Although confined hydrated iron oxide (HFO) materials demonstrate adsorption and catalytic oxidation of water contaminants, their performance is fundamentally limited by precursor properties that are unmodifiable in conventional impregnation–precipitation synthesis. Here we use PO43−-assisted oxidation–polymerization to adjust the particle size and surface charge of ferric hydroxy phosphates (FHPs), followed by immobilization of the FHPs on polystyrene microspheres containing sulfonic acid group to prepare nano-confined FHP material. Nano-confined FHP material exhibits stronger catalytic oxidation activity and adsorption performance than confined HFO materials prepared by the impregnation–precipitation method, removing 96.49 % Cu2+ and 95.03 % EDTA from simulated wastewater. Removal efficiency remains above 95 % after eight cycles. Systematic evaluation revealed competitive ionic species exhibit a negligible impact on Cu-EDTA elimination efficiency, but the presence of humic acid decreases the removal efficiency of EDTA. Mechanistic investigations verified that the degradation process of EDTA predominantly involves ·OH and O2−· mediated decarboxylation pathways, while Cu2+ is removed by forming coordinate bonds with the oxygen-containing functional groups within the nano-confined FHP material. These findings establish a precursor-engineering paradigm for designing high-efficiency confinement materials targeting heavy metal organic complexes.
{"title":"Precursor-tuned nano-confined ferric hydroxy phosphate materials for enhanced synergistic fenton-like-adsorption of Cu-EDTA complexes","authors":"Jie Wang, Mengyu Yuan, Zhihong Qin, Shaokun Wang, Shaopu Li, Haofei Huang","doi":"10.1016/j.jenvman.2026.128639","DOIUrl":"10.1016/j.jenvman.2026.128639","url":null,"abstract":"<div><div>Although confined hydrated iron oxide (HFO) materials demonstrate adsorption and catalytic oxidation of water contaminants, their performance is fundamentally limited by precursor properties that are unmodifiable in conventional impregnation–precipitation synthesis. Here we use PO<sub>4</sub><sup>3−</sup>-assisted oxidation–polymerization to adjust the particle size and surface charge of ferric hydroxy phosphates (FHPs), followed by immobilization of the FHPs on polystyrene microspheres containing sulfonic acid group to prepare nano-confined FHP material. Nano-confined FHP material exhibits stronger catalytic oxidation activity and adsorption performance than confined HFO materials prepared by the impregnation–precipitation method, removing 96.49 % Cu<sup>2+</sup> and 95.03 % EDTA from simulated wastewater. Removal efficiency remains above 95 % after eight cycles. Systematic evaluation revealed competitive ionic species exhibit a negligible impact on Cu-EDTA elimination efficiency, but the presence of humic acid decreases the removal efficiency of EDTA. Mechanistic investigations verified that the degradation process of EDTA predominantly involves ·OH and O<sub>2</sub><sup>−</sup>· mediated decarboxylation pathways, while Cu<sup>2+</sup> is removed by forming coordinate bonds with the oxygen-containing functional groups within the nano-confined FHP material. These findings establish a precursor-engineering paradigm for designing high-efficiency confinement materials targeting heavy metal organic complexes.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"399 ","pages":"Article 128639"},"PeriodicalIF":8.4,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Pub Date : 2026-01-15DOI: 10.1016/j.jenvman.2026.128635
Ming Zhou , Chao Li , Li Hu , Yantang Wang , Jiashun Cao , Hongtao Shi , Yanhong Lu , Lisha Zhu , Jinyan Guo
Constructed wetlands (CWs) often experience declining efficiency due to clogging during long-term operation, traditional prevention and control methods are costly and prone to causing secondary pollution. This study innovatively integrated a bioelectrochemical system (MEC) with a vertical flow CW, forming a CW-MEC system. By regulating the electrification time (4.5 h, 9.0 h, 13.5 h within an 18-h hydraulic retention time cycle), it investigates the system's impact on alleviating clogging and the migration mechanisms across distinct vertical layers. The results demonstrated that a 9.0 h electrification time (ET) significantly enhanced the overall system performance. The quartz sand layer exhibited the smallest decrease in porosity, which was 0.87 compared to 0.71 in the control, while maintaining a stable COD removal rate of 61 %. Furthermore, it effectively regulated the composition of extracellular polymeric substances (EPS). The electric field promoted directional migration of blockage, with negatively charged EPS migrating towards the anode and inorganic precipitates migrating towards the cathode. Notably, the migration potential of Soluble-EPS (S-EPS) towards the anode increased by 116 % compared to the control. This resulted in a reduced total amount of clogging substances in the quartz sand layer, achieving "intermediate layer protection". This study, for the first time, reveals the vertical spatial migration patterns of blockage under electric field regulation and proposes the novel “sacrificial protection” mechanism of the electrode layers for the quartz sand layer. This provides an innovative strategy for the long-term and low-carbon operation of CWs.
