IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-23 DOI: 10.1021/acs.est.4c11406

Jian You,Hongxiang Zhang,Yongzhao Li,Wei Wang,Longmin Liu,Huaiyin Chen,Jianying Huang,Zuheng Wu,Meihua Wu,Bing Zhang,Xiaojun Bao,Yuekun Lai,Weilong Cai

{"title":"PPS Gradient Filter Material with High Efficiency and Excellent Dust Removal Capacity for Industrial Flue Gas Treatment by Integrating Numerical Modeling and Melt-Blown-Lamination Technology.","authors":"Jian You,Hongxiang Zhang,Yongzhao Li,Wei Wang,Longmin Liu,Huaiyin Chen,Jianying Huang,Zuheng Wu,Meihua Wu,Bing Zhang,Xiaojun Bao,Yuekun Lai,Weilong Cai","doi":"10.1021/acs.est.4c11406","DOIUrl":"https://doi.org/10.1021/acs.est.4c11406","url":null,"abstract":"The filter material is the key to controlling flue gas pollution with bag filter technology. Surface treatment of filter media using the PTFE membrane can improve its filtration performance. Badly, the reprocessing of used filter media has become a major challenge due to the ecological impact and potential human toxicity of PTFE. Herein, a novel PPS-based gradient filtration material (mPPS-25/NF-5) with high efficiency, low resistance, and controllability was prepared by combining numerical simulation, high-temperature melt-blown process, and lamination technology with PPS micronano-embedded fiber membranes (mPPS) as the surface layer structure. Benefiting from the three-dimensional porous network structure formed by the staggered arrangement of fibers in mPPS and the effective prediction and optimization of the structural performance of the designed filter media in advance, mPPS-25/NF-5 demonstrated superior filtration performance. Specifically, compared with commercial PTFE membrane lamination filter media, the average cleaning cycle of mPPS-25/NF-5 has been improved by 188.13 s, while the average residual resistance has been reduced by 41.84 Pa, which truly realizes a high efficiency, low resistance, and long service life. This work may offer fresh insight into new materials and their rapid and controllable production methods for flue gas purification under \"ultralow emission\" measures.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"137 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144122241","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}

引用次数: 0

Integration of Animal, Population, and Toxicogenomic Evidence on the Hematotoxic and Immunosuppressive Effects of Environmental Exposure to PFAS Mixtures in Adolescents. 综合动物、种群和毒物基因组学证据，研究环境暴露于PFAS混合物对青少年的血液毒性和免疫抑制作用。

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-23 DOI: 10.1021/acs.est.5c01138

Xiushuai Du,Xueming Xu,Xing-Xuan Dong,Xinlei Liang,Yitian Wu,Zhiyuan Du,Chen-Wei Pan,Gang Liang,Yue-Zu Li,Ya-Jie Zheng,Yu Qin,Kelei Qian,Jing Xu,Xinyu Hong,Dan-Lin Li,Weiwei Zheng

{"title":"Integration of Animal, Population, and Toxicogenomic Evidence on the Hematotoxic and Immunosuppressive Effects of Environmental Exposure to PFAS Mixtures in Adolescents.","authors":"Xiushuai Du,Xueming Xu,Xing-Xuan Dong,Xinlei Liang,Yitian Wu,Zhiyuan Du,Chen-Wei Pan,Gang Liang,Yue-Zu Li,Ya-Jie Zheng,Yu Qin,Kelei Qian,Jing Xu,Xinyu Hong,Dan-Lin Li,Weiwei Zheng","doi":"10.1021/acs.est.5c01138","DOIUrl":"https://doi.org/10.1021/acs.est.5c01138","url":null,"abstract":"Perfluoroalkyl and polyfluoroalkyl substances (PFASs) are emerging contaminants widely found in drinking water and food, potentially entering the human body through these sources. To investigate these effects, we simulated PFAS exposure doses in animal models, ranging from general population to occupational levels, and analyzed blood and spleen samples. Epidemiological studies linked PFAS exposure to immunosuppression and hematotoxicity, while toxicogenomic analyses validated the underlying biological mechanisms. PFAS exposure caused immunotoxic effects, including altered blood parameters and lymphocyte edema. Cellular abnormalities such as decreased cytoplasmic density, incomplete rough endoplasmic reticulum, chromatin condensation, lymphocyte nuclear shrinkage, and reduced mitochondrial cristae were observed. Epidemiological evidence revealed a dose-response relationship between mixed PFAS exposure and hematologic indices such as hematocrit (HCT), hemoglobin (HGB), platelet count (PLT), platelet-to-lymphocyte ratio (PLR), white blood cell count (WBC), monocyte percentage, and platelet large cell ratio (PLCR), with perfluorooctanoic acid (PFOA) playing a dominant role. Toxicogenomic analysis identified genes associated with platelets, anemia, and leukocyte function, linked to inflammation, Th17 cell differentiation, apoptosis, lipid metabolism, atherosclerosis, and JAK-STAT signaling. This study provides novel insights into the hematotoxicity and immunosuppressive effects of mixed PFAS exposure, emphasizing the need for PFAS substitution, removal, and policies addressing mixed exposures to protect public health.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"135 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144122388","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}

