Journal of Environmental Management最新文献

{"title":"Enhancing caproate production in lactate-containing effluents by Megasphaera hexanoica through acetate modulation","authors":"Zeyu Wang ,&nbsp;Jun Chen ,&nbsp;María C. Veiga ,&nbsp;Christian Kennes","doi":"10.1016/j.jenvman.2025.125327","DOIUrl":"10.1016/j.jenvman.2025.125327","url":null,"abstract":"<div><div>The anaerobic bacterium <em>Megasphaera hexanoica</em> has great potential for caproate production through reverse β-oxidation using lactate, acetate, and butyrate as substrates. This study assessed the effect of acetate concentrations (10–50 mM) on caproate biosynthesis, lactate oxidation, and cell synthesis in <em>M</em>. <em>hexanoica</em>. At 30 mM acetate, caproate production reached 42.83 mM, with an electron efficiency of 67.03 % and a specific productivity of 4.47 g_CA·h⁻¹·g_DCW⁻¹. Subsequent fed-batch experiments with lactate, acetate, and butyrate maintained continuous caproate production, achieving 65.21 mM. Bioreactor assays further validated the strategy, yielding 65.25 mM caproate over 180 h. Mechanistic analysis demonstrated that 30 mM acetate optimized acetyl-CoA flux and enhanced caproyl-CoA transferase activity (3.5 U‧mg⁻¹), supporting caproate synthesis. Kinetic modeling demonstrated the Logistic model fit lactate consumption (R² = 0.991), while the Fitzhugh model captured caproate production (R² = 0.991, NRMSE = 1.137). The findings offer practical insights for industrial-scale caproate production.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"383 ","pages":"Article 125327"},"PeriodicalIF":8.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Repurposing shared bike frames into rural infrastructure","authors":"Cheng Qian ,&nbsp;Zhao Ma","doi":"10.1016/j.jenvman.2025.125229","DOIUrl":"10.1016/j.jenvman.2025.125229","url":null,"abstract":"<div><div>While bike-sharing systems have generated significant economic benefits, they have also faced challenges regarding the disposal and recycling of discarded bicycle frames. A potential solution to reuse these difficult-to-recycle frames for essential public service facilities in rural areas has not yet been thoroughly explored. Using shape grammar as a design method, this study examines two typical bicycle frame designs with different geometric properties and successfully repurpose the frames into various public service facilities, such as public tables and chairs, railings, installations, and public restrooms. The research highlights the significant potential for the reuse of discarded bicycle frames by reducing resource waste and providing essential infrastructure for underdeveloped rural areas to narrow the urban-rural disparity. The innovative approach presented in this study offers new directions for future research and practical applications in waste recycling.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"382 ","pages":"Article 125229"},"PeriodicalIF":8.0,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aquatic toxicity of leachates from crystalline silicon photovoltaic components","authors":"Brianna C. Tavolacci,&nbsp;Preeti Nain,&nbsp;Annick Anctil","doi":"10.1016/j.jenvman.2025.125400","DOIUrl":"10.1016/j.jenvman.2025.125400","url":null,"abstract":"<div><div>Previous ecotoxicological assessments of solar photovoltaic (PV) technologies vary considerably and focus solely on the active cell layer. A comprehensive evaluation of all possible sources of toxicity is required for proper disposal classification of waste materials. We evaluated the aquatic ecotoxicity of separated PV components from three crystalline silicon modules to crustacea, <em>Daphnia magna</em>. Modules were separated into three categories for testing: 1) powdered glass and cell, 2) encapsulation and back sheet polymers, and 3) junction box and cables. Batch leachates were used in bioassays and assessed for metal and microplastic leaching. The powder and polymers from two tested modules had little observed impact on daphnids, while the third showed significant toxicity with EC50s at 5% or less leachate. One junction box and cable mixture had significant toxicity with an EC50 of less than 10%. Upon metal analysis, Al and Ag leached in high concentrations upon metal analysis and were the primary suspects for ecotoxicological effects. Microplastics were not detected in powder or encapsulation and back sheet leachates, while there was evidence of hydrocarbon polymers in junction box and cable leachates. This work confirmed that metals in the active layer of solar modules are a primary source of concern, and potential microplastic leaching from junction boxes and cables should not be overlooked. Overall, the acute toxicity of silicon solar photovoltaics depends on the module type, components considered, and leachate exposure concentrations.