环境科学与生态学最新文献

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Circular Economy in India: A Bayesian belief network analysis of household purchasing and disposal behaviour of plastics
IF 11.2 1区 环境科学与生态学
Resources Conservation and Recycling Pub Date : 2025-04-27 DOI: 10.1016/j.resconrec.2025.108327
Sorada Tapsuwan , Magnus Moglia , Murni Po , Andrea Walton , John Gardner , Zeenat Niazi , Aakriti Uttam , Heinz Schandl
{"title":"Circular Economy in India: A Bayesian belief network analysis of household purchasing and disposal behaviour of plastics","authors":"Sorada Tapsuwan ,&nbsp;Magnus Moglia ,&nbsp;Murni Po ,&nbsp;Andrea Walton ,&nbsp;John Gardner ,&nbsp;Zeenat Niazi ,&nbsp;Aakriti Uttam ,&nbsp;Heinz Schandl","doi":"10.1016/j.resconrec.2025.108327","DOIUrl":"10.1016/j.resconrec.2025.108327","url":null,"abstract":"<div><div>In India, nearly 5 Mt of plastic waste is thrown out every year, averaging around 11 kg per person. Adopting circular economy could help India reduce its plastic waste problems. This study focuses on understanding the factors that affect people’s plastic purchasing and disposal behaviour. We applied Social Practice Theory to help understand people’s plastic waste management behaviour and the factors that affect what people do. Our findings suggest that the type of <em>Material</em> suitable for reducing plastic waste include infrastructure and services that deal with plastic waste segregation at the source, and tokens or money refund for waste returned to aggregators. Improving household <em>Competence</em> should rely on increasing knowledge around how to segregate, recycle, and return waste. For <em>Meaning,</em> messages need to aim at demonstrating social and environmental benefits of plastic waste reduction, and the positive aspects of waste segregation to remove this social stigma attached to waste handling.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"220 ","pages":"Article 108327"},"PeriodicalIF":11.2,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877582","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}
引用次数: 0
Influence of alternate wetting and drying and duckweed on zooplankton abundance in rice paddy ecosystem
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2025-04-27 DOI: 10.1016/j.jenvman.2025.125433
Zeeshan Ahmed , Weixuan Liu , Junzeng Xu , Yawei Li , Zahid Majeed
{"title":"Influence of alternate wetting and drying and duckweed on zooplankton abundance in rice paddy ecosystem","authors":"Zeeshan Ahmed ,&nbsp;Weixuan Liu ,&nbsp;Junzeng Xu ,&nbsp;Yawei Li ,&nbsp;Zahid Majeed","doi":"10.1016/j.jenvman.2025.125433","DOIUrl":"10.1016/j.jenvman.2025.125433","url":null,"abstract":"<div><div>The escalating global demand for rice has transformed the traditional rice cultivation systems to alternate wetting and drying (AWD) irrigation as control irrigation (CI), particularly in dwindling water resources. Recently, the rice-duckweed system has shown positive outcomes in paddy habitats, but there is a gap in the literature regarding duckweed's impact on zooplankton with alternate AWD dry-wet cycles. Therefore, a field experiment was conducted to quantify the impact of flooding irrigation (FI) and control irrigation (AWD) with (FI + D, CI + D) and without (FI, CI) duckweed mats on zooplankton abundance at the early tillering (ET) and flowering (FL) stages, making a sequence before and after midseason drainage (MD) and successive AWD dry-rewet cycles, respectively. For both the ET and FL stages, CI + D significantly dominated other treatments in taxonomic richness and individuals/L. Post MD, a significant reduction in taxonomic richness was observed under FI compared to FI + D. At FL, the zooplankton individual/L were significantly reduced in the FI habitat, but there was no significant difference between FI + D and CI + D. FI resulted in low diversity after MD, indicating a disrupted habitat for zooplankton. PCA analysis showed that dissolved oxygen (mg/L) and pH at ET, and temperature (°C) at FL remained significant influential factors to governed zooplankton habitat. AWD dry-wet cycles control the outgrowth of duckweed and enrich the zooplankton habitat with decomposing duckweed. Our analysis showed that CI + D is a diversity-promoting and sustainable rice cultivation method, with further suggestions for long-term studies at the species level under the rice-duckweed system.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"383 ","pages":"Article 125433"},"PeriodicalIF":8.0,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876774","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}
