Science of the Total Environment最新文献_第10页

Climatic vulnerability and adaptation strategies for vegetable production in the Northern Himalayan region

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment

Pub Date : 2025-02-28 DOI: 10.1016/j.scitotenv.2024.178343

Pardeep Singh , Manoj Kumar Vaidya , Amit Guleria , Pradipkumar Adhale , Priya Brata Bhoi , Akash Kumar Bhoi , Paolo Barsocchi

Vegetable production in the low and mid hills is highly vulnerable to climatic vulnerability. The study evaluated the Agricultural Climatic Vulnerability Index (ACVI) for 51 blocks in the regions using the IPCC AR4 conceptual framework. The developmental blocks were categorized into three groups (Low, Moderate and Highly Vulnerable) to collect the primary data. A multistage stratified random sampling technique was employed, using a pre-tested questionnaire. The ACVI findings reveal that the Balh Valley is the most climate-vulnerable block, while Paonta Sahib is the least. Vulnerability is primarily driven by the temperature variations in the Kharif and Rabi seasons of exposure dimension. The farm income analysis shows a decline in crop feasibility from low to high-vulnerability groups. Maximum temperature significantly reduced net crop returns, except in the case of cauliflower. Rainfall negatively impacted the profitability of crops such as tomatoes, capsicum and peas. However, an increase in the minimum temperature significantly boosted vegetable crop profitability in vulnerable groups. A balanced use of fertilizer and pesticide application, crop diversification and increased irrigation coverage significantly mitigated climate change impacts across all vulnerability groups and improved crop profitability. Among the crops studied, tomato exhibited the highest carbon sequestration potential, followed by capsicum, pea, French beans and cauliflower. A significant variation was observed in the carbon sequestration level across vulnerability groups.

Farmers in these regions have adopted various adaptation strategies, including crop diversification (76.11%), nutrient management (71.11 %), varietal changes (65.56 %), and water conservation (65.56 %). To enhance resilience, the study emphasizes the importance of improved technical knowledge, capacity building, adoption of better agronomic practices, increased financial support, and comprehensive stakeholder consultation within the agricultural and allied sectors.

{"title":"Climatic vulnerability and adaptation strategies for vegetable production in the Northern Himalayan region","authors":"Pardeep Singh , Manoj Kumar Vaidya , Amit Guleria , Pradipkumar Adhale , Priya Brata Bhoi , Akash Kumar Bhoi , Paolo Barsocchi","doi":"10.1016/j.scitotenv.2024.178343","DOIUrl":"10.1016/j.scitotenv.2024.178343","url":null,"abstract":"<div><div>Vegetable production in the low and mid hills is highly vulnerable to climatic vulnerability. The study evaluated the Agricultural Climatic Vulnerability Index (ACVI) for 51 blocks in the regions using the IPCC AR4 conceptual framework. The developmental blocks were categorized into three groups (Low, Moderate and Highly Vulnerable) to collect the primary data. A multistage stratified random sampling technique was employed, using a pre-tested questionnaire. The ACVI findings reveal that the Balh Valley is the most climate-vulnerable block, while Paonta Sahib is the least. Vulnerability is primarily driven by the temperature variations in the Kharif and Rabi seasons of exposure dimension. The farm income analysis shows a decline in crop feasibility from low to high-vulnerability groups. Maximum temperature significantly reduced net crop returns, except in the case of cauliflower. Rainfall negatively impacted the profitability of crops such as tomatoes, capsicum and peas. However, an increase in the minimum temperature significantly boosted vegetable crop profitability in vulnerable groups. A balanced use of fertilizer and pesticide application, crop diversification and increased irrigation coverage significantly mitigated climate change impacts across all vulnerability groups and improved crop profitability. Among the crops studied, tomato exhibited the highest carbon sequestration potential, followed by capsicum, pea, French beans and cauliflower. A significant variation was observed in the carbon sequestration level across vulnerability groups.</div><div>Farmers in these regions have adopted various adaptation strategies, including crop diversification (76.11%), nutrient management (71.11 %), varietal changes (65.56 %), and water conservation (65.56 %). To enhance resilience, the study emphasizes the importance of improved technical knowledge, capacity building, adoption of better agronomic practices, increased financial support, and comprehensive stakeholder consultation within the agricultural and allied sectors.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"969 ","pages":"Article 178343"},"PeriodicalIF":8.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chronic intermittent hypoxia modulates energy metabolic pathways and improves hypoxia tolerance capacity in golden pompano, Trachinotus blochii

