Water Research最新文献

{"title":"Pesticide contamination is associated with invertebrate community change in non-agricultural streams","authors":"Leonie Schweiger, Marco Foit, Philipp Vormeier, Ralf Schäfer, Matthias Liess","doi":"10.1016/j.watres.2025.123903","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123903","url":null,"abstract":"Pesticides are frequently detected in protected regions, including biosphere reserves, but their ecological impacts within these ecosystems remain insufficiently studied. Here, we examined the presence and effects of pesticides in 13 streams situated in catchments without adjacent agricultural land use, where contamination was presumed to result solely from atmospheric transport. Although pesticide concentrations were lower than in agricultural streams, the potential toxicity of pesticides was associated with a significant reduction in sensitive insect populations, as indicated by the SPEAR_pesticides index. Notably, 40% of the studied streams did not achieve a good status according to the pesticide specific SPEAR_pesticides indicator. Although mean pesticide levels were associated with distance weighted proportions of agricultural land use, the peaks of potential toxicity (TU_max) linked to ecological effects could not be associated with such quantitative measures of agricultural activity. They were mainly linked to insecticides and biocides not approved for agricultural use in Germany or phased out during the time of study, such as fipronil and neonicotinoids, and to a lesser extent also pyrethroids currently in use. We conclude that ecotoxicological impacts cannot be predicted by modelling aerial transport based on agricultural land use. Environmental monitoring is key to reveal impacts of pesticides and biocides in non-agricultural streams. Our results highlight the need for further investigation into non-agricultural entry pathways of pesticides and biocides in order to mitigate pesticide effects in these critical refuge biotopes.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"138 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144133606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrating water quality and water quantity to diagnose the health of water metabolism systems in multi-core multi-level urban agglomerations","authors":"Ying Yang, Jing Wen, Meirong Su, Qionghong Chen","doi":"10.1016/j.watres.2025.123899","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123899","url":null,"abstract":"Urban agglomerations (UAs) are compelled to scrutinize the health of their water systems as the frequency of water crises increases. An urban water system’s health is closely related to metabolism processes. To date, water systems in multi-core multi-level UAs have not been analyzed using water quantity and water quality because of methodological constraints. To address this research gap, we developed an integrated water quality–water quantity model for diagnosing water metabolism systems that could process nested multi-region input-output (MRIO) tables. We coupled the MRIO tables and established two networks, an integrated water quantity–quality metabolism network (IWMN) and a water quantity metabolism network (QWMN). We tested the two networks with data from the Guangdong-Hong Kong-Macao UA and assessed four aspects of the networks’ health, namely vigor, organization, resilience, and collaboration, using ecological network analysis. We discovered that IWMN exhibited lower vigor (internal circulation 10.4%) and organization dominated by dependency (total contribution intensity σ = -23) compared to the QWMN. Polity-driven disparities shaped the robustness distribution, while a mutualism tendency coexisted with a complex exploitation relationship (52.4%), particularly in the core large-sized city of Hong Kong, where 58 new competitive pairs emerged. Thus, we recommend prioritizing Guangdong-Hong Kong-Macao trade optimization for high-water-content products to enhance system health.