引用次数: 0
Multi-objective optimization and Techno-economic analyses of conventional combustion and chemical looping combustion for a Municipal solid waste incineration plant in China
IF 7.1 2区 环境科学与生态学
Waste management Pub Date : 2025-04-27 DOI: 10.1016/j.wasman.2025.114834
Huimin Liu , Zhehao Jin , Ruijuan Mei , Min Li
{"title":"Multi-objective optimization and Techno-economic analyses of conventional combustion and chemical looping combustion for a Municipal solid waste incineration plant in China","authors":"Huimin Liu ,&nbsp;Zhehao Jin ,&nbsp;Ruijuan Mei ,&nbsp;Min Li","doi":"10.1016/j.wasman.2025.114834","DOIUrl":"10.1016/j.wasman.2025.114834","url":null,"abstract":"<div><div>Municipal solid waste (MSW) incineration for power generation is an alternative to landfill treatment, adhering to WtE principles and circular economy. It generates significant pollutants. For instance, in conventional combustion (CC), the flue gas contains approximately 21.34 % carbon dioxide (CO<sub>2</sub>), contributing to environmental pollution. With the push for carbon neutrality in China, CO<sub>2</sub> emissions play a vital role in electricity price determination. This study compares two MSW incineration methods: CC and chemical looping combustion (CLC) for CO<sub>2</sub> capture. Using the Non-dominated Sorting Genetic Algorithms (NSGA-II), multi-objective optimization is carried out with total capital investment (TCI) and exergy efficiency (EE) as objectives. Comprehensive economic, financial, carbon footprint, and exergy analyses are also conducted. The results show that CLC MSW incineration has a 23.41 % higher TCI than CC MSW incineration. However, it shortens the payback period by 5.91 years and captures 1,073,200 tonnes of CO<sub>2</sub> annually. The exergy efficiency of CC MSW incineration is 23.64 %, while that of CLC MSW incineration is 14.36 %. The power generation rate of CC MSW incineration reaches 44,094 kW, compared to 29,562 kW for CLC MSW incineration. These results offer valuable references for local governments and investors when choosing the optimal construction method for MSW incineration facilities.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"202 ","pages":"Article 114834"},"PeriodicalIF":7.1,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876865","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}
引用次数: 0
Activated carbon-based hot water-assisted backwashing system for active disinfection of Chironomus riparius larvae
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2025-04-27 DOI: 10.1016/j.scitotenv.2025.179475
Rajendra Singh , Chae-seung Lim , Sung Soo Park , Hayoung Kim , Woo Hyoung Lee , Sanghwa Park , Keugtae Kim
{"title":"Activated carbon-based hot water-assisted backwashing system for active disinfection of Chironomus riparius larvae","authors":"Rajendra Singh ,&nbsp;Chae-seung Lim ,&nbsp;Sung Soo Park ,&nbsp;Hayoung Kim ,&nbsp;Woo Hyoung Lee ,&nbsp;Sanghwa Park ,&nbsp;Keugtae Kim","doi":"10.1016/j.scitotenv.2025.179475","DOIUrl":"10.1016/j.scitotenv.2025.179475","url":null,"abstract":"<div><div>The presence of midge larvae in tap water is a critical issue for the environmental health of water sources, as well as for water quality and safety. Although methods such as ozone treatment, coagulation and chemical applications have been attempted as primary removal methods, they have not yet succeeded in completely eradicating larvae. This study identified the use of hot water for filter backwashing as an effective method for fully eliminating larvae in water treatment facilities. Despite its apparent simplicity, this approach has not been previously explored for larval disinfection. We developed a bench-scale system that utilizes activated carbon and hot water-assisted backwashing. Our research shows that filter backwashing can achieve total disinfection of <em>Chironomus riparius</em> larvae at 45 °C in just 3 min. Furthermore, a cost assessment was conducted to determine the cost efficiency of the designed system for implementation in water treatment facilities. An economic evaluation based on the Bucheon Water Treatment Plant (with a daily flow capacity of 600,000 m<sup>3</sup>) revealed an additional cost of $3.65 per 1000 m<sup>3</sup> of water to ensure effective larval control. This study provides an efficient and environmentally sustainable solution for removing midge larvae from water treatment facilities.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"979 ","pages":"Article 179475"},"PeriodicalIF":8.2,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877523","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}
