npj Clean Water最新文献_第2页

Natural and anthropogenic imprints on seasonal river water quality trends across China 自然和人为因素对中国季节性河流水质趋势的影响

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2025-06-02 DOI: 10.1038/s41545-025-00481-3

Haoran Zhang, Huihang Sun, Jiarong Li, Yuelei Li, Luyu Zhang, Ruikun Zhao, Xiangang Hu, Nanqi Ren, Yu Tian

{"title":"Natural and anthropogenic imprints on seasonal river water quality trends across China","authors":"Haoran Zhang, Huihang Sun, Jiarong Li, Yuelei Li, Luyu Zhang, Ruikun Zhao, Xiangang Hu, Nanqi Ren, Yu Tian","doi":"10.1038/s41545-025-00481-3","DOIUrl":"https://doi.org/10.1038/s41545-025-00481-3","url":null,"abstract":"Climate change and human activities have redefined seasonal river water quality patterns, yet their respective impacts remain unclear. Here, we propose a novel trend-based metric, the T-NM index, to isolate asymmetric human amplification and suppression effects across 195 natural and 1540 managed watersheds in China (2006–2020). Consistent trends in 52–89% of watersheds suggest climatic dominance, while anthropogenic drivers intensified or attenuated trends by 22–158% and 14–56%, especially in summer. Four independent multivariable models simulated seasonal COD and DO concentrations. Attribution analysis showed that seasonal factors explained 47.08% of the variation, while rainfall (25.37%) and slope (17.40%) accounted for COD and DO changes in natural watersheds; in contrast, Shannon Diversity Index (11.58%) and Largest Patch Index (10.66%) dominated in managed watersheds. This study establishes a generalizable framework for distinguishing natural and anthropogenic influences, offering key insights for adaptive water quality management under future climatic and socio-economic transitions.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":"9 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144202050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing photocatalytic efficiency through surface modification to manipulate internal electron-hole distribution 通过表面修饰控制内部电子空穴分布来提高光催化效率

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2025-05-29 DOI: 10.1038/s41545-025-00480-4

Hong Tu, Bihong Tian, Shunshun Chen, Jingyi Xu, Jianrong Yang, Zhichao Zhao, Shunhong Chen, Jian Wu

{"title":"Enhancing photocatalytic efficiency through surface modification to manipulate internal electron-hole distribution","authors":"Hong Tu, Bihong Tian, Shunshun Chen, Jingyi Xu, Jianrong Yang, Zhichao Zhao, Shunhong Chen, Jian Wu","doi":"10.1038/s41545-025-00480-4","DOIUrl":"https://doi.org/10.1038/s41545-025-00480-4","url":null,"abstract":"In this study, we synthesized ten g-C3N4-based covalent organic frameworks (COFs) and identified CN-306 as the most effective catalyst for visible-light-driven hydrogen peroxide (H2O2) production. Systematic optimization revealed that increasing ethanol proportions in the reaction medium significantly enhanced H2O2 yield, achieving a remarkable production rate of 5352 μmol g−1h−1 with a surface quantum efficiency of 7.27% at λ = 420 nm. Intriguingly, mechanistic investigations uncovered that excessive generation of singlet oxygen (1O2) acts as a critical inhibitory factor, impeding H2O2 accumulation. Multimodal characterization techniques combined with density functional theory (DFT) calculations were employed to unravel the origin of CN-306’s superior performance. Theoretical analyses demonstrated that CN-306 exhibits enhanced electron-hole separation efficiency, attributed to its reduced energy gap between the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO), which facilitates photocarrier migration and suppresses detrimental recombination. Furthermore, this work elucidates the structure-function relationships governing site-specific functional group modifications in COFs and their profound influence on photocatalytic activity. These findings provide molecular-level insights into rational catalyst design for optimizing surface structures and advancing solar-driven H2O2 synthesis applications.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":"1 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144176759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Scalable, high-efficiency porous monolithic polymer foam for solar-driven interfacial water evaporation and lithium extraction 可扩展，高效多孔整体聚合物泡沫，用于太阳能驱动界面水蒸发和锂提取

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2025-05-27 DOI: 10.1038/s41545-025-00474-2

