Journal of Hazardous Materials最新文献

{"title":"Distribution and Trophic Transfer of Mercury and Selenium in European Hake (Merluccius merluccius) from the Northeast Atlantic Ocean: A Stable Isotope Approach","authors":"Yiou Zhu, Julien Barre, Arved Staby, Martin Wiech, Zoyne Pedrero Zayas, Emmanuel Tessier, Sylvain Bérail, Amund Maage, Livar Frøyland, Michael S. Bank","doi":"10.1016/j.jhazmat.2025.138564","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138564","url":null,"abstract":"European hake (EH - <em>Merluccius merluccius</em>) are a commercially valuable, high trophic position marine fish species inhabiting the Northeast Atlantic Ocean (NEAO). Here, we investigated total mercury (Hg) bioaccumulation and trophic transfer dynamics, and selenium (Se) Hg interactions in EH fillets at a historic waste disposal site with a known Hg point source (<em>n</em> = 25) and at reference sites (<em>n</em> = 763) throughout Norway. Fillet concentrations of Hg (<u>&gt;</u> 91% methylmercury - MeHg) and Se, were elevated in samples from the polluted site (Hg_polluted = 0.271 ± 0.153, Hg_reference = 0.114 ± 0.096, Se_polluted = 0.425 ± 0.033, and Se_reference = 0.321 ± 0.044<!-- --> <!-- -->mg/kg wet weight). The opposite was found for Se:Hg molar ratios (Se:Hg_reference = 12.1 ± 7.91, Se:Hg_polluted = 6.39 ± 4.96), however when controlling for Hg concentrations, the EH Se:Hg ratio from the polluted site was higher compared to reference conditions. We further investigated trophic niches using stable carbon, nitrogen, and Hg isotopes and found different isotopic niches between reference and polluted sites. EH from both site types had different Hg isotopic signatures and were enriched in heavier isotopes at reference sites (e.g., δ²⁰²Hg_reference = 0.964 ± 0.177, δ²⁰²Hg_polluted = 0.714 ± 0.115‰). Hg enriched in fillet tissue primarily underwent MeHg photodegradation at both sites. However, due to the local Hg point source, lower MDF isotope values and odd MIF isotope values (e.g., ∆¹⁹⁹Hg_reference = 0.981 ± 0.105, and ∆¹⁹⁹Hg_polluted = 0.829 ± 0.110‰) were observed at the polluted site. Overall, our findings indicate good discriminability regarding Hg source apportionment and highlight the role of point source pollution as an important modulator of the EH Hg bioaccumulation regime in the NEAO study system.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"47 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946365","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":"Impacts of environmentally persistent free radicals on the denitrification toxicity of photoaged tire wear particles in estuarine sediments","authors":"Jinyu Ye, Yuhan Zhang, Yuan Gao, Chen Li, Baoping Zou, Ruotong Cheng, Baoyan Chi, Xiangdong Xue, Carlos Domingo-Félez","doi":"10.1016/j.jhazmat.2025.138623","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138623","url":null,"abstract":"The widespread detection of tire wear particles (TWPs) in estuaries has raised concerns about their potential environmental hazards. However, knowledge of photoaging-induced environmentally persistent free radicals (EPFRs) formation on TWPs in estuarine environments and their impact on sediment denitrification remains limited. This study investigated the formation of EPFRs on TWP during photoaging in estuarine environments and evaluated their effects on sediment denitrification and nitrous oxide (N₂O) accumulation. Sixty days of illumination increased EPFR concentration on TWPs by 373%, with the generated EPFRs persisting in sediments for over 20 days. Exposure to pristine TWP (PTWP) reduced denitrification rates by 10.3 ± 5.6% and increased N₂O accumulation by 18.3 ± 4.5%. Further exposure to photoaged TWP (ATWP) under 10–60 days of illumination expanded denitrification suppression and N₂O accumulation to 28.1 ± 7.1–42.5 ± 6.6% and 18.8 ± 4.3–31.7 ± 4.6%, respectively. EPFRs exacerbated the accumulation of reactive nitrogen species in sediment and compromised the antioxidant systems. Structural equation modeling confirmed that EPFRs indirectly suppressed denitrification rates by directly impairing microbial processes involved in carbon metabolism and electron transfer. This study is the first to report that the formation of EPFRs enhances the negative effects of ATWP on the sediment’s nitrogen cycle, offering valuable insights for assessing the ecological risks associated with TWP.