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment

Pub Date : 2025-02-28 DOI: 10.1016/j.scitotenv.2025.178921

Geng Hui Fang , Xiao Li Zhou , Chun Li Ran , Chun Xiu Jin , Shao Yang Bu , Yue Chen , Yong Gong , Zeng Tan Hu , Fei Biao Song , Jian Luo , Jun Long Sun

Hypoxia is one of the most significant abiotic stresses affecting organisms in aquatic environments. However, dissolved oxygen in water is not always at the low concentrations that cause hypoxia, but their levels often fluctuate. Here, golden pompano (Trachinotus blochii) was subjected to low oxygen concentrations for 28 days (intermittent hypoxia, 2 h per day), and their metabolic indexes were systematically evaluated. RNA-seq was used to construct a regulatory network to elucidate the transcriptional regulation of golden pompano metabolism under intermittent hypoxia. We found that the liver lactic acid content, as well as hexokinase and phosphofructokinase activities, were elevated during the first 7 days, suggesting that anaerobic glycolysis was enhanced during the preceding period. In addition, triglyceride, lipoprotein lipase, and carnitine palmitoyltransferase-1 levels were elevated in the liver after 14 days, suggesting that lipid utilization was activated after 14 days. Intermittent hypoxia increased the activity of aspartate aminotransferase and alanine aminotransferase in the liver, decreased total plasma protein and amino acid levels, and enhanced the metabolism of proteins and amino acids. Decreased levels of oxidative stress and LOEcrit (the O₂ tension for loss of equilibrium) were observed in golden pompano after 28 days of intermittent hypoxia. Transcriptome analysis showed that the fatty acid metabolism, PPAR signaling pathway, fatty acid degradation, D-amino acid metabolism, and cholesterol metabolism pathway were activated. These results suggest that intermittent hypoxia improves the metabolic activities of golden pompano, increases its hypoxia tolerance, and promotes its adaptation to hypoxic environments.

{"title":"Chronic intermittent hypoxia modulates energy metabolic pathways and improves hypoxia tolerance capacity in golden pompano, Trachinotus blochii","authors":"Geng Hui Fang , Xiao Li Zhou , Chun Li Ran , Chun Xiu Jin , Shao Yang Bu , Yue Chen , Yong Gong , Zeng Tan Hu , Fei Biao Song , Jian Luo , Jun Long Sun","doi":"10.1016/j.scitotenv.2025.178921","DOIUrl":"10.1016/j.scitotenv.2025.178921","url":null,"abstract":"<div><div>Hypoxia is one of the most significant abiotic stresses affecting organisms in aquatic environments. However, dissolved oxygen in water is not always at the low concentrations that cause hypoxia, but their levels often fluctuate. Here, golden pompano (<em>Trachinotus blochii</em>) was subjected to low oxygen concentrations for 28 days (intermittent hypoxia, 2 h per day), and their metabolic indexes were systematically evaluated. RNA-seq was used to construct a regulatory network to elucidate the transcriptional regulation of golden pompano metabolism under intermittent hypoxia. We found that the liver lactic acid content, as well as hexokinase and phosphofructokinase activities, were elevated during the first 7 days, suggesting that anaerobic glycolysis was enhanced during the preceding period. In addition, triglyceride, lipoprotein lipase, and carnitine palmitoyltransferase-1 levels were elevated in the liver after 14 days, suggesting that lipid utilization was activated after 14 days. Intermittent hypoxia increased the activity of aspartate aminotransferase and alanine aminotransferase in the liver, decreased total plasma protein and amino acid levels, and enhanced the metabolism of proteins and amino acids. Decreased levels of oxidative stress and LOEcrit (the O<sub>2</sub> tension for loss of equilibrium) were observed in golden pompano after 28 days of intermittent hypoxia. Transcriptome analysis showed that the fatty acid metabolism, PPAR signaling pathway, fatty acid degradation, D-amino acid metabolism, and cholesterol metabolism pathway were activated. These results suggest that intermittent hypoxia improves the metabolic activities of golden pompano, increases its hypoxia tolerance, and promotes its adaptation to hypoxic environments.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"969 ","pages":"Article 178921"},"PeriodicalIF":8.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512758","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