引用次数: 0
ExpoPath: A method for identifying and annotating exposure pathways from chemical co-occurrence networks
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2025-04-27 DOI: 10.1016/j.scitotenv.2025.179465
Michael A. Zurek-Ost , Katherine A. Phillips , Antony J. Williams , Adam Edelman-Muñoz , Nathaniel Charest , Sakshi Handa , Kristin K. Isaacs
{"title":"ExpoPath: A method for identifying and annotating exposure pathways from chemical co-occurrence networks","authors":"Michael A. Zurek-Ost ,&nbsp;Katherine A. Phillips ,&nbsp;Antony J. Williams ,&nbsp;Adam Edelman-Muñoz ,&nbsp;Nathaniel Charest ,&nbsp;Sakshi Handa ,&nbsp;Kristin K. Isaacs","doi":"10.1016/j.scitotenv.2025.179465","DOIUrl":"10.1016/j.scitotenv.2025.179465","url":null,"abstract":"<div><div>Improving risk evaluation for environmental and human health is of paramount concern for the U.S. Environmental Protection Agency (EPA). This includes the identification and assessment of chemical transport from commercial and industrial sources to environmental and ecological media, where repeated patterns are often categorized as exposure pathways. Utilizing network analysis techniques paired with graph machine learning tools allows for the construction and analysis of a global chemical co-occurrence network with which to identify sets of overlapping or distinct communities that represent likely exposure pathways. Data from several chemical source databases were aggregated and used to generate a chemical co-occurrence network that encoded linkages between source categories and environmental and receptor categories within the EPA's Multimedia Monitoring Database (MMDB). Multiple algorithms were used to detect communities of chemicals within this network, while enrichment of the resulting communities based on presence-in-media information, physicochemical properties, and functional use information helped to annotate likely exposure pathways. This research identified communities of chemicals associated with various pharmaceutical, consumer, pesticide, and persistent chemical pathways. This novel approach to the study of chemical co-occurrence demonstrates the applicability of network analyses and graph machine learning methods for identifying empirical patterns of connectivity within the domain of exposure science.</div></div><div><h3>Synopsis</h3><div>Network analysis and community detection algorithms help reveal linkages among environmental monitoring data and chemical sources while providing supporting evidence for empirically derived exposure pathways.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"979 ","pages":"Article 179465"},"PeriodicalIF":8.2,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877556","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}
引用次数: 0
Quantitative approach for assessing risks and benefits to the supply of ecosystem services in response to human activities
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2025-04-27 DOI: 10.1016/j.scitotenv.2025.179504
Dries Lorré , Sara Vandamme , Ulrike Braeckman , Colin R. Janssen , Jana Asselman