{"title":"Mitigating vertical clogging and managing blockage migration in bioelectrochemical constructed wetlands: Electrification time regulation as a strategy","authors":"Ming Zhou , Chao Li , Li Hu , Yantang Wang , Jiashun Cao , Hongtao Shi , Yanhong Lu , Lisha Zhu , Jinyan Guo","doi":"10.1016/j.jenvman.2026.128635","DOIUrl":"10.1016/j.jenvman.2026.128635","url":null,"abstract":"<div><div>Constructed wetlands (CWs) often experience declining efficiency due to clogging during long-term operation, traditional prevention and control methods are costly and prone to causing secondary pollution. This study innovatively integrated a bioelectrochemical system (MEC) with a vertical flow CW, forming a CW-MEC system. By regulating the electrification time (4.5 h, 9.0 h, 13.5 h within an 18-h hydraulic retention time cycle), it investigates the system's impact on alleviating clogging and the migration mechanisms across distinct vertical layers. The results demonstrated that a 9.0 h electrification time (ET) significantly enhanced the overall system performance. The quartz sand layer exhibited the smallest decrease in porosity, which was 0.87 compared to 0.71 in the control, while maintaining a stable COD removal rate of 61 %. Furthermore, it effectively regulated the composition of extracellular polymeric substances (EPS). The electric field promoted directional migration of blockage, with negatively charged EPS migrating towards the anode and inorganic precipitates migrating towards the cathode. Notably, the migration potential of Soluble-EPS (S-EPS) towards the anode increased by 116 % compared to the control. This resulted in a reduced total amount of clogging substances in the quartz sand layer, achieving \"intermediate layer protection\". This study, for the first time, reveals the vertical spatial migration patterns of blockage under electric field regulation and proposes the novel “sacrificial protection” mechanism of the electrode layers for the quartz sand layer. This provides an innovative strategy for the long-term and low-carbon operation of CWs.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"399 ","pages":"Article 128635"},"PeriodicalIF":8.4,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Pub Date : 2026-01-15DOI: 10.1016/j.jenvman.2026.128637
Juan Yu , Yaohui Cai , Mingfei Yang , Mingyi Wen , Xiaodong Gao , Xining Zhao
The gravity-driven membrane (GDM) system is a promising technology for energy-efficient water treatment. However, there is limited understanding of the influence of water temperature and adsorbed water on GDM performance. In this study, pure water was used to elucidate the coupled behavior and mechanisms of flux decline in GDMs. The results showed that the flux-time profiles of the GDMs followed a similar pattern under all tested conditions, increasing rapidly to a maximum and then gradually declining to a stable flux within approximately 3000 min. When the water temperature increased from 5°C to 35°C, the time required to reach a stable flux decreased to approximately half of that at 5°C. During the permeation process, the ratio of adsorbed water to pore volume (Ra) increased exponentially with time, resulting in a gradual decline in permeation flux from its maximum value to a stable value. Overall, our results indicate that flux reduction in GDM systems is primarily governed by material properties (e.g., surface energy and related interfacial characteristics) and the interactions of water molecules in the adsorbed phase. This work provides mechanistic insights that can guide the optimization of GDM design and operating parameters for energy-efficient membrane treatment systems.