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"46 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144133567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing hydrolysis acidification process for coal gasification wastewater treatment through micro-aeration strategy: The role of micro-oxygen environment","authors":"Shengqiang Hei, Biming Liu, Hui Xu, Xing Lu, Xinrui Guo, Danyang Li, Shuo Zhang, Xia Huang","doi":"10.1016/j.watres.2025.123898","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123898","url":null,"abstract":"Micro-aeration has been regarded as an efficient, economical, and promising strategy for enhancing the anaerobic hydrolysis acidification (HA) of toxic and recalcitrant organics. However, the available information on both its application in actual refractory industrial wastewater and the molecular-level interrelated mechanisms of functional genes and functional enzymes in pollutants degradation is limited. Herein, micro-aeration HA was exploited to investigate the degradation performance of actual coal gasification wastewater under various dissolved oxygen (DO) concentrations. In contrast, the optimal removal efficiencies of chemical oxygen demand, NH₃-N, total organic carbon, and total phenols reached 53.3%, 14.63%, 56.5% and 48.1%, respectively, as well as biodegradability and detoxification capacity at 0.2-0.3 mg/L of DO. Especially, the micro-oxygen environment demonstrated a proclivity for the removal of phenolic compounds. And the activities of functional enzymes associated with phenolic degradation (phenol hydroxylase, catechol 1,2-dioxygenase and dehydrogenase) were increased. Besides, organics hydrolysis-related, toxic and recalcitrant organics degradation-related, ring cleavage enzyme-related and facultative species under 0.2-0.3 mg/L of DO were more abundant than that in reactor without DO. Finally, this micro-oxygen condition also improved the abundance of genes expressing functional enzymes involved in the metabolic processes of phenolic biochemical degradation (e.g., phenol/toluene 2-monooxygenase, catechol 1,2-dioxygenase, muconate cycloisomerase). This study provides a theoretical basis for the industrial application of micro-aeration strategy for the detoxification pretreatment of refractory industrial wastewater.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"408 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144133568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into Synergistic Metabolism Mechanisms of Carbon, Nitrogen and Phosphorus in Tetrasphaera-dominated Partial Denitrifying Phosphorus Removal and Anammox (PDPRA) process","authors":"Jiayu Zhang, Wei Zeng, Qingan Meng, Hongjun Liu, Yao Lu, Shuangshuang Li, Yongzhen Peng","doi":"10.1016/j.watres.2025.123901","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123901","url":null,"abstract":"The partial denitrifying phosphorus removal coupled with anammox (PDPRA) technology holds great promise for the simultaneous removal of carbon, nitrogen, and phosphorus. However, its widespread application is hindered by the instability of nitrite accumulation and the strong dependence on volatile fatty acids (VFAs) of traditional denitrifying polyphosphate accumulating organisms (DPAOs). This study first proposes coupling partial denitrifying phosphorus removal, driven by <em>Tetrasphaera</em>, a novel fermentative DPAO, with anammox for efficiently treating wastewater rich in complex organic matter (e.g., amino acids and proteins). A comprehensive investigation was conducted on the synergistic metabolic mechanisms between DPAOs and anammox bacteria (AnAOB). Under a low carbon to nitrogen (C/N) ratio of 3.1 ± 0.1, <em>Tetrasphaera</em> utilized intracellular amino acids, particularly proline, to drive the stable and efficient nitrite accumulation, leading to a contribution of 82.64% to total nitrogen removal through anammox. This PDPRA system ultimately achieved remarkable removal efficiency of chemical oxygen demand (COD, 84.8 ± 0.8%), total inorganic nitrogen (TIN, 92.3 ± 0.9%) and orthophosphate (PO₄^3--P, 92.0 ± 1.5%). Microbial community analysis and metagenomic sequencing revealed the high abundance of <em>Tetrasphaera</em> and <em>Candidatus Brocadia</em>, with their high contribution to key functional genes (<em>narGHI, napAB, ppk1, ppk2, hzs, hdh</em>) confirming the co-existence and co-prosperity metabolic relationship between DPAO and AnAOB. Additionally, an even spatial distribution of <em>Tetrasphaera</em> and AnAOB within the biofilm was developed, further ensuring the stable and efficient removal performance. The findings of this study contribute to the broader application of the PDPRA process and provide a new approach for treating wastewater containing complex organic matter.