Chunyang Jiang, Ziyi Yan, Yuefeng Bai, Ruoxin Li, Mingrui Wu, Wen-Hao Yu, Hong-Mei Chen, Ping Hu, Ke-Qin Zhao, Kangmin Niu, Yanbo Liu, Shih-Hsin Ho, Wei Wang, Yen Wei

{"title":"Scalable, high-efficiency porous monolithic polymer foam for solar-driven interfacial water evaporation and lithium extraction","authors":"Chunyang Jiang, Ziyi Yan, Yuefeng Bai, Ruoxin Li, Mingrui Wu, Wen-Hao Yu, Hong-Mei Chen, Ping Hu, Ke-Qin Zhao, Kangmin Niu, Yanbo Liu, Shih-Hsin Ho, Wei Wang, Yen Wei","doi":"10.1038/s41545-025-00474-2","DOIUrl":"https://doi.org/10.1038/s41545-025-00474-2","url":null,"abstract":"Freshwater scarcity remains a critical global challenge, prompting the development of sustainable solutions like solar-driven interfacial water evaporation technology. Here, we present a scalable fabrication method for porous monolithic polymer evaporators through olefin metathesis polymerization coupled with NaCl templating. The large-area evaporator (800 × 600 mm²) incorporates amine-capped aniline trimer (ACAT) as a photothermal component within a dicyclopentadiene (DCPD)/cyclooctene (COE) polymer matrix, enabling efficient solar energy absorption and water transport. The optimized SDIE PDCPD-25%COE-10%ACAT exhibits notable performance in seawater desalination, wastewater treatment, and lithium salt enrichment. Under 1 sun irradiation, it achieves a pure water evaporation rate of 3.64 kg m⁻² h⁻¹ with a solar-thermal conversion efficiency of 96.7%, reflecting high energy utilization efficiency. Outdoor experiments under natural sunlight further confirm its operational feasibility, yielding an evaporation rate of 3.33 kg m⁻² h⁻¹. This work provides a viable route for the large-scale implementation of photothermal water treatment technologies, contributing to sustainable freshwater production and resource recovery.<figure></figure>","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":"3 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Iron biochar synergy in aquatic systems through surface functionalities electron transfer and reactive species dynamics 铁生物炭通过表面功能、电子转移和反应物种动力学在水生系统中的协同作用

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2025-05-25 DOI: 10.1038/s41545-025-00471-5

Md Abdullah Al Masud, Hasara Samaraweera, Md. Mahmudul Hassan Mondol, Ardie Septian, Rakesh Kumar, Leigh G. Terry

{"title":"Iron biochar synergy in aquatic systems through surface functionalities electron transfer and reactive species dynamics","authors":"Md Abdullah Al Masud, Hasara Samaraweera, Md. Mahmudul Hassan Mondol, Ardie Septian, Rakesh Kumar, Leigh G. Terry","doi":"10.1038/s41545-025-00471-5","DOIUrl":"https://doi.org/10.1038/s41545-025-00471-5","url":null,"abstract":"The removal of organic pollutants from water by advanced oxidation has been successfully achieved using iron–biochar (Fe–BC)-based material. By embedding iron particles on the biochar, the resulting Fe–BC composite possesses enhanced surface functionalities that promote electron transfer and generate reactive oxygen species (ROS). Characterizations using various analytical techniques confirm the successful formation of the Fe-based biochar and its improved catalytic features. Batch degradation experiments have demonstrated that Fe–BC exhibits significantly higher performance than unmodified biochar in the breakdown of organic contaminants, primarily through advanced oxidation processes (AOPs) facilitated by iron-induced radical (SO4•−, •OH, O2•−) formation, non-radical ROS (1O2), and electron transfer pathways. Finally, the advantages of Fe-BC in the catalytic degradation of organic pollutants are summarized, highlighting potential limitations and prompting further research to optimize Fe–BC performance and expand Fe–BC applicability.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":"16 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Removal efficiency of ARGs in different wastewater treatment plants and their potential risks in effluent 不同污水处理厂对ARGs的去除率及其在出水中的潜在风险

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2025-05-24 DOI: 10.1038/s41545-025-00456-4