{"title":"Effect of temperature on the permeation for gravity-driven membrane (GDM): Linking adsorbed water with flux decline","authors":"Juan Yu , Yaohui Cai , Mingfei Yang , Mingyi Wen , Xiaodong Gao , Xining Zhao","doi":"10.1016/j.jenvman.2026.128637","DOIUrl":"10.1016/j.jenvman.2026.128637","url":null,"abstract":"<div><div>The gravity-driven membrane (GDM) system is a promising technology for energy-efficient water treatment. However, there is limited understanding of the influence of water temperature and adsorbed water on GDM performance. In this study, pure water was used to elucidate the coupled behavior and mechanisms of flux decline in GDMs. The results showed that the flux-time profiles of the GDMs followed a similar pattern under all tested conditions, increasing rapidly to a maximum and then gradually declining to a stable flux within approximately 3000 min. When the water temperature increased from 5°C to 35°C, the time required to reach a stable flux decreased to approximately half of that at 5°C. During the permeation process, the ratio of adsorbed water to pore volume (<em>R</em><sub><em>a</em></sub>) increased exponentially with time, resulting in a gradual decline in permeation flux from its maximum value to a stable value. Overall, our results indicate that flux reduction in GDM systems is primarily governed by material properties (e.g., surface energy and related interfacial characteristics) and the interactions of water molecules in the adsorbed phase. This work provides mechanistic insights that can guide the optimization of GDM design and operating parameters for energy-efficient membrane treatment systems.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"399 ","pages":"Article 128637"},"PeriodicalIF":8.4,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Pub Date : 2026-01-15DOI: 10.1016/j.jenvman.2026.128640
Xiding Zeng , Wei Zhang , Ruiwen Zou , Jiahong Guo , Kun Yang , Zhangyu Li
Wastewater treatment plants (WWTPs) face challenges of low energy efficiency and high costs. Existing energy dispatch strategies lack adaptability to the specific processes and constraints of WWTPs. To address these challenges, this study introduces a novel integrated energy system (IES) for WWTPs that harmonizes process-specific demands with renewable energy integration, emphasizing hierarchical treatment-stage optimization and influent flow on energy scheduling. The proposed IES uniquely embeds photovoltaic electro-Fenton (PV-EF) technology into advanced treatment processes, enabling dual electricity-thermal output to drive electrochemical degradation while recovering waste heat for enhanced reaction kinetics. A segmented optimization framework dynamically aligns energy dispatch with primary physical, secondary (PV-EF assisted biological treatment), and tertiary (disinfection) treatment stages, incorporating adaptive load adjustments for aeration, pumping, and electrolysis. A multi-objective model effectively balances economic costs, energy efficiency, and grid stability under uncertainty, utilizing demand response for real-time pump scheduling and thermal storage. Validation through a 40,000 m3/d WWTP case study demonstrates transformative outcomes: the photovoltaic electro-Fenton process reduces energy consumption by 22 %, supplies 2000 kW of thermal load during peak solar hours (9:00–16:00), and achieves near-zero grid dependency during daylight hours. Multi-objective normalized optimization strategy reduces operating costs by 9 % (winter) and 2.83 % (summer) while renewable energy utilization increases by 8 %. This work establishes a scalable blueprint for decarbonizing WWTPs through technology-process co-design, offering actionable insights for achieving sustainability in the energy-water-carbon nexus within urban infrastructure.
{"title":"Integrated multistage process optimization and photovoltaic electro-fenton synergy for enhanced efficiency and energy savings in wastewater treatment","authors":"Xiding Zeng , Wei Zhang , Ruiwen Zou , Jiahong Guo , Kun Yang , Zhangyu Li","doi":"10.1016/j.jenvman.2026.128640","DOIUrl":"10.1016/j.jenvman.2026.128640","url":null,"abstract":"<div><div>Wastewater treatment plants (WWTPs) face challenges of low energy efficiency and high costs. Existing energy dispatch strategies lack adaptability to the specific processes and constraints of WWTPs. To address these challenges, this study introduces a novel integrated energy system (IES) for WWTPs that harmonizes process-specific demands with renewable energy integration, emphasizing hierarchical treatment-stage optimization and influent flow on energy scheduling. The proposed IES uniquely embeds photovoltaic electro-Fenton (PV-EF) technology into advanced treatment processes, enabling dual electricity-thermal output to drive electrochemical degradation while recovering waste heat for enhanced reaction kinetics. A segmented optimization framework dynamically aligns energy dispatch with primary physical, secondary (PV-EF assisted biological treatment), and tertiary (disinfection) treatment stages, incorporating adaptive load adjustments for aeration, pumping, and electrolysis. A multi-objective model effectively balances economic costs, energy efficiency, and grid stability under uncertainty, utilizing demand response for real-time pump scheduling and thermal storage. Validation through a 40,000 m<sup>3</sup>/d WWTP case study demonstrates transformative outcomes: the photovoltaic electro-Fenton process reduces energy consumption by 22 %, supplies 2000 kW of thermal load during peak solar hours (9:00–16:00), and achieves near-zero grid dependency during daylight hours. Multi-objective normalized optimization strategy reduces operating costs by 9 % (winter) and 2.83 % (summer) while renewable energy utilization increases by 8 %. This work establishes a scalable blueprint for decarbonizing WWTPs through technology-process co-design, offering actionable insights for achieving sustainability in the energy-water-carbon nexus within urban infrastructure.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"399 ","pages":"Article 128640"},"PeriodicalIF":8.4,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Pub Date : 2026-01-15DOI: 10.1016/j.jenvman.2025.128493
Maria Val Martin , Leah M. Holland , Paul Brindley
Urban environmental inequalities remain a critical public health concern in the UK, particularly in regions with legacies of industrial development. This study examines the spatial distribution of air pollution (NO2) and greenspace exposure across ten cities in Northern England, focusing on urban neighborhoods. Using Lower-layer Super Output Areas (LSOAs) and data from the Access to Healthy Assets & Hazards and Index of Multiple Deprivation, we compare environmental burdens across two city types: large, industrial-era conurbations (Major cities) and smaller cities more influence by rural-to-urban transition (Regional cities).
