet with significant variability—and total nitrogen (TN) removal efficiencies ranging between 74.86 % and 86.24 %. In contrast, the phosphorus-enriched reactor (R2) was supplemented to promote hydroxyapatite (HAP) nucleation, resulting in slower but more organized growth of dense granules with a narrower size distribution and consistently higher nitrogen removal efficiencies (75.17 %–91.97 %). Notably, phosphorus removal efficiency in R2 peaked when granules reached approximately 800 μm, attributable to HAP-mediated adsorption and precipitation. Furthermore, the relative abundance of key anammox bacteria, such as Candidatus Brocadia, increased dramatically from 1.28 % in R1 to 18.32 % in R2, while Denitratisoma also proliferated. Despite structural differences, similar amounts of floating sludge were observed in both reactors, likely due to gas entrapment and extracellular polymeric substances (EPS) production. These findings demonstrate that phosphorus enrichment not only enhances nitrogen removal and phosphorus recovery but also modulates microbial community composition and granule morphology.</div></div>","PeriodicalId":52198,"journal":{"name":"Water Research X","volume":"27 ","pages":"Article 100326"},"PeriodicalIF":7.2,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143576759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the process performance of comammox-like nitrospira dominant down-flow hanging sponge reactor with reduced nitrous oxide emissions 降低氧化亚氮排放的类comammos - nitrospira优势下流式悬浮海绵反应器工艺性能评价

IF 7.2 2区环境科学与生态学

Water Research X Pub Date : 2025-02-25 DOI: 10.1016/j.wroa.2025.100324

Sota Kabasawa , Takahiro Watari , Yuki Sato , Yuga Hirakata , Masashi Hatamoto , Tsutomu Okubo , Carols Lopez Vazquez , Jules B. van Lier , Takashi Yamaguchi

{"title":"Evaluation of the process performance of comammox-like nitrospira dominant down-flow hanging sponge reactor with reduced nitrous oxide emissions","authors":"Sota Kabasawa , Takahiro Watari , Yuki Sato , Yuga Hirakata , Masashi Hatamoto , Tsutomu Okubo , Carols Lopez Vazquez , Jules B. van Lier , Takashi Yamaguchi","doi":"10.1016/j.wroa.2025.100324","DOIUrl":"10.1016/j.wroa.2025.100324","url":null,"abstract":"<div><div>Nitrification/denitrification mitigates excess nitrogen in wastewater and reduces nutrient pollution in recipient surface waters but emits substantial amounts of nitrous oxide (N₂O). Complete ammonia-oxidizing (comammox) bacteria provide novel opportunities to mitigate N₂O emissions from wastewater treatment systems. In this study, a down-flow hanging sponge (DHS) reactor with low-strength ammonia-based synthetic wastewater was used to culture comammox bacteria, to study the microbial community structure, and to assess the nitrogen removal performance. The results showed a high NH<sub>4</sub><sup>+</sup>-N removal efficiency of 98 ± 4 % and complete nitrification during the entire experimental period. 16S rRNA gene sequencing and metagenomic analysis showed that comammox-like <em>Nitrospira</em> dominated the DHS-retained sludge, and that comammox-like <em>Nitrospira</em> and ammonia-oxidizing archaea may have coexisted symbiotically. The dissolved N₂O emissions per NH<sub>4</sub><sup>+</sup>-N removed from the DHS reactor were much lower than those from conventional activated sludge processes, indicating that the DHS reactor could be effective in reducing N₂O emissions during wastewater treatment.</div></div>","PeriodicalId":52198,"journal":{"name":"Water Research X","volume":"28 ","pages":"Article 100324"},"PeriodicalIF":7.2,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Making waves: Rethinking our mission for N2O emissions at WRRFs 掀起波澜：重新思考我们在水资源回收中心的一氧化二氮排放任务

