Science of the Total Environment最新文献

{"title":"Dynamic assessment and prediction of typhoon disaster risk in Beibu Gulf: From the analytic hierarchy process and projection pursuit clustering perspective","authors":"Junjie Feng ,&nbsp;Yu Zhang ,&nbsp;Jianjun Xu ,&nbsp;Jiazheng Hu ,&nbsp;Yuan Tang ,&nbsp;Xiwen Liang","doi":"10.1016/j.scitotenv.2025.179389","DOIUrl":"10.1016/j.scitotenv.2025.179389","url":null,"abstract":"<div><div>The Beibu Gulf, located over the South China Sea, has frequently experienced tropical cyclones and typhoons over recent decades, significantly impacting marine ranching activities. This study introduces the Typhoon Disaster Prediction Algorithm (TDPA), a high-resolution disaster assessment algorithm specifically designed for marine ranching risk evaluation. By integrating meteorological and disaster data from 59 typhoons (1984–2019), the TDPA identifies key influencing factors through diagnostic analysis and quantifies their contributions using the Analytic Hierarchy Process (AHP). A high-resolution disaster prediction grid is then generated via Projection Pursuit Clustering (PPC) to classify potential typhoon damage levels in real-time. The results demonstrate: (1) Maximum wind speed is the most critical meteorological factor, exhibiting a strong positive correlation with all components of marine ranching disaster losses. (2) Marine aquaculture economic losses account for 96.51 % of total disaster impacts, with a significant correlation to typhoon center distance, amplifying indirect damages.; (3) The TDPA achieves high prediction accuracy, with a Pearson correlation of 0.68, Spearman coefficient of 0.57, and an overall accuracy of 83 %, closely aligning with historical disaster data. By leveraging high-resolution meteorological data, TDPA provides fine-grained spatial and temporal disaster estimates, offering an interpretable and adaptable algorithm for emergency management. This algorithm enhances disaster prevention and mitigation strategies, supporting more effective risk-informed decision-making in the Beibu Gulf region.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"977 ","pages":"Article 179389"},"PeriodicalIF":8.2,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Associations between pesticides in honeybees/hive products and adjacent land use in a rural region of Taiwan","authors":"Chien-Che Hung,&nbsp;Chung-Wen Hsueh,&nbsp;Wei-Cheng Chang,&nbsp;Lih-Ming Yiin","doi":"10.1016/j.scitotenv.2025.179392","DOIUrl":"10.1016/j.scitotenv.2025.179392","url":null,"abstract":"<div><div>Pesticide contamination in honeybees may be impacted by land covers surrounding the apiaries. We conducted a field study to explore the associations between pesticides in honeybees/hive products and land use (i.e., upland field, orchard, forest) in eastern Taiwan. Twelve apiaries collaborated with this study, providing bioindicating samples of honeybees (healthy, sick, dead) and hive products (beeswax, bee pollen), which were collected during the blooming season (May through September). Samples were analyzed for 14 pesticides (six insecticides, five herbicides, three fungicides) using gas or liquid chromatography coupled with mass spectrometry. Geographic information system technology was employed to determine the proportions of different land covers within the designated buffer zones. All sample matrices except healthy bees carried high pesticide levels, with mean total concentrations exceeding 270 ng/g. Significant correlations (ρ &gt; 0.59, P &lt; 0.05) were observed between pesticides in the apiarian samples and upland fields, suggesting a contribution of pesticides from upland field farming. Negative correlations (ρ &lt; −0.58, P &lt; 0.05) were found between fungicide levels in the samples and the presence of forests within the buffer zones, indicating minimal agricultural activity in forested areas. Orchards appeared to have little direct impact on pesticide levels in the bioindicators; while negative correlations were noted between pesticides and orchards in the long-distance buffer zones, they may have been confounded by other factors. Overall, our findings suggest that land use may play a role in pesticide contamination in honeybees and hive products, but the associations may be influenced by non-agricultural pesticide sources.