npj Clean Water最新文献

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Longitudinal study on the multifactorial public health risks associated with sewage reclamation 与污水再生利用相关的多因素公共卫生风险纵向研究
IF 10.4 1区 工程技术
npj Clean Water Pub Date : 2024-08-02 DOI: 10.1038/s41545-024-00365-y
Inés Girón-Guzmán, Santiago Sánchez-Alberola, Enric Cuevas-Ferrando, Irene Falcó, Azahara Díaz-Reolid, Pablo Puchades-Colera, Sandra Ballesteros, Alba Pérez-Cataluña, José María Coll, Eugenia Núñez, María José Fabra, Amparo López-Rubio, Gloria Sánchez
{"title":"Longitudinal study on the multifactorial public health risks associated with sewage reclamation","authors":"Inés Girón-Guzmán, Santiago Sánchez-Alberola, Enric Cuevas-Ferrando, Irene Falcó, Azahara Díaz-Reolid, Pablo Puchades-Colera, Sandra Ballesteros, Alba Pérez-Cataluña, José María Coll, Eugenia Núñez, María José Fabra, Amparo López-Rubio, Gloria Sánchez","doi":"10.1038/s41545-024-00365-y","DOIUrl":"10.1038/s41545-024-00365-y","url":null,"abstract":"This year-long research analyzed emerging risks in influent, effluent wastewaters and biosolids from six wastewater treatment plants in Spain’s Valencian Region. Specifically, it focused on human enteric and respiratory viruses, bacterial and viral faecal contamination indicators, extended-spectrum beta-lactamases-producing Escherichia coli, and antibiotic-resistance genes. Additionally, particles and microplastics in biosolid and wastewater samples were assessed. Human enteric viruses were prevalent in influent wastewater, with limited post-treatment reduction. Wastewater treatment effectively eliminated respiratory viruses, except for low levels of SARS-CoV-2 in effluent and biosolid samples, suggesting minimal public health risk. Antibiotic resistance genes and microplastics were persistently found in effluent and biosolids, thus indicating treatment inefficiencies and potential environmental dissemination. This multifaced research sheds light on diverse contaminants present after water reclamation, emphasizing the interconnectedness of human, animal, and environmental health in wastewater management. It underscores the need for a One Health approach to address the United Nations Sustainable Development Goals.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-15"},"PeriodicalIF":10.4,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00365-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141880137","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
Trans-membrane piezoelectric activation of peroxymonosulfate for effective control of waterborne antibiotic resistance dissemination 跨膜压电激活过氧单硫酸盐,有效控制水传播的抗生素耐药性传播
IF 10.4 1区 工程技术
npj Clean Water Pub Date : 2024-07-26 DOI: 10.1038/s41545-024-00351-4
Yang Yu, Lianyu Liu, Yiqiao Xie, Wei Huang, Hai Liu, Xiaotu Liu, Da Chen
{"title":"Trans-membrane piezoelectric activation of peroxymonosulfate for effective control of waterborne antibiotic resistance dissemination","authors":"Yang Yu, Lianyu Liu, Yiqiao Xie, Wei Huang, Hai Liu, Xiaotu Liu, Da Chen","doi":"10.1038/s41545-024-00351-4","DOIUrl":"10.1038/s41545-024-00351-4","url":null,"abstract":"Increasing prevalence of antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) constitutes an emerging water safety issue globally. However, the effectiveness of current water treatment techniques in the control of ARGs dissemination remains controversial. Here, we develop a dual-zone strategy based on piezoelectric membrane filtration to efficiently eliminate waterborne antibiotic resistance. Following complete ARB inactivation and effective ARGs reduction in the retentate near the membrane surface (zone 1), a subsequent trans-membrane process (zone 2) further promotes ARGs elimination in the permeate, due to boosted interactions between ARGs and reactive oxygen species (ROS) generated from piezoelectric peroxymonosulfate activation and minimized ROS competition from inactivated ARB within piezocatalytic channels. The abundance of ARGs was largely reduced to ~1.0 × 103 copies·mL−1 in the permeate from ~5.0 × 106 copies·mL−1 in the feed solution. The singlet oxygen (1O2) is demonstrated to be primarily responsible for ARB inactivation, while 1O2, hydroxyl radical (•OH), sulfate radical (SO4·−) and superoxide radical (·O2−) can all participate in ARGs degradation. Our work demonstrates that the piezoelectric membrane-based dual-zone strategy has great potential to control the risk of ARGs dissemination.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-9"},"PeriodicalIF":10.4,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00351-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141768506","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
