npj Clean Water最新文献_第10页

Enhanced photocatalytic performance of a rGO-Ca2Fe2O5 nanocomposite for photodegradation of emergent pollutants 增强 rGO-Ca2Fe2O5 纳米复合材料的光催化性能，用于光降解突发污染物

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-05-17 DOI: 10.1038/s41545-024-00334-5

Durga Sankar Vavilapalli, Leiqiang Qin, Justinas Palisaitis, Johanna Rosen

{"title":"Enhanced photocatalytic performance of a rGO-Ca2Fe2O5 nanocomposite for photodegradation of emergent pollutants","authors":"Durga Sankar Vavilapalli, Leiqiang Qin, Justinas Palisaitis, Johanna Rosen","doi":"10.1038/s41545-024-00334-5","DOIUrl":"10.1038/s41545-024-00334-5","url":null,"abstract":"In this study, a simple thermal reduction process is used to synthesize a rGO-Ca2Fe2O5 (rGO-CFO) nanocomposite, with the morphological and optical characteristics of the CFO nanomaterial being modified by the rGO incorporation. The interface between rGO nanosheets and CFO nanoparticles facilitates efficient charge separation and resulting transfer of photogenerated charge carriers across the rGO nanosheets, demonstrated from photoluminescence and Mott-Schottky tests. Compared to CFO (2.1 eV), rGO-CFO has a reduced band gap energy of 1.9 eV. As synthesized nanocomposites were initially optimized and utilized for photodegradation of organic effluent Methylene blue (MB). An addition of 5 wt% rGO to the CFO demonstrated an improved photodegradation efficiency (97%) compared to bare CFO (72%). An active species trapping experiment was used to assess the MB photodegradation mechanism. The results demonstrate that hydroxyl radicals and holes are the major active species involved in photodegradation. The optimized composition (5rGO-CFO) was further tested for degradation of Bisphenol-A and Tetracycline (antibiotic). Altogether, these investigations show that the rGO-CFO is a highly efficient photocatalyst that can be used to remediate emerging contaminants in sunlight.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-10"},"PeriodicalIF":11.4,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00334-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140954194","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

Assessing the suitability of desalination techniques for hydraulic barriers 评估海水淡化技术对水力障碍的适用性

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-05-15 DOI: 10.1038/s41545-024-00331-8

Hanna Rosentreter, Marc Walther, André Lerch

{"title":"Assessing the suitability of desalination techniques for hydraulic barriers","authors":"Hanna Rosentreter, Marc Walther, André Lerch","doi":"10.1038/s41545-024-00331-8","DOIUrl":"10.1038/s41545-024-00331-8","url":null,"abstract":"Seawater intrusion is a worldwide increasing challenge, which lowers the freshwater availability by salination of fresh groundwater resources in coastal areas. The abstraction-desalination-recharge (ADR) methodology can combat seawater intrusion, whereby desalination is hereby the key factor for the overall efficiency of aquifer remediation. Which desalination technique is suitable within ADR depends on several factors and was not discussed before. We use a multi-criteria decision analysis and cost analysis to compare nanofiltration, reverse osmosis, electrodialysis, and (membrane) capacitive deionization and show for three case scenarios which desalination technique is most suitable within ADR. Overall, electrodialysis, nanofiltration, and reverse osmosis have shown the best utility value for saline groundwater salinity of 1–10 g L−1, whereby electrodialysis is more suitable for lower salinities. The lowest desalination costs are calculated for nanofiltration and reverse osmosis with 0.3–0.6 € m−3 depending on specific energy costs. Even capacitive deionisation can be a suitable alternative for low, slightly saline groundwater (1 g L−1) if the technology readiness level and a lifetime of electrodes increase and material costs decrease. These new insights provide a data analysis, costs, and decision support for desalination which are needed for the holistic approach to counteract seawater intrusion.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-9"},"PeriodicalIF":11.4,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00331-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140924953","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

Reusable and effective polyacrylic membranes for mecoprop and bentazon extractions 可重复使用的高效聚丙烯膜，用于麦草畏和苯达松萃取

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-05-14 DOI: 10.1038/s41545-024-00328-3