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"977 ","pages":"Article 179392"},"PeriodicalIF":8.2,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PFAS in Iowa drinking water sources: Chemical and geospatial patterns","authors":"Daria Dilparic ,&nbsp;Matthew Graesch ,&nbsp;Claire Hruby ,&nbsp;Joseph A. Charbonnet","doi":"10.1016/j.scitotenv.2025.179397","DOIUrl":"10.1016/j.scitotenv.2025.179397","url":null,"abstract":"<div><div><em>Per</em>- and polyfluoroalkyl substances (PFAS) are toxic, persistent, and ubiquitous contaminants which are harmful to the environment and human health. We analyzed publicly accessible records of PFAS concentrations in surface water and groundwater used for public drinking water supplies across the state of Iowa, along with groundwater from private wells near suspected contamination sources. We analyzed these data using the Mann-Whitney <em>U</em> test, principal component analysis, analysis of variance, and Tukey's honestly significant difference test to identify contamination patterns at the regional and local scale. Results indicate that surface water sources across the state are much more likely to contain PFAS than groundwater sources (i.e., 94 % vs. 30 %), but among contaminated public water sources, groundwater has a higher average total PFAS concentration than surface water (i.e., 43.9 ng/L vs. 9.8 ng/L). Two short-chain PFAS (PFBA and PFPeA) dominate surface water sources across the state apart from the Mississippi River, which contains elevated concentrations of PFOS and PFOA. The Mississippi River also influences groundwater within the breadth of its floodplain and associated alluvial aquifer; most groundwater under the influence of the Mississippi River has a similar PFAS fingerprint to the river itself and contains greater concentrations of PFBA than is typical of contaminated groundwaters located outside the influence of the river. Case studies from public and private wells in four PFAS-impacted communities further illustrate that despite regional-scale patterns, PFAS contamination of non-alluvial groundwater often reflects highly local point sources, including firefighting activities and fluorochemical manufacturing, storage, or use. These results demonstrate the utility of regional analyses for characterizing PFAS threats to water supplies and contextualizing local PFAS data in spite of complex source mixtures and fate and transport behavior.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"977 ","pages":"Article 179397"},"PeriodicalIF":8.2,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing future changes in heating and cooling degree days using multiple base temperatures for cultural heritage sites in Greece: A case study of Thessaloniki and Delphi","authors":"E. Tringa ,&nbsp;K. Tolika ,&nbsp;S. Tsoka ,&nbsp;Ch. Anagnostopoulou ,&nbsp;E. Kostopoulou","doi":"10.1016/j.scitotenv.2025.179352","DOIUrl":"10.1016/j.scitotenv.2025.179352","url":null,"abstract":"<div><div>As the climate changes, accurate predictions of future energy demand are critical for residential buildings but particularly for cultural sites such as historical buildings and museums, to provide optimal environmental conditions for the preservation of cultural heritage and visitors' comfort. Future Heating Degree Days (HDD) and Cooling Degree Days (CDD) changes can provide valuable information for many sectors including museums which need to maintain stable indoor temperatures to protect their collections. In the present study, HDD and CDD are calculated for two Greek regions, Thessaloniki and Delphi, which host numerous museums and historical buildings providing useful information for future energy consumption. HDD were calculated for base temperatures of 15 °C, 16 °C, 17 °C and 18 °C, while CDD were computed for base temperatures of 23 °C, 24 °C, 25 °C, and 26 °C. The study was carried out for the reference period (1989–2000) and for two future periods (2039–2059 and 2079–2099). Daily simulated data were derived from the Regional Climate Model RegCM4 with a fine spatial resolution of 10 × 10 km. In addition, the emission scenario RCP4.5 was used for the model's future simulations. An increase in base temperature leads to higher estimates of CDD, whereas a decrease in base temperature increases HDD. Future projections indicate a decline in HDD and an increase in CDD, reflecting a shift in energy requirements in both case studies. The seasonal analysis revealed a substantial decrease in heating needs during winter and a notable increase in cooling demands during summer. Transitional months also show marked changes, indicating extended warm periods. Overall, the study highlights that in both regions the demand for heating is expected to decrease due to warmer temperatures, while energy requirements for cooling are anticipated to increase, indicating a shift in energy distribution from heating to cooling.