环境科学与生态学最新文献

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Transformation of organic matter under anoxic conditions in soils
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2025-03-03 DOI: 10.1016/j.scitotenv.2025.178899
S.M. Pyzola, P. Dhakal, M.S. Coyne, J.H. Grove, M.M. Vandiviere, C.J. Matocha
{"title":"Transformation of organic matter under anoxic conditions in soils","authors":"S.M. Pyzola,&nbsp;P. Dhakal,&nbsp;M.S. Coyne,&nbsp;J.H. Grove,&nbsp;M.M. Vandiviere,&nbsp;C.J. Matocha","doi":"10.1016/j.scitotenv.2025.178899","DOIUrl":"10.1016/j.scitotenv.2025.178899","url":null,"abstract":"<div><div>The transformation of organic matter under anoxic conditions is mediated by hydrolysis and fermentation processes resulting in products such as acetate and hydrogen which are then utilized by microorganisms in respiration. Respiring microorganisms employ an array of electron acceptors in soils, including nitrate, manganese(IV), iron(III), and sulfate, which are consumed depending on availability and decreasing Gibbs free energy yield. The classical view is that respiration is more rapid than fermentation and these two processes do not co-occur, however, evidence has mounted to challenge this view. In addition, it is unclear how the production of ammonium during ammonification of soil organic nitrogen is intertwined with fermentation and respiration. Accordingly, stirred-batch microcosms were incubated to quantify relevant chemical species over time (acetate, nitrate, iron(II), manganese(II), and ammonium) using native terminal electron acceptors (TEAs) and soil organic matter in four soils varying in drainage status under anoxic conditions. The net rate of acetate production in one of the moderately well-drained (Sadler) soils was 1.1 ± 0.07 μmol g<sup>−1</sup> d<sup>−1</sup>, which was similar to Mn(II) accumulation rates (0.95 ± 0.3 μmol g<sup>−1</sup> d<sup>−1</sup>, <em>P</em> = 0.57). A similar trend was observed in the well-drained (Feliciana) soil, indicating that Mn(IV) respiration and fermentation can co-occur in certain soils. In the other moderately well drained and the poorly drained soil, acetate production was suppressed due in part to elevated native nitrate levels, which raised the redox potential and acted as a competitive electron acceptor. Across all four soils, ammonification rates were positively correlated with acetate formation rates (<em>r</em> = 0.88, <em>P</em> &lt; 0.001), suggesting the possibility of amino acid fermentation during these anoxic incubations. These results challenge the current paradigm that the fermentation step in anoxic organic matter decomposition is slow and Mn(IV) respiration is rapid, with implications for organic matter transformations and nutrient cycling.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"970 ","pages":"Article 178899"},"PeriodicalIF":8.2,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529478","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
Optimization of anode positioning in constructed wetlands coupled with microbial fuel cells based on C/O microenvironment for simultaneous removal of disinfection by-products and nitrogen
IF 13.6 1区 环境科学与生态学
Journal of Hazardous Materials Pub Date : 2025-03-03 DOI: 10.1016/j.jhazmat.2025.137826
Jiawei Xie, Xue Wu, Liming Zhang, Fei Zhong, Shuiping Cheng
{"title":"Optimization of anode positioning in constructed wetlands coupled with microbial fuel cells based on C/O microenvironment for simultaneous removal of disinfection by-products and nitrogen","authors":"Jiawei Xie, Xue Wu, Liming Zhang, Fei Zhong, Shuiping Cheng","doi":"10.1016/j.jhazmat.2025.137826","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.137826","url":null,"abstract":"Constructed wetland coupled with microbial fuel cell (CW-MFC) has been applied for the advanced removal of emerging contaminants and nitrogen due to its sustainability potential. However, the impact of anode positioning on the synergistic removal of disinfection by-products (DBPs) and nitrogen in CW-MFC remains insufficiently understood. In this study, three CW-MFCs with different anode positions were constructed to explore the response differences in the removal of DBPs (represented by haloacetic acids-HAAs) and nitrogen. It was observed that the CW-MFC with the anode positioned centrally exhibited considerable nitrogen removal (TN removal