Tuning polyamide membrane chemistry for enhanced desalination using Boc-protected ethylenediamine and its in situ Boc-deprotection 利用 Boc 保护乙二胺及其原位 Boc-脱保护调节聚酰胺膜化学性质以提高海水淡化效果
IF 10.4 1区 工程技术
npj Clean Water Pub Date : 2024-07-25 DOI: 10.1038/s41545-024-00362-1
Hilal Ahmad, Abdul Waheed, Fahad Ayesh Alharthi, Christopher Michael Fellows, Umair Baig, Isam H. Aljundi
{"title":"Tuning polyamide membrane chemistry for enhanced desalination using Boc-protected ethylenediamine and its in situ Boc-deprotection","authors":"Hilal Ahmad, Abdul Waheed, Fahad Ayesh Alharthi, Christopher Michael Fellows, Umair Baig, Isam H. Aljundi","doi":"10.1038/s41545-024-00362-1","DOIUrl":"10.1038/s41545-024-00362-1","url":null,"abstract":"The scarcity of freshwater resources, driven by rapid population growth and industrialization, underscores the urgent need for advanced desalination technologies. This research aims to meet this critical demand by enhancing the performance of polyamide membranes through innovative chemical tuning of the active layer. By strategically using Boc-protected ethylenediamine (EDA), we can precisely control the membrane’s surface properties. One amino group in EDA is protected with a Boc group, allowing the other to participate in the interfacial polymerization (IP) reaction with meta-phenylenediamine (MPD) and trimesoyl chloride (TMC). This inclusion of Boc-protected EDA enables in situ tuning of the active layer chemistry during polymerization. Subsequent removal of the Boc protection generates hydrophilic ammonium groups on the membrane surface, enhancing its desalination capabilities. As a result, three distinct membranes were fabricated and thoroughly characterized: MPD-TMC (control), MPD-TMC-EDA-Boc, and MPD-TMC-EDA-Deboc. At 20 bar and 2000 ppm NaCl feed, the MPD-TMC-EDA-Deboc membrane demonstrated superior desalination performance with a salt rejection of 98 ± 0.5% and a permeate flux of 25 L m−2 h−1; an increase of 25% compared to the control membrane. For the seawater nanofiltration (NF) permeate with a TDS of 33,700 ppm, a salt rejection of 97% and a permeate flux of 23 L m−2 h−1 was recorded at 20 bar. The MPD-TMC-EDA-Deboc membrane showed enhanced antifouling performance (95 ± 1% flux recovery) compared to the control MPD-TMC membrane with 93 ± 1% flux recovery. The Boc-protection/deprotection strategy demonstrated the high potential of this approach to significantly enhance the performance of polyamide membranes for desalination applications.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-13"},"PeriodicalIF":10.4,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00362-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141764110","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
Expanding access to water quality monitoring with the open-source WaterScope testing platform 利用开源 WaterScope 测试平台扩大水质监测范围
IF 10.4 1区 工程技术
npj Clean Water Pub Date : 2024-07-23 DOI: 10.1038/s41545-024-00357-y
Alicja Dabrowska, George R. Lewis, Minaleshewa Atlabachew, Susannah J. Salter, Cassi Henderson, Chang Ji, Annike Ehlers, Julian Stirling, Sophie Mower, Lara Allen, Elizabeth Lay, Kara Stuart, Lisa Appavou, Richard Bowman, Tianheng Zhao, Nalin Patel, Alexander Patto, Mark A. Holmes, Jeremy J. Baumberg, Sammy Mahdi
{"title":"Expanding access to water quality monitoring with the open-source WaterScope testing platform","authors":"Alicja Dabrowska, George R. Lewis, Minaleshewa Atlabachew, Susannah J. Salter, Cassi Henderson, Chang Ji, Annike Ehlers, Julian Stirling, Sophie Mower, Lara Allen, Elizabeth Lay, Kara Stuart, Lisa Appavou, Richard Bowman, Tianheng Zhao, Nalin Patel, Alexander Patto, Mark A. Holmes, Jeremy J. Baumberg, Sammy Mahdi","doi":"10.1038/s41545-024-00357-y","DOIUrl":"10.1038/s41545-024-00357-y","url":null,"abstract":"Increasing access to water quality tests in low-income communities is a crucial strategy toward achieving global water equality. Recent studies in the Water Sanitation and Hygiene (WASH) sector underscore the importance of addressing practical concerns in water testing, such as robustness and results communication. In response, we