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"16 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144133608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transport of eco-corona coated nanoplastics in coastal sediments","authors":"Xia Liu ,&nbsp;Rubi Zhao ,&nbsp;Muhan Liu ,&nbsp;Tianyuan Zheng ,&nbsp;Yujie Hao ,&nbsp;Chu Wang ,&nbsp;Lu Liu ,&nbsp;Yating Zhao ,&nbsp;Zhuomiao Liu ,&nbsp;Yanhui Dai ,&nbsp;Tongtao Yue ,&nbsp;Jian Zhao ,&nbsp;Zhenyu Wang ,&nbsp;Baoshan Xing","doi":"10.1016/j.watres.2025.123893","DOIUrl":"10.1016/j.watres.2025.123893","url":null,"abstract":"<div><div>Transport is a critical process for understanding the fate and risk of nanoplastics (NPs) in marine environments. In this work, vertical transport of polystyrene (PS) NPs with different surface properties in marine sediments were investigated. Two types of Pd-doped (PS-Pd, 100 nm) NPs with distinct hydrophobicity were successfully synthesized, and both types of NPs showed weak and insignificant transport, with ratio of maximum effluent to influent NPs concentrations (<em>M_eff</em>) at 10 %-11 %. This is mainly due to physical straining of both NPs as caused by strong aggregation as confirmed by advection-dispersion modelling. Two functionalized NPs (PS-COOH and PS-NH₂) showed strong transport in marine sediment, mainly because of weak physical straining. Negatively charged and less hydrophobic PS-COOH NPs exhibited stronger transport (<em>M_eff</em>, 43 %) than PS-NH₂ NPs (<em>M_eff</em>, 15 %). Heteroaggregation experiments and TEM-EDS mapping demonstrated that weak hydrophobic interaction with organic matter and electrostatic attraction with minerals were the main reasons for higher transport of PS-COOH than PS-NH₂. The formation of eco-corona on NPs inhibited the transport of PS-COOH NPs. However, eco-corona enhanced PS-NH₂ NPs transport (<em>M_eff</em>, 20 ± 5 %) because of decreased electrostatic attraction. Interestingly, for the two PS-Pd NPs, the transport performed differently after eco-corona coating, in which the transport of hydrophilic PS-Pd-1 decreased after eco-corona coating due to increased hydrophobic interaction, while the increased transport of hydrophobic PS-Pd-2 was caused by weakened physical straining in sediments. These results provide insight into transport mechanism of NPs, and highlight critical roles of eco-corona in the fate and processes of NPs in marine sediments.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"284 ","pages":"Article 123893"},"PeriodicalIF":11.4,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simultaneously disinfection of amoebae, endosymbiotic bacteria, and resistance genes using a novel two-electron water oxidation strategy","authors":"Zheshun Ou, Zihe Wang, Chengyu Duan, Longfei Shu, Zhuofeng Hu","doi":"10.1016/j.watres.2025.123894","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123894","url":null,"abstract":"Amoebae, which serve as important vectors for various pathogenic bacteria, are ubiquitous in natural and artificial water systems. Their robust survival capabilities and protective characteristics render conventional disinfection methods largely ineffective. Moreover, amoeba cells provide an ideal environment for the replication and transfer of antibiotic resistance genes, posing a significant threat to human health and safety. In this study, an in-situ activation system for electrocatalytic water oxidation was developed. This system effectively inactivates amoeba spores and their intracellular symbiotic bacteria while simultaneously reducing the abundance of resistance genes through the generation of hydroxyl radicals (•OH) and carbonate free radicals (•CO₃^-). The results demonstrated a 99.9% inactivation rate for amoeba spores and a 99.999% inactivation rate for intracellular bacteria. In addition, the prevalence of resistant genes in bacteria within amoebae, specifically including <em>sul1</em> (sulfonamide resistance), <em>tetA</em> (tetracycline resistance), <em>blaFOX</em> (cefoxitin resistance), <em>arsB</em> (arsenic resistance), <em>czcA</em> (cadmium resistance), and <em>copA</em> (copper resistance), was significantly reduced by approximately 16%-62.6%. Therefore, this study introduces a new technology capable of simultaneously treating amoeba spores, intracellular bacteria, and resistance genes, which holds significant importance for reducing the spread of resistant genes and enhancing public health safety.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"238 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Singlet oxygen treatment of algae-laden water: An elegant way of decontamination without cellular damage","authors":"Ting Li ,&nbsp;Yichuan Wang ,&nbsp;Jianfeng Zheng ,&nbsp;Menghan Feng ,&nbsp;Ziao Zhang ,&nbsp;Baoan Li ,&nbsp;Shuo Zhang","doi":"10.1016/j.watres.2025.123892","DOIUrl":"10.1016/j.watres.2025.123892","url":null,"abstract":"<div><div>Algae-laden water with high levels of dissolved organics and cyanotoxins adversely affects water treatment plants and drinking water safety. As an emergency treatment, oxidation-assisted coagulation improves the removal efficiency of algae cells by lowering their motility, but the applied oxidants cause cellular damages that lead to serious release of intracellular organic pollutants. Here, we unveiled that singlet oxygen (¹O₂) provides state-of-the-art pretreatment that destabilizes the algal cells to make them more and readily removed, but does not disrupt the cells and cause the release of intracellular materials. Meanwhile, the extracellular pollutants related to cyanotoxins and taste-and-odor compounds can be effectively eliminated by ¹O₂ from aqueous phase. In contrast to ¹O₂, other oxidant species such as ozone (O₃), hydroxyl radical (•OH), hypochlorite ion (ClO^-), peroxymonosulfate (PMS), or permanganate ion (MnO₄^-) damaged the algae cells and led to serious organic contamination. We gained insights how ¹O₂ induced the nonviability and surface modification of algae cells while keeping them undamaged, which facilitates the algae pollution control by coagulation. Finally, we successfully applied the ¹O₂ treatment to real algae-contaminated water from a nearby reservoir. Our findings support that ¹O₂ technology may serve as the next-generation emergency treatment to deal with algae-laden water.</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"283 ","pages":"Article 123892"},"PeriodicalIF":11.4,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoscale and molecular evidences for adsorptive fractionation of dissolved organic matter at the interfaces of Al-bearing ferrihydrite and water","authors":"Li Li, Hanyue Zhang, Xiaojuan Li, Shiwen Hu","doi":"10.1016/j.watres.2025.123896","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123896","url":null,"abstract":"Ferrihydrite (Fh) usually exists in the form of Al-bearing Fh in soils and sediments, and Al substitution may have a remarkable influence on Fh characteristics, controlling its reaction with dissolved organic matter (DOM). Yet, little is known about the impacts of Al-bearing Fh on the fate of DOM. Here, selective binding and molecular fractionation of DOM was investigated at the interfaces of Al-bearing Fh and water. Al substitution altered surface properties such as point of zero charge (PZC), surface OH groups, and specific surface areas (SSA), structure, composition, and adsorption capacity of Fh. Specifically, within 30 mol% Al substitution, Al entered into ferrihydrite structure by isomorphous substitution to form Al-substituted ferrihydrite and immobilized DOM increased with Al substitution owing to increasing surface OH groups, SSA, and pore volumes. Once the amount of added Al exceeds 30 mol%, gibbsite was formed except for Al-substituted Fh, and adsorbed DOM decreased with Al addition. The coordination environment of Al-substituted Fh consisted of Fe-O and edge- and corner-sharing FeO₆ octahedral. Microscopic analysis at nanoscale disclosed that DOM was evenly distributed within Al-bearing Fh aggregates and on gibbsite surface, and DOM immobilized within Al-bearing Fh nanopores had a higher oxidation state. Mass spectrometry analysis at molecular scale revealed that compared with gibbsite, high molecular weight substances and substances containing more oxygenated groups or highly in unsaturation preferentially bound to Al-bearing Fh, and Fh with 30 mol% Al substitution induced most pronounced molecular fractionation. Collectively, these findings shed novel insights into the impact of Al substitution on interfacial adsorptive fractionation of DOM, contributing to in-depth understanding geochemical cycling of C and predicting organic C cycling across aquatic-terrestrial interfaces.