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"112 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143940184","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":"Electron flow dynamics in sulfur-based autotrophic bioreduction of Cr(VI) mediated by inorganic carbon species: Insights for environmental remediation","authors":"Yongheng Zhan, Nan Chen, Chuanping Feng, Tianjiao Dai, Hang Gao, Yuan Yuan, Weiwu Hu, Hailiang Dong","doi":"10.1016/j.jhazmat.2025.138585","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138585","url":null,"abstract":"The deployment of sulfur-based autotrophic bioremediation for in situ groundwater remediation faces hurdles due to electron competition among electron acceptors, impacting contaminant removal efficiency and causing pH instability. Notably, the sulfur-based bioreduction of Cr(VI) [Cr(VI)-SAR] exemplifies gaps in our comprehension of electron competition dynamics with inorganic carbon (IC), and its subsequent influence on pH. Herein, we established a Cr(VI)-SAR system interfaced with diverse IC species, providing definitive insights into electron transfer mechanisms through rigorous multi-biocycle analysis and thermodynamically consistent half-reaction calculations. Through quantification of electron transfer pathways, we derived reaction equations for Cr(VI) reduction in conjunction with various IC species. Furthermore, metagenomics were used to quantify functional enzymes and identify diverse electron transport patterns alongside IC fixation pathways. Notably, the enrichment of genes associated with electron shuttles and conductive pili expands the paradigm of extracellular electron transfer, while the Wood-Ljungdahl pathway streamlines microbial metabolic proliferation with reduced energy expenditure. Quantitative analysis of these functional genes offers a plausible mechanism underlying the observed shifts in electron competition between IC and Cr(VI). This research marks an advancement in the Cr(VI)-SAR foundational theory, with a particular focus on the dynamics of electron competition, contributing to a deeper understanding of this environmentally significant process.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"2019 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933523","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":"Deciphering Pollinator Exposure Hazards: Systemic translocation and accumulation of Seed-coating pesticides in Maize and their synergistic exposure risk to bees","authors":"Fengjiao Hao, Baoling Zhang, Junwei Cui, Jun Xu, Fengshou Dong, Xiaohu Wu, Yongquan Zheng, Xinglu Pan","doi":"10.1016/j.jhazmat.2025.138595","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138595","url":null,"abstract":"Seed coating agents, especially neonicotinoid-fungicide combinations, is widely used for crop pest and disease control, their distribution behavior and potential ecological risks are largely overlooked. This study aimed to reveal the translocation pattern of 7 seed-coating pesticides in maize tissues and leaf guttation, and the exposure risk to bees. Hydrophilic pesticides including thiamethoxam, imidacloprid, clothianidin, and metalaxyl-M (log <em>K</em>_<em>ow</em> = -0.13 - 1.75) demonstrated efficient root-to-leaf translocation and subsequent release through leaf guttation, establishing a concentration gradient of leaves &gt; roots &gt; stems. The peak concentrations of these compounds in guttation were 2.06 - 50.56<!-- --> <!-- -->mg/L. Conversely, lipophilic pesticides (tebuconazole, ipconazole and fludioxonil, log <em>K</em>_<em>ow</em> = 3.70 - 4.21) remained mainly in roots with negligible upward translocation, exhibiting the highest guttation concentrations of 0.004 – 0.156<!-- --> <!-- -->mg/L. Toxicity tests showed strong synergy in thiamethoxam-metalaxyl-M and imidacloprid-tebuconazole combinations, with cotoxicity coefficient values of 220.36 and 337.49, respectively. The risk assessment revealed that exposure risk of guttation and pollen to bees were unacceptable both in laboratory cultivation and actual field when neonicotinoids and fungicides were mixed coated (RQ = 1.1 - 31496). Our findings highlight potential ecological risk of seed-coating pesticides during maize growth, and provide essential data for rational application and development.