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"382 ","pages":"Article 125400"},"PeriodicalIF":8.0,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable vineyard management: Assessing the environmental impact of vermicompost compared over mineral fertilizers","authors":"Sara Lago-Olveira ,&nbsp;Pablo Antelo-Lijo ,&nbsp;Daniel Durán Pereira ,&nbsp;Javier J. Cancela ,&nbsp;Sara González-García","doi":"10.1016/j.jenvman.2025.125192","DOIUrl":"10.1016/j.jenvman.2025.125192","url":null,"abstract":"<div><div>The use of mineral fertilizers in agriculture has been identified as a significant source of pollution, contributing to the formation of hypoxic water bodies and the emergence of a pressing public health concern in numerous developing countries due to nitrate contamination of drinking water. In response to the increasing recognition of the need for more sustainable fertilization methods, this study investigates the potential for vermicompost to outperform mineral fertilizers in terms of environmental performance in Galician vineyards (Northwest Spain) using the Life Cycle Assessment methodology. The analysis followed a cradle-to-gate approach, conducting a comparison between vermicompost and synthetic fertilizers across fourteen impact categories, including biodiversity loss and novel ecosystem services indicators (e.g., water purification, soil erosion prevention, and carbon sequestration).</div><div>The results indicated that the use of vermicompost resulted in greater environmental impacts compared to conventional grape production (up to 17 times higher), irrespective of the functional unit, due to the elevated levels of nutrients applied and the considerable influence of vermicompost production on specific impact categories, including water scarcity, terrestrial acidification, and global warming. On the other hand, the use of vermicompost markedly improved carbon sequestration compared to conventional cultivation, with values ranging from −25.75 to −88.73 t C·ha⁻¹ in vermicompost scenarios, as opposed to 26.49 t C·ha⁻¹ in conventional scenarios, effectively offsetting their carbon footprint. In terms of soil erosion control, a decline was observed (73.45 t soil·ha⁻¹), irrespective of the fertilization strategy employed. The most impactful activities identified were disease control and fertilization, primarily due to on-field emissions and the production of phytosanitary products. In contrast, field operations and infrastructure had minimal influence on the overall environmental profile.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"382 ","pages":"Article 125192"},"PeriodicalIF":8.0,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The microclimatic and ecohydrological effects of photovoltaic facilities in arid/semi-arid regions of China: An integrated modeling study","authors":"Jingbo Sun,&nbsp;Wenrui Cui,&nbsp;Wenhui Wang,&nbsp;Xiaofan Yang","doi":"10.1016/j.jenvman.2025.125395","DOIUrl":"10.1016/j.jenvman.2025.125395","url":null,"abstract":"<div><div>Photovoltaic (PV) facilities play a pivotal role in restructuring energy systems and mitigating carbon emissions. However, they also alter local microclimates and ecohydrological conditions, especially in arid and semi-arid regions. Most existing studies focus on individual environmental factors and overlook the coupled interactions among soil, vegetation, atmosphere, and PV infrastructure. To address this, we developed a novel soil–plant–PV–atmosphere continuum (SPPVAC) model that integrates airflow, heat, and moisture transport processes with vegetation dynamics. The model was validated with field observations and applied to a representative PV site in Zhangjiakou, northern China. Results show that PV facilities reduce wind speed by 27.6–42.3 %, increase air temperature by 2.31 °C, and raise humidity by 35.8 % in sheltered areas. These microclimatic changes enhance biomass productivity of soybean, alfalfa, and parsnip by 48.3 %, 42.9 %, and 26.7 %, respectively. Crops with higher leaf area density exhibited stronger transpiration and microclimate regulation. This study provides an integrated simulation framework to evaluate microclimate–vegetation feedback under PV systems and offers crop-specific insights for optimizing agrivoltaic design. The findings highlight the potential of PV infrastructure to support both renewable energy generation and ecological restoration.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"382 ","pages":"Article 125395"},"PeriodicalIF":8.0,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How do FDI and tax competition of local governments affect PM2.5 rebound effects? Evidence from China","authors":"Xiao Han ,&nbsp;Yi Li ,&nbsp;Meiying Xie ,&nbsp;Yichen Wang","doi":"10.1016/j.jenvman.2025.125412","DOIUrl":"10.1016/j.jenvman.2025.125412","url":null,"abstract":"<div><div>Rebound effects of fine particulate matter (PM_2.5) pollution occurs when improvements in environmental efficiency fail to achieve the expected mitigation. Under economic tournaments, local government competition plays a critical role in addressing the rebound effects. However, it remains unclear whether local government competition exacerbates or mitigates the rebound effects based on different competition means. Particularly in China, local governments often