{"title":"Quantitative approach for assessing risks and benefits to the supply of ecosystem services in response to human activities","authors":"Dries Lorré ,&nbsp;Sara Vandamme ,&nbsp;Ulrike Braeckman ,&nbsp;Colin R. Janssen ,&nbsp;Jana Asselman","doi":"10.1016/j.scitotenv.2025.179504","DOIUrl":"10.1016/j.scitotenv.2025.179504","url":null,"abstract":"<div><div>Escalating human activities threaten ecosystems and the benefits they provide, known as ecosystem services (ES). Despite the recognized importance of ES for both ecological health and human well-being, integrated methods for evaluating ES within decision-making frameworks remain limited. Current environmental assessments, such as ecological risk assessment (ERA), typically focus on risks to specific endpoints such as survival, growth and reproduction of test species without capturing broader ecosystem risks and benefits. This study introduces a novel method designed to quantitatively assess risks and benefits to ES supply by integrating ES as assessment endpoints within ERA. Using cumulative distribution functions, we establish risk and benefit thresholds and calculate the probability and magnitude of exceeding these following human interventions. The method was tested by quantifying risk and benefit metrics for a regulating ES, waste remediation, in three marine offshore case studies: an existing offshore wind farm, a hypothetical mussel longline culture, and a multi-use scenario combining both. The results enabled detailed comparisons of the probability and magnitude of creating risks and providing benefits across scenarios, demonstrating the utility of cumulative distribution functions for both visualizing and quantifying risks and benefits to ES supply. This generic and broadly applicable method can evaluate ES trade-offs regardless of the ecosystem under study, providing a valuable tool to operationalize the integration of ES into decision-making and environmental management frameworks.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"979 ","pages":"Article 179504"},"PeriodicalIF":8.2,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877608","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}
引用次数: 0
Monitoring marine pollution effects through targeted environmental DNA (eDNA) testing in the Pacific northwest
IF 5.3 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-04-27 DOI: 10.1016/j.marpolbul.2025.118036
Neha Acharya-Patel , Karen Cram , Emma T. Groenwold , Hajeong Lee , Abigail G. Keller , Breanna Bomback , Shirley Lyons , Rene L. Warren , Lauren Coombe , Christopher J. Lowe , Lauren C. Bergman , Farida Bishay , Inanc Birol , Tara A. Macdonald , Caren C. Helbing
{"title":"Monitoring marine pollution effects through targeted environmental DNA (eDNA) testing in the Pacific northwest","authors":"Neha Acharya-Patel ,&nbsp;Karen Cram ,&nbsp;Emma T. Groenwold ,&nbsp;Hajeong Lee ,&nbsp;Abigail G. Keller ,&nbsp;Breanna Bomback ,&nbsp;Shirley Lyons ,&nbsp;Rene L. Warren ,&nbsp;Lauren Coombe ,&nbsp;Christopher J. Lowe ,&nbsp;Lauren C. Bergman ,&nbsp;Farida Bishay ,&nbsp;Inanc Birol ,&nbsp;Tara A. Macdonald ,&nbsp;Caren C. Helbing","doi":"10.1016/j.marpolbul.2025.118036","DOIUrl":"10.1016/j.marpolbul.2025.118036","url":null,"abstract":"<div><div>Globally, coastal waters experience degradation from pollution associated with multiple discharges, including industrial and agricultural runoff, and municipal wastewater. Certain benthic infaunal taxa are tolerant of high nutrient input and anoxic conditions, while others are sensitive to these conditions. Using these indicator taxa as proxies for assessing organic enrichment is well established to characterize subsequent pollution impacts. Conventional assessment of macroinfauna involves the detailed analysis of each individual specimen within a sample by taxonomic experts, a resource intensive process. As an alternative, we developed sensitive quantitative polymerase chain reaction (qPCR) assays to detect these indicator taxa in a scalable and reliable way. Using whole genome shotgun sequencing, we generated full mitogenome sequences of selected indicator macroinfaunal polychaetes routinely used for monitoring programs in Pacific Northwest marine environments. These sequences were used to design five new, rigorously validated environmental DNA (eDNA) assays capable of detecting low levels of DNA that can be isolated from environmental samples. For nine sites at a wastewater treatment plant outfall in Vancouver, British Columbia, we tested three eDNA sample collection types: active filtration, a passive dip filter from water containing collected macroinfauna, and active filtration from water collected near the sea floor. Generalized linear models indicated that eDNA signal strength correlated with organism count particularly with passive dip sample collection type. eDNA occupancy modelling techniques estimated detection probabilities corresponding with organism count. The present study emphasizes the value of integrating eDNA into marine outfall monitoring efforts to enhance the assessment of environmental effects.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"216 ","pages":"Article 118036"},"PeriodicalIF":5.3,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