present the WaterScope testing kit; an open-source, validated platform for drinking water quality assessment. It modernises the testing process with the inclusion of a unique cartridge/slider mechanism, machine-learning-enhanced classification and full digitalisation of results. WaterScope’s equivalency to conventional methods for quantifying E. coli is established through extensive validation experiments in both laboratory and field environments. This versatile platform provides potential to expand its applications to test other bacteria, perform colorimetric assays, and analyse clinical samples such as blood/urine samples. We anticipate that the system’s ease-of-use, portability, affordability, robustness, and digital nature will accelerate progress toward global water equality.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-10"},"PeriodicalIF":10.4,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00357-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141755263","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 challenge of supporting and monitoring safe wastewater use in agriculture in LMIC 支持和监测低收入和中等收入国家农业安全使用废水所面临的挑战
IF 10.4 1区 工程技术
npj Clean Water Pub Date : 2024-07-23 DOI: 10.1038/s41545-024-00364-z
Pay Drechsel, James Bartram, Manzoor Qadir, Kate O. Medlicott
{"title":"The challenge of supporting and monitoring safe wastewater use in agriculture in LMIC","authors":"Pay Drechsel, James Bartram, Manzoor Qadir, Kate O. Medlicott","doi":"10.1038/s41545-024-00364-z","DOIUrl":"10.1038/s41545-024-00364-z","url":null,"abstract":"Unsafe water reuse in the informal irrigation sector dominates in the Global South and requires more attention to protect food safety and public health. Promoting formal wastewater use in conjunction with (usually constrained) investment in treatment capacities is not sufficient in LMIC. New approaches and indicators are needed across the formal and informal reuse sectors to increase food safety and monitor progress on safe reuse. Current reuse guidelines need to be updated with greater attention to policy, regulations, investments, and behavior change for a higher implementation potential.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-3"},"PeriodicalIF":10.4,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00364-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141755261","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
Unravelling the UV/H2O2 process using bioelectrochemically synthesized H2O2 to reuse waste nutrient solution 利用生物电化学合成的 H2O2 揭开紫外线/H2O2 过程的神秘面纱,重新利用废弃营养液
IF 10.4 1区 工程技术
npj Clean Water Pub Date : 2024-07-23 DOI: 10.1038/s41545-024-00363-0
Joo-Youn Nam, Hyunji Eom, Uijeong Han, Eunjin Jwa, Hyojeon Kim, SeungYeob Han, Seoktae Kang, Si-Kyung Cho
{"title":"Unravelling the UV/H2O2 process using bioelectrochemically synthesized H2O2 to reuse waste nutrient solution","authors":"Joo-Youn Nam, Hyunji Eom, Uijeong Han, Eunjin Jwa, Hyojeon Kim, SeungYeob Han, Seoktae Kang, Si-Kyung Cho","doi":"10.1038/s41545-024-00363-0","DOIUrl":"10.1038/s41545-024-00363-0","url":null,"abstract":"In this study, waste nutrient solution (WNS) was used as a catholyte in a bioelectrochemical cell to directly produce hydrogen peroxide (H2O2), after which the H2O2- containing WNS was integrated with the downstream UV oxidation process to meet quality standards for reuse. The generated current in the bioelectrochemical cell was successfully utilized at the cathode to produce H2O2 in WNS using a two-electron oxygen reduction reaction with different reaction times. The cathodic reaction time with the highest H2O2 production (504 ± 5.2 mg l−1) was 48 h, followed by that obtained from 24 h (368 ± 4.1 mg l−1), 12 h (158.8 ± 2.4 mg l−1), and 6 h (121.1 ± 4.1 mg l−1) reaction times. During H2O2 generation, calcium, magnesium, and phosphate in the WNS were recovered in the form of precipitates under alkaline conditions. The H2O2-containing WNS was further treated with different UV doses. After UV/H2O2 treatment, excitation-emission matrix and molecular weight distribution analyses demonstrated that aromatic compounds were reduced. Moreover, the gene expressions of sul1 (up to 95.65%), tetG (up to 93.88%), and aadA (up to 95.32%) were clearly downregulated compared with those of a control sample. Finally, a high disinfection efficiency was achieved with higher UV doses, resulting in successful seed germination. Thus, our results indicate that the developed method can be a promising process for reusing WNS in hydroponic systems.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-9"},"PeriodicalIF":10.4,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00363-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141755262","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