Pediatric lead exposure and risk of influenza and pneumonia in an underrepresented, urban sample

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment

Pub Date : 2025-02-28 DOI: 10.1016/j.scitotenv.2025.178963

Marina Oktapodas Feiler , Eva Odiko , Jing Nie , Recai Yucel , Heather K. Lehman , Erin R. Kulick , Nitzana Spiegel , Adil I. Khan , John Turella

The present objective was to estimate the association between childhood blood lead concentrations (BLC) and clinical diagnoses of influenza or pneumonia among a large, low-income, underrepresented cohort of children using a retrospective design. Medical records were pulled from the Temple University Hospital System (TUHS) located in inner-city Philadelphia, PA from 2010 to 2020. All children ≤14 years of age with an available lead value in their medical records were included in the analysis (N = 14,217). Lead exposure was measured via BLC as reported in the medical records through screening practices. Respiratory outcomes, influenza and pneumonia, were measured from ICD codes. Log-binomial regression models were fit to estimate the prevalence ratios and 95 % confidence intervals for the associations between BLC and influenza or pneumonia. Poisson regression models were fit to estimate the associations between BLC and counts of influenza or pneumonia recurrence. Additional models examined sexually dimorphic associations between BLC and outcomes. Compared to children with a BLC <1 μg/dL, children with a BLC of 1–3.4 μg/dL had 172 % higher risk (95 % CI: 1.74, 4.59), and children with a BLC ≥3.5 μg/dL had 101 % higher risk (95 % CI: 1.19, 3.39) of pneumonia diagnosis. No statistically significant findings were observed for influenza. Risk for pneumonia was higher among males compared to females, and risk for influenza was stronger among females. Observed findings indicate that underrepresented, impoverished children are at high-risk for these associations, indicating significant public health and clinical implications.

{"title":"Pediatric lead exposure and risk of influenza and pneumonia in an underrepresented, urban sample","authors":"Marina Oktapodas Feiler , Eva Odiko , Jing Nie , Recai Yucel , Heather K. Lehman , Erin R. Kulick , Nitzana Spiegel , Adil I. Khan , John Turella","doi":"10.1016/j.scitotenv.2025.178963","DOIUrl":"10.1016/j.scitotenv.2025.178963","url":null,"abstract":"<div><div>The present objective was to estimate the association between childhood blood lead concentrations (BLC) and clinical diagnoses of influenza or pneumonia among a large, low-income, underrepresented cohort of children using a retrospective design. Medical records were pulled from the Temple University Hospital System (TUHS) located in inner-city Philadelphia, PA from 2010 to 2020. All children ≤14 years of age with an available lead value in their medical records were included in the analysis (<em>N</em> = 14,217). Lead exposure was measured via BLC as reported in the medical records through screening practices. Respiratory outcomes, influenza and pneumonia, were measured from ICD codes. Log-binomial regression models were fit to estimate the prevalence ratios and 95 % confidence intervals for the associations between BLC and influenza or pneumonia. Poisson regression models were fit to estimate the associations between BLC and counts of influenza or pneumonia recurrence. Additional models examined sexually dimorphic associations between BLC and outcomes. Compared to children with a BLC <1 μg/dL, children with a BLC of 1–3.4 μg/dL had 172 % higher risk (95 % CI: 1.74, 4.59), and children with a BLC ≥3.5 μg/dL had 101 % higher risk (95 % CI: 1.19, 3.39) of pneumonia diagnosis. No statistically significant findings were observed for influenza. Risk for pneumonia was higher among males compared to females, and risk for influenza was stronger among females. Observed findings indicate that underrepresented, impoverished children are at high-risk for these associations, indicating significant public health and clinical implications.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"969 ","pages":"Article 178963"},"PeriodicalIF":8.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioplastics and biodegradable plastics: A review of recent advances, feasibility and cleaner production