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"137 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933528","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":"Elimination of antibiotic resistance genes and adaptive response of Firmicutes during chicken manure composting","authors":"Wei-Li Jia, Ben Wang, Lu-Kai Qiao, Fang-Zhou Gao, Wang-Rong Liu, Liang-Ying He, Guang-Guo Ying","doi":"10.1016/j.jhazmat.2025.138593","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138593","url":null,"abstract":"Aerobic composting is an effective method for reducing the abundance of antibiotic resistance genes (ARGs), but its effectiveness is influenced by the complex conditions during the process. However, the impact of composting conditions on the fate of ARGs and the underlying mechanisms remains unclear. This study examined the profile of ARGs, their mobility potential, hosts, and the risk of antibiotic resistome under different chicken manure composting conditions. A total of 708 ARGs were identified, and composting reduced their relative abundance by 29.4%–82.4%. Composting amendments and aeration rates exhibited similar elimination efficiencies for ARGs at different levels. However, low initial moisture content (50%) caused a rebound in ARG abundance during the maturation phase. ARGs were mainly located on plasmids. After composting, the percentage of plasmid-born ARGs decreased from 46.3%–70.8% to 28.4%–49.0%. ARGs co-localized with mobile genetic elements displayed similar trends. The tolerance of <em>Firmicutes</em> to low moisture content played a key role in the rebound of ARGs and variations in their mobility potential. Composting reduced antibiotic resistance and ARG mobility in pathogens. Conversely, low moisture content hindered this attenuation effect in <em>Firmicutes</em>, which increased antibiotic resistome risk. This study provides comprehensive insights into the fate of ARGs and highlights the environmental risks of ARGs during composting.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"3 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933529","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":"Overlooked risk of dissemination and mobility of antibiotic resistance genes in freshwater aquaculture of the Micropterus salmoides in Zhejiang, China","authors":"Yangcheng Ding, Shuangjing Dong, Danna Ding, Xiaoming Chen, Fangxi Xu, He Niu, Jixiao Xu, Yuhang Fan, Ruya Chen, Yijing Xia, Xiawen Qiu, Huajun Feng","doi":"10.1016/j.jhazmat.2025.138604","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138604","url":null,"abstract":"Residual antibiotics in aquaculture ecosystems can exert selective pressures on bacterial communities, driving bacteria to acquire antibiotic resistance genes (ARGs) through gene mutations or horizontal gene transfer (HGT). This study investigated the antibiotic resistance risk in freshwater aquaculture ecosystems of <em>Micropterus salmoides</em> in Zhejiang Province. The results revealed that oxytetracycline, ciprofloxacin and florfenicol were up to 300<!-- --> <!-- -->ng/L, and the proportion of multidrug-resistant genes varied from 32.20% to 50.70% in the surveyed aquaculture water. Additionally, approximately 9.80% of all annotated ARGs were identified as possessing plasmid-mediated horizontal transfer risks. The ARGs host prediction revealed that Actinobacteria carried the highest abundance of ARGs, up to 159.38 (coverage, ×/Gb). Furthermore, the abundance of <em>Paer_emrE</em>, <em>ksgA</em>, <em>ompR</em> and <em>golS</em> were positively correlated with Chlorophyll a concentration (<em>p</em> &lt; 0.05), suggesting that algal blooms might facilitate the evolution and transfer of ARGs. Correlations between ARG abundances and total phosphorus, total nitrogen, pH, electrical conductivity indicated that modulating water quality parameters may serve as a viable strategy to mitigate the eco-environmental risk of ARGs in aquaculture water. This study identified antibiotic resistance characteristics in freshwater aquaculture ecosystems of <em>Micropterus salmoides</em> in Zhejiang Province, establishing a foundation on managing antibiotic resistance risks in such aquaculture environments.