Eco-Environment & Health最新文献

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Enhanced As(III) adsorption-oxidation via synergistic interactions between bacteria and goethite
Eco-Environment & Health Pub Date : 2024-12-18 DOI: 10.1016/j.eehl.2024.12.001
Jie Deng , Shaowei Mi , Chenchen Qu, Qiaoyun Huang, Xionghan Feng, Xiaoming Wang
{"title":"Enhanced As(III) adsorption-oxidation via synergistic interactions between bacteria and goethite","authors":"Jie Deng ,&nbsp;Shaowei Mi ,&nbsp;Chenchen Qu,&nbsp;Qiaoyun Huang,&nbsp;Xionghan Feng,&nbsp;Xiaoming Wang","doi":"10.1016/j.eehl.2024.12.001","DOIUrl":"10.1016/j.eehl.2024.12.001","url":null,"abstract":"<div><div>The adsorption and oxidation of arsenite [As(III)] by soil components are critical processes that influence its toxicity and mobility. However, the specific mechanisms driving the synergistic interactions among bacteria, soil minerals, and humic acid (HA) in these processes remain insufficiently understood. This study investigated the effects of goethite and HA association on As(III) adsorption-oxidation by the As(III)-oxidizing bacterium SY8 using batch incubation experiments and spectroscopic analyses. The results indicated that goethite inhibited the growth of SY8, but its binary and ternary composites with HA and SY8 substantially enhanced the adsorption and oxidation of As(III) compared to SY8 alone. This enhancement could be attributed to the generation of hydroxyl radicals (·OH) through Fenton-like reactions that contribute to the enhanced oxidation of As(III). The Fenton-like reactions involved interactions between H<sub>2</sub>O<sub>2</sub> and goethite, as well as the activation of molecular O<sub>2</sub> by structural Fe(II). Furthermore, the proportion of As(V) associated with the solids was lower than that in the solution, suggesting that As(III) oxidation by SY8 was potentially inhibited by As(III) adsorption on goethite. Additionally, HA did not affect SY8 growth or its As(III) oxidation capability, but slightly enhanced As adsorption on the composites. These findings reveal a complex interplay among microbial, mineral, and organic matter interactions. Understanding these interactions is essential for elucidating soil As biogeochemical processes and developing effective remediation strategies for As-contaminated environments.</div></div>","PeriodicalId":29813,"journal":{"name":"Eco-Environment & Health","volume":"4 1","pages":"Article 100131"},"PeriodicalIF":0.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143154368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ambient air pollution exposure in relation to cerebral small vessel disease in Chinese population: A cranial magnetic resonance imaging-based study
Eco-Environment & Health Pub Date : 2024-12-13 DOI: 10.1016/j.eehl.2024.10.004
Yudiyang Ma , Ying Hui , Linxi Tang , Jianing Wang , Meiqi Xing , Lei Zheng , Feipeng Cui , Shuohua Chen , Shouling Wu , Zhenchang Wang , Yaohua Tian
{"title":"Ambient air pollution exposure in relation to cerebral small vessel disease in Chinese population: A cranial magnetic resonance imaging-based study","authors":"Yudiyang Ma ,&nbsp;Ying Hui ,&nbsp;Linxi Tang ,&nbsp;Jianing Wang ,&nbsp;Meiqi Xing ,&nbsp;Lei Zheng ,&nbsp;Feipeng Cui ,&nbsp;Shuohua Chen ,&nbsp;Shouling Wu ,&nbsp;Zhenchang Wang ,&nbsp;Yaohua Tian","doi":"10.1016/j.eehl.2024.10.004","DOIUrl":"10.1016/j.eehl.2024.10.004","url":null,"abstract":"<div><div>Cerebral small vessel disease (CSVD), a chronic and progressive vascular disorder closely associated with stroke and dementia, is primarily identified and diagnosed in cranial magnetic resonance imaging (MRI). Given the limited evidence on the relationship between air pollution and CSVD, this study aimed to investigate the links between multiple air pollutants exposure and CSVD risk. Eligible subjects and their cranial MRI data were obtained from the Multi-modality Medical Imaging Study Based on Kailuan Study, totaling 1216 participants. Ordinal and binary logistic regression models were utilized to evaluate the associations between air pollution exposure and the neuroimaging markers of CSVD. For each interquartile range increase in air pollutant exposure during the examination year, the odds ratios and 95% confidence intervals of the increased white matter hyperintensity burden were 1.45 (1.15, 1.84) for PM<sub>2.5</sub>, 1.72 (1.27, 2.34) for PM<sub>10</sub>, 1.26 (1.05, 1.51) for SO<sub>2</sub>, 1.52 (1.16, 2.00) for NO<sub>2</sub>, and 1.63 (1.26, 2.13) for CO. The results remained consistent even when the model was fitted using air pollution from different exposure windows. Furthermore, the estimated effect sizes for the total burden of CSVD were 1.20 (1.01, 1.43) for PM<sub>2.5</sub>, 1.39 (1.12, 1.74) for PM<sub>10</sub>, 1.26 (1.03, 1.53) for NO<sub>2</sub>, and 1.30 (1.08, 1.58) for CO. These findings suggest that a positive link between air pollutants exposure and neuroimaging markers of CSVD in the Chinese population, revealing the importance of controlling environmental pollutants to protect the population against cerebral small vessel damage.