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment

Pub Date : 2025-02-28 DOI: 10.1016/j.scitotenv.2025.178911

Shirui Huang , Qianhe Dong , Sichen Che , Ronghua Li , Kuok Ho Daniel Tang

As awareness of plastic pollution increases, there is a growing emphasis on sustainable alternatives. Bioplastics and biodegradable plastics have surfaced as potential substitutes. Yet, their limited properties and high production costs hinder their practicality. This paper systematically reviews more than 280 articles to comprehensively outline the advantages and drawbacks of emerging bioplastics and biodegradable plastics, alongside advancements in cleaner production methods. Bioplastics, sourced from renewable materials, decrease dependency on fossil fuels and help lower carbon footprints during production and disposal. Some bioplastics, such as polylactic acid (PLA) and polyhydroxyalkanoates, are compostable, but their manufacturing costs usually surpass that of conventional plastics. Additionally, certain bioplastics exhibit lower mechanical strength, heat resistance, or durability. PLA and bio-polybutylene succinate (bio-PBS) are viable for single-use items and biodegradable products, with scalable production using established technologies, although bio-PBS is somewhat pricier than PLA. Biodegradable plastics lessen environmental impact by naturally degrading and can be composted in industrial settings, providing an eco-friendly disposal option. However, they require specific industrial composting conditions for complete degradation, which can lead to microplastic formation in the environment. PBS, polybutylene adipate terephthalate, and polybutylene succinate-co-adipate seem to be the most promising options, with PBS being a strong contender for replacing traditional plastics due to its biodegradable and compostable nature. It has the potential to be partially or entirely bio-based (bio-PBS). Innovative technologies, especially next-generation industrial biotechnology and microbial cell factories, offer cleaner methods for synthesizing these plastics. This review aids in identifying feasible and sustainable alternatives to conventional plastics.

{"title":"Bioplastics and biodegradable plastics: A review of recent advances, feasibility and cleaner production","authors":"Shirui Huang , Qianhe Dong , Sichen Che , Ronghua Li , Kuok Ho Daniel Tang","doi":"10.1016/j.scitotenv.2025.178911","DOIUrl":"10.1016/j.scitotenv.2025.178911","url":null,"abstract":"<div><div>As awareness of plastic pollution increases, there is a growing emphasis on sustainable alternatives. Bioplastics and biodegradable plastics have surfaced as potential substitutes. Yet, their limited properties and high production costs hinder their practicality. This paper systematically reviews more than 280 articles to comprehensively outline the advantages and drawbacks of emerging bioplastics and biodegradable plastics, alongside advancements in cleaner production methods. Bioplastics, sourced from renewable materials, decrease dependency on fossil fuels and help lower carbon footprints during production and disposal. Some bioplastics, such as polylactic acid (PLA) and polyhydroxyalkanoates, are compostable, but their manufacturing costs usually surpass that of conventional plastics. Additionally, certain bioplastics exhibit lower mechanical strength, heat resistance, or durability. PLA and bio-polybutylene succinate (bio-PBS) are viable for single-use items and biodegradable products, with scalable production using established technologies, although bio-PBS is somewhat pricier than PLA. Biodegradable plastics lessen environmental impact by naturally degrading and can be composted in industrial settings, providing an eco-friendly disposal option. However, they require specific industrial composting conditions for complete degradation, which can lead to microplastic formation in the environment. PBS, polybutylene adipate terephthalate, and polybutylene succinate-co-adipate seem to be the most promising options, with PBS being a strong contender for replacing traditional plastics due to its biodegradable and compostable nature. It has the potential to be partially or entirely bio-based (bio-PBS). Innovative technologies, especially next-generation industrial biotechnology and microbial cell factories, offer cleaner methods for synthesizing these plastics. This review aids in identifying feasible and sustainable alternatives to conventional plastics.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"969 ","pages":"Article 178911"},"PeriodicalIF":8.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512591","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