引用次数: 0
Remediation of sulfonamide antibiotic-containing wastewater by constructed wetlands: Importance and action mechanism of plants
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2025-04-27 DOI: 10.1016/j.jenvman.2025.125520
Tong Zhou , Changzhou Yan , Ling Zhang , Guohui Zhang , Hongda Fang
{"title":"Remediation of sulfonamide antibiotic-containing wastewater by constructed wetlands: Importance and action mechanism of plants","authors":"Tong Zhou ,&nbsp;Changzhou Yan ,&nbsp;Ling Zhang ,&nbsp;Guohui Zhang ,&nbsp;Hongda Fang","doi":"10.1016/j.jenvman.2025.125520","DOIUrl":"10.1016/j.jenvman.2025.125520","url":null,"abstract":"<div><div>Constructed wetlands (CWs) have been proved to be effective in treating sulfonamide antibiotics (SAs) wastewater. Nevertheless, as an essential element in CWs, the significance of plants, continues to be a topic of controversy. In this study, CWs with two different plant species were taken as the research object to investigate their treatment performance, in order to understand the impact of plants on the treatment of SAs wastewater in CWs and to discover the underlying action mechanisms. Experiment results showed that plants played an important role in the CWs, and significantly improved the efficiency of wastewater treatment, with average removal rates for conventional nutrients (COD, NH<sub>4</sub><sup>+</sup>-N, NO<sub>3</sub><sup>−</sup>-N and TP) ranging from 73.69 % to 98.92 %, surpassing the non-plant control group (52.16 %–80.70 %). Similarly, for SAs, the removal efficiency in the plant-treated group was 74.15 %–83.67 %, higher than that in the non-plant control group (65.42 %–70.14 %). Although, as time passed, the efficacy of CWs had slightly decreased, but the rate of pollutant removal remained consistently over 60 %. Further analysis showed that plants promoted the removal of SAs through various mechanisms such as plant uptake, microbial degradation and substrate adsorption. Plants had the ability to absorb SAs from wastewater and eliminated them through metabolism or accumulation. Additionally, plants can improve soil enzyme activity to facilitate microbial degradation, indirectly promoting SAs removal. It's worth noting that most SAs can be degraded through plant metabolism after being absorbed by plants, while only a minority of SAs accumulated in plants in the form of parent compounds. Furthermore, the efficacy of CWs in treating wastewater differed between selected plant species. Specifically, <em>Iris pseudacorus</em> showed a higher purifing potential than <em>Scirpus validus</em>. These results revealed the effect of plants on the treatment of SAs wastewater in CWs, and provided a reference for the practical application of antibiotic wastewater removal by CWs.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"383 ","pages":"Article 125520"},"PeriodicalIF":8.0,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876936","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}
引用次数: 0
Investigation of phloem transport of foliar-absorbed Cd in wheat
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2025-04-27 DOI: 10.1016/j.scitotenv.2025.179496
Liping Li , Liping Wang , James A. Ippolito , Weiqin Xing , Li Ma , Kunyan Qiu , Junxiao Jiang
{"title":"Investigation of phloem transport of foliar-absorbed Cd in wheat","authors":"Liping Li ,&nbsp;Liping Wang ,&nbsp;James A. Ippolito ,&nbsp;Weiqin Xing ,&nbsp;Li Ma ,&nbsp;Kunyan Qiu ,&nbsp;Junxiao Jiang","doi":"10.1016/j.scitotenv.2025.179496","DOIUrl":"10.1016/j.scitotenv.2025.179496","url":null,"abstract":"<div><div>The transport pathway of foliar absorbed Cd in wheat has not been clarified. Hydroponically raised wheat seedling stems were steam girdled to disrupt phloem transport, then the leaves were exposed to Cd solutions (40 or 60 mg L<sup>−1</sup>) containing 20 mg L<sup>−1</sup> Rb (a phloem transport indicator) for 16 h. Plants were harvested 7 days later and divided into roots and leaves, while the stem was divided into two parts