Lifetime optimisation of integrated thermally and electrically driven solar desalination plants 热电一体化太阳能海水淡化设备的寿命优化
IF 10.4 1区 工程技术
npj Clean Water Pub Date : 2024-07-16 DOI: 10.1038/s41545-024-00335-4
Benedict Winchester, Gan Huang, Hamish Beath, Philip Sandwell, Jiajun Cen, Jenny Nelson, Christos N. Markides
{"title":"Lifetime optimisation of integrated thermally and electrically driven solar desalination plants","authors":"Benedict Winchester, Gan Huang, Hamish Beath, Philip Sandwell, Jiajun Cen, Jenny Nelson, Christos N. Markides","doi":"10.1038/s41545-024-00335-4","DOIUrl":"10.1038/s41545-024-00335-4","url":null,"abstract":"We compare the performance of photovoltaic (PV), flat-plate and evacuated-tube solar-thermal (ST), and hybrid photovoltaic-thermal (PV-T) collectors to meet the energy demands of multi-effect distillation (MED) desalination plants across four locations. We consider three scales: 1700 m3day−1, 120 m3day−1 and 3 m3day−1. We find a strong dependence of the capacity and configuration of the solar collectors on both the cost of sourcing electricity from the grid and the specific collector employed. We find specific costs as low as 7.8, 3.4 and 3.7 USDm−3 for the three plant capacities. We find that solar-driven systems optimised for the lowest specific cost result in CO2eq emissions equal to, or higher than, those from grid-driven reverse osmosis (RO) and in line with PV-RO. This highlights the need to consider the environmental footprint of these systems to ensure that desalination is in line with the United Nations’ Sustainable Development Goal 6.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-15"},"PeriodicalIF":10.4,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00335-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141625033","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
Internal pipe corrosion assessment method in water distribution system using ultrasound and convolutional neural networks 利用超声波和卷积神经网络评估输水系统内部管道腐蚀情况的方法
IF 10.4 1区 工程技术
npj Clean Water Pub Date : 2024-07-13 DOI: 10.1038/s41545-024-00358-x
Yeongho Sung, Hyeon-Ju Jeon, Daehun Kim, Min-Seo Kim, Jaeyeop Choi, Hwan Ryul Jo, Junghwan Oh, O-Joun Lee, Hae Gyun Lim
{"title":"Internal pipe corrosion assessment method in water distribution system using ultrasound and convolutional neural networks","authors":"Yeongho Sung, Hyeon-Ju Jeon, Daehun Kim, Min-Seo Kim, Jaeyeop Choi, Hwan Ryul Jo, Junghwan Oh, O-Joun Lee, Hae Gyun Lim","doi":"10.1038/s41545-024-00358-x","DOIUrl":"10.1038/s41545-024-00358-x","url":null,"abstract":"Internal pipe corrosion within water distribution systems leads to iron oxide deposits on pipe walls, potentially contaminating the water supply. Consuming iron oxide-contaminated water can cause significant health issues such as gastrointestinal infections, dermatological problems, and lymph node complications. Therefore, non-destructive and continuous monitoring of pipe corrosion is imperative for water sustainability initiatives. This study introduces a dual-mode methodology utilizing advanced ultrasound technology and convolutional neural networks (CNN) to quantify pipe corrosion. Scanning acoustic microscopy (SAM) employs high-frequency ultrasound to generate high-resolution images of pipe thickness, indicating iron oxide accumulation. SAM also captures internal pipe data to measure iron oxide concentration in the water. This data, analyzed by CNN, achieves an impressive 95% accuracy. This dual-mode system effectively assesses both the extent of pipe corrosion and water contamination, exemplifying the successful integration of SAM and CNN for precise and reliable monitoring.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-10"},"PeriodicalIF":10.4,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00358-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141608130","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
Effect of different MoS2 morphologies on the formation and performance of adsorptive-catalytic nanocomposite membranes 不同 MoS2 形貌对吸附催化纳米复合膜的形成和性能的影响