attract foreign direct investment (FDI) and take tax incentives to gain economic advantages. Therefore, this study aims to explore how local government competition affects PM_2.5 rebound effects using dynamic spatial Durbin model, focusing on the differences between FDI and tax competition. The results reveal an inverted-U relationship between FDI competition and PM_2.5 rebound effects, with an inflection point at 20.706 billion Chinese Yuan. While for every 1% increase in tax competition, the PM_2.5 rebound effects consistently increase by 0.137%. Notably, the impact of FDI competition shows significant regional heterogeneity. In economically developed regions, FDI competition surpasses the inflection point of the inverted-U curve, whereby a 1% increase in FDI competition mitigates the rebound effects by 0.064%. While in underdeveloped regions, FDI competition remains at the promotion interval, exacerbating the rebound effects by 0.122% per 1% FDI competition increase. This study offers a theoretical framework to explain how local government competition yields different environmental consequences. The evidence-based findings also guide policymakers to promote environmental-friendly FDI with regional conditions and curb tax competition, balancing economic and environmental priorities.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"382 ","pages":"Article 125412"},"PeriodicalIF":8.0,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The reliability of CrAssphage in human fecal pollution detection: A cross-regional MST marker assessment","authors":"D. Toribio-Avedillo ,&nbsp;E. Ballesté ,&nbsp;C. García-Aljaro ,&nbsp;C. Stange ,&nbsp;A. Tiehm ,&nbsp;C. Sánchez-Cid ,&nbsp;E. Mulogo ,&nbsp;A. Nasser ,&nbsp;R. Santos ,&nbsp;K. Nemes ,&nbsp;A.R. Blanch","doi":"10.1016/j.jenvman.2025.125399","DOIUrl":"10.1016/j.jenvman.2025.125399","url":null,"abstract":"<div><div>Microbial Source Tracking (MST) markers play a key role in identifying sources of fecal contamination, particularly human-associated pollution, which is critical for public health. This study investigates the distribution and reliability of three MST markers (crAssphage, HMBif, and HF183) across various environmental contexts in Europe, Asia, and Africa. Samples were obtained from wastewater treatment plants (WWTPs) and rivers across different catchment areas, including sampling during extreme weather conditions such as heavy rainfall and drought. The concentrations of these MST markers were measured and compared with traditional fecal indicators.</div><div>The obtained results indicate that crAssphage showed consistently the highest prevalence and concentrations in all regions and sample types, demonstrating its robustness as a marker of human fecal contamination. Population density and climatic conditions significantly influenced marker levels, with the highest concentrations found in highly populated areas with moderate climates. The impact of extreme weather events was different for each condition: heavy rainfall resulted in elevated MST marker concentrations, likely due to sediment resuspension, while drought led to more inconsistent results.</div><div>Strong correlations were observed among the three MST markers and between these markers and conventional fecal indicators. This study underscores the value of crAssphage as a reliable and effective tool for tracking human fecal pollution and highlights the influence of environmental and climatic factors on MST marker behavior.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"382 ","pages":"Article 125399"},"PeriodicalIF":8.0,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrating bioaccessibility into human health risk assessment: Stabilization approach of smelter-contaminated soil with natural organic amendments","authors":"Minhee Kim ,&nbsp;Jong-Sung Kim ,&nbsp;Hee-Myong Ro ,&nbsp;Junho Han","doi":"10.1016/j.jenvman.2025.125364","DOIUrl":"10.1016/j.jenvman.2025.125364","url":null,"abstract":"<div><div>This study evaluates the stabilization of arsenic (As), copper (Cu), and lead (Pb) in moderately contaminated soil near a Cu smelter of South Korea using natural organic amendments (NOAs) at different ratios of fulvic and humic acids. The research revealed varying behaviors of anionic metalloid (As) and cationic metals (Cu and Pb) under different ratios of fulvic and humic acids over the incubation period. Sequential extraction results showed opposite trend of pH effect on anionic metalloid and cationic metals, which showed the increase of As extractability with pH increase and <em>vice versa</em> for cationic metals. By incorporating bioaccessibility—derived from chemically extractable fractions—into human health risk assessment, this study provides a more realistic estimation of non-carcinogenic and carcinogenic risks compared to conventional assessments based solely on total metal concentrations. The NOA treatments significantly reduced hazard index and total cancer risk values for both adults and children. The findings emphasize the need for stabilization strategies tailored to both metal speciation and bioaccessibility, while monitoring the stability to prevent metal remobilization due to environmental changes. This research offers insights into sustainable remediation approaches for moderately contaminated soils, particularly in regions with fluctuating pH conditions, potentially improving both environmental safety and public health outcomes.