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"112 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143940254","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":"Unraveling the Dual Role in Enhancing Methane Production and Mitigating Antibiotic Resistance Gene Spread in Anaerobic Co-digestion of Microalgae and Waste Activated Sludge","authors":"Wenyi Feng, Yuhang Ye, Yinping Xiang, Shudian Peng, Siying He, Haihao Peng, Zhenfeng Zhang, Zhaohui Yang, Weiping Xiong","doi":"10.1016/j.jhazmat.2025.138606","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138606","url":null,"abstract":"Waste activated sludge (WAS) is a double-edged sword – a recognized repository for antibiotic resistance genes (ARGs) but also a renewable substrate for methane production. Developing effective WAS treatment strategies is therefore of both ecological and practical importance. In this study, we proposed an anaerobic co-digestion approach of WAS and microalgae <em>Chlorella</em> sp. at a 1:2 ratio (MAcoD-1:2). Results showed that MAcoD-1:2 notably increased cumulative methane production by 52.7%. Co-digestion also demonstrated a significant increase in the abundance of hydrolyzing acidifying bacteria <em>Candidatus_Promineofilum</em> (12.25%) and methanogenic archaea <em>Methanothrix</em> (61.2%). This microbial shift suggested that cosubstrates availability fostered a stable bacterial community structure and synergistic metabolic interactions, thus enhancing methane production. Metagenomic analysis revealed a significant reduction in both ARGs and mobile genetic elements in MAcoD-1:2. Notably, substrate level regulation was found to drive restructuring of microbial communities and metabolic patterns. Investigation showed that the Embden-Meyerhof-Parnas pathways were significantly inhibited while the pentose phosphate pathway was promoted, which constrained the cellular energy budget available for ARG horizontal transfer. Partial least squares path modelling (PLS-PM) further substantiated these findings, revealing methane metabolism negatively affected ARGs (-4.52), whereas confirming its positive correlation with methane production (0.22). Our findings provided distinctive perspectives on WAS resource utilization and novel technologies to inhibit the spread of ARGs.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"1 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143940193","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":"Disrupting Cross-Adaptation in High-Risk MRSA: Sanguinarine as a Multi-effective Stress Sensitizer for Environmental and Food Safety","authors":"Qiang Ma, Yuan Liu, Jianuo Cen, Qiqi Wang, Meinuo Chen, Shiqi Chen, Zhimeng Zhang, Ke Han, Zhiyue Feng, Congming Wu, Jianzhong Shen, Haiyang Jiang","doi":"10.1016/j.jhazmat.2025.138586","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138586","url":null,"abstract":"Methicillin-resistant <em>Staphylococcus aureus</em> (MRSA) represents a significant public health concern owing to its formidable antibiotic resistance and robust capacity for biofilm formation. The cross-adaptation mechanism enables MRSA to develop tolerance to environmental stressors such as antibiotics, acid, heat and osmotic pressure, leading to the persistence infections and environmental contamination. The cross-adaptation mechanism enables MRSA to develop tolerance to environmental stressors, such as antibiotics, acid, heat and osmotic pressure, leading to the persistence infections and environmental contamination. Here, we identified 261 strains of <em>S. aureus</em> and 9 high-risk MRSA from the environment of dairy farms and raw milk. The natural product Sanguinarine (SAN), derived from feed additives, exhibits effective anti-MRSA and anti-biofilm activity. Notably, SAN enhances the sensitivity of MRSA to antibiotics, acid, heat, and osmotic pressure by disrupting the cross-adaptation mechanism. Mechanistic investigations revealed that SAN significantly reduces the transcriptional level of type I (<em>dnaK</em>, <em>groEL</em>, etc.) and type III (<em>clpB</em>, <em>clpP</em>, etc.) heat stress response genes while markedly upregulating type II (σ^B) gene. Furthermore, SAN upregulates Na⁺/H⁺ antiporters activity, F₀F₁-ATPase activity and purine metabolism, while broadly downregulating DNA damage repair genes and disrupting ribosomal function. Additionally, SAN induces non-synonymous mutations in key stress response factors ClpB/L, leading to a loss of conformational homeostasis. SAN elicits a distinct stress response compared to environmental stressors, weakening MRSA’s resilience and demonstrating promising capabilities for MRSA clearance and biofilm inhibition. Overall, SAN provides an effective strategy for the clearance of high-risk MRSA and the assurance of public health security.