IF 10.4 1区 工程技术
npj Clean Water Pub Date : 2024-07-13 DOI: 10.1038/s41545-024-00360-3
Delal E. Al Momani, Fathima Arshad, Inas Taha, Dalaver H. Anjum, Linda Zou
{"title":"Effect of different MoS2 morphologies on the formation and performance of adsorptive-catalytic nanocomposite membranes","authors":"Delal E. Al Momani, Fathima Arshad, Inas Taha, Dalaver H. Anjum, Linda Zou","doi":"10.1038/s41545-024-00360-3","DOIUrl":"10.1038/s41545-024-00360-3","url":null,"abstract":"This study synthesized three MoS₂ morphologies—nanospheres, nanoplatelets, and nanosheets—under varied conditions and incorporated them into chitosan membranes. TEM confirmed unique morphologies and crystallinity. Clean water flux showed that the nanoplatelet (P-CM) membrane had the highest flux due to higher porosity. The P-CM membrane excelled in removing Mn²⁺ and Zn²⁺ ions, achieving 93.0 ± 0.5% and 90.4 ± 1.5% removal, outperforming membranes with nanospheres (S-CM) and nanosheets (T-CM). Its superior performance is attributed to thicker nanoplatelets forming more water channels. The MoS₂‘s tri-layered structure generated reactive oxygen species (ROS) via H₂O₂ catalysis, contributing to enhanced heavy metal removal. These adsorptive-catalytic membranes combine adsorption with catalytic decomposition of heavy metals, highlighting the work’s novelty and superior performance. The membranes demonstrated excellent flux recovery and reusability (96.0 ± 0.5% for P-CM) after chemical cleaning. The findings emphasize the impact of nanomaterial morphologies on membrane performance in water treatment and environmental remediation.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-12"},"PeriodicalIF":10.4,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00360-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141608135","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
Molecular weight insight into critical component contributing to reverse osmosis membrane fouling in wastewater reclamation 通过分子量深入了解废水再生中造成反渗透膜污垢的关键成分
IF 10.4 1区 工程技术
npj Clean Water Pub Date : 2024-07-12 DOI: 10.1038/s41545-024-00359-w
Yuan Bai, Yinhu Wu, Ziwei Zhang, Yu Mao, Ruining Wang, Xin Tong, Song Xue, Haobin Wang, Hongying Hu
{"title":"Molecular weight insight into critical component contributing to reverse osmosis membrane fouling in wastewater reclamation","authors":"Yuan Bai, Yinhu Wu, Ziwei Zhang, Yu Mao, Ruining Wang, Xin Tong, Song Xue, Haobin Wang, Hongying Hu","doi":"10.1038/s41545-024-00359-w","DOIUrl":"10.1038/s41545-024-00359-w","url":null,"abstract":"Molecular weight (MW) of organics was one of the important factors influencing membrane fouling propensity. This study identified critical foulants of reverse osmosis (RO) membranes in reclaimed water by MW fractionation. MW > 10 kDa component was identified as the critical fouling contributor (CFC) in secondary effluent (SE), which accounted for only 13 ± 5% of dissolved organic carbon (DOC) but contributed to 86 ± 11% of flux decline. Throughout 12-month monitoring, SE and MW > 10 kDa component showed a similar fouling variation tendency: apparently higher fouling potential in winter and lower in summer, while MW < 10 kDa component presented minor fouling changes. Morphology of membrane fouled by CFC characterized a smooth and thick foulant layer on membrane surface. CFC was mainly composed of proteins and polysaccharides, and a protein-polysaccharide-protein “sandwich” fouling layer structure was preferentially formed on membrane surface. extended Derjaguin–Landau-Verwey–Overbeek (xDLVO) analysis demonstrated that strong attractive interactions between CFC and membrane surface dominated the fouling process. Furthermore, computational fluid dynamics (CFD) simulation revealed strong filtration resistance of CFC, confirming its significant fouling potential. Dual effects including attractive interactions and advantageous ridge-and-valley surface appearance accounted for the significant fouling propensity of MW > 10 kDa component and glean valuable insights into RO fouling mechanisms of reclaimed water in practical application.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-12"},"PeriodicalIF":10.4,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00359-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141602769","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
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