Exploring the neurodegenerative potential of per- and polyfluoroalkyl substances through an adverse outcome pathway network

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment

Pub Date : 2025-02-28 DOI: 10.1016/j.scitotenv.2025.178972

Sayed Esmaeil Mousavi , Jimmy Yu , Hyeong-Moo Shin

While emerging evidence links per- and polyfluoroalkyl substances (PFAS) to neurotoxicity, their potential role in neurodegeneration remains poorly understood. Moreover, existing neurodegeneration-related adverse outcome pathways (AOPs) available on AOP-Wiki have not yet been integrated into a unified network. To address these gaps, this study aims to develop the first neurodegeneration-related AOP network and utilize it to explore the possible contributions of long-chain legacy PFAS to neurodegeneration, specifically concerning Alzheimer's and Parkinson's diseases. A total of 74 AOPs were screened from AOP-Wiki, of which 13 neurodegeneration-related AOPs met the eligibility criteria and were incorporated into a network. We analyzed the resulting AOP network using topological parameters such as in-degree, out-degree, eccentricity, and betweenness centrality. To elucidate the mechanistic contributions of PFAS exposure to neurodegenerative pathways, we integrated evidence linking PFAS exposure to key events (KEs) within the network. The results highlighted increased intracellular calcium as the network hub with the highest connectivity followed by critical KEs such as neurodegeneration, neuronal apoptosis, oxidative stress, N-methyl-d-aspartate receptor (NMDA-R) overactivation, and mitochondrial dysfunction. Consistent with toxicological evidence, the pathways highlighted by the AOP network indicate that PFAS may adversely affect neurotransmitter systems, particularly through NMDA-R overactivation, leading to excitotoxicity. This may result in calcium dyshomeostasis, mitochondrial dysfunction, inflammatory-oxidative cascades, neuroinflammation, and neuronal cell death. By providing a mechanistic basis for understanding the neurodegenerative potential of PFAS, this study offers a crucial framework for assessing the risks associated with these chemicals which may inform future regulatory measures and public health strategies. Further experimental validation is needed to confirm the mechanistic contributions of PFAS exposure in neurodegeneration, particularly in animal models or human populations.