Chenyu Luo, Tao Zhang, Muhammad Farooq Mustafa, Muyu Li, Sai Xu

{"title":"Removal efficiency of ARGs in different wastewater treatment plants and their potential risks in effluent","authors":"Chenyu Luo, Tao Zhang, Muhammad Farooq Mustafa, Muyu Li, Sai Xu","doi":"10.1038/s41545-025-00456-4","DOIUrl":"https://doi.org/10.1038/s41545-025-00456-4","url":null,"abstract":"Wastewater treatment plants (WWTPs) have shown to be effective in reducing the abundance of antibiotic resistance genes (ARGs), serving as a crucial barrier to the transmission of ARGs through wastewater. However, the risk of those ARGs remaining in the effluent requires further investigation. In this study, influent and effluent samples from WWTPs with different process configurations were collected for metagenomic sequencing. A total of 1331 ARG subtypes were detected in influent, with total abundance ranged from 0.46 to 3.89 copies/cell, which was higher than global level. The total abundance of ARGs was effectively reduced in effluent with removal efficiency 63.2–94.2%, resulting in a relatively low level when compared with other cities worldwide. Despite the effectiveness in reducing the abundance of ARGs, 4.38% ARGs remaining in effluent were identified as Rank I by arg_ranker with APH(3”)-Ib, ere(A), and sul1 as the most abundant subtypes. Further, metagenomic assembly showed that these high-risky ARGs co-occurred with mobile genetic elements (transposase, recombinase, relaxase, and integrase) and were primarily carried by WHO priority pathogens (Salmonella enterica and Pseudomonas aeruginosa), indicating their high-risky potentials. Taken together, these results indicated that even though WWTPs effectively reduced the abundance of ARGs, the potential risks of remaining ARGs still cannot be neglected. These results might be helpful for controlling the spread of ARGs from WWTPs into neighboring ecosystems.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":"23 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144133593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic modulation of separation performance in electrically conductive polyamide membranes with scalable fabrication potential 具有可扩展制造潜力的导电聚酰胺膜分离性能的动态调制

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2025-05-22 DOI: 10.1038/s41545-025-00478-y

Haya Nassrullah, Sandra Aristizabal, Jamaliah Aburabie, Nidal Hilal, Raed Hashaikeh

{"title":"Dynamic modulation of separation performance in electrically conductive polyamide membranes with scalable fabrication potential","authors":"Haya Nassrullah, Sandra Aristizabal, Jamaliah Aburabie, Nidal Hilal, Raed Hashaikeh","doi":"10.1038/s41545-025-00478-y","DOIUrl":"https://doi.org/10.1038/s41545-025-00478-y","url":null,"abstract":"Polyamide is the most commonly used selective layer in nanofiltration membranes at an industrial scale. However, polyamide membranes lack flexibility, as their performance in terms of rejection and flux becomes fixed once the membrane is formed. Although several studies have explored during- and post-fabrication modifications of polyamide membranes, these approaches result in irreversible changes to membrane properties. Herein, we developed an electrically conductive polyamide membrane with dynamically tunable salt rejection performance by applying external positive or negative potentials. The observed changes in membrane performance were reversible, indicating that the chemical and structural integrity of the membrane is maintained. Furthermore, unlike findings from previous studies, the salt rejection performance of this membrane remains uncompromised even at voltages that induce electrochemical reactions. These results highlight the potential of this membrane for adaptive filtration systems and applications requiring electrochemical reactions without sacrificing separation efficiency.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":"21 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A framework for tracing the sources of nitrate in surface water through remote sensing data coupled with machine learning 通过结合机器学习的遥感数据追踪地表水中硝酸盐来源的框架

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2025-05-21 DOI: 10.1038/s41545-025-00473-3

Di Tian, Xinfeng Zhao, Lei Gao, Tao Jiang, Zuobing Liang, Zaizhi Yang, Pengcheng Zhang, Qirui Wu, Kun Ren, Chenchen Yang, Rui Li, Shaoheng Li, Yingjie Cao, Yingxue Xuan, Jianyao Chen, Aiping Zhu