</div></div>","PeriodicalId":29813,"journal":{"name":"Eco-Environment & Health","volume":"4 1","pages":"Article 100129"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143154849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of regional environmental variables on the radiative forcing of atmospheric microplastics
Eco-Environment & Health Pub Date : 2024-12-09 DOI: 10.1016/j.eehl.2024.11.002
Hanling Yang , Yining Xue , Xiaoyu Sha , Jintao Yang , Xinling Wang , Balt Suvdantsetseg , Keisuke Kuroda , Jian Pu , Lei Wang
{"title":"Influence of regional environmental variables on the radiative forcing of atmospheric microplastics","authors":"Hanling Yang ,&nbsp;Yining Xue ,&nbsp;Xiaoyu Sha ,&nbsp;Jintao Yang ,&nbsp;Xinling Wang ,&nbsp;Balt Suvdantsetseg ,&nbsp;Keisuke Kuroda ,&nbsp;Jian Pu ,&nbsp;Lei Wang","doi":"10.1016/j.eehl.2024.11.002","DOIUrl":"10.1016/j.eehl.2024.11.002","url":null,"abstract":"<div><div>Atmospheric microplastics (AMPs) can absorb and scatter radiation, which can be quantified by radiative forcing. Although the radiative forcing of AMPs is commonly positive at the global scale, regional environmental variables affect the radiative forcing of aerosols, potentially reversing its directions and cause opposite radiative impacts in the atmosphere. In this study, the total suspended particles were collected within one year in Tianjin, China, and the monthly average concentration of AMPs of 200.0–463.9 items/m<sup>3</sup> was detected. Accordingly, the direct radiative forcing (DRF) of AMPs was calculated as −0.03 to 0.03 W/m<sup>2</sup> at the top of the atmosphere and −0.09 to 0.72 W/m<sup>2</sup> at the Earth's surface, respectively. The surface albedo significantly affects the direction of the DRF of AMPs. A low surface albedo leads to a cooling effect of AMPs in the atmosphere in Tianjin, while a high surface albedo causes a warming effect in the atmosphere. The DRF calculated under different surface albedo indicates that the potential impact of AMPs on atmospheric temperature is relatively complex. The temperature changes caused by AMPs in grassland and bare soil areas may be opposite to those in areas covered by snow and ice.</div></div>","PeriodicalId":29813,"journal":{"name":"Eco-Environment & Health","volume":"4 1","pages":"Article 100128"},"PeriodicalIF":0.0,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143154369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
From submission to publication: An editor's perspective on why Eco-Environment & Health stands out 从投稿到发表:从编辑的角度看为什么生态环境与健康脱颖而出。
Eco-Environment & Health Pub Date : 2024-12-01 DOI: 10.1016/j.eehl.2024.11.001
Li Li
{"title":"From submission to publication: An editor's perspective on why Eco-Environment & Health stands out","authors":"Li Li","doi":"10.1016/j.eehl.2024.11.001","DOIUrl":"10.1016/j.eehl.2024.11.001","url":null,"abstract":"","PeriodicalId":29813,"journal":{"name":"Eco-Environment & Health","volume":"3 4","pages":"Pages 556-557"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11675042/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142903631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effortless alkalinity analysis using AI and smartphone technology, no equipment needed, from freshwater to saltwater
Eco-Environment & Health Pub Date : 2024-11-14 DOI: 10.1016/j.eehl.2024.10.002
Zachary Y. Han , Zihan Zheng , Alan Y. Han , Huichun Zhang
{"title":"Effortless alkalinity analysis using AI and smartphone technology, no equipment needed, from freshwater to saltwater","authors":"Zachary Y. Han ,&nbsp;Zihan Zheng ,&nbsp;Alan Y. Han ,&nbsp;Huichun Zhang","doi":"10.1016/j.eehl.2024.10.002","DOIUrl":"10.1016/j.eehl.2024.10.002","url":null,"abstract":"<div><div>Alkalinity is a crucial water quality parameter with significant environmental and engineered system applications. Various analysis methods exist, from traditional titrations to advanced spectrophotometric and electrochemical techniques, each with specific benefits and limitations. Developing simple, affordable techniques for alkalinity analysis is essential to facilitate extensive and reliable water quality monitoring, empowering citizen scientists, and overcoming financial barriers in traditional monitoring programs. In this work, we developed an equipment-free, user-friendly alkalinity analysis approach accessible to a broad demographic. Specifically, we employed low-cost commercial reagents to generate color changes in response to alkalinity levels in various freshwater and saltwater samples. These images were captured with a smartphone and processed using machine learning models to correlate color intensity with alkalinity levels. After examining the effects of container type, lighting condition, ML algorithms, and sample size, we obtained the best models with R<sup>2</sup> values of 0.868 ± 0.024 and 0.978 ± 0.008, and root-mean-square-error values of 29.5 ± 2.6 and 14.1 ± 2.0 for freshwater and saltwater, respectively. Five inexperienced users utilized this method for alkalinity analysis and achieved comparable results in performance. Additionally, we developed a user-friendly website where users, without prior experience, can upload images to obtain alkalinity readings for their water samples. This AI-powered, equipment-free technology represents a significant milestone in water quality monitoring, deviating from the trend of developing increasingly advanced analytical techniques and serving as a foundation for developing similar methods across various water quality parameters and broader analytical applications.</div></div>","PeriodicalId":29813,"journal":{"name":"Eco-Environment & Health","volume":"4 1","pages":"Article 100125"},"PeriodicalIF":0.0,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143154367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multidimensional patterns of bird diversity and its driving forces in the Yangtze River Basin of China
Eco-Environment & Health Pub Date : 2024-11-01 DOI: 10.1016/j.eehl.2024.10.001
Wei Liu , Tong Mu , Sijia Yuan , Jianfeng Yi , Dandan Yu , Jiaqi Li , Fangzhou Ma , Yaqiong Wan , Jing Chen , Riquan Zhang , David S. Wilcove , Haigen Xu
{"title":"Multidimensional patterns of bird diversity and its driving forces in the Yangtze River Basin of China","authors":"Wei Liu ,&nbsp;Tong Mu ,&nbsp;Sijia Yuan ,&nbsp;Jianfeng Yi ,&nbsp;Dandan Yu ,&nbsp;Jiaqi Li ,&nbsp;Fangzhou Ma ,&nbsp;Yaqiong Wan ,&nbsp;Jing Chen ,&nbsp;Riquan Zhang ,&nbsp;David S. Wilcove ,&nbsp;Haigen Xu","doi":"10.1016/j.eehl.2024.10.001","DOIUrl":"10.1016/j.eehl.2024.10.001","url":null,"abstract":"<div><div>Biodiversity is fundamental to human well-being and economic development. The Yangtze River, the largest river in China, faces biodiversity loss due to habitat degradation, climate change, and other anthropogenic threats. However, the long-term changes in the region's biodiversity remain poorly understood. Here, we constructed an optimized living planet index (LPIO) by combining Partial Least Squares Structural Equation Modeling and Random Forest Modeling. Using data from a monitoring network of 536 sites, we observed an increasing trend in terrestrial bird diversity and functional complexity across the entire watershed from 2011 to 2020. Our findings indicate that a large-scale ecological restoration program has contributed to increases in terrestrial and aquatic bird diversity in the Yangtze River Basin. In contrast, bird diversity in the downstream area has decreased by 2.83%, largely due to a rapid decline in wetland birds. The degradation of wetland habitats and insufficient conservation measures have negatively impacted bird diversity in the downstream region. This suggests that although there have been significant improvements in terrestrial bird diversity, more effective wetland restoration is necessary for biodiversity conservation. We recommend optimizing the national large-scale biodiversity monitoring network and increasing the number of upstream monitoring sites.</div></div>","PeriodicalId":29813,"journal":{"name":"Eco-Environment & Health","volume":"4 1","pages":"Article 100124"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143154400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Global modeling of photochemical reactions in lake water: A comparison between triplet sensitization and direct photolysis
Eco-Environment & Health Pub Date : 2024-09-19 DOI: 10.1016/j.eehl.2024.09.001
Luca Carena , Ángela García-Gil , Javier Marugán , Davide Vione
{"title":"Global modeling of photochemical reactions in lake water: A comparison between triplet sensitization and direct photolysis","authors":"Luca Carena ,&nbsp;Ángela García-Gil ,&nbsp;Javier Marugán ,&nbsp;Davide Vione","doi":"10.1016/j.eehl.2024.09.001","DOIUrl":"10.1016/j.eehl.2024.09.001","url":null,"abstract":"<div><div>The equivalent monochromatic wavelength (EMW) approximation allowed us to predict the photochemical lifetimes of the lipid regulator metabolite clofibric acid (CLO, triplet sensitization) and of the non-steroidal anti-inflammatory drug diclofenac (DIC, direct photolysis + triplet sensitization) in lakes worldwide. To do so, we used large lake databases that collect photochemically significant parameters such as water depth and dissolved organic carbon, which allow for a preliminary assessment of some photoreactions. Extension to other photoreactions is currently prevented by the lack of important parameters such as water absorption spectrum, suspended solids, nitrate, nitrite, pH, and inorganic carbon on a global scale. It appears that triplet-sensitized CLO photodegradation would be strongly affected by the dissolved organic carbon values of the lake water and, for this reason, it would be fastest in Nordic environments. By contrast, direct photolysis (DIC) would be highly affected by sunlight irradiance and would proceed at the highest rates in the tropical belt. Interestingly, the predicted lifetimes of CLO and DIC are shorter than the residence time of water in the majority of global lake basins, which suggests a high potential for photoreactions to attenuate the two contaminants on a global scale. Photodegradation of DIC and CLO would also be important in waste stabilization ponds, except for elevated latitudes during winter, which makes these basins potentially cost-effective systems for the partial removal of these emerging contaminants from wastewater.</div></div>","PeriodicalId":29813,"journal":{"name":"Eco-Environment & Health","volume":"4 1","pages":"Article 100123"},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786762/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143081008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular modeling to elucidate the dynamic interaction process and aggregation mechanism between natural organic matters and nanoplastics
Eco-Environment & Health Pub Date : 2024-09-11 DOI: 10.1016/j.eehl.2024.08.004
Chi Zhang , Zhiyu Zhou , Mengning Xi , Haozhe Ma , Junhao Qin , Hanzhong Jia
{"title":"Molecular modeling to elucidate the dynamic interaction process and aggregation mechanism between natural organic matters and nanoplastics","authors":"Chi Zhang ,&nbsp;Zhiyu Zhou ,&nbsp;Mengning Xi ,&nbsp;Haozhe Ma ,&nbsp;Junhao Qin ,&nbsp;Hanzhong Jia","doi":"10.1016/j.eehl.2024.08.004","DOIUrl":"10.1016/j.eehl.2024.08.004","url":null,"abstract":"<div><div>The interactions of nanoplastics (NPs) with natural organic matters (NOMs) dominate the environmental fate of both substances and the organic carbon cycle. Their binding and aggregation mechanisms at the molecular level remain elusive due to the high structural complexity of NOMs and aged NPs. Molecular modeling was used to understand the detailed dynamic interaction mechanism between NOMs and NPs. Advanced humic acid models were used, and three types of NPs, i.e., polyethylene (PE), polyvinyl chloride (PVC), and polystyrene (PS), were investigated. Molecular dynamics (MD) simulations revealed the geometrical change of the spontaneous formation of NOMs-NPs supramolecular assemblies. The results showed that pristine NPs initially tend to aggregate homogeneously due to their hydrophobic nature, and then NOM fragments are bound to the formed NP aggregates mainly by vdW interaction. Homo- and hetero-aggregation between NOMs and aged NPs occur simultaneously through various mechanisms, including intermolecular forces and Ca<sup>2+</sup> bridging effect, eventually resulting in a mixture of supramolecular structures. Density functional theory calculations were employed to characterize the surface properties and reactivity of the NP monomers. The molecular polarity indices for unaged PE, PS, and PVC were 3.1, 8.5, and 22.2 kcal/mol, respectively, which increased to 43.2, 51.6, and 42.2 kcal/mol for aged NPs, respectively, indicating the increase in polarity after aging. The vdW and electrostatic potentials of NP monomers were visualized. These results clarified the fundamental aggregation processes, and mechanisms between NPs and NOMs, providing a complete molecular picture of the interactions of nanoparticles in the natural aquatic environment.</div></div>","PeriodicalId":29813,"journal":{"name":"Eco-Environment & Health","volume":"4 1","pages":"Article 100122"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11773237/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143068250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Leveraging the One Health concept for arsenic sustainability 利用 "一个健康 "概念促进砷的可持续性
Eco-Environment & Health Pub Date : 2024-09-01 DOI: 10.1016/j.eehl.2024.02.006
{"title":"Leveraging the One Health concept for arsenic sustainability","authors":"","doi":"10.1016/j.eehl.2024.02.006","DOIUrl":"10.1016/j.eehl.2024.02.006","url":null,"abstract":"<div><p>Arsenic (As) is a naturally occurring chemical element widely distributed in the Earth's crust. Human activities have significantly altered As presence in the environment, posing significant threats to the biota as well as human health. The environmental fates and adverse outcomes of As of various species have been extensively studied in the past few decades. It is imperative to summarize these advances as a whole to provide more profound insights into the As cycle for sustainable development. Embracing the One Health concept, we systematically reviewed previous studies in this work and explored the following three fundamental questions, i.e., what the trends and associated changes are in As contamination, how living organisms interact and cope with As contamination, and most importantly what to do to achieve a sustainable future with As. By focusing on one critical question in each section, this review aims to provide a full picture of the complexity of environmental As. To tackle the significant research challenges and gaps in As pollution and mitigation, we further proposed a One Health framework with potential coping strategies, guiding a coordinated agenda on dealing with legacy As in the environment and ensuring a sustainable As future.</p></div>","PeriodicalId":29813,"journal":{"name":"Eco-Environment & Health","volume":"3 3","pages":"Pages 392-405"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772985024000231/pdfft?md5=235fd01e6a5457522ffa5a8858b8bf9e&pid=1-s2.0-S2772985024000231-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140280983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of 3D microstructure of porous media on DNAPL migration and remediation by surface active agents in groundwater 多孔介质的三维微观结构对地下水中 DNAPL 迁移和表面活性物质修复的影响
Eco-Environment & Health Pub Date : 2024-08-30 DOI: 10.1016/j.eehl.2024.08.003
Zhou Cheng , Ming Wu , Yanru Hao , Cehui Mo , Qusheng Li , Jianfeng Wu , Jichun Wu , Bill X. Hu , Guoping Lu
{"title":"Effects of 3D microstructure of porous media on DNAPL migration and remediation by surface active agents in groundwater","authors":"Zhou Cheng ,&nbsp;Ming Wu ,&nbsp;Yanru Hao ,&nbsp;Cehui Mo ,&nbsp;Qusheng Li ,&nbsp;Jianfeng Wu ,&nbsp;Jichun Wu ,&nbsp;Bill X. Hu ,&nbsp;Guoping Lu","doi":"10.1016/j.eehl.2024.08.003","DOIUrl":"10.1016/j.eehl.2024.08.003","url":null,"abstract":"<div><div>Aquifers composed of porous granular media are important to human beings because they are capable of storing a large amount of groundwater. Contaminant migration and remediation in subsurface environments are strongly influenced by three-dimensional (3D) microstructures of porous media. In this study, fractal models are developed to investigate contaminant transport and surfactant-enhanced aquifer remediation (SEAR) for the regular tetrahedron microstructure (RTM) and right square pyramid microstructure (RSPM). The relationships of permeability and entry pressure are derived for these two kinds of 3D microstructures of granular porous media. Afterward, the difference in perchloroethylene (PCE) migration and SEAR efficiency between RTM and RSPM is investigated by the numerical simulation based on a synthetic heterogeneous granular aquifer. Results indicate that PCE penetrates faster and spreads farther in RSPM-based aquifers compared with RTM-based aquifers. Further, SEAR in RTM-based aquifers can achieve remediation efficiencies of 66.129%–92.214% with a mean of 84.324%, which is clearly lower than the SEAR efficiency of 70.149%–94.773% (with a mean of 89.122%) in RSPM-based aquifers. Findings are significant for understanding the 3D microstructure of porous media and how the microstructure of porous media affects macroscopic contaminant behaviors and remediation.</div></div>","PeriodicalId":29813,"journal":{"name":"Eco-Environment & Health","volume":"3 4","pages":"Pages 466-475"},"PeriodicalIF":0.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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