above and below the girdling location, with phloem sap collected from the upper part. Samples were analyzed for Cd, Rb, Cu, Zn and Mn concentrations; root glutathione concentration was also analyzed to investigate Cd transport and its effect on other metals. Girdling increased leaf Cd concentrations by &gt;2 folds, reduced root Cd and Rb concentrations by ∼50 %, reduced root glutathione concentration by 21.4 %, and phloem sap Rb concentrations of the girdled plants were 30.8–63.1 % greater than the ungirdled treatments. Root to leaf Cd concentration ratios were in the range of 0.064–0.443, and girdled treatments had lower values than the ungirdled treatments. Negative correlations were found between root Cd and leaf Mn and Cu concentrations in the ungirdled treatments, but not in the girdled treatments. These results indicate that phloem transport plays an important role in the transport of leaf-absorbed Cd in wheat, with leaf absorbed Cd having high mobility. These findings are important for discerning Cd uptake and transport in plants found living in Cd-contaminated conditions.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"979 ","pages":"Article 179496"},"PeriodicalIF":8.2,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877520","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}
引用次数: 0
Application of heterogeneous Fenton-like reaction with modified zeolite for removal of antibiotics, antibiotic-resistant bacteria, and antibiotic-resistant genes from swine farm wastewater
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2025-04-27 DOI: 10.1016/j.jenvman.2025.125486
Athitaya Changduang , Parinda Thayanukul , Patiparn Punyapalakul , Tawan Limpiyakorn
{"title":"Application of heterogeneous Fenton-like reaction with modified zeolite for removal of antibiotics, antibiotic-resistant bacteria, and antibiotic-resistant genes from swine farm wastewater","authors":"Athitaya Changduang ,&nbsp;Parinda Thayanukul ,&nbsp;Patiparn Punyapalakul ,&nbsp;Tawan Limpiyakorn","doi":"10.1016/j.jenvman.2025.125486","DOIUrl":"10.1016/j.jenvman.2025.125486","url":null,"abstract":"<div><div>The heterogeneous Fenton-like reaction with modified zeolite was introduced for the removal of antibiotics, antibiotic-resistant bacteria (ARB), and antibiotic-resistant genes (ARGs) to reduce environmental impact of the substance residues in swine farm effluent. The heterogeneous Fenton-like reaction with 100 g/L of the modified zeolite and 2 mM H<sub>2</sub>O<sub>2</sub> could completely remove amoxicillin (AMX), tetracycline (TC), and tiamulin (TIA) in the swine farm effluent within 30 min. However, the antibiotic removal in the swine farm effluent was slower than in the ultrapure water. The heterogeneous Fenton-like reaction removed approximately 45–60% of dissolved organic carbon (DOC) and reduced the dissolved organic matter (DOM) sizes in the swine farm effluent. The large molecular size humic-like DOM co-existing in the swine farm effluent could probably decelerate the antibiotic removal via competitive adsorption and oxidation. To inactivate high-tolerant AMX-resistant <em>E. coli</em>, the heterogeneous Fenton-like reaction required 3-fold less exposure time than the H<sub>2</sub>O<sub>2</sub> oxidation. No regrowth of the high-tolerant AMX-resistant <em>E. coli</em> was observed when the exposure time of the heterogeneous Fenton-like reaction was longer than 6 h. The heterogeneous Fenton-like reaction required the exposure time of 24 h to reduce the <em>bla</em>TEM genes, the AMX-resistant genes, of the high-tolerant AMX-resistant <em>E. coli</em> to the level of lower than the limit of detection. The results suggest that different reaction times are required for the removal of antibiotics (within 30 min), ARB (over 6 h), and ARGs (within 24 h). Furthermore, the heterogeneous Fenton-like reaction with the modified zeolite is a promising technology for sequential and efficient removal of antibiotics, ARB, and ARGs residues in swine farm effluent before being discharged into the environment.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"384 ","pages":"Article 125486"},"PeriodicalIF":8.0,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877503","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}
引用次数: 0
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