引用次数: 0

Sequestering Mercury in Cation Traps of Iron-Phosphate Framework via Isomorphous Substitution Minimizes Microbial Methylation 通过同形取代将汞隔离在磷酸铁框架的阳离子陷阱中，可以最大限度地减少微生物甲基化

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-23 DOI: 10.1021/acs.est.4c11826

Xin Tong, Sheng-Li Hou, Yu-Xin Yuan, Zhan-Hua Zhang, Yaqi Liu, Pedro J. J. Alvarez, Wei Chen, Tong Zhang

{"title":"Sequestering Mercury in Cation Traps of Iron-Phosphate Framework via Isomorphous Substitution Minimizes Microbial Methylation","authors":"Xin Tong, Sheng-Li Hou, Yu-Xin Yuan, Zhan-Hua Zhang, Yaqi Liu, Pedro J. J. Alvarez, Wei Chen, Tong Zhang","doi":"10.1021/acs.est.4c11826","DOIUrl":"https://doi.org/10.1021/acs.est.4c11826","url":null,"abstract":"A critical consideration for the design of mercury (Hg)-removal materials is preventing microbial methylation of accumulated Hg, a process that forms the highly neurotoxic and bioaccumulative methylmercury (MeHg) during material disposal or post in situ remediation. Inspired by how natural minerals incorporate Hg impurities within crystalline structures through isomorphous substitution, we design an iron-phosphate framework (NH4)Fe2(PO4)2(OH)·2H2O (denoted as NFP) for highly effective Hg sequestration. With its large quantities of negatively charged oxygen-rich channels, NFP effectively attracts Hg and physically entraps the ions by forming Hg–O coordination bonds. Thus, NFP renders fast kinetics and high capacity for Hg adsorption, ensuring extremely low Hg release and minimal microbial methylation potential. Regulating crystal facets decreases the ion exchange energy between NFP and Hg2+, further enhancing the effectiveness of NFP. Notably, mimicking natural mineral formation not only endows NFP with high environmental compatibility and versatility. This bionic design offers a new strategy for tackling environmental pollution while avoiding generating secondary problems of even greater health concerns.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"130 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144122575","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}

引用次数: 0

Spatiotemporal Variations and Sources of Airborne Particulate Matter in Urban Metro Platforms and Carriages in China 中国城市地铁月台和车厢大气颗粒物时空变化特征及来源

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-23 DOI: 10.1021/acs.est.5c01386

Zhao Shu, Cha Huang, Jingnan Li, Yanhuan Zhu, Yuwei Gao, Jihua Tan, Qian Liu, Guibin Jiang

{"title":"Spatiotemporal Variations and Sources of Airborne Particulate Matter in Urban Metro Platforms and Carriages in China","authors":"Zhao Shu, Cha Huang, Jingnan Li, Yanhuan Zhu, Yuwei Gao, Jihua Tan, Qian Liu, Guibin Jiang","doi":"10.1021/acs.est.5c01386","DOIUrl":"https://doi.org/10.1021/acs.est.5c01386","url":null,"abstract":"Since 2013, China has significantly improved its control over atmospheric air pollution. However, air pollution in indoor environments, particularly in urban metro systems, has been largely neglected. In this study, we comprehensively investigated the spatiotemporal variations in particulate matter (PM) pollution inside metro stations and carriages across seven Chinese cities. Our results revealed consistently high levels of PM2.5 (16–621 μg/m3) within the urban metro platforms. Elevated concentrations of metro PM2.5 can occur even under low outdoor PM2.5 conditions. Furthermore, we found that metro PM2.5 levels exhibited significant spatiotemporal variations across metro environments; specifically, a higher fraction of PM2.5 was present in metro carriages than on platforms. Notably, black carbon (BC), a critical toxic constituent of PM2.5, exhibited significantly higher concentrations in carriages than those on platforms. Real-time monitoring and single-particle analysis revealed distinct sources of metro PM compared to outdoor air PM; particularly, Fe/Ni/Cr/Mn particles mainly originated from the abrasion of rails and brakes, while Cu-bearing particles and BC likely result from the degradation of conductive carbon brushes and wires. Our analysis demonstrated that irregular iron-containing particles derived from rail abrasion constituted approximately 90% of platform PM. These findings highlight the pressing need for air quality control in metro systems and provide valuable insights for public health assessments related to exposure to metro air.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"21 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130441","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}