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"977 ","pages":"Article 179352"},"PeriodicalIF":8.2,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the release of microplastics' additives in the human digestive environment by an in vitro dialysis approach using simulated fluids","authors":"Joel Sánchez-Piñero ,&nbsp;Estefanía Concha-Graña ,&nbsp;Jorge Moreda-Piñeiro ,&nbsp;Purificación López-Mahía ,&nbsp;Soledad Muniategui-Lorenzo","doi":"10.1016/j.scitotenv.2025.179333","DOIUrl":"10.1016/j.scitotenv.2025.179333","url":null,"abstract":"<div><div>Ingestion of microplastics represents a significant exposure pathway to harmful additives to humans. In the last years, many studies have been focused on assessing the additives' fraction that could be released in gastrointestinal simulated fluids to estimate their potential health risk. In the present study, oral bioaccessibility (i.e., fraction dissolved in gastrointestinal fluids) and bioavailability (i.e., fractions absorbed in simulated blood) of plastic additives were simultaneously assessed by an in vitro method including a dialysis membrane filled with simulated human plasma. To this end, a method consisting of a vortex-assisted liquid-liquid extraction (VALLME) prior to gas chromatography-tandem mass spectrometry (GC–MS/MS) determination was successfully validated for the analysis of 38 multi-class additives in simulated fluids. This methodology was novelty applied to 3 conventional petroleum-based polymers (high-density polyethylene (r-HDPE), polypropylene (r-PP) and polyethylene terephthalate (PET)) and biopolymer (polylactic acid (PLA), polyhydroxy butyrate (PHB) and poly(3-hydroxybutyrate-<em>co</em>-3-hydroxyvalerate (PHBv)) microplastics, as well as after additional mechanical recycling and marine-ageing processes to explore changes in additives' release. Biopolymers were observed to release 4-fold more additives in bioaccessible fractions than conventional polymers, being tri-n-butyl phosphate (TnBP) the most profuse (101 ng g⁻¹, by average); whereas diethyl phthalate (DEP) was only quantitated in bioavailable fractions (mean of 8.6 ng g⁻¹), with a ratio of 14.1 %. Moreover, different additives were released after marine ageing and additional recycling, observing an increase in bioaccessible additives concentrations for PLA, PET, and r-HDPE, and reduced for PHB and r-PP; while a decrease in bioavailable additives was observed for PLA and r-HDPE.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"977 ","pages":"Article 179333"},"PeriodicalIF":8.2,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring biodegradation limits of n-alkanes as polyethylene models using multi-omics approaches","authors":"Miwa Suzuki ,&nbsp;Takuya Hayashi ,&nbsp;Kohei Takahashi ,&nbsp;Kyoko Nozaki ,&nbsp;Ken-ichi Kasuya","doi":"10.1016/j.scitotenv.2025.179365","DOIUrl":"10.1016/j.scitotenv.2025.179365","url":null,"abstract":"<div><div>Polyethylene (PE) is widely regarded as non-biodegradable in natural environments, despite reports suggesting partial biotic degradation. Using multi-omics analysis, this study investigated the biodegradation mechanisms of <em>n</em>-alkanes—structural analogs of PE—to determine the threshold carbon number in PE that allows for environmental biodegradation. <em>n-</em>Alkanes with 6–40 carbons (C6–C40) were biodegraded in the soil, whereas C44 and PE were not. 16S rRNA gene amplicon sequence analysis identified distinct microbial communities associated with non-degradable compounds (PEs and C44) and biodegradable alkanes (C6–C40). Notably, the microbial community composition for C40 differed from those associated with biodegradable alkanes below C36. Multi-omics analysis identified the genera <em>Aeromicrobium, Nocardia</em>, <em>Nocardioides</em>, <em>Rhodococcus</em>, <em>Acinetobacter</em>, and <em>Fontimonas</em> as key degraders of <em>n-</em>alkanes at C36 and below, utilizing alkane hydroxylases such as alkane monooxygenase (AlkB), LC-alkane monooxygenase from <em>Acinetobacter</em> (AlmA), and cytochrome P450 (CYP153). Conversely, the biodegradation of C40 was facilitated by taxa, including the order Acidimicrobiales and the genera, <em>Acidovorax</em>, <em>Sphingorhabdus</em>, <em>Prosthecobacter</em>, and <em>Roseimicrobium</em> using AlmA and CYP153-type hydroxylases. This difference in key degraders and alkane hydroxylases may explain the reduced biodegradability of <em>n-</em>alkanes above C40, including PE.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"977 ","pages":"Article 179365"},"PeriodicalIF":8.2,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hospital air sampling enables surveillance of respiratory virus infections and genomes","authors":"Sofiya Bobrovska ,&nbsp;Erin Newcomer ,&nbsp;Michael Gottlieb ,&nbsp;V. Eloesa McSorley ,&nbsp;Alyse Kittner ,&nbsp;Mary K. Hayden ,&nbsp;Stefan Green ,&nbsp;Hannah J. Barbian","doi":"10.1016/j.scitotenv.2025.179346","DOIUrl":"10.1016/j.scitotenv.2025.179346","url":null,"abstract":"<div><div>There is an urgent need for early detection and comprehensive surveillance of respiratory pathogens. Environmental surveillance may be key to timely responses for newly emerging pathogens and infections that are unreported or underreported. Here, we employed air sampling in a large urban hospital. Air samples (<em>n</em> = 358) were collected weekly at five locations, including two in the emergency department, two in hospital common areas and one in a storage room, for two respiratory virus seasons (November 2022 to June 2024). Air samples were tested for eight respiratory pathogens by qPCR, including RNA and DNA viruses and a bacterium. Air samples had an average of four detected pathogens per sample and 97 % samples contained SARS-CoV-2. Air sample pathogen positivity and quantity were strongly correlated with clinical surveillance for four seasonal respiratory pathogens: influenza A and B, respiratory syncytial virus, and human metapneumovirus. Targeted amplicon sequencing of SARS-CoV-2 showed that lineages detected in air samples reflected those in contemporaneous regional clinical specimens. Metagenomic sequencing with viral capture enrichment detected myriad human pathogens, including respiratory-associated viruses with recovery of full viral genomes. Detection of viral pathogens correlated well between virus capture sequencing and qPCR. Overall, this suggests air sampling can be an agile and effective tool for pathogen early warning, surveillance and genome characterization.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"977 ","pages":"Article 179346"},"PeriodicalIF":8.2,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impact of polyvinyl chloride microplastics on carbon and nitrogen cycling in peat-forming environments: relevance of the filler additive calcium carbonate (CaCO3)","authors":"Juanita Mora-Gomez ,&nbsp;Adrien Jacotot ,&nbsp;Nicolas Freslon ,&nbsp;Hela Ben Zeineb ,&nbsp;Michael Charron ,&nbsp;Catherine Joulian ,&nbsp;Claude Le Milbeau","doi":"10.1016/j.scitotenv.2025.179341","DOIUrl":"10.1016/j.scitotenv.2025.179341","url":null,"abstract":"<div><div>Peat-forming wetlands (PFW) are crucial in the global C-cycle, yet they are increasingly threatened by various anthropogenic pressures, including microplastic (MP) pollution. We investigate the impacts of polyvinyl chloride (PVC) and its additive, calcium carbonate (CaCO₃) on organic matter (OM) degradation in PFW. We conducted two experiments: first, by mixing peat soil with increasing concentrations of crushed sanitary PVC-MP (0.3 %, 3 %, and 30 %) and second, by assessing the role of CaCO₃ in modulating these impacts. Our findings revealed significant alterations in peat chemical properties largely mediated by CaCO₃ (i.e. increased pH, and Ca²⁺, Mg²⁺, K⁺ concentrations). PVC-MP increased carbon dioxide (CO₂) and methane (CH₄) production, as well as dissolved organic carbon release. CaCO₃ may have enhanced CO₂ release through its dissolution and contributed to CH₄ production as a C source for a more diverse and active methanogenic community (higher <em>mcrA</em> gene abundance). Shifts in microbial community composition (e.g. reduction of <em>Acidobacteriae</em> and increase in active fermenters, such as <em>Clostridia</em>) and metabolism (higher lignin-like compounds degradation and P-uptake activity but lower activity of labile-C degrading enzymes) also contributed in the C-cycle alterations. PVC-MP enhanced denitrification (<em>narG</em> gene abundance) but reduced relative proportion of the ammonia-oxidizing archaea <em>Nitrososphaeria</em>, leading to inhibition of nitrification. The effects of PVC-MP were concentration-dependent, with CaCO₃ strongly influencing on the C cycle, while its impact on the N cycle was only partial, suggesting potential effect of other additives, such as plasticisers. Overall, our results highlight a significant disruption of microbial processes due to MP pollution, leading to increased greenhouse gas emissions and significant implications on the role of PFW as global C-sinks.