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"51 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933533","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":"Renewable Electrochemical Sensors Based on Copper-Organic Frameworks for Highly Sensitive and Selective Detection of Tetrabromobisphenol A","authors":"Caoling Li, Ling Lei, Wenbo Huang, Junxing Hao, Kangbing Wu","doi":"10.1016/j.jhazmat.2025.138596","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138596","url":null,"abstract":"The development of simple, low-cost, and reliable analytical methods for detecting Tetrabromobisphenol A (TBBPA) is crucial, given its widespread environmental presence and high biological toxicity. Herein, a ultralow background and renewable electrochemical sensing platform was developed using specific porous copper-organic framework modified carbon paste electrode (Cu-BTC/CPE), enabling highly sensitive and selective detection of TBBPA. Due to its unique porous structure and abundant active sites, the Cu-BTC/CPE exhibits superior electroadsorption capacity (including adsorbed charge and binding energy) as well as enhanced electrocatalytic activity for TBBPA. By leveraging the plasticity and polishability of paraffin oil and graphite powder mixtures, the constructed Cu-BTC/CPE electrode demonstrates admirable repeatability (≥ ten times) and stability (RSD &lt; 5%). Furthermore, the reusable and cost-effective Cu-BTC/CPE-based sensor features a wide linear range of 3–500<!-- --> <!-- -->nM with a low detection limit of 0.53<!-- --> <!-- -->nM. It was successfully applied to real samples (plastic e-waste, soil, and sewage), and the results consisted with the values that obtained by high-performance liquid chromatography-mass spectrometry. In brief, this novel sensing system holds considerable promise for rapid, convenient, and on-site monitoring of TBBPA in complex environmental matrices.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"28 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933531","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":"In-situ growth of FeSx nanosheets on iron foam as three-dimensional electrode for electrokinetic remediation of copper, lead and zinc co-contaminated soil","authors":"Lu Liu, Qiming Wang, Junhao Zheng, Siying Zhao, Hao Xu, Shengguo Xue, Weichun Yang","doi":"10.1016/j.jhazmat.2025.138587","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138587","url":null,"abstract":"The combined contamination of heavy metals, such as copper, lead, and zinc, in soil poses a global environmental challenge, threatening soil quality, ecosystems, and human health. A novel three-dimensional electrokinetic (3D EK) system utilizing FeSx nanosheets loaded on iron foams (FeS@IF) as the third electrode was developed to enhance the electrokinetic remediation of co-contaminated soils. The application of this system achieved significantly higher removal efficiencies for Cu (34.73% vs 15.79%), Pb (36.85% vs 26.14%), and Zn (47.79% vs 29.43%) compared to traditional two-dimensional electrokinetic remediation. Soil pH was maintained within a near-neutral range (6.37–7.34), while the stability of residual heavy metals was enhanced, increasing the proportion of Zn in the residual fraction from 50.3% to ~75.0%. The system electrolytes were reusable, and the recyclable FeS@IF electrode avoided the release of heavy metals back into the soil. The synergistic effects of high electrical conductivity, soluble iron content, and adsorption capacity of the FeS@IF electrode were key to its superior performance. Additionally, microbial community analysis revealed an increase in bacterial abundance. In conclusion, this work demonstrates an efficient and environmental-friendly 3D electrode system for soil remediation, offering a sustainable solution for reducing heavy metal pollution and protecting the environment and human health.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"44 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933522","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}