efficiency: 56.3 ± 8.6%) and HAAs degradation performance (dichloroacetic acid removal efficiency: 97.8 ± 1.3%). Correlation analysis identified the advantageous carbon-oxygen environment at the anode as the most critical factor. Furthermore, this carbon-oxygen environment (COD<sub>cr</sub>/DO=27.7) directly provided favorable conditions for electroactive bacteria to inhabit the anode, significantly enriching denitrifiers and HAAs-degrading bacteria at the cathode. Key genes (HAAs and carbon-nitrogen metabolic) were upregulated, clarifying the mechanisms of synergistic removal of HAAs and nitrogen in CW-MFCs with centrally positioned anodes. This study highlights the importance of CW-MFCs with anode positioning in the synergistic removal of DBPs and nitrogen, providing straightforward and feasible strategy for optimizing CW-MFC performance and scaling up.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"130 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143532359","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
Identification of cell-surface receptors associated with 6-PPD quinone-induced reproductive toxicity in Caenorhabditis elegans after long-term and low-dose exposure: A primordial response including sword effect and shield effect
IF 13.6 1区 环境科学与生态学
Journal of Hazardous Materials Pub Date : 2025-03-03 DOI: 10.1016/j.jhazmat.2025.137821
Shuhan Lei, Huanliang Liu, Bing Zhang, Ailing Chen, Xiaona Li, Yu Wu, Zhenyu Wang
{"title":"Identification of cell-surface receptors associated with 6-PPD quinone-induced reproductive toxicity in Caenorhabditis elegans after long-term and low-dose exposure: A primordial response including sword effect and shield effect","authors":"Shuhan Lei, Huanliang Liu, Bing Zhang, Ailing Chen, Xiaona Li, Yu Wu, Zhenyu Wang","doi":"10.1016/j.jhazmat.2025.137821","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.137821","url":null,"abstract":"6-PPD quinone (6-PPDQ) has been frequently detected in different environmental matrices and widely identified as causing reproductive toxicity. However, the molecular initiation events of the reproductive toxicity induced by 6-PPDQ exposure, the primordial response, remain largely unknown. This study focused on investigating the primordial response induced by cell-surface receptors localized in the epidermis and intestine of 6-PPDQ exposure on reproductive toxicity. 7 cell-surface receptors were recognized to control the 6-PPDQ-induced reproductive toxicity. The epidermal cell-surface receptors (DCAR-1 and DAF-4) mainly mediated the primordial response by enhancing epidermal innate immune response or reproductive aging, and the intestinal cell-surface receptors (SER-5, FSHR-1, GON-2, DAF-2, and EGL-15) mainly mediated the primordial response by inducing oxidative stress or intestinal innate immune response. In epidermis, DAF-4 mediated “sword effect” and DCAR-1 mediated “shield effect” in response to the primordial response of the 6-PPDQ-induced reproductive toxicity. In intestine, SER-5, DAF-2, EGL-15, and GON-2 mediated “sword effect” and FSHR-1 mediated “shield effect” in response to the primordial response of the 6-PPDQ-induced reproductive toxicity. This study provides the “first station” of the effect of long-time 6-PPDQ exposure at environmentally relevant concentrations on reproductive capacity in organisms.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"84 5 Pt 1 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143532363","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
Investigation on the reactive transport characteristic of uranium-bearing sandstone during the in-situ leaching mining uranium
IF 1.9 3区 环境科学与生态学
Journal of environmental radioactivity Pub Date : 2025-03-03 DOI: 10.1016/j.jenvrad.2025.107654
Xuebin Su , Junlin Mao , Tong Zhang , Xin Yang , Yihan Yang , Chuanfei Zhang , Peng Qiao , Bingzhang Li , Fan Chen