IF 7.2 2区环境科学与生态学

Water Research X Pub Date : 2025-02-18 DOI: 10.1016/j.wroa.2025.100320

Leon Downing , McKenna Farmer , Bishav Bhattarai , Michael Penn , Joseph Kozak , Jonathan Grabowy , Fabrizio Sabba

{"title":"Making waves: Rethinking our mission for N2O emissions at WRRFs","authors":"Leon Downing , McKenna Farmer , Bishav Bhattarai , Michael Penn , Joseph Kozak , Jonathan Grabowy , Fabrizio Sabba","doi":"10.1016/j.wroa.2025.100320","DOIUrl":"10.1016/j.wroa.2025.100320","url":null,"abstract":"<div><div>Nitrous oxide (N<sub>2</sub>O) is a potent greenhouse gas with a global warming potential 273 times that of CO<sub>2</sub>, and it is a significant contributor to ozone depletion. Water resource recovery facilities (WRRFs) have been identified as a major source of N<sub>2</sub>O emissions, leading to significant research and policy efforts to mitigate these emissions. As WRRFs undertake these N<sub>2</sub>O mitigation efforts, important questions remain regarding the impact of more intensive nitrogen removal for pollution prevention and public health protection and how reactive nitrogen discharges are emitted as N<sub>2</sub>O in receiving waterways. To answer these questions, this perspective highlights the importance of balancing facility-scale emission factors to estimate N<sub>2</sub>O emissions from wastewater while considering the impacts of nitrogen if discharged to receiving water bodies. This perspective suggests more comprehensive approaches to manage N<sub>2</sub>O emissions, emphasizing the need to account for the reduction in N<sub>2</sub>O emissions achieved through nitrogen removal at WRRFs compared to direct discharge into receiving water bodies. By considering the overall impact of nitrogen from wastewater on N<sub>2</sub>O emissions from both WRRFs and receiving water bodies, WRRFs can reduce their impact on the environment while maintaining their important role in removing nitrogen from wastewater.</div></div>","PeriodicalId":52198,"journal":{"name":"Water Research X","volume":"28 ","pages":"Article 100320"},"PeriodicalIF":7.2,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New understanding of microbial growth cycle for efficient waste-activated sludge disposal by preserving microbial self-degradation activity during the decline phase 通过在衰退阶段保持微生物自降解活性，对有效处理废物活性污泥的微生物生长周期有了新的认识

IF 7.2 2区环境科学与生态学

Water Research X Pub Date : 2025-02-17 DOI: 10.1016/j.wroa.2025.100323

Xiqi Li , Aijie Wang , Zhe Yu , Hualin Wang , Hengzhi You , Jifei Xu , Jingyu Zhang , Wenzong Liu

{"title":"New understanding of microbial growth cycle for efficient waste-activated sludge disposal by preserving microbial self-degradation activity during the decline phase","authors":"Xiqi Li , Aijie Wang , Zhe Yu , Hualin Wang , Hengzhi You , Jifei Xu , Jingyu Zhang , Wenzong Liu","doi":"10.1016/j.wroa.2025.100323","DOIUrl":"10.1016/j.wroa.2025.100323","url":null,"abstract":"<div><div>Diverse pretreatment methods have been developed for cell-cracking and sludge denaturation to harvest pretreated sludge as the suitable fermentation substrate, but new inoculation is not always working quickly or adaptively for the pretreated sludge. This study established a sludge SDMP method by integrating RL and HSHC to fully use the enriched microorganisms with decomposing enzymes/abilities at the sludge decline phase for organic matters bioconversion. The SDMP method cracked EPS but preserved and enhanced the microbial viability and the activity of enzymes related to hydrolysis and acidifying. Then the VFAs production cycle of SDMP sludge was shortened by 36.25 % than alkaline pretreated sludge, and the yield reached 4482.19 mg COD/L in 3 days with the organic matter conversion rate of 369.36 mg COD/g VSS. Preserved and enriched sludge self-degradation microorganisms composed a critical part of the dominant community, including <em>Mycobacterium, norank_f__Pirellulaceae, IMCC26207, norank_f__JG30-KF-CM45</em>, and <em>Petrimonas</em>. The interaction network centered on them facilitated acidogenic metabolism by reinforcing pathways such as glycolysis, pyruvate metabolism, and the Stickland reaction in amino acid metabolism. This study provides new insights into developing microbial functions for recycling resources from sludge.</div></div>","PeriodicalId":52198,"journal":{"name":"Water Research X","volume":"27 ","pages":"Article 100323"},"PeriodicalIF":7.2,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Layer-by-layer synthesis of copper hexacyanoferrate on 3D-printed scaffolds for efficient ammonium recovery 在3d打印支架上逐层合成六氰高铁酸铜，以实现高效的铵回收

