Environmental systems research最新文献

{"title":"Ureolytic bacteria for MICP application to iron-rich slag materials for waste stabilization and carbon sequestration.","authors":"Samantha M Wilcox, Catherine N Mulligan, Carmen Mihaela Neculita","doi":"10.1186/s40068-026-00472-4","DOIUrl":"10.1186/s40068-026-00472-4","url":null,"abstract":"<p><p>Microbial induced carbonate precipitation (MICP) is a novel soil and cement strengthening technique for civil and geotechnical engineering fields. Recently emerging is the use of MICP as a biological remediation strategy to immobilize contaminants, strengthen metalliferous waste, and sequester carbon dioxide from mining activities. MICP has a broad spectrum of benefits, but application of bacteria species to inhospitable mining wastes is challenging. Most studies applying MICP to metal and/or metalloid contaminated waste utilize a biostimulation approach. This is not always feasible based on the toxic nature of the waste. This study evaluated the ecotoxicity of 2 iron-rich slag materials prior to bacterial screening and enrichment. S1 showed bacterial toxicity but not plant toxicity, while S2 showed high bacterial and plant toxicity. Bacterial screening found a lack of significant DNA in both iron-rich slag materials. Bacterial enrichment was able to stimulate growth of <i>Bacillus cereus</i> (PZ013063.1) from S1, while S2 remained sterile after 1-cycle of enrichment. Stimulated <i>Bacillus cereus</i> was compared to exogeneous, ureolytic <i>Sporosarcina pasteurii</i>, in which the latter showed higher bacterial growth and tolerance to a wider range of environmental conditions. Furthermore, since <i>Bacillus cereus</i> exhibited phenotypic heterogeneity of the urease gene during isolation, bioaugmentation using <i>Sporosarcina pasteurii</i> for MICP application to iron-rich slag materials is recommended.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1186/s40068-026-00472-4.</p>","PeriodicalId":101406,"journal":{"name":"Environmental systems research","volume":"15 1","pages":"32"},"PeriodicalIF":5.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13279745/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148298350","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}

{"title":"Quantitative modeling of nanoplastic accumulation from single-use water bottles: exposure scenarios and tissue concentration estimates.","authors":"Sarah Sajedi, Chunjiang An","doi":"10.1186/s40068-026-00459-1","DOIUrl":"10.1186/s40068-026-00459-1","url":null,"abstract":"<p><p>The widespread use of single-use plastic (SUP) water bottles has raised growing concerns about chronic human exposure to nanoplastics (NPs). This study presents a quantitative assessment of NP accumulation in human tissues resulting from the long-term consumption of SUP water bottles. Using survey-derived consumption data and the Human Exposure and Absorption Simulation Interface (HEASI) Plastic Model, we modeled NP intake, gastrointestinal (GI) retention, and whole-body tissue accumulation under steady-state conditions. Three exposure scenarios were developed based on published NP concentration data in SUP water bottles, ranging from 1.10 × 10⁵ to 1.0 × 10¹¹ particles/liter. Our findings reveal that whole-body tissue accumulation of NPs varies significantly with consumption habits and assumed biliary excretion rates, with modeled concentrations ranging from 0.00084 to 226.68 μg/L. These values represent the steady-state amount of nanoplastics absorbed into systemic circulation and retained in tissues, rather than simply the intake rate. The conversion to μg/L was based on the average mass per particle and reflects internal exposure levels relevant to toxicological assessment. The study also estimates NP concentrations in the GI tract and stool, highlighting substantial variability across exposure scenarios. Log₁₀ analysis of NP concentrations indicates a dose-dependent accumulation trend, particularly under high-consumption and high-exposure scenarios, although some variability is observed in lower exposure brackets due to the dynamics of the kinetic model. Polyamide and polystyrene were modeled as the most prevalent NP types in tissues, based on their relative abundance in SUP water bottles; however, this extrapolation assumes uniform uptake and retention across polymers and should be interpreted with caution. These results suggest that chronic exposure to NPs from SUP water bottles may pose potential health risks, especially in populations with high consumption rates. This study calls for the development of regulatory benchmarks, improved detection methods, and reduced use of SUP water bottles to limit NP exposure and protect public health.</p>","PeriodicalId":101406,"journal":{"name":"Environmental systems research","volume":"15 1","pages":"19"},"PeriodicalIF":5.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13086655/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147725320","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}