{"title":"Investigation on the reactive transport characteristic of uranium-bearing sandstone during the in-situ leaching mining uranium","authors":"Xuebin Su ,&nbsp;Junlin Mao ,&nbsp;Tong Zhang ,&nbsp;Xin Yang ,&nbsp;Yihan Yang ,&nbsp;Chuanfei Zhang ,&nbsp;Peng Qiao ,&nbsp;Bingzhang Li ,&nbsp;Fan Chen","doi":"10.1016/j.jenvrad.2025.107654","DOIUrl":"10.1016/j.jenvrad.2025.107654","url":null,"abstract":"<div><div>The multi-phase flow in dynamic pore-fracture is crucial to the safety and efficient uranium mining using the in-situ leaching method. In this study, the pore-fracture evolution and multi-phase flow morphology was investigated using the online low-field nuclear magnetic resonance (NMR) system, and the relationship of pore structure, permeability transformation and chemical reaction was analyzed. The results show that the adsorption pore (0.1 ms &lt; AP &lt; 10 ms,46.4%), seepage pore (10 ms &lt; SP &lt; 100 ms,36.6%) and migration pore (100 ms &lt; MP,17.0%) composed the pore-fracture structure, and the chemical corrosion increased the AP, the decreased SP was mainly controlled by the carbonatite precipitation, and MP was enhanced by the dynamic fluid pressure and decreased by the carbonatite precipitation. Compared with the increased permeability of uranium dissolution-dependent pore structure, the carbonatite precipitation-dependent pore structure dominated the decreased permeability during the in-situ leaching. The increased effect on permeability and mineral dissolution for dynamic pressure was gradually weakened by the carbonatite precipitation. Thus, the uranium dissolution was mainly occurred at AP, the uranium-bearing solution migration was controlled by SP, and carbonatite precipitation was occurred at MP. The transformation between the AP, SP and MP was integral dominated by the corrosion dissolution, carbonatite precipitation and fluid kinetics, resulting in the decrease of SP and permeability. The variation in uranium concentration from 0.1 MPa to 0.7 MPa indicates that uranium dissolution and migration in the in-situ leaching process are primarily governed by the interplay of pressure, fluid dynamics, and carbonate precipitation. At lower pressures, enhanced uranium dissolution facilitates greater mobility. However, as pressure increases, carbonate precipitation intensifies, significantly hindering uranium migration and resulting in a marked decrease in uranium concentration. Thus, the conductivity of the uranium-bearing sandstone characterized by the permeability was directly dominated by the SP. The finding provides significant insight into safety and efficiency in-situ leaching uranium mining.</div></div>","PeriodicalId":15667,"journal":{"name":"Journal of environmental radioactivity","volume":"284 ","pages":"Article 107654"},"PeriodicalIF":1.9,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Complex and Dynamic Effects of an Extreme Low Temperature Weather Event on Invasive Plant Populations and Resident Communities
IF 10.8 1区 环境科学与生态学
Global Change Biology Pub Date : 2025-03-03 DOI: 10.1111/gcb.70113
Maurício Cruz Mantoani, Conor Sweeney, Bruce A. Osborne
{"title":"Complex and Dynamic Effects of an Extreme Low Temperature Weather Event on Invasive Plant Populations and Resident Communities","authors":"Maurício Cruz Mantoani,&nbsp;Conor Sweeney,&nbsp;Bruce A. Osborne","doi":"10.1111/gcb.70113","DOIUrl":"https://doi.org/10.1111/gcb.70113","url":null,"abstract":"<p>Whilst it is often assumed that invasive plant species may benefit more from climate change than native species, there is little empirical data on how they, and the communities they invade, respond to extreme weather events (EWEs). Here, we show that the effects of a low temperature EWE can result in a dramatic reduction in both vegetative and reproductive growth of invasive populations of <i>Gunnera tinctoria</i>, although a significant recovery was found within 1 year after its occurrence. Whilst the EWE decreased both the leaf/petiole numbers of mature plants, the major impact was on leaf expansion and a decrease in the size/number of inflorescences. Concomitant with the reduction in growth of <i>G. tinctoria</i>, there was a 5-fold increase in the number of resident species emerging in invaded areas, which largely persisted after the recovery of the invasive populations. Although the growth of <i>G. tinctoria</i> seedlings was also reduced, this was relatively small, and growth and development resumed almost immediately after the EWE. In comparison, the resident plant community was largely unaffected by the EWE either due to the later initiation of growth and/or because of their greater resilience to episodic low temperature events. Our results show that an EWE of this magnitude can have complex time-dependent effects on plant invasions and invaded communities, with a greater impact on the established invasive plants compared to newly recruited seedlings. Based on an assessment of historical climatic data, these long-lived populations have been exposed to EWEs of a similar or greater magnitude in the past, which have not constrained their spread or compromised recruitment. Given the likelihood of an almost complete absence of low temperature EWEs of similar magnitude in the future, any temporary restrictions on the growth of invasive <i>G. tinctoria</i> and other similar invasive species populations are likely to be small.</p>","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":"31 3","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/gcb.70113","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantitative assessment of past variations in Sphagnum bog community structure using paleo-species distribution modeling
IF 4.4 2区 环境科学与生态学
Ecology Pub Date : 2025-03-03 DOI: 10.1002/ecy.70033
Eleonor E. S. Ryberg, Alicia Valdés, Johan Ehrlén, Minna Väliranta, Malin E. Kylander
{"title":"Quantitative assessment of past variations in Sphagnum bog community structure using paleo-species distribution modeling","authors":"Eleonor E. S. Ryberg,&nbsp;Alicia Valdés,&nbsp;Johan Ehrlén,&nbsp;Minna Väliranta,&nbsp;Malin E. Kylander","doi":"10.1002/ecy.70033","DOIUrl":"https://doi.org/10.1002/ecy.70033","url":null,"abstract":"<p>A common approach to investigating species' niches is to examine relationships between spatial variation in environmental conditions and contemporary species occurrences, using species distribution models (SDM or niche models). The relationships between past species distributions and environmental variation over time are less commonly explored. One way to examine effects on species changes over time is to use paleo-datasets to parameterize niche models, where the use of temporal variation allows for making more direct links between past species and environmental conditions through records of past changes. We examined the impact of five environmental variables (temperature, incidence of external nutrient input, local [within bog] moisture, incidence of regionally dry periods, and fire activity) on temporal variation in peatland species composition, occurrences, and abundances (<i>Sphagnum</i>, <i>Eriophorum</i>, <i>Carex</i>, and Ericaceous dwarf shrubs) using a high-resolution peat macrofossil paleo-record spanning the last ~10,000 years from the Store Mosse bog (south-central Sweden). Our results showed that species composition was affected by external nutrient input, local moisture conditions and incidence of regionally dry conditions. The presence and abundance of different species groups were mainly affected by external nutrient input and the incidence of regionally dry periods. Moreover, hummock <i>Sphagna</i> benefited from external nutrient input and low moisture, and in one species, warmer temperatures. Intermediate <i>Sphagna</i> from cooler temperatures with no external nutrient input, and hollow <i>Sphagna</i> from cooler temperatures and external nutrient input. Lastly, our results showed that environmental effects differed between the successional stages of the peatland in one case. Overall, the observed species' responses imply that peatland carbon dynamics will shift with future changes in climate. By examining links between climate and species responses of the past, this study demonstrates that the paleo-data approach in SDMs can contribute to a better understanding of the environmental effects influencing species distributions on longer time scales, thereby providing a valuable tool to improve predictions of future climate change effects.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 3","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ecy.70033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating Genetic Diversity in Hatchery-Produced Dentex dentex and Sciaena umbra for Restocking in Corsican Waters
IF 2.5 3区 环境科学与生态学
Aquatic Conservation-Marine and Freshwater Ecosystems Pub Date : 2025-03-03 DOI: 10.1002/aqc.70056
Salomé Ducos, Patrick Berrebi, Bruno Guinand, Mikaël Demolliens, Antoine Aiello, Eric D. H. Durieux
{"title":"Investigating Genetic Diversity in Hatchery-Produced Dentex dentex and Sciaena umbra for Restocking in Corsican Waters","authors":"Salomé Ducos,&nbsp;Patrick Berrebi,&nbsp;Bruno Guinand,&nbsp;Mikaël Demolliens,&nbsp;Antoine Aiello,&nbsp;Eric D. H. Durieux","doi":"10.1002/aqc.70056","DOIUrl":"https://doi.org/10.1002/aqc.70056","url":null,"abstract":"<p><i>Dentex dentex</i> and <i>Sciaena umbra</i> are two coastal fish species inhabiting Mediterranean waters, where they are considered threatened (assessed as ‘Vulnerable’ on the IUCN Red List). With increased knowledge of both species reproduction, they are envisioned as potential candidate species for restocking purposes around Corsica. However, such actions require genetic monitoring of juveniles that aimed to be released in order to make sure that restocking could not alter the natural genetic diversity. This study aimed to investigate microsatellite gene diversity of hatchery-reared <i>D. dentex</i> and <i>S. umbra</i> juveniles (8 and 11 microsatellite markers, respectively), compared to wild Corsican populations. In each species, broodstock genetic diversity turned out to be quite representative of wild populations. However, this study highlighted that the effective number of breeders was very small in <i>S. umbra</i> (29% of the broodstock participated in juveniles' production) and was composed of dominant parents (i.e., higher contribution of these parents to juvenile production) in <i>D. dentex</i> (one male and one female produced the majority of the juvenile sample). This led to heterozygote excess in juvenile samples and a significant genetic differentiation between (i) juvenile and wild samples and (ii) juvenile and broodstock samples, in both species. Broodstock individuals used in this study were fished in the wild, which was proven here not be sufficient for maintaining the level of genetic diversity found in natural populations. This study highlighted the idea that husbandry production might induce genetic distortion and therefore that genetic controls on hatchery-produced juveniles are essential for restocking purposes.</p>","PeriodicalId":55493,"journal":{"name":"Aquatic Conservation-Marine and Freshwater Ecosystems","volume":"35 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aqc.70056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prediction of Zinc, Cadmium, and Arsenic in European Soils Using Multi-End Machine Learning Models
IF 13.6 1区 环境科学与生态学
Journal of Hazardous Materials Pub Date : 2025-03-03 DOI: 10.1016/j.jhazmat.2025.137800
Mohammad Sadegh Barkhordari, Chongchong Qi
{"title":"Prediction of Zinc, Cadmium, and Arsenic in European Soils Using Multi-End Machine Learning Models","authors":"Mohammad Sadegh Barkhordari, Chongchong Qi","doi":"10.1016/j.jhazmat.2025.137800","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.137800","url":null,"abstract":"Heavy metal contamination in soil is a major environmental and public health concern, especially in regions with substantial industrial and agricultural activities. Conventional predictive models often focus on single contaminants, limiting their utility for comprehensive environmental monitoring. This study addressed these limitations by developing an advanced multi-end ensemble convolutional neural network model capable of simultaneously predicting the concentrations of cadmium, arsenic, and zinc in European soils. A comprehensive dataset with 18 diverse factors was prepared, including soil properties, climatic factors, and anthropogenic activities. Moreover, the model compared four ensemble learning techniques in contamination prediction, including simple averaging, snapshot ensembles, integrated stacking, and separate stacking. Among these, the separate stacking model with random forest regressor meta-model achieved the highest accuracy, with a mean spared error of 0.0378, a mean absolute error of 0.0785, and a coefficient of determination of 0.79 in the testing phases. Sensitivity analysis highlighted farming area, road length, nitrogen content, and mean annual temperature as key factors influencing metal concentrations. To enhance accessibility, a GUI-based web application was developed, allowing users to enter relevant factors and receive real-time predictions of contamination levels. This application empowers stakeholders, such as environmental regulators and policymakers, to make informed, data-driven decisions for targeted remediation. These findings underscore the critical role of integrated machine learning approaches in environmental science, offering a powerful tool for identifying contamination hotspots, supporting soil health management, and promoting sustainable land use.<h3>Environmental Implication</h3>The study reveals significant environmental implications, showing that soil contamination by arsenic, cadmium, and zinc across Europe is heavily influenced by human activities, particularly intensive agricultural practices that enhance the mobility of these heavy metals. Findings indicate that factors such as farming area, road length, nitrogen content, and mean annual temperature play a crucial role in metal accumulation. The advanced, multi-ended predictive models developed in this research, paired with an accessible web-based application, provide a practical tool for policymakers, researchers, and land managers. This tool enables real-time contamination assessments and supports the creation of policies aimed at controlling soil pollution, safeguarding public health, and promoting sustainable agricultural practices. These findings underscore the urgent need for integrated soil management strategies and contamination mitigation efforts, emphasizing how targeted actions can reduce the long-term impacts of heavy metal pollution on ecosystems and human health.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"17 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143532358","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
Cathodic electrochemical degradation of legacy (HMX, RDX, TNT) and insensitive (NTO, NQ, DNAN) munitions constituents
IF 13.6 1区 环境科学与生态学
Journal of Hazardous Materials Pub Date : 2025-03-03 DOI: 10.1016/j.jhazmat.2025.137789
Mark E. Fuller, Yuwei Zhao, Paul C. Hedman, Charles E. Schaefer
{"title":"Cathodic electrochemical degradation of legacy (HMX, RDX, TNT) and insensitive (NTO, NQ, DNAN) munitions constituents","authors":"Mark E. Fuller, Yuwei Zhao, Paul C. Hedman, Charles E. Schaefer","doi":"10.1016/j.jhazmat.2025.137789","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.137789","url":null,"abstract":"This research evaluated the cathodic electrochemical treatment of wastewater contaminated with energetic compounds, including “legacy” explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX), hexahydro-1,3,5-trinitro-s-triazine (RDX), and trinitrotoluene (TNT), as well as compounds insensitive munitions constituents, including 3-nitro-1,2,4-triazol-5-one (NTO), nitroguanidine (NQ), 2,4-dinitroanisole (DNAN). Rate constants and transformation products observed using electrochemical degradation performed under constant voltage (4<!-- --> <!-- -->V) and constant current (0.5<!-- --> <!-- -->A), as well as degradation via alkaline hydrolysis, were compared. Electrochemical degradation rate constants for all the energetics were greater than rate constants measured during alkaline hydrolysis. Degradation rate constants for individual energetics were generally similar to those observed in a mixture of all six compounds, with the exception of TNT (0.41 vs. 1.08<!-- --> <!-- -->h<sup>-1</sup>). Many of the transformation products detected (e.g., HCHO, dinitrophenol (DNP), NH<sub>4</sub><sup>+</sup>) evidenced further electrochemical degradation, but remained as residuals during alkaline hydrolysis. Utilizing <sup>13</sup>C/<sup>15</sup>N labeled parent compounds, varying degrees of mineralization to <sup>13</sup>CO<sub>2</sub> and <sup>15</sup>N<sub>2</sub>O were confirmed for RDX, NTO, and DNAN. The calculated electrical energy per order of removal (<em>E</em><sub><em>EO</em></sub>) was generally lower under constant voltage compared to constant current conditions, and ranged from 2<!-- --> <!-- -->Wh/L for TNT to 10<!-- --> <!-- -->Wh/L for NTO. These results provide proof-of-concept data for cathodic electrochemical treatment of mixed energetics wastewater.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"1 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143532481","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
Exceedance probability model for predicting the frequency of summer hot day patterns and temperature variability in Florida
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2025-03-03 DOI: 10.1016/j.scitotenv.2025.179000
Amirreza Nemati Mansour , Golmar Golmohammadi , Saman Javadi , Kourosh Mohammadi , Ramesh Rudra , Seyed Mostafa Biazar , Aminreza Neshat
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