{"title":"A framework for tracing the sources of nitrate in surface water through remote sensing data coupled with machine learning","authors":"Di Tian, Xinfeng Zhao, Lei Gao, Tao Jiang, Zuobing Liang, Zaizhi Yang, Pengcheng Zhang, Qirui Wu, Kun Ren, Chenchen Yang, Rui Li, Shaoheng Li, Yingjie Cao, Yingxue Xuan, Jianyao Chen, Aiping Zhu","doi":"10.1038/s41545-025-00473-3","DOIUrl":"https://doi.org/10.1038/s41545-025-00473-3","url":null,"abstract":"As an integral component of the global nitrogen cycle, nitrate are readily transferred from urban sewage discharge, agricultural activities, and atmospheric sedimentation to surface water. This paper introduces an innovative framework that combines multi-source remote sensing technology with stable nitrate nitrogen (δ15N-NO3−) and oxygen (δ18O-NO3−) isotopes mixing model, to identify nitrate sources quantitatively in surface water for the first time (R2 range from 0.50 to 0.99, RMSE range from 0.05‰ to 2.31‰, MAE range from 0.03‰ to 1.35‰). By reconstructing the historical nitrate isotopes from 2006 to 2023, we found that manure and sewage were the main contributing sources, followed by soil nitrogen, fertilizer and atmospheric deposition (contribution ratio of 3.5:2.5:2.5:1.5), wastewater discharge and fertilizer application in Xijiang river had a significant impact on this. This framework fills a gap in the research pertaining to remote sensing technology’s identification of surface nitrate sources, facilitating straightforward and user-friendly forecasting of nitrate source spatio-temporal sequences.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":"1 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

FeIII-driven self-cycled Fenton via contact-electro-catalysis for water purification 接触式电催化驱动的自循环Fenton净水技术

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2025-05-20 DOI: 10.1038/s41545-025-00476-0

Dongmei Ma, Jin Zhang, Wei Li, Jinxing Ma, Kuanchang He, Kui Yang, Jianghu Cui, Qian Liu, Sihao Lv, Min Zhang, Faliang Cheng, Defeng Xing

{"title":"FeIII-driven self-cycled Fenton via contact-electro-catalysis for water purification","authors":"Dongmei Ma, Jin Zhang, Wei Li, Jinxing Ma, Kuanchang He, Kui Yang, Jianghu Cui, Qian Liu, Sihao Lv, Min Zhang, Faliang Cheng, Defeng Xing","doi":"10.1038/s41545-025-00476-0","DOIUrl":"https://doi.org/10.1038/s41545-025-00476-0","url":null,"abstract":"While self-cycled Fenton (SC-Fenton) systems represent an innovative advancement in water purification technologies, their practical implementation remains constrained by inefficient in situ H2O2 generation. To address this limitation, we developed a mechano-driven contact-electro-catalysis (CEC) platform employing fluorinated ethylene propylene (FEP) as a triboelectric catalyst. Under ultrasound irradiation, this system achieves an exceptional H2O2 generation rate of 7.67 mmol·gcat–1·h–1, outperforming conventional piezo-catalysis systems. Mechanistic studies reveal that a built interfacial electric field generated on the FEP surface effectively reduces the free energy for the indirect 2e– water oxidation pathway. This unique characteristic promotes the generation of interfacial hydroxyl radical (*OH) and enhances its subsequent recombination into H2O2. The strategic integration of FeIII as a catalytic initiator with the CEC system enables the establishment of SC-Fenton reaction (FeIII/FEP/CEC). Notably, the contact-electrification electrons accumulated on the FEP interface drive efficient FeIII/FeII redox cycling, achieving a remarkable degradation rate for sulfadiazine at 0.125 min–1. This enhanced catalytic performance stems from FeIII-mediated amplification of dissociative hydroxyl radical (•OH) generation. This study provides fundamental insights into the underlying mechanisms of CEC-mediated FeIII-initiated SC-Fenton reaction, offering new possibilities for sustainable water purification processes.<figure></figure>","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":"18 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144097678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Technology status to treat PFAS-contaminated water and limiting factors for their effective full-scale application pfas污染水体处理技术现状及制约其有效全面应用的因素