引用次数: 0

A Quantitative Relationship between Settling and Wettability for Weathered Microplastics in Aquatic Systems. 风化微塑料在水生系统中沉降与润湿性的定量关系

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-23 DOI: 10.1021/acs.est.4c11053

Yi Liang,Jingyi Gu,Ketong Chen,Hong Zhou,Jiamin Peng,Tingting Cai,Pei Na,Chenlu Guo,Weilin Huang,Chen Yang,Zhi Dang

{"title":"A Quantitative Relationship between Settling and Wettability for Weathered Microplastics in Aquatic Systems.","authors":"Yi Liang,Jingyi Gu,Ketong Chen,Hong Zhou,Jiamin Peng,Tingting Cai,Pei Na,Chenlu Guo,Weilin Huang,Chen Yang,Zhi Dang","doi":"10.1021/acs.est.4c11053","DOIUrl":"https://doi.org/10.1021/acs.est.4c11053","url":null,"abstract":"Settling plays a crucial role in determining the residence time, distribution, transport, and ultimate fate of microplastics (MPs) in aquatic environments. The settling dynamics of particles are influenced by their macroscale shape, mesoscale roundness, and microscale surface properties, along with ambient fluid flow conditions. Variations in the wettability of submillimeter MPs affect molecular interactions at the particle-water interface, altering the microscopic flow field and subsequently modifying drag forces during settling. This study examines the impact of wettability on the settling behavior of aged acrylonitrile butadiene styrene MPs by measuring their settling velocities and contact angles. It was shown that increased wettability promotes the settlement of the MPs. A drag model incorporating the Eötvös number─a dimensionless ratio of buoyancy energy to contact angle-derived surface energy─is developed to quantify the relationship between interfacial chemistry and hydrodynamic resistance. Unlike the conventional models, our model considers wettability as a key factor controlling the settling of MP particles. The model was validated using independently measured data and four sets of published data for the MPs. Results demonstrate that the model significantly improves the accuracy of the settling predictions for weathering spherical MPs. Additionally, by integrating the shape factor, it effectively accounts for the settling behavior of irregularly shaped MPs using published data sets. This improvement enhances predictability for MP transport pathways, helping assess MP accumulation zones and potential ecological risks in marine and freshwater systems.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"31 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144122238","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}

引用次数: 0

Neglected Biogeochemical Process for Ocean Health: Seagrass Detritus Simultaneously Enhances Phenolic Endocrine-Disrupting Chemical Capture and Organic Carbon Sequestration. 海洋健康被忽视的生物地球化学过程：海草碎屑同时增强酚类内分泌干扰化学捕获和有机碳固存。

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-23 DOI: 10.1021/acs.est.5c03543

Cui Zhang,Jian Lu,Jun Wu,Bitao Xiong

{"title":"Neglected Biogeochemical Process for Ocean Health: Seagrass Detritus Simultaneously Enhances Phenolic Endocrine-Disrupting Chemical Capture and Organic Carbon Sequestration.","authors":"Cui Zhang,Jian Lu,Jun Wu,Bitao Xiong","doi":"10.1021/acs.est.5c03543","DOIUrl":"https://doi.org/10.1021/acs.est.5c03543","url":null,"abstract":"This study presents the first comprehensive investigation on an easily neglected biogeochemical process of phenolic endocrine-disrupting chemical (EDC) capture and carbon sequestration by seagrass detritus. The results showed that Zostera marina L. detritus captured nonylphenol (NP) and bisphenol A (BPA) with high efficiency (>90%) and enhanced organic carbon sequestration in marine ecosystems. Under various seawater-sediment scenarios (pure seawater, nonburial, and burial systems), phenolic EDC rerelease rates were low (<20%), while total organic carbon (TOC) stocks increased by 21.5%-28.8% in EDC-treated groups compared to controls. Kinetic analyses revealed that NP and BPA were rapidly captured onto heterogeneous active sites of the detritus surface, with capture efficiency influenced by the physicochemical properties of contaminants, environmental factors, and the specific characteristics of the detritus. Laser scanning confocal microscopy (LSCM) and density functional theory (DFT) were employed to investigate synergistic mechanisms between phenolic EDCs and carbon at cellular and molecular levels. The lipids mediated NP sequestration through hydrophobic interactions with lipid-rich sites (such as phospholipids), while polysaccharides facilitated BPA binding via electrostatic interactions, highlighting their crucial roles in capturing phenolic EDCs. These findings reinforced the importance of seagrass meadows in capturing emerging contaminants and storing carbon in marine ecosystems.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"137 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144122242","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}