Gianluca Utzeri, José Carlos Guirado-Moreno, Tânia F. G. G. Cova, Alberto A. A. C. Pais, Luis A. E. Batista De Carvalho, Saturnino Ibeas, José M. García, Artur J. M. Valente, Saúl Vallejos

{"title":"Reusable and effective polyacrylic membranes for mecoprop and bentazon extractions","authors":"Gianluca Utzeri, José Carlos Guirado-Moreno, Tânia F. G. G. Cova, Alberto A. A. C. Pais, Luis A. E. Batista De Carvalho, Saturnino Ibeas, José M. García, Artur J. M. Valente, Saúl Vallejos","doi":"10.1038/s41545-024-00328-3","DOIUrl":"10.1038/s41545-024-00328-3","url":null,"abstract":"This study introduces reusable polyacrylic membranes, fabricated from commercially available monomers (1-vinyl-2-pyrrolidone and methylmethacrylate), as a promising approach for pesticide extraction. These membranes effectively remove the commonly used herbicides mecoprop (RE ≈ 99%) and bentazon (RE ≈ 95%) at low concentrations, which pose water contamination risks due to their water-soluble properties and leaf-level sorption. The membranes exhibit excellent manageability and resistance, allowing for safe handling without personal protective equipment. Additionally, the material is environmentally friendly and can be washed and reused for at least 4 cycles without a significant decrease in performance. Characterization techniques, including NMR, TGA, DSC, mechanical testing, N2 adsorption, and FTIR analysis, were used to investigate properties and assess the influence of the polymeric composition. The study focused on examining the lateral charged aminoethyl groups, which play a crucial role in sorbent-sorbate interactions. Sorption kinetics, isotherms, and permeation studies provided insights into the removal mechanism, efficiency, and permeability coefficients, revealing hydrophobic–hydrophobic interactions between the pesticides and the polymer. Molecular dynamics simulations revealed a scorpion-like conformation of the macromolecular chains surrounding the pesticides. These findings support the hydrophobic nature of the extraction mechanism and highlight the significant role of charged aminoethyl groups in facilitating this process.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-13"},"PeriodicalIF":11.4,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00328-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140919377","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

Development of catalytic zero-valent iron incorporated PAN catalytic film for efficient degradation of organic matters 开发用于高效降解有机物的催化零价铁 PAN 催化膜

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-05-13 DOI: 10.1038/s41545-024-00333-6

Yi Yang, Haowen Lin, Yuxi Long, Ying Mei, J. Paul Chen

引用次数: 0

Tracing microplastic sources in urban water bodies combining their diversity, fragmentation and stability 结合微塑料的多样性、破碎性和稳定性，追踪城市水体中微塑料的来源

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-05-06 DOI: 10.1038/s41545-024-00329-2

Jinqiong Niu, Dongyu Xu, Wenqiang Wu, Bo Gao

{"title":"Tracing microplastic sources in urban water bodies combining their diversity, fragmentation and stability","authors":"Jinqiong Niu, Dongyu Xu, Wenqiang Wu, Bo Gao","doi":"10.1038/s41545-024-00329-2","DOIUrl":"10.1038/s41545-024-00329-2","url":null,"abstract":"Tracing the sources of microplastics (MPs) across various environmental media is currently facing significant challenges due to their complex transportable features. In this study, we conducted a comprehensive identification of MP sources in Beijing water bodies by combining MP diversity and the conditional fragmentation model, thoroughly considering local multiple sources. The resemblance in MP community compositions implied shared or similar sources in rivers and lakes, and the sources were assorted and equivalent based on the high diversity of MPs. The conditional fragmentation model can act as a proxy of fragmentation characteristics of MPs. According to the model, suburban sewage, soils, and dry and wet deposition constituted significant sources of MPs in the rivers and lakes of Beijing. The extremely high abundance of MPs (520,000 items·m−3) in suburban sewage also confirmed it as a potential source. For MPs with different polymer types and morphologies, non-fibrous polypropylene (PP) was primarily controlled by soils, whereas the contribution of sewage sludge to fibrous polyethylene terephthalate (PET) was notable. Our study provides insights for more accurate source apportionment and contributes to a better understanding of MP fate in urban environment.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-9"},"PeriodicalIF":11.4,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00329-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140842593","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