{"title":"Study on the persistence of ciprofloxacin and sulfamethoxazole in simulated drinking water systems.","authors":"Victoria Rilstone, Yves Filion, Pascale Champagne","doi":"10.1186/s40068-025-00396-5","DOIUrl":"10.1186/s40068-025-00396-5","url":null,"abstract":"<p><p>The antibiotics ciprofloxacin and sulfamethoxazole are well-known to be persistent in drinking water, as they have been detected at the highest concentration and frequency, respectively. These antibiotics persist despite their residence time, water treatment, and environmental conditions encountered in drinking water distribution systems. To better understand this phenomenon, the objectives of this study were to determine their degradation kinetics at a residual, sub-minimum inhibitory concentration while exposed to multi-species biofilms in polyvinyl chloride (PVC) pipe, as well as examine their effect on total cell count (TCC). The results revealed that both antibiotics continued to be detected after the experimental period of 12 days. Ciprofloxacin concentrations decreased by 31.1% (± 3.9%) and 27.4% (± 7.7%) during exposure to the biofilm and PVC-only control respectively, whereas sulfamethoxazole concentrations decreased by 87.2% (± 15.8%) and 3.6% (± 8.6%) during exposure to the biofilm and PVC-only control, respectively. Biofilm TCC increased significantly when exposed to ciprofloxacin (<i>p</i>-value < 0.005), but showed no significant change when exposed to sulfamethoxazole (<i>p</i>-value > 0.05), which suggested that ciprofloxacin enhanced biofilm formation. These results address the gap in antibiotic persistence research by tracing their concentrations, elucidating the mechanisms of sorption and degradation, and discussing their relative implications. As antibiotics continue to persist in drinking water, their interaction with biofilms may contribute to the long-term selection of antibiotic-resistant bacteria, posing potential risks to drinking water safety and public health.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1186/s40068-025-00396-5.</p>","PeriodicalId":101406,"journal":{"name":"Environmental systems research","volume":"14 1","pages":"7"},"PeriodicalIF":5.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12033125/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144003666","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}

{"title":"Evolution from the physical process-based approaches to machine learning approaches to predicting urban floods: a literature review.","authors":"Md Shike Bin Mazid Anik, Chunjiang An, S Samuel Li","doi":"10.1186/s40068-025-00409-3","DOIUrl":"10.1186/s40068-025-00409-3","url":null,"abstract":"<p><p>Urban flooding has become a growing concern for many cities due to accelerating urbanisation, changing weather, and drainage system aging. Earlier studies of floods have taken primarily the traditional process-based approach to predicting urban floods, offering limited exploration of recent advancements in AI-driven, real-time, and community-integrated approach, which this paper brings into focus. This paper reviews how flood prediction has improved over the last two decades. It begins by reviewing physical process-based models (PPBMs), which often could not handle the fast changes in cities. New tools like geographic information systems (GIS), light detection and ranging (LiDAR), and satellite images helped improve flood mapping and planning. A big shift came with the use of AI and machine learning. They have made predictions faster, smarter, and more accurately. They allow many types of data, like weather information, sensor data, and social media (crowdsourcing) data. Recently, new tools like Internet of Things devices, deep learning, and hybrid models have brought even more progress. However, there are still challenges. Many cities still do not have the data, sensors, or systems needed to use these tools. Many models work on their own, not linked with city planning or community efforts. Flood solutions must now be more than just technical. Future systems should combine AI, hydrodynamics, GIS, and real-time monitoring, adapt to city change, and include input from communities. Open-source tools, public education, and better planning are also needed to make cities safer and more resilient to costly floods.</p>","PeriodicalId":101406,"journal":{"name":"Environmental systems research","volume":"14 1","pages":"15"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12276141/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144683986","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}

{"title":"A high throughput ambient mass spectrometric approach for identifying the poaching of wild american ginseng.","authors":"Julia E Shaw, Pamela Brunswick, Jolene Lesuk, Lola Rabinovitch, Taylor Filewood, Honoria Kwok, Jeffrey Yan, Robert Cody, Tao Huan, Dayue Shang","doi":"10.1186/s40068-025-00414-6","DOIUrl":"10.1186/s40068-025-00414-6","url":null,"abstract":"<p><p>Rapid identification is critically important in the protection of endangered species listed under the Convention on International Trade in Endangered Species (CITES). One such species is American ginseng (<i>Panax quinquefolius</i>), whose remaining wild populations are vulnerable to the effects of poaching. Direct Analysis in Real Time Time-of-Flight Mass Spectrometry (DART-ToF MS) is a mature but underutilized forensic tool suitable for rapidly analyzing plant materials. This tool offers greater convenience over alternative species identification methods commonly requiring extensive sample preparation and instrument run times. In the current study, four categories of ginseng, including wild and cultivated American ginseng, Korean ginseng (<i>P. ginseng</i>), and Chinese ginseng (<i>P. notoginseng</i>), were analyzed by DART-ToF MS. The collected mass spectra were visually compared by heat map prior to application of multivariate statistical analysis to cluster sample groups, yielding a two-step identification model capable of identifying the origin of blind quality assurance samples. With fast sample preparation, data acquisition, and statistical analysis, DART-ToF MS shows great potential as a forensic screening tool in combating poaching and illegal trade of endangered and CITES-listed species such as wild American ginseng.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1186/s40068-025-00414-6.</p>","PeriodicalId":101406,"journal":{"name":"Environmental systems research","volume":"14 1","pages":"31"},"PeriodicalIF":3.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12718241/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145812330","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}