引用次数: 0

Concurrent Formation of Low-Maturity EC and BrC in Biomass and Coal Burning: O-PAH as a Precursor. 低成熟EC和BrC在生物质和煤炭燃烧中的同时形成：O-PAH作为前体。

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-23 DOI: 10.1021/acs.est.4c13299

Yong Han,Junjie Cai,Yingjun Chen,Yishun Zhang,Ling N Jin,Tian Chen,Jun Li,Gan Zhang,Jianmin Chen

{"title":"Concurrent Formation of Low-Maturity EC and BrC in Biomass and Coal Burning: O-PAH as a Precursor.","authors":"Yong Han,Junjie Cai,Yingjun Chen,Yishun Zhang,Ling N Jin,Tian Chen,Jun Li,Gan Zhang,Jianmin Chen","doi":"10.1021/acs.est.4c13299","DOIUrl":"https://doi.org/10.1021/acs.est.4c13299","url":null,"abstract":"Black carbon (BC) significantly influences climate change through light absorption. Traditional emission inventories equate BC with elemental carbon (EC) and overlook the variability in its properties across sources, leading to uncertainties in climate predictions. This study shows that EC from solid fuel combustion contains substantial low-maturity EC (char), whose emissions increase alongside the light absorption of soluble organic carbon (OC) as the fuel aromaticity rises. Concurrently, the abundance of oxygenated polycyclic aromatic hydrocarbons (O-PAHs) in soluble OC also increases. This suggests that char and brown carbon (BrC) share similar formation pathways with O-PAHs as key precursors. Time-resolved analysis during combustion cycles revealed a significant positive correlation between O-PAHs, the light absorption of soluble OC, and char emissions, further supporting this shared pathway. The nonbonding orbitals in BrC and char facilitate n → π* transitions in the visible region, which are more wavelength-dependent than the π → π* transition in high-maturity EC (soot). This study highlights char as a light-absorbing intermediate, influencing light absorption of EC emitted from solid fuel combustion. These insights into the formation pathways and optical properties of carbonaceous aerosols enhance our understanding of their climate impacts and underscore the need to differentiate between char and soot in climate models to improve accuracy.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"35 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144122392","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}

引用次数: 0

High-Resolution Characterization of the Size Exclusion Effect on the Transport of Low-Concentration Mixed-Size Colloids in Porous Media Using a Synthetic DNA-Labeling Method. 利用合成dna标记方法对多孔介质中低浓度混合粒径胶体输运的尺寸排除效应进行高分辨率表征

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-23 DOI: 10.1021/acs.est.4c12529

Changxi Wang,Zhaofei Duan,Renkuan Liao,Jirka Šimůnek,Dan Luo

{"title":"High-Resolution Characterization of the Size Exclusion Effect on the Transport of Low-Concentration Mixed-Size Colloids in Porous Media Using a Synthetic DNA-Labeling Method.","authors":"Changxi Wang,Zhaofei Duan,Renkuan Liao,Jirka Šimůnek,Dan Luo","doi":"10.1021/acs.est.4c12529","DOIUrl":"https://doi.org/10.1021/acs.est.4c12529","url":null,"abstract":"The transport of colloids in groundwater plays a critical role in pollutant dispersion, with the size exclusion effect (SEE) being a key mechanism influencing colloid fate. However, accurately measuring low-concentration colloids and differentiating between colloids of different particle sizes remains challenging. In this study, we encapsulated specific DNA fragments within colloids of sizes 0.1, 0.2, 0.5, 1.0, 3.0, and 5.0 μm to conduct column-scale experiments with either single-size or multi-size colloids. These experiments were designed to characterize the colloid breakthrough curves and quantify their SEE. This approach significantly enhanced detection signals, enabling accurate colloid detection at very low concentrations (≤10 mg L-1) and precise colloid size differentiation. Furthermore, the colloid breakthrough curves were fitted to quantify a key SEE parameter, i.e., the water saturation inaccessible to mobile colloids (γ). Regression analysis revealed a power function correlation between the γ parameter and the colloid diameter, indicating that the SEE intensifies with increasing colloid diameter. These findings highlight the potential of DNA labeling for high-resolution characterization of low-concentration and mixed-size colloidal particle transport in porous media. This report enhances our understanding of colloid transport behavior and its environmental implications.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"4 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144122239","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}