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"382 ","pages":"Article 125364"},"PeriodicalIF":8.0,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biodiversity in agroforestry systems implemented in tropical ecoregions: a systematic review","authors":"Ezequiel Ortolan ,&nbsp;Everton A. Maciel ,&nbsp;Valéria Forni Martins","doi":"10.1016/j.jenvman.2025.125317","DOIUrl":"10.1016/j.jenvman.2025.125317","url":null,"abstract":"<div><div>Agroforestry systems enable food production while potentially conserving biodiversity, but it is still unknown how their characteristics, matrix, and ecoregion affect diversity. We aim at understanding biodiversity patterns in agroforestry systems originated from areas with alternative land use and natural vegetation in tropical ecoregions. Through a systematic review, we detected differences between agroforestry systems with the two origins, such as crop type, management strategy, matrix, and ecoregion. Agroforestry systems with the two origins had lower plant richness, tree basal area, and canopy cover than reference areas. We did not find an effect of agroforestry systems on vertebrate richness and only those originated from areas with natural vegetation showed a negative effect on invertebrate richness. The factors affecting species richness varied between agroforestry systems with the two origins and among taxonomic groups. However, in general, agroforestry systems implemented with greater vegetation diversity, with crop types that form more complex vegetation structure, less intensive management, and more permeable matrices had positive effects on species richness. Last, the species richness in agroforestry systems did not increase with increasing natural plant richness of the different ecoregions. We recommend that management strategies that do not greatly modify vegetation structure and resource availability to animals, as well as landscape features that enable the movement of animals and propagules are adopted in agroforestry systems when they aim at environmental management. Importantly, we advocate for the strict prohibition of agroforestry systems implementation in areas with preserved native vegetation due to the negative effects on plant and invertebrate communities.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"382 ","pages":"Article 125317"},"PeriodicalIF":8.0,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Towards a regional baseline of Greenland's continental shelf seabed biodiversity","authors":"Nadescha Zwerschke ,&nbsp;Nanette Hammeken Arboe ,&nbsp;Johanna Behrisch ,&nbsp;Martin Blicher ,&nbsp;David K.A. Barnes","doi":"10.1016/j.jenvman.2025.125285","DOIUrl":"10.1016/j.jenvman.2025.125285","url":null,"abstract":"<div><div>Polar ecosystems are on the forefront of climate change, yet large parts of our polar seas remain unexplored. This affects our ability to detect change in these regions and hampers global science driven conservation efforts. In Greenland, which is heavily reliant on demersal fisheries, this also affects the economy by complicating sustainability certification. Based on a 8-year benthic bycatch monitoring programme recording primarily megabenthos (&gt;1 cm), we provide a first baseline of the benthic ecosystem in Greenland. We calculated richness, rarity, vulnerable marine ecosystem indicator taxon richness (VME) and biomass across 21 % of the Greenlandic EEZ and suggest seven areas to be considered for management effort based on the 75th percentile of sample distribution for richness, rarity and VMEs. We could identify a clear pattern between East and West Greenland primarily driven by a greater abundance of ostur sponges in the East and greater richness and presence of rare species in the West. We identified patterns of geographic-scale richness (Gamma richness) across depth, latitude, distance from coast and temperature and found that richness decreased with latitude and depth and increased towards the shelf-break as expected. Some deviation from these patterns might have been due to sampling bias. Generally, taxa were found to occupy large spatial regions with few endemic or rare species across the study region. This study is the largest assessment of the benthic Greenlandic shelf ecosystem to date and offers essential guidance to policymakers across the Arctic by providing key knowledge on a hitherto understudied area in the Arctic and implementing an easily applicable approach to conservation area selection that is achievable by nations with limited resources.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"382 ","pages":"Article 125285"},"PeriodicalIF":8.0,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}