{"title":"Exploring the neurodegenerative potential of per- and polyfluoroalkyl substances through an adverse outcome pathway network","authors":"Sayed Esmaeil Mousavi , Jimmy Yu , Hyeong-Moo Shin","doi":"10.1016/j.scitotenv.2025.178972","DOIUrl":"10.1016/j.scitotenv.2025.178972","url":null,"abstract":"<div><div>While emerging evidence links <em>per</em>- and polyfluoroalkyl substances (PFAS) to neurotoxicity, their potential role in neurodegeneration remains poorly understood. Moreover, existing neurodegeneration-related adverse outcome pathways (AOPs) available on AOP-Wiki have not yet been integrated into a unified network. To address these gaps, this study aims to develop the first neurodegeneration-related AOP network and utilize it to explore the possible contributions of long-chain legacy PFAS to neurodegeneration, specifically concerning Alzheimer's and Parkinson's diseases. A total of 74 AOPs were screened from AOP-Wiki, of which 13 neurodegeneration-related AOPs met the eligibility criteria and were incorporated into a network. We analyzed the resulting AOP network using topological parameters such as in-degree, out-degree, eccentricity, and betweenness centrality. To elucidate the mechanistic contributions of PFAS exposure to neurodegenerative pathways, we integrated evidence linking PFAS exposure to key events (KEs) within the network. The results highlighted increased intracellular calcium as the network hub with the highest connectivity followed by critical KEs such as neurodegeneration, neuronal apoptosis, oxidative stress, <em>N</em>-methyl-<span>d</span>-aspartate receptor (NMDA-R) overactivation, and mitochondrial dysfunction. Consistent with toxicological evidence, the pathways highlighted by the AOP network indicate that PFAS may adversely affect neurotransmitter systems, particularly through NMDA-R overactivation, leading to excitotoxicity. This may result in calcium dyshomeostasis, mitochondrial dysfunction, inflammatory-oxidative cascades, neuroinflammation, and neuronal cell death. By providing a mechanistic basis for understanding the neurodegenerative potential of PFAS, this study offers a crucial framework for assessing the risks associated with these chemicals which may inform future regulatory measures and public health strategies. Further experimental validation is needed to confirm the mechanistic contributions of PFAS exposure in neurodegeneration, particularly in animal models or human populations.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"969 ","pages":"Article 178972"},"PeriodicalIF":8.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Occurrence and fate of glyphosate and AMPA in wastewater treatment plants in Australia

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment

Pub Date : 2025-02-28 DOI: 10.1016/j.scitotenv.2025.178964

Garth Campbell , Ben J. Tscharke , Pritesh Prasad , Emma R. Knight , Tim Reeks , Aiko Jackson , Kevin V. Thomas , Jochen F. Mueller , Sarit L. Kaserzon

Glyphosate is the most used herbicide globally, but little is known of its prevalence in the Australian environment or its behaviour during wastewater treatment. This study examined the concentration of glyphosate and its primary biodegradation product, aminomethylphosphonic acid (AMPA), in influent and effluent from 22 Australian wastewater treatment plants (WWTPs) to inform exposure risks. Glyphosate was detected in all 22 WWTP influent samples, with concentrations ranging from 0.37 to 370 μg/L (mean: 22 ± 76 μg/L). In treated effluent, glyphosate was found in 82 % of samples with concentrations ranging from <LOQ (0.2 μg/L) to 11 μg/L (mean: 2.1 ± 3.1 μg/L). AMPA was detected in the influent of four of the 22 WWTP, with concentrations ranging from <LOQ to 32 μg/L (mean: 1.4 ± 5.2 μg/L). AMPA was detected in the effluent samples at eleven sites, with concentrations ranging from <LOQ to 19 μg/L. Glyphosate removal efficiency varied by treatment process. Plants with tertiary treatment (n = 10) removed on average 76 % of the glyphosate, while primary treatment sites (n = 4) removed the lowest (mean: −102 %; higher in the effluent). One tertiary treatment site had glyphosate concentrations 160 % higher in the treated effluent, suggesting additional sources post treatment. The mean population weighted mass load of glyphosate in treated effluent was 572 ± 856 mg per day per 1000 inhabitants, with an estimated 5000 kg/year of glyphosate reaching the Australian aquatic environment. A temporal study at two influent sites identified increasing glyphosate use over the past decade. Despite the widespread presence of glyphosate in effluent, all concentrations were all below the current Australian freshwater species protection guideline of 180 μg/L.