引用次数: 0

Immobilizing Electron Shuttles into van der Waals Heterostructures for Boosted Fenton-like Reactions. 促进类芬顿反应的范德华异质结构中固定电子穿梭。

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-23 DOI: 10.1021/acs.est.5c03665

Xianjun Tan,Zhenying Jiang,Mingkun Zhang,Chenyang Huang,Yuxiong Huang

{"title":"Immobilizing Electron Shuttles into van der Waals Heterostructures for Boosted Fenton-like Reactions.","authors":"Xianjun Tan,Zhenying Jiang,Mingkun Zhang,Chenyang Huang,Yuxiong Huang","doi":"10.1021/acs.est.5c03665","DOIUrl":"https://doi.org/10.1021/acs.est.5c03665","url":null,"abstract":"The pervasive occurrence of antibiotic contaminants in aquatic environments poses significant threats to ecosystems and public health. The heterogeneous peroxymonosulfate (PMS)-based advanced oxidation process (AOP) has proven as an effective approach to remove such persistent contaminants but still suffers from sluggish catalytic kinetics owing to insufficient charge transfer and active metal circulation. Herein, a van der Waals (vdW) heterostructure was fabricated with two-dimensional (2D) cobalt oxides (CoOx) nanosheets and polyoxometalate (POM) by a molecular co-assembly and post-calcination process. As a benefit from the combined merits of superior interfacial charge transfer accelerated by the vdW heterostructure and rapid Co(III)/Co(II) cycling promoted by the immobilization of electron-shuttle-like POM, the as-synthesized CoOx-POM vdW heterostructure (vdW-CPNSs) achieved efficient activation of PMS and exhibited a 21.5-fold higher degradation rate than the conventional Co3O4 counterpart for the elimination of antibiotic pollutants. Mechanism studies demonstrated that both radical (SO4• -) and non-radical (1O2) contributed to the superior degradation performance. Additionally, vdW-CPNSs could be integrated into a flow-through wastewater treatment setup, achieving nearly 100% removal of environmentally realistic level antibiotic contaminants, which exhibited a great potential for practical wastewater purification. This work provides new insights for the rational design of high-performance catalysts to promote PMS-based AOPs for removing emerging contaminants.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"57 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144122389","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}

引用次数: 0

Contrasting Effects of Atmospheric Particulate Matter Deposition on Free-Living and Particle-Associated Bacteria in the South China Sea 大气颗粒物沉降对南海自由生菌和颗粒相关菌的影响对比

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-05-23 DOI: 10.1021/acs.est.4c12533

Chang Su, Hongyan Zhou, Yifei Wang, Xueping Duan, Tong Jiang, Chao Zhang, Huiwang Gao, Liangliang Kong, Min Wang, Cui Guo

{"title":"Contrasting Effects of Atmospheric Particulate Matter Deposition on Free-Living and Particle-Associated Bacteria in the South China Sea","authors":"Chang Su, Hongyan Zhou, Yifei Wang, Xueping Duan, Tong Jiang, Chao Zhang, Huiwang Gao, Liangliang Kong, Min Wang, Cui Guo","doi":"10.1021/acs.est.4c12533","DOIUrl":"https://doi.org/10.1021/acs.est.4c12533","url":null,"abstract":"Atmospheric particulate matter (PM) deposition has become an important nutrient source in marine ecosystems, increasing particulate organic carbon and resource heterogeneity. However, their effects on marine bacterial communities remain unclear. In this study, by conducting on-board microcosm experiments with anthropogenic East Asian PM in the oligotrophic South China Sea, the response of particle-associated (PA) bacteria was investigated and compared with its free-living (FL) counterparts. Results showed that PM input increased nutrient heterogeneity, shifting bacterial community composition and lifestyle. Copiotrophic PA bacteria became more abundant and contributed a disproportionately higher percentage to total bacterial production despite a decline in total bacterial abundance. FL bacteria showed increased diversity, shifting from oligotrophs to copiotrophs, while PA bacteria displayed reduced diversity and nondirectional compositional changes, suggesting their distinct assembly mechanisms in response to external nutrient inputs. Metagenomic analysis further revealed that PM drives a shift toward a copiotrophic, particle-attached lifestyle with upregulated pathways for chemotaxis, motility, and biofilm formation. Notably, PM addition also increased the relative abundance of oil-degrading taxa. These findings reveal the complexity of microbial responses to environmental perturbations and underscore the need to consider unique ecological niches and bacterial lifestyles.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"56 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130439","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}

引用次数: 0

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