IF 7.2 2区环境科学与生态学

Water Research X Pub Date : 2025-02-16 DOI: 10.1016/j.wroa.2025.100322

Narges Dehbashi Nia , Bokseong Kim , Yuri Park , Yeo-Myeong Yun , Eveliina Repo , Yuhoon Hwang

{"title":"Layer-by-layer synthesis of copper hexacyanoferrate on 3D-printed scaffolds for efficient ammonium recovery","authors":"Narges Dehbashi Nia , Bokseong Kim , Yuri Park , Yeo-Myeong Yun , Eveliina Repo , Yuhoon Hwang","doi":"10.1016/j.wroa.2025.100322","DOIUrl":"10.1016/j.wroa.2025.100322","url":null,"abstract":"<div><div>Ammonium contamination in wastewater, which originates from various sources such as agriculture and livestock activities, poses significant environmental challenges while also serving as a valuable resource for recovery. Effective ammonium removal is essential for mitigating its impact on aquatic ecosystems, where it disrupts ecological balance and promotes toxic algal blooms. This study explores the potential of copper hexacyanoferrate (CuHCF), a widely recognized adsorbent among Prussian blue analogs (PBAs), for efficient ammonium adsorption due to its remarkable capacity and selectivity. CuHCF was immobilized on a three-dimensional (3D) printed scaffold using a layer-by-layer synthesis method, which significantly enhanced immobilization efficiency and adsorption performance compared to conventional single-layer methods. Analytical techniques, including Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), inductively coupled plasma mass spectrometry (ICP-MS), and thermogravimetric analysis (TGA), confirmed the introduction of carboxyl groups on the polylactic acid (PLA) scaffold through surface modification, enabling higher CuHCF loading. Adsorption tests revealed fast kinetics within 2 h, sustained adsorption performance for up to 10 days in continuous column experiments, and significant regeneration potential over five continuous cycles. These findings demonstrate the potential of the layer-by-layer synthesized CuHCF-immobilized filter for ammonium recovery from wastewater.</div></div>","PeriodicalId":52198,"journal":{"name":"Water Research X","volume":"28 ","pages":"Article 100322"},"PeriodicalIF":7.2,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Making waves: Generative artificial intelligence in water distribution networks: Opportunities and challenges 兴风作浪：供水网络中的生成式人工智能：机遇与挑战