{"title":"Occurrence and fate of glyphosate and AMPA in wastewater treatment plants in Australia","authors":"Garth Campbell , Ben J. Tscharke , Pritesh Prasad , Emma R. Knight , Tim Reeks , Aiko Jackson , Kevin V. Thomas , Jochen F. Mueller , Sarit L. Kaserzon","doi":"10.1016/j.scitotenv.2025.178964","DOIUrl":"10.1016/j.scitotenv.2025.178964","url":null,"abstract":"<div><div>Glyphosate is the most used herbicide globally, but little is known of its prevalence in the Australian environment or its behaviour during wastewater treatment. This study examined the concentration of glyphosate and its primary biodegradation product, aminomethylphosphonic acid (AMPA), in influent and effluent from 22 Australian wastewater treatment plants (WWTPs) to inform exposure risks. Glyphosate was detected in all 22 WWTP influent samples, with concentrations ranging from 0.37 to 370 μg/L (mean: 22 ± 76 μg/L). In treated effluent, glyphosate was found in 82 % of samples with concentrations ranging from <LOQ (0.2 μg/L) to 11 μg/L (mean: 2.1 ± 3.1 μg/L). AMPA was detected in the influent of four of the 22 WWTP, with concentrations ranging from <LOQ to 32 μg/L (mean: 1.4 ± 5.2 μg/L). AMPA was detected in the effluent samples at eleven sites, with concentrations ranging from <LOQ to 19 μg/L. Glyphosate removal efficiency varied by treatment process. Plants with tertiary treatment (<em>n</em> = 10) removed on average 76 % of the glyphosate, while primary treatment sites (<em>n</em> = 4) removed the lowest (mean: −102 %; higher in the effluent). One tertiary treatment site had glyphosate concentrations 160 % higher in the treated effluent, suggesting additional sources post treatment. The mean population weighted mass load of glyphosate in treated effluent was 572 ± 856 mg per day per 1000 inhabitants, with an estimated 5000 kg/year of glyphosate reaching the Australian aquatic environment. A temporal study at two influent sites identified increasing glyphosate use over the past decade. Despite the widespread presence of glyphosate in effluent, all concentrations were all below the current Australian freshwater species protection guideline of 180 μg/L.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"969 ","pages":"Article 178964"},"PeriodicalIF":8.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Incorporating benchmark dose into sediment toxicity testing using zebrafish (Danio rerio)

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment

Pub Date : 2025-02-28 DOI: 10.1016/j.scitotenv.2025.178953

Sarah Nash, Colby Hietpas, Seenivasan Subbiah, Emmy Schniederjan, Jordan Crago

Mortality is the most common endpoint surveyed for environmental risk assessment of sediment contaminated with organic pollutants. More recently, a modified zebrafish embryo toxicity assay (zFET) has been utilized in sediment toxicity assessments as it provides data on both mortality and distinct malformations associated with the whole sediment and sediment extract containing only the organic pollutants. Taking this approach further, we herein have incorporated benchmark dose (BMD) calculations through EPA's BMD software based on zebrafish mortality and malformation data; thus, providing a framework to apply this methodology to sediment toxicity assessments. The goal of this study was to assess relative toxicity of sediment chemical extracts using a zfBMD approach based on mortality, malformation and behavior as compared to hazard index calculations from chemical analysis. To perform this study, sediment from the Lower Rio Grande Valley of Texas resacas ‘oxbow lakes’, were collected to assess utility of this approach in sediment toxicity assessments. Chemical analysis of 95 organic contaminants revealed the presence of 45 organic pollutants in sediment extracts from 13 locations and 5 resacas across four sampling events in a one-year period to determine seasonal variability. Our results indicated that the zfFET assay was correlated with seasonal applications of pyrethroids, neonicotinoids and organophosphates. Incorporating BMD for the three endpoints allowed for better representation of sub-acute toxicity as many of the sediment extracts induced malformations and behavior changes at concentrations below the chemical bioavailable concentration in the sediment. Results of this study will aid in the development of utilizing fish embryo-larvae BMD mortality and malformation calculations in ecological risk assessments of contaminated sediments.

{"title":"Incorporating benchmark dose into sediment toxicity testing using zebrafish (Danio rerio)","authors":"Sarah Nash, Colby Hietpas, Seenivasan Subbiah, Emmy Schniederjan, Jordan Crago","doi":"10.1016/j.scitotenv.2025.178953","DOIUrl":"10.1016/j.scitotenv.2025.178953","url":null,"abstract":"<div><div>Mortality is the most common endