npj Clean Water最新文献_第9页

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

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

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

Data driven multiple objective optimization of AAO process towards wastewater effluent biological toxicity reduction 数据驱动多目标优化 AAO 工艺，降低废水生物毒性

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-07-12 DOI: 10.1038/s41545-024-00361-2

Jie Hu, Ran Yin, Jinfeng Wang, Hongqiang Ren

{"title":"Data driven multiple objective optimization of AAO process towards wastewater effluent biological toxicity reduction","authors":"Jie Hu, Ran Yin, Jinfeng Wang, Hongqiang Ren","doi":"10.1038/s41545-024-00361-2","DOIUrl":"10.1038/s41545-024-00361-2","url":null,"abstract":"While the anaerobic-anoxic-oxic (AAO) process is the most widely applied biological wastewater treatment process in municipal wastewater treatment plants (WWTPs), it struggles to meet the increasing demands on biological toxicity control of the treated effluent. To tackle this challenge, this study develops machine learning (ML)-based models for optimizing the AAO treatment process towards improving its toxicity reduction efficacy for the effluent. The water quality parameters, treatment process parameters, and biological toxicity information (based on the nematode bioassay) of the effluent collected from 122 WWTPs in China are used to train the models. The validated models accurately predict the effluent’s quality parameters (average R2 = 0.81) and the biological toxicity reduction ratio of treatment process (R2 = 0.86). To further improve the toxicity reduction, we developed a multiple objective optimization framework to optimize the AAO process via unit process recombination. In the short-range unit combination, the toxicity reduction ratio of the four-unit combined processes (up to 79.8% of anaerobic-aerobic-anaerobic-aerobic) is significantly higher than others. After optimization, it helps to improve the average toxicity reduction efficacy of 122 WWTPs from 48.6% to 70.7%, with a maximum of 87.5%. The methodologies and findings derived from this work are expected to provide the foundation for the optimization, expansion, and technical transformation of biological wastewater treatment in WWTPs.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-11"},"PeriodicalIF":10.4,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00361-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597382","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

Underwater light source changes nitrogen and phosphorus removal pathways by Vallisneria spinulosa Yan growth system 水下光源改变鹅掌楸(Vallisneria spinulosa Yan)生长系统的脱氮除磷途径

IF 10.4 1区工程技术

npj Clean Water Pub Date : 2024-07-11 DOI: 10.1038/s41545-024-00354-1

Jinshan Zhao, Xiaolin Zhou, Chunzhen Fan, Zhiquan Wang, Zhan Jin, Ke Bei, Xiangyong Zheng, Min Zhao, Suqing Wu

{"title":"Underwater light source changes nitrogen and phosphorus removal pathways by Vallisneria spinulosa Yan growth system","authors":"Jinshan Zhao, Xiaolin Zhou, Chunzhen Fan, Zhiquan Wang, Zhan Jin, Ke Bei, Xiangyong Zheng, Min Zhao, Suqing Wu","doi":"10.1038/s41545-024-00354-1","DOIUrl":"10.1038/s41545-024-00354-1","url":null,"abstract":"Vallisneria spinulosa Yan (V.spinulosa Yan) with good ability of water purification is often used for ecological restoration of polluted water bodies. However, it is difficult to survive in turbid water bodies due to the low lighting condition. This study explored the feasibility of introducing artificial underwater light source into water bodies with high turbidity to strengthen the water restoration by V.spinulosa Yan. Addition of underwater light source promoted the clonal reproduction ability of V.spinulosa Yan, thus enhancing the removal loads of total nitrogen (TN), total phosphorus (TP), and nitrate nitrogen ( $${mathrm{NO}}^{-}_{3}{mbox{-}}{mathrm{N}}$$ ) by 1.60–3.43 × 10−2, 1.49–3.49 × 10−3, and 0.80–2.06 × 10−2 g m−2 d−1, respectively. Underwater light source significantly reduced the abundance of microbial community on V.spinulosa Yan leaves, as well as most nitrifying bacteria (Nitrosomonadaceae) and denitrifying bacteria (Nitrospira, Comamonadaceae, and Rhodocyclaceae) in the system. But the attachment of some Cyanophyta (Chloroplast and Cyanobacteria) and Photosynthetic bacteria (Rhodobacter) onto the leaves and the growth of Methyloligellaceae in water and sediments were promoted. Nitrogen and phosphorus removal by the growth system of V.spinulosa Yan without underwater light source mainly depended on the biological processes by functional bacteria, while the absorption and co-assimilation effect of V.spinulosa Yan with underwater light source.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-12"},"PeriodicalIF":10.4,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00354-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597206","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