IF 7.2 2区环境科学与生态学

Water Research X Pub Date : 2025-02-13 DOI: 10.1016/j.wroa.2025.100316

Ridwan Taiwo , Abdul-Mugis Yussif , Tarek Zayed

{"title":"Making waves: Generative artificial intelligence in water distribution networks: Opportunities and challenges","authors":"Ridwan Taiwo , Abdul-Mugis Yussif , Tarek Zayed","doi":"10.1016/j.wroa.2025.100316","DOIUrl":"10.1016/j.wroa.2025.100316","url":null,"abstract":"<div><div>Water distribution networks (WDNs) face increasing challenges from aging infrastructure, population growth, and climate change, necessitating innovative technological solutions. This study examines the integration of Generative Artificial Intelligence (GenAI) in WDNs, including both conventional and reclaimed water systems. Through a comprehensive analysis of current literature and emerging applications, the study identifies key opportunities in near-future applications focusing on enhancing information retrieval through advanced document processing, improving water quality management via real-time monitoring and visualization, implementing predictive maintenance strategies through pattern recognition, and optimizing real-time operational control through adaptive algorithms. Results also demonstrate that GenAI can transform WDN operations through advanced visualization, scenario generation, and adaptive optimization capabilities, particularly in far-future applications such as demand forecasting, emergency response, and network design optimization. The analysis reveals significant challenges, including data quality and availability issues, particularly in non-English speaking regions, scalability constraints in large-scale networks, the critical need for water professionals with hybrid expertise in both traditional engineering and AI systems, and complex regulatory requirements that vary significantly across the globe. The study also explores unique applications in reclaimed WDNs, particularly in quality control, treatment optimization, and stakeholder engagement. These findings provide water utilities, policymakers, and researchers with valuable insights for implementing GenAI technologies while balancing technological advancement with human expertise and social responsibility.</div></div>","PeriodicalId":52198,"journal":{"name":"Water Research X","volume":"28 ","pages":"Article 100316"},"PeriodicalIF":7.2,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lake dissolved organic matters seasonal variations is a main driver of N2O emission: In molecular insights by using FT-ICR MS 湖泊溶解有机质的季节变化是N2O排放的主要驱动因素：基于FT-ICR MS的分子洞察

IF 7.2 2区环境科学与生态学

Water Research X Pub Date : 2025-02-13 DOI: 10.1016/j.wroa.2025.100321

Zezheng Wang , Lu Li , Chengchao Liao , Min Deng , Yeerken Senbati , Yongxia Huang , Kang Song

{"title":"Lake dissolved organic matters seasonal variations is a main driver of N2O emission: In molecular insights by using FT-ICR MS","authors":"Zezheng Wang , Lu Li , Chengchao Liao , Min Deng , Yeerken Senbati , Yongxia Huang , Kang Song","doi":"10.1016/j.wroa.2025.100321","DOIUrl":"10.1016/j.wroa.2025.100321","url":null,"abstract":"<div><div>Anthropogenic activities have introduced substantial quantities of carbon and nitrogen into aquatic system, which are hotspots for nitrous oxide emissions and play multiple roles in the global biogeochemical cycle. We characterized the seasonal variation of DOM by employing a comprehensive approach incorporating absorption spectroscopy, excitation-emission matrix fluorescence and Fourier transform ion cyclotron resonance mass spectrometry (FT–ICR MS). Results revealed that DOM seasonal variation could be the main factor driven lake N<sub>2</sub>O emission alteration. In warm seasons, lakes are predominant with recalcitrant aromatic compounds DOM released by phytoplankton, such as highly unsaturated and phenolic compounds, polyphenols., and lignin, accompanied by low N<sub>2</sub>O concentrations (0.03±0.02 μmol/L). In cold seasons, bioavailable components (Aliphatic, Sugar-like, Peptide-like) are dominated in lakes, the increased abundance of S-containing compounds and low aromaticity compounds largely influenced by anthropogenic emissions, leads to elevated N<sub>2</sub>O concentrations (1.91±0.06 μmol/L). The DOM with high bioavailable components promotes sediment N<sub>2</sub>O production (<em>nir</em>/<em>nosZ (<sub>I+II)</sub>-</em>type denitrifiers) (<em>n</em> = 678). Recalcitrant DOM reduced sediment <em>nirK</em> and <em>nirS-</em>type denitrifiers, and increased <em>nosZ <sub>(I+II)</sub></em>-type denitrifiers, enhance the N<sub>2</sub>O reduction and led to a lower N<sub>2</sub>O emission. This study advances the understanding of the microbial mechanisms that DOM regulates N<sub>2</sub>O emissions in lakes.</div></div>","PeriodicalId":52198,"journal":{"name":"Water Research X","volume":"28 ","pages":"Article 100321"},"PeriodicalIF":7.2,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0