Our results show that in urban areas of Major cities, deprived and ethnically diverse communities face significantly higher NO2 concentrations and lower NDVI, a measure of greenspace density and health, despite physical proximity to green areas. In the most deprived LSOAs, NO2 levels are 33 % higher than in the least deprived, more than twice the national average disparity. While greenspace accessibility is often greater in deprived areas, these spaces are frequently located near major roads or pollution hotspots, limiting their health benefits. About 83 % of the most vegetated urban areas in Major cities still exceed WHO NO2 guidelines, highlighting the limited capacity of greenspace alone to mitigate pollution in dense, traffic-dominated environments. In contrast, urban areas in Regional cities show lower pollution and more consistent greenspace provision, with fewer social disparities.
These findings highlight the need for targeted, locally informed strategies that combine green infrastructure with robust emissions reduction, particularly in cities with dense industrial legacies. As the UK seeks to deliver on the goals of its Clean Air Strategy and 25-Year Environment Plan, understanding how environmental burdens are associated with social inequality and urban form at the local level will be essential for designing fairer, healthier cities and meeting broader Agenda 2030 commitments.
{"title":"Greenspace and air pollution disparities in urban Northern England","authors":"Maria Val Martin , Leah M. Holland , Paul Brindley","doi":"10.1016/j.jenvman.2025.128493","DOIUrl":"10.1016/j.jenvman.2025.128493","url":null,"abstract":"<div><div>Urban environmental inequalities remain a critical public health concern in the UK, particularly in regions with legacies of industrial development. This study examines the spatial distribution of air pollution (NO<sub>2</sub>) and greenspace exposure across ten cities in Northern England, focusing on urban neighborhoods. Using Lower-layer Super Output Areas (LSOAs) and data from the Access to Healthy Assets & Hazards and Index of Multiple Deprivation, we compare environmental burdens across two city types: large, industrial-era conurbations (Major cities) and smaller cities more influence by rural-to-urban transition (Regional cities).</div><div>Our results show that in urban areas of Major cities, deprived and ethnically diverse communities face significantly higher NO<sub>2</sub> concentrations and lower NDVI, a measure of greenspace density and health, despite physical proximity to green areas. In the most deprived LSOAs, NO<sub>2</sub> levels are 33 % higher than in the least deprived, more than twice the national average disparity. While greenspace accessibility is often greater in deprived areas, these spaces are frequently located near major roads or pollution hotspots, limiting their health benefits. About 83 % of the most vegetated urban areas in Major cities still exceed WHO NO<sub>2</sub> guidelines, highlighting the limited capacity of greenspace alone to mitigate pollution in dense, traffic-dominated environments. In contrast, urban areas in Regional cities show lower pollution and more consistent greenspace provision, with fewer social disparities.</div><div>These findings highlight the need for targeted, locally informed strategies that combine green infrastructure with robust emissions reduction, particularly in cities with dense industrial legacies. As the UK seeks to deliver on the goals of its Clean Air Strategy and 25-Year Environment Plan, understanding how environmental burdens are associated with social inequality and urban form at the local level will be essential for designing fairer, healthier cities and meeting broader Agenda 2030 commitments.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"399 ","pages":"Article 128493"},"PeriodicalIF":8.4,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Pub Date : 2026-01-15DOI: 10.1016/j.jenvman.2026.128626
Tatiana A. Vereshchagina , Ekaterina A. Kutikhina , Elena V. Fomenko , Sergei N. Vereshchagin , Leonid A. Solovyov , Anton A. Belov , Oleg O. Shichalin
The novel approach to high-tech application of CFA particulate matter (PM, dispersed microspheres) generated at coal-burning thermal power plants was highlighted as a resource-saving and energy-efficient method to solidify 135,137Cs-bearing radioactive waste in mineral-like ceramics based on feldspathoid phases suitable for disposal in igneous rocks. The specific novelty of using dispersed microspheres lies in their size (<10 μm), which is a key technological variable in ceramic production. The combination of fine particle sizing with required composition (SiO2/Al2O3 = 1.2−3.5) was a prerequisite for PM involvement in 135,137Cs ceramization. To fabricate initial precursors, two microsphere fractions (PM2.5 and PM10) having close SiO2/Al2O3 ratios (2.2 and 2.7) but different size distributions (dmax of 2.5 and 9.9 μm) were isolated from CFA by applying aerodynamic and magnetic classifications. The Cs-bearing aluminosilicate precursors (Cs-PM2.5 and Cs-PM10) were prepared by impregnation of the microspheres with CsNO3 solution followed by drying and calcination at 800 °C. To fabricate ceramics, the Cs-PM blends were consolidated by the spar plasma sintering (SPS) at 700, 800 and 900 °C and pressure of 30 MPa. The PXRD, SEM-EDS analyses, measurements of density and Vickers microhardness, evaluation of the cesium leaching rate were performed to characterize the resulted ceramic materials. As established, the SPS fabricated ceramics for both precursors is the high-density (2.7−2.9 g/cm3) material composed of pollucite and Cs-kalsilite phases. Its hydrolytical stability is confirmed by the low cesium leaching rates (R ∼ 10−5−10−6 g/cm2⋅day), which meets the requirements of GOST R 50,926–96 and NP-019-2000 standards for solidified high-level waste.
{"title":"SPS fabrication of mineral-like ceramics sourced by coal fly ash microspheres for 137Cs ultimate disposal in igneous rocks","authors":"Tatiana A. Vereshchagina , Ekaterina A. Kutikhina , Elena V. Fomenko , Sergei N. Vereshchagin , Leonid A. Solovyov , Anton A. Belov , Oleg O. Shichalin","doi":"10.1016/j.jenvman.2026.128626","DOIUrl":"10.1016/j.jenvman.2026.128626","url":null,"abstract":"<div><div>The novel approach to high-tech application of CFA particulate matter (PM, dispersed microspheres) generated at coal-burning thermal power plants was highlighted as a resource-saving and energy-efficient method to solidify <sup>135,137</sup>Cs-bearing radioactive waste in mineral-like ceramics based on feldspathoid phases suitable for disposal in igneous rocks. The specific novelty of using dispersed microspheres lies in their size (<10 μm), which is a key technological variable in ceramic production. The combination of fine particle sizing with required composition (SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> = 1.2−3.5) was a prerequisite for PM involvement in <sup>135,137</sup>Cs ceramization. To fabricate initial precursors, two microsphere fractions (PM2.5 and PM10) having close SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios (2.2 and 2.7) but different size distributions (d<sub>max</sub> of 2.5 and 9.9 μm) were isolated from CFA by applying aerodynamic and magnetic classifications. The Cs-bearing aluminosilicate precursors (Cs-PM2.5 and Cs-PM10) were prepared by impregnation of the microspheres with CsNO<sub>3</sub> solution followed by drying and calcination at 800 °C. To fabricate ceramics, the Cs-PM blends were consolidated by the spar plasma sintering (SPS) at 700, 800 and 900 °C and pressure of 30 MPa. The PXRD, SEM-EDS analyses, measurements of density and Vickers microhardness, evaluation of the cesium leaching rate were performed to characterize the resulted ceramic materials. As established, the SPS fabricated ceramics for both precursors is the high-density (2.7−2.9 g/cm<sup>3</sup>) material composed of pollucite and Cs-kalsilite phases. Its hydrolytical stability is confirmed by the low cesium leaching rates (R ∼ 10<sup>−5</sup>−10<sup>−6</sup> g/cm<sup>2</sup>⋅day), which meets the requirements of GOST R 50,926–96 and NP-019-2000 standards for solidified high-level waste.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"399 ","pages":"Article 128626"},"PeriodicalIF":8.4,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Pub Date : 2026-01-15DOI: 10.1016/j.jenvman.2026.128603
Rasoul Keshmiri-Naqab, Mohsen Taghavijeloudar
{"title":"Retraction notice to \"Could organoclay be used as a promising natural adsorbent for efficient and cost-effective dye wastewater treatment?\" [J. Environ. Manag. 342 (2023) 118322].","authors":"Rasoul Keshmiri-Naqab, Mohsen Taghavijeloudar","doi":"10.1016/j.jenvman.2026.128603","DOIUrl":"https://doi.org/10.1016/j.jenvman.2026.128603","url":null,"abstract":"","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":" ","pages":"128603"},"PeriodicalIF":8.4,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Pub Date : 2026-01-15DOI: 10.1016/j.jenvman.2026.128616