Investigation of scaling inhibition and biofouling potential of different molecular weight fractions of a PAA antiscalant 不同分子量馏分的 PAA 防垢剂的阻垢和生物污染潜力研究

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-05-06 DOI: 10.1038/s41545-024-00332-7

S. A. Kaushik, D. Armbruster, J. Dittmer, D. Bruniecka-Sulewski, B. Wendler, M. Ernst

{"title":"Investigation of scaling inhibition and biofouling potential of different molecular weight fractions of a PAA antiscalant","authors":"S. A. Kaushik, D. Armbruster, J. Dittmer, D. Bruniecka-Sulewski, B. Wendler, M. Ernst","doi":"10.1038/s41545-024-00332-7","DOIUrl":"10.1038/s41545-024-00332-7","url":null,"abstract":"This study investigates the scale inhibition performance of a commercial polyacrylic acid-based (PAA) antiscalant used for drinking water production and its molecular weight fractions (≤ 500 Da, ≥ 500 Da). The investigated antiscalant is used to prevent sulfate and carbonate scaling in treatment of drinking water sources by reverse osmosis or nanofiltration (RO/NF). Based on two complementary tests involving determination of induction time in a batch test and rate of flux decline in a lab-scale RO/NF plant, concordant results were obtained, proving that the overall performance of commercial PAA was controlled almost entirely by the higher molecular weight fraction. The low molecular weight fraction, which is potentially more permeable through the NF/RO membrane, showed poor inhibition against both sulfate and carbonate scalants. Furthermore, measurements on the assimilable organic carbon (AOC) by flow cytometry reveals that the low molecular weight PAA fraction has low biological stability, as its potential transport into the permeate of a NF270 nanofiltration membrane was inferred by elevated AOC values in the NF-permeate. These results are crucial information for water utilities, plant engineering, regulatory bodies and public authorities with respect to the possible operation of RO/NF especially in drinking water production.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-7"},"PeriodicalIF":11.4,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00332-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140842588","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-risk clones of Pseudomonas aeruginosa contaminate the drinking water networks of French cities 铜绿假单胞菌的高风险克隆污染了法国城市的饮用水网络

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-05-04 DOI: 10.1038/s41545-024-00323-8

Ani Horikian, Audrey Jeanvoine, Abdallah Amarache, Morgane Tourtet, Jérôme Ory, Hélène Boulestreau, Nathalie Van der Mee Marquet, Nadine Lemaitre, Matthieu Eveillard, Didier Lepelletier, Xavier Bertrand, Benoît Valot, Didier Hocquet

{"title":"High-risk clones of Pseudomonas aeruginosa contaminate the drinking water networks of French cities","authors":"Ani Horikian, Audrey Jeanvoine, Abdallah Amarache, Morgane Tourtet, Jérôme Ory, Hélène Boulestreau, Nathalie Van der Mee Marquet, Nadine Lemaitre, Matthieu Eveillard, Didier Lepelletier, Xavier Bertrand, Benoît Valot, Didier Hocquet","doi":"10.1038/s41545-024-00323-8","DOIUrl":"10.1038/s41545-024-00323-8","url":null,"abstract":"Pseudomonas aeruginosa is a major opportunistic pathogen responsible for severe infections in immunocompromised patients. The contamination of drinking water networks (DWNs) with this pathogen is underestimated, as it is mostly in the state of persister cells undetected by the recommended monitoring technique. We collected water samples from eight cities distant from each other and searched for P. aeruginosa using a culture-based method that resuscitates persister cells. The genomes of isolates were sequenced. Five DWNs of the eight tested (62.5%) were contaminated with P. aeruginosa, of which four were contaminated with high-risk clones (ST308, ST395). Surprisingly, the ST308 isolates retrieved from the four independent and distant DWNs were clonal. Most P. aeruginosa isolates shared a genomic island conferring tolerance to copper-ions. The population structure of the collection may result from both a common source of contamination by plumbing supplies and the selection of clones sharing genetic elements that presumably aided their propagation in DWNs.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-8"},"PeriodicalIF":11.4,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00323-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140826334","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

Synchronization of Ti3C2 MXene/Fe3+ with sodium persulfate for the degradation of reactive dyes Ti3C2 MXene/Fe3+ 与过硫酸钠同步降解活性染料

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-04-26 DOI: 10.1038/s41545-024-00330-9

Wanxin Li, Dawu Shu, Fangfang An, Ruigang Liu, Juchuan Shan, Bo Han, Shaolei Cao

引用次数: 0

Fouling-resistant reverse osmosis membranes grafted with 2-aminoethanethiol having a low interaction energy with charged foulants 与带电污物相互作用能低的 2-氨基乙硫醇接枝的抗污反渗透膜

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-04-18 DOI: 10.1038/s41545-024-00326-5

Jun Xiao, Shuang Hao, Yiwen Qin, Pengfei Qi, Zhaoqian Zhang, Yunxia Hu

{"title":"Fouling-resistant reverse osmosis membranes grafted with 2-aminoethanethiol having a low interaction energy with charged foulants","authors":"Jun Xiao, Shuang Hao, Yiwen Qin, Pengfei Qi, Zhaoqian Zhang, Yunxia Hu","doi":"10.1038/s41545-024-00326-5","DOIUrl":"10.1038/s41545-024-00326-5","url":null,"abstract":"Many fouling-resistant materials have been grafted or coated on the RO membrane surface for fouling-resistance. However, these modified RO membranes still exhibit a fast flux drop towards small charged organic foulants. Herein, we creatively use the quantum chemistry method to screen the thiol group having a close to zero interaction energy with small charged organic foulants. Thus, we selected a small molecule of 2-aminoethanethiol (AET) having a fouling-resistant thiol group and a reactive amine group for RO membrane surface modification. The water permeance of the AET-grafted RO membrane increases from 2.6 ± 0.1 L m−2 h−1 bar−1 to 3.2 ± 0.05 L m−2 h−1 bar−1, 23% higher than that of the pristine membrane. Moreover, the AET-grafted RO membrane exhibits excellent fouling resistance against charged surfactants. Our study offers insights on the design of fouling-resistant molecules for antifouling surface modification of RO membranes towards small charged organic foulants.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-9"},"PeriodicalIF":11.4,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00326-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140619849","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

Geospatial investigation on self-purification capacity of river Estuaries in the Caspian region: reducing heavy metals pollution 里海地区河口自净能力的地理空间调查：减少重金属污染

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-04-15 DOI: 10.1038/s41545-024-00327-4

Ali Marefat, Soheil Asgari, Reza Badpa, Mina Jahanirad, Masoud Sagheb Molaei, Abdolreza Karbassi

{"title":"Geospatial investigation on self-purification capacity of river Estuaries in the Caspian region: reducing heavy metals pollution","authors":"Ali Marefat, Soheil Asgari, Reza Badpa, Mina Jahanirad, Masoud Sagheb Molaei, Abdolreza Karbassi","doi":"10.1038/s41545-024-00327-4","DOIUrl":"10.1038/s41545-024-00327-4","url":null,"abstract":"In today’s context, the adoption of sustainable wastewater treatment methods is crucial. River estuaries have the potential to offer an economically viable and environmentally friendly solution for wastewater treatment through the flocculation of pollutants. This study investigates the role of river estuaries flowing into the southern part of the Caspian Sea in the treatment of heavy metals. Two sets of experiments were designed for this purpose. The first set involved adjusting a series of discrete aquaria in various salinity regimes, while the second set utilized only one aquarium. The results from the first set indicate the capacity of the studied estuaries to remove heavy metals through the flocculation process in the following order: Zn (70%) > Mn (60%) > Cu (49%) > Pb (24%) > Ni (19%). However, the removal rates in the second set were reduced as follows: Zn (57%) > Mn (56%) > Cu (40%) > Pb (20%) > Ni (17%). It was observed that the flocculation process exhibits an unstable nature. Furthermore, the findings reveal that heavy metals flocculation primarily occurs upstream of the estuary. However, instability in the flocculation process occurs downstream, where water parameters undergo drastic changes. Statistical analyses indicate that an increase in pH plays a significant role in the destabilization of flocs. Conversely, the initial concentration of heavy metals, dissolved oxygen, and redox potential have a positive impact on the flocculation process.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":" ","pages":"1-9"},"PeriodicalIF":11.4,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00327-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140553066","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