{"title":"PFAS in water environments: recent progress and challenges in monitoring, toxicity, treatment technologies, and post-treatment toxicity.","authors":"Aya Alsadik, Olufemi Oluseun Akintunde, Hamid R Habibi, Gopal Achari","doi":"10.1186/s40068-025-00411-9","DOIUrl":"10.1186/s40068-025-00411-9","url":null,"abstract":"<p><p>There is growing awareness of the environmental presence of per- and polyfluoroalkyl substances (PFAS) and their harmful effects on animals and humans. Recent studies have revealed changes in human embryonic stem cells and maternal biomarkers, underscoring the severity and unpredictable outcomes associated with long-term exposure to PFAS. Monitoring efforts continually identify additional PFAS compounds worldwide, but a standardized and unified approach is still lacking. Traditional treatment methods such as adsorption and membrane filtration have been effective in removing 80-95% of PFAS from wastewater. However, complete removal of short-chain PFAS remains limited to a few recently developed techniques. The inability of advanced treatment methods to eliminate emerging short-chain and ultrashort-chain PFAS suggests the need for more integrated approaches that target all PFAS classes. Additionally, a few studies have discussed the potential toxicity outcomes of these treatments at both laboratory and full-scale levels. While advanced oxidative processes (AOPs) are rapidly gaining attention for degrading 90-100% of PFAS in sewage, it remains challenging to fully break down PFAS into non-toxic, mineralized products such as CO₂ and H₂O due to the strong C-F bonds and the potential toxicity of by-products in post-treated wastewater. Standardized and reliable bioassays for assessing PFAS toxicity are still under development, and current predictive models linking molecular structure to human health effects are at an early stage. This review examines the emerging health and ecological risks associated with both legacy and novel PFAS, alongside recent advances and limitations in individual and combined treatment technologies for water and wastewater. Emphasis is placed on the potential toxicity of degradation products, highlighting the need for more integrated and comprehensive toxicity assessments to guide safer PFAS remediation strategies.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1186/s40068-025-00411-9.</p>","PeriodicalId":101406,"journal":{"name":"Environmental systems research","volume":"14 1","pages":"18"},"PeriodicalIF":3.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12339656/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144850240","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}

{"title":"Understanding the spread of antibiotic resistance in vegetables cultivated with sewage sludge: implications for food safety and human health","authors":"Mrinmoy Patra, Suresh Kumar Dubey","doi":"10.1186/s40068-024-00347-6","DOIUrl":"https://doi.org/10.1186/s40068-024-00347-6","url":null,"abstract":"","PeriodicalId":101406,"journal":{"name":"Environmental systems research","volume":"92 6s1","pages":"1-24"},"PeriodicalIF":0.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141378293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disposal of spent oil into soils around auto parts markets impacts heavy metal concentrations and poses a potential ecological risk","authors":"C. B. Okebalama, Chioma Lucy Onwurah, C. Jidere, C. Okolo","doi":"10.1186/s40068-024-00343-w","DOIUrl":"https://doi.org/10.1186/s40068-024-00343-w","url":null,"abstract":"","PeriodicalId":101406,"journal":{"name":"Environmental systems research","volume":"32 7","pages":"1-12"},"PeriodicalIF":0.0,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140961947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Innovations and development of sustainable personal protective equipment: a path to a greener future.","authors":"Linxiang Lyu, Monisha Bagchi, Nektaria Markoglou, Chunjiang An","doi":"10.1186/s40068-024-00350-x","DOIUrl":"10.1186/s40068-024-00350-x","url":null,"abstract":"<p><p>The unprecedented surge in the demand for personal protective equipment (PPE) worldwide during the covid pandemic resulted in a significant increase in PPE consumption and subsequent waste generation. Despite the importance of PPE, its widespread usage and disposal have sparked worries about the environmental impact and its long-term sustainability. The increasing awareness of environmental challenges, resource scarcity, and the urgent need to mitigate climate change necessitates a paradigm shift in the product design, manufacturing process, and waste management of PPE. To address these challenges and have a sustainable PPE future, the development of degradable polymers and natural fibers offers a promising alternative to traditional plastics. Additionally, recycling and upcycling methods can convert the waste into valuable alternate products or energy sources, thereby reducing their environmental impact. Better waste management systems, comprehensive policy frameworks, and international collaborations are essential for the effective PPE waste management and the promotion of sustainable practices. Despite the challenges, collaborative efforts across governments, manufacturers, research institutions, and waste management authorities are crucial for transitioning to a more sustainable PPE industry and a circular economy, ultimately benefiting both the environment and society.</p>","PeriodicalId":101406,"journal":{"name":"Environmental systems research","volume":"13 1","pages":"22"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11189323/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141444020","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}