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"977 ","pages":"Article 179341"},"PeriodicalIF":8.2,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Arbuscular mycorrhizal fungi inoculation and biochar application enhance soil carbon and productivity in wheat and barley","authors":"A.R.G. Mason ,&nbsp;M.J. Salomon ,&nbsp;A.J. Lowe ,&nbsp;T.R. Cavagnaro","doi":"10.1016/j.scitotenv.2025.179230","DOIUrl":"10.1016/j.scitotenv.2025.179230","url":null,"abstract":"<div><div>Influencing the global carbon cycle via modification to the terrestrial soil carbon pool has been suggested as one solution to help mitigate climate change. Cropping systems cover a vast expanse of earth's surface and represent a major carbon exchange point. Investigating management practices and biotechnologies capable of influencing soil carbon in cropping systems is thus a valuable endeavour, as even modest interventions have the capacity to increase carbon stocks and improve soil fertility and plant production. Arbuscular mycorrhizal fungi (AMF) are obligate biotrophs forming mutually beneficial relationships with a wide array of symbiotic partners. Increasingly, AMF are being investigated for their potential to enhance agricultural productivity through inoculation of soil and seeds with living propagules or spores. Beyond their positive influence on plant growth and resilience, AMF may have some capacity to influence the global carbon cycle through several conceptually recognised yet poorly understood mechanisms, warranting further exploration.</div><div>Here, we evaluate the potential of AMF as an inoculant to promote soil carbon sequestration in wheat and barley under greenhouse conditions. We assess the growth response of these crops and explore interactive effects of AMF with several organic amendments. Both wheat and barley exhibited a strong mycorrhizal growth response, with inoculation significantly increasing biomass (root and shoot dry weight) and productivity (head dry weight), especially under low nutrient conditions. Effects of AMF on soil carbon cycling were assessed through soil respiration, total carbon (TC) content, and easily extractable organic carbon. Inoculation significantly increased soil TC concentration in both the unamended control and the biochar-amended wheat treatments. We reveal evidence for a biochar + AMF carbon stabilisation pathway, whereby biochar may act to stabilise new fungal derived carbon inputs while reducing soil respiration. We discuss these results in the context of carbon credit generation and climate change mitigation potential.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"977 ","pages":"Article 179230"},"PeriodicalIF":8.2,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced sustainable remediation of co-contaminated soil and groundwater with lead and arsenic utilizing the willow-vetiver-permeable reactive barrier system","authors":"Li Yepu ,&nbsp;Wang Guobing ,&nbsp;Jiang Tao ,&nbsp;Yin Ying ,&nbsp;Guo Hongyan","doi":"10.1016/j.scitotenv.2025.179343","DOIUrl":"10.1016/j.scitotenv.2025.179343","url":null,"abstract":"<div><div>Soil and groundwater pollution are closely linked, necessitating integrated remediation strategies. However, research on the combined use of phytoremediation and permeable reactive barriers (PRB) for the synergistic remediation of lead (Pb) and Arsenic (As) co-contaminated soil and groundwater remains limited. This study investigates the sustainable integrated remediation of Pb and As co-contaminated soil and groundwater through laboratory simulations, utilizing a combination of willow, vetiver grass, and PRB. The study demonstrated a significant reduction in groundwater Pb and As concentrations, from 500 μg L⁻¹ to &lt;0.5 μg L⁻¹ and 0.99 to 2.04 μg L⁻¹, respectively. Soil Pb levels decreased by 13.25–33.76 mg kg⁻¹ compared to initial levels. Notably, plant-derived organic carbon significantly influenced the composition and content of organic carbon in groundwater, ensuring a sustainable carbon supply. Transcriptome profiling of willow leaves indicated up-regulation of genes associated with photosynthesis, arsenate reductase activity, and phagosome function, potentially enhancing As and Pb extraction. Dominant soil and groundwater bacteria, including <em>Roseiflexaceae</em>, <em>Intrasporangiaceae</em>, <em>KD4-96</em>, <em>Bacillus_drentensis</em>, and <em>SBR 1031</em>, exhibited Pb and As immobilization capabilities. Furthermore, GC–MS analysis showed that up-regulated carboxyl-containing organics lowered groundwater pH from &gt;9 to 7.5 by day 35, without compromising As and Pb remediation efficiency. This research provides insights into the sustainable integrated remediation of Pb and As contamination in soil and groundwater.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"977 ","pages":"Article 179343"},"PeriodicalIF":8.2,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823587","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}