Robson Borges de Lima , Cinthia Pereira de Oliveira , Diego Armando S. da Silva , Daniela Granato-Souza , Lorrayne Aparecida Gonçalves , Caroline C. Vasconcelos , Anderson Pedro B. Batista , João Ramos de Matos Filho , Joselane P. Gomes da Silva , Perseu da Silva Aparício , Carla S. Campelo de Souza , Jadson Coelho de Abreu , Iran Jorge Correa Lopes , Jean Pierre Ometto , Eric Bastos Görgens
Giant trees in the Amazon serve as critical carbon sinks and underpin diverse forest ecosystems. Yet, these emergent giants are increasingly vulnerable to climatic change, jeopardizing their distribution and ecological niches. Here, we integrate ecological niche modeling with LiDAR, forest inventory, global repository data, and bioclimatic variables to reconstruct and forecast the distribution of Amazonian giant trees under past, present, and future climate scenarios (SSP1-2.6 and SSP5-8.5) across multiple biogeographic provinces. Employing MARS, Random Forest, MaxEnt, and GAM algorithms, we assess the influence of key climatic drivers, such as isothermality, maximum temperatures, and precipitation patterns, on habitat suitability for two emblematic species: Dinizia excelsa and Goupia glabra. Our analyses reveal that while both species exhibit distinct climatic responses, Tall trees obtained by LiDAR and Dinizia excelsa are particularly sensitive to heightened temperature extremes, notably in the Guiana Shield and Roraima Provinces. In contrast, Goupia glabra displays a broader tolerance to precipitation variability. Under the high-emission scenario (SSP5-8.5), projections indicate a loss of up to 45 % of suitable habitat by 2080, especially in southern provinces such as Xingu-Tapajós, where drought frequency and temperature extremes are expected to intensify. Conversely, the low-emission scenario (SSP1-2.6) may foster habitat stability or modest expansion in the northern Amazon. These findings underscore the urgent need for targeted conservation strategies to safeguard critical refugia and enhance ecosystem resilience in the face of global climate change.
{"title":"Warmer climate threatens the occurrence of giant trees in the Amazon basin","authors":"Robson Borges de Lima , Cinthia Pereira de Oliveira , Diego Armando S. da Silva , Daniela Granato-Souza , Lorrayne Aparecida Gonçalves , Caroline C. Vasconcelos , Anderson Pedro B. Batista , João Ramos de Matos Filho , Joselane P. Gomes da Silva , Perseu da Silva Aparício , Carla S. Campelo de Souza , Jadson Coelho de Abreu , Iran Jorge Correa Lopes , Jean Pierre Ometto , Eric Bastos Görgens","doi":"10.1016/j.jenvman.2026.128616","DOIUrl":"10.1016/j.jenvman.2026.128616","url":null,"abstract":"<div><div>Giant trees in the Amazon serve as critical carbon sinks and underpin diverse forest ecosystems. Yet, these emergent giants are increasingly vulnerable to climatic change, jeopardizing their distribution and ecological niches. Here, we integrate ecological niche modeling with LiDAR, forest inventory, global repository data, and bioclimatic variables to reconstruct and forecast the distribution of Amazonian giant trees under past, present, and future climate scenarios (SSP1-2.6 and SSP5-8.5) across multiple biogeographic provinces. Employing MARS, Random Forest, MaxEnt, and GAM algorithms, we assess the influence of key climatic drivers, such as isothermality, maximum temperatures, and precipitation patterns, on habitat suitability for two emblematic species: <em>Dinizia excelsa</em> and <em>Goupia glabra</em>. Our analyses reveal that while both species exhibit distinct climatic responses, Tall trees obtained by LiDAR and <em>Dinizia excelsa</em> are particularly sensitive to heightened temperature extremes, notably in the Guiana Shield and Roraima Provinces. In contrast, <em>Goupia glabra</em> displays a broader tolerance to precipitation variability. Under the high-emission scenario (SSP5-8.5), projections indicate a loss of up to 45 % of suitable habitat by 2080, especially in southern provinces such as Xingu-Tapajós, where drought frequency and temperature extremes are expected to intensify. Conversely, the low-emission scenario (SSP1-2.6) may foster habitat stability or modest expansion in the northern Amazon. These findings underscore the urgent need for targeted conservation strategies to safeguard critical refugia and enhance ecosystem resilience in the face of global climate change.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"399 ","pages":"Article 128616"},"PeriodicalIF":8.4,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Pub Date : 2026-01-15DOI: 10.1016/j.jenvman.2026.128655
Shanshan Sun , Decao Niu , Maowei Liang , Peng Lv , Shenglong Zhao , Yulin Li , Xiaoan Zuo
Livestock grazing has been shown to shape the biodiversity of grasslands, thereby impacting ecosystem stability. Overgrazing may promote the encroachment of shrubs into these habitats through niche partitioning, specifically differences in above-versus below-ground resource usage between woody and herbaceous plants. However, grazing effects on grassland stability remains under-researched, with a paucity of comprehensive empirical studies. In our study, we conducted a seven-year sheep grazing experiment in a desert steppe of northern China. We specifically compared two habitat types: grass-dominated and shrub-encroached, aiming to discern the effects of varying grazing intensities on the stability of aboveground, belowground, and total biomass. Our results indicated that grazing increased the community-weighted mean (CWM) of fast-slow traits and reduced the species asynchrony in grass-dominated habitat, while elevated relative abundance of dominant species and reduced functional dispersion and soil property in shrub-encroached habitat. Increasing grazing intensity diminished the stability of aboveground and belowground biomass within grass-dominated habitat, without significant changes to stability of belowground biomass in shrub-encroached habitat. The CWM Fast-slow traits in grass-dominated habitat and the dominant species abundance of Reaumuria songarica in shrub-encroached habitat were negatively correlated with the stability of aboveground biomass. Thus, while grazing indirectly decreased community stability through elevating CWM Fast-slow traits in grass-dominated habitat, grazing impacted community stability in shrub-encroached habitat via increasing the dominant species abundance of R. songarica, with consequent influences on species asynchrony and stability. Together, our two-habitats experiment highlights the importance of conserving different facets of biodiversity for sustainably providing ecosystem functions and services in arid grazing grasslands.
{"title":"Multiple facets of biodiversity decipher grazing effects on ecosystem stability in shrub-encroached grassland","authors":"Shanshan Sun , Decao Niu , Maowei Liang , Peng Lv , Shenglong Zhao , Yulin Li , Xiaoan Zuo","doi":"10.1016/j.jenvman.2026.128655","DOIUrl":"10.1016/j.jenvman.2026.128655","url":null,"abstract":"<div><div>Livestock grazing has been shown to shape the biodiversity of grasslands, thereby impacting ecosystem stability. Overgrazing may promote the encroachment of shrubs into these habitats through niche partitioning, specifically differences in above-versus below-ground resource usage between woody and herbaceous plants. However, grazing effects on grassland stability remains under-researched, with a paucity of comprehensive empirical studies. In our study, we conducted a seven-year sheep grazing experiment in a desert steppe of northern China. We specifically compared two habitat types: grass-dominated and shrub-encroached, aiming to discern the effects of varying grazing intensities on the stability of aboveground, belowground, and total biomass. Our results indicated that grazing increased the community-weighted mean (CWM) of fast-slow traits and reduced the species asynchrony in grass-dominated habitat, while elevated relative abundance of dominant species and reduced functional dispersion and soil property in shrub-encroached habitat. Increasing grazing intensity diminished the stability of aboveground and belowground biomass within grass-dominated habitat, without significant changes to stability of belowground biomass in shrub-encroached habitat. The CWM Fast-slow traits in grass-dominated habitat and the dominant species abundance of <em>Reaumuria songarica</em> in shrub-encroached habitat were negatively correlated with the stability of aboveground biomass. Thus, while grazing indirectly decreased community stability through elevating CWM Fast-slow traits in grass-dominated habitat, grazing impacted community stability in shrub-encroached habitat via increasing the dominant species abundance of <em>R. songarica</em>, with consequent influences on species asynchrony and stability. Together, our two-habitats experiment highlights the importance of conserving different facets of biodiversity for sustainably providing ecosystem functions and services in arid grazing grasslands.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"399 ","pages":"Article 128655"},"PeriodicalIF":8.4,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
Pub Date : 2026-01-15DOI: 10.1016/j.jenvman.2026.128641
Zhixue Zhang , Juncheng Li , Chengwan Wang , Anli Liu , Xin Li , Qinmei Zhong , Xian Wu , Yue Yuan , Sheng-Tao Yang
Antibiotics are among the most important emerging contaminants, which present in medical waste water, livestock wastewater and domestic sewage. Leveraging the multifunctional groups and superior electron diffusion of carbon dots (C-dots), we developed a C-dots modified micron-scale iron-copper bimetals (mFe/C/Cu) for highly efficient degradation of sulfamethoxazole (SMX). With an optimal C-dots loading of 0.5 %, the mFe/0.5 %C/Cu system achieved a 92.7 % removal of SMX within 30 min, significantly outperforming mFe/Cu (72.5 %) and mFe (51.0 %), and maintained over 90 % efficiency in real water matrices. Electron paramagnetic resonance (EPR) and quenching experiments confirmed that mFe/0.5 %C/Cu generated superoxide radicals (O2•-) and hydrogen radicals (H∗) via a one-electron pathway. Oxygen temperature-programmed desorption and density functional theory calculations further revealed that mFe/0.5 %C/Cu effectively activated O2 to yield reactive oxygen species, whereas mFe/Cu and mFe underwent mainly oxidative passivation. The synergy between O2•- and H∗ enabled a novel SMX degradation route involving cleavage of the isoxazole ring into smaller molecular fragments. Electrochemical impedance spectroscopy and XPS analysis provided direct evidence that C-dots modulated the electron transfer mode, reducing charge-transfer resistance and promoting Fe2+ and Cu + regeneration, thereby significantly enhancing electron utilization efficiency. This work demonstrates the key role of C-dots in boosting the performance of iron-based materials for aquatic pollutant remediation.
{"title":"High performance and unique mechanism of carbon dots modified iron-copper bimetals for antibiotics degradation","authors":"Zhixue Zhang , Juncheng Li , Chengwan Wang , Anli Liu , Xin Li , Qinmei Zhong , Xian Wu , Yue Yuan , Sheng-Tao Yang","doi":"10.1016/j.jenvman.2026.128641","DOIUrl":"10.1016/j.jenvman.2026.128641","url":null,"abstract":"<div><div>Antibiotics are among the most important emerging contaminants, which present in medical waste water, livestock wastewater and domestic sewage. Leveraging the multifunctional groups and superior electron diffusion of carbon dots (C-dots), we developed a C-dots modified micron-scale iron-copper bimetals (mFe/C/Cu) for highly efficient degradation of sulfamethoxazole (SMX). With an optimal C-dots loading of 0.5 %, the mFe/0.5 %C/Cu system achieved a 92.7 % removal of SMX within 30 min, significantly outperforming mFe/Cu (72.5 %) and mFe (51.0 %), and maintained over 90 % efficiency in real water matrices. Electron paramagnetic resonance (EPR) and quenching experiments confirmed that mFe/0.5 %C/Cu generated superoxide radicals (O<sub>2</sub><sup>•-</sup>) and hydrogen radicals (H∗) via a one-electron pathway. Oxygen temperature-programmed desorption and density functional theory calculations further revealed that mFe/0.5 %C/Cu effectively activated O<sub>2</sub> to yield reactive oxygen species, whereas mFe/Cu and mFe underwent mainly oxidative passivation. The synergy between O<sub>2</sub><sup>•-</sup> and H∗ enabled a novel SMX degradation route involving cleavage of the isoxazole ring into smaller molecular fragments. Electrochemical impedance spectroscopy and XPS analysis provided direct evidence that C-dots modulated the electron transfer mode, reducing charge-transfer resistance and promoting Fe<sup>2+</sup> and Cu <sup>+</sup> regeneration, thereby significantly enhancing electron utilization efficiency. This work demonstrates the key role of C-dots in boosting the performance of iron-based materials for aquatic pollutant remediation.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"399 ","pages":"Article 128641"},"PeriodicalIF":8.4,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
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