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2025-05-15 DOI: 10.1038/s41545-025-00457-3

C. S. Tshangana, S. T. Nhlengethwa, S. Glass, S. Denison, A. T. Kuvarega, T. T. I. Nkambule, B. B. Mamba, Pedro J. J. Alvarez, A. A. Muleja

{"title":"Technology status to treat PFAS-contaminated water and limiting factors for their effective full-scale application","authors":"C. S. Tshangana, S. T. Nhlengethwa, S. Glass, S. Denison, A. T. Kuvarega, T. T. I. Nkambule, B. B. Mamba, Pedro J. J. Alvarez, A. A. Muleja","doi":"10.1038/s41545-025-00457-3","DOIUrl":"https://doi.org/10.1038/s41545-025-00457-3","url":null,"abstract":"Per- and polyfluoroalkyl substances (PFAS) are a class of synthetic chemicals that are highly resistant to degradation because of the strong C-F bond and their unique physico-chemical properties. Several techniques, both destructive and non-destructive, have been explored for removing PFAS from contaminated water. However, the most desirable techniques, ideally capable of effective separation and complete PFAS destruction and mineralization, have not progressed beyond bench-scale testing. This paper provides an overview of the existing treatment techniques demonstrated at laboratory, pilot, and industrial scales, and their associated treatment mechanisms. Insufficient data on pilot-scale and full-scale applications for PFAS remediation has limited the optimization and advancement of these systems at a large scale. Most research related to PFAS-remediation is based on laboratory-scale studies under ideal conditions that do not represent the complexity of PFAS-contaminated media. Factors such as inhibition by competing background compounds and secondary water or air pollution limit the application of some PFAS removal techniques at full-scale. Additionally, high energy intensity, cost, and inappropriate reactor design restrict the scalability of some proposed innovations. Here, we propose integrated systems and treatment trains as potential approaches to effectively remove and destroy PFAS from contaminated waters. This review also offers and contextualizes implementation barriers and scalable approaches for PFAS treatment.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":"26 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144066222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simultaneous adsorption of organic phosphonate and orthophosphate from municipal sewage on nanoparticle Fe3O4 with molecular simulation 纳米颗粒Fe3O4同时吸附城市污水中的有机磷酸盐和正磷酸盐的分子模拟

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2025-05-14 DOI: 10.1038/s41545-025-00453-7

Yubo Liu, Min Yao, Zhihao Jin, Yun Zhang

{"title":"Simultaneous adsorption of organic phosphonate and orthophosphate from municipal sewage on nanoparticle Fe3O4 with molecular simulation","authors":"Yubo Liu, Min Yao, Zhihao Jin, Yun Zhang","doi":"10.1038/s41545-025-00453-7","DOIUrl":"https://doi.org/10.1038/s41545-025-00453-7","url":null,"abstract":"Organic and inorganic phosphonates often co-exist in municipal sewage, and it is a challenge to remove them simultaneously. Nanoparticle Fe3O4 (Fe3O4 NPs) has attracted significant attention due to its high adsorption activity, low cost, environmental friendliness, and magnetic separation. Herein, the adsorption performance and mechanism of hydroxyethylidene diphosphonic acid (HEDP) and orthophosphate (PO43−) onto Fe3O4 NPs were systematically investigated. When the dosages were 0.4 g/L, the removal efficiencies of HEDP and PO₄³− reached 96.3% and 95.1%, respectively. pH had no significant impact on the adsorption, whereas the presence of HCO3−/CO32− markedly suppressed the removal of HEDP and PO43−. The adsorption of HEDP and PO43− onto Fe3O4 NPs conformed to the pseudo-second-order kinetics and Langmuir isotherm models in single and binary P systems. HEDP consistently inhibited the removal of PO43− in the binary P system. The adsorption mechanisms were primarily driven by the combined effect of electrostatic attraction, hydrogen bonding, and coordination complexation. DFT molecular simulation showed higher adsorption energy between HEDP and Fe3O4 NPs, and the simulation outcomes were in excellent agreement with the experimental data. Although the adsorption of HEDP and PO43− was competitive, total phosphorus in the effluent of municipal sewage could still meet the discharge standard.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":"43 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143945682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0