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"33 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144133600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phenotypic Prevalence Index: Diversity of Polyphosphate-Accumulating Organisms (PAOs) and Insights in Unknown PAOs Revealed by Combined Fluorescence-Activated Cell Sorting (FACS) and 16S rRNA Gene Sequencing","authors":"Peisheng He, Yuan Yan, Jangho Lee, IL Han, Guangyu Li, Fabrizio Sabba, Zhen Jia, George F. Wells, April Z. Gu","doi":"10.1016/j.watres.2025.123897","DOIUrl":"https://doi.org/10.1016/j.watres.2025.123897","url":null,"abstract":"Despite the recognized crucial role of polyphosphate-accumulating organisms (PAOs) in Enhanced Biological Phosphorus Removal (EBPR) process for phosphorus removal and recovery in wastewater treatment, knowledge gaps remain in the diversity and elasticity of their identity, function, and metabolism. Traditional studies have focused on a few canonical PAOs, such as Candidatus <em>Accumulibacter</em> and <em>Tetrasphaera</em>, but the heterogeneity and variation of their phenotypic traits was rarely touched upon, due to a lack of effective tools. In this study, we proposed a novel concept of the phenotypic prevalence index (PPI), derived from the combination of phenotypic traits-targeted fluorescence-activated cell sorting (FACS) and 16S rRNA gene sequencing, to quantify the prevalence of specific phenotypic traits across identified microbial taxa, as case study of uncovering the phenotypic diversity and heterogeneity within PAOs across six EBPR systems. The results revealed distinct and “unexpected” phylogenetic composition and enrichment patterns of candidate FACS-Sorted PAOs across EBPR samples and, particularly, the new PPI assessment of known PAOs elucidated unanticipated high phenotypic heterogeneity in these PAO taxa. Surprisingly, the PPI values of Candidatus <em>Accumulibacter</em> was significantly lower than Tetrasphaera and other candidate PAOs, such as <em>Propionivibrio, Paracoccus, Thiothrix, and Dechloromonas</em>, suggesting a possibly less dominant role of <em>Accumulibacter</em> than previously assumed, while highlighting the ecological importance of other PAOs taxa that calls for further investigation. The newly proposed PPI enabled us to elucidate and quantify the intricate phenotypic heterogeneity within any PAOs taxa of interest beyond the phylogenetic variation alone and can be applied in different ecosystems.","PeriodicalId":443,"journal":{"name":"Water Research","volume":"232 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144133598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic oxidation-adsorption of As(III) via Zr/Fe prussian blue analogs composite membranes activated by peroxymonosulfate for sustainable water remediation","authors":"Zhu Xiong ,&nbsp;Kaige Dong ,&nbsp;Zhuoran Yi ,&nbsp;Sakil Mahmud ,&nbsp;Yuhang Cheng ,&nbsp;Manyu Deng ,&nbsp;Gaosheng Zhang ,&nbsp;Mengmeng Jia ,&nbsp;Weiting Wang ,&nbsp;Jiyu Zhang ,&nbsp;Xuexia Huang ,&nbsp;Wei Zhang","doi":"10.1016/j.watres.2025.123891","DOIUrl":"10.1016/j.watres.2025.123891","url":null,"abstract":"<div><div>This study presents a Zr/Fe-PBAs@PDA/PEI-M composite membrane engineered for efficient arsenite (As(III)) removal via a synergistic adsorption-oxidation mechanism. A polytetrafluoroethylene (PTFE) membrane was functionalized with polydopamine/polyethyleneimine (PDA/PEI), enabling uniform deposition of zirconium-doped iron Prussian blue analogues (Zr/Fe-PBAs) with a mesoporous structure (3.6 nm pore size) and a face-centered cubic crystalline framework. Advanced characterization confirmed Zr⁴⁺ substitution at Fe sites and the formation of binuclear bidentate Fe²⁺/Fe³⁺-C<img>N/Zr–O coordination complexes. This architecture facilitated dual As(III) remediation pathways: (1) Fe²⁺/Fe³⁺ redox cycling activated peroxymonosulfate (PMS), generating •OH, SO₄•⁻, O₂•⁻ and ¹O₂ for insitu oxidation; (2) Zr–O coordination selectively captured arsenic species. The membrane exhibited a high As(III) adsorption capacity (558.96 mg/m²) and 90 % removal efficiency (2.0 mg/L influent) under optimized conditions (30 kPa, pH ∼7.0) with minimal metal leaching (&lt;0.12 mg/L Fe/Zr). It demonstrated strong resistance to cationic interference and retained 65 % efficiency after three cycles despite competitive anionic effects. Field validation using Pearl River water (0.5 mg/L effluent) confirmed 80 % removal, meeting Chinese discharge standards. This work presents a promising lattice-engineered strategy for activating PMS, enabling sustainable remediation of low-concentration As(III).</div></div>","PeriodicalId":443,"journal":{"name":"Water Research","volume":"283 ","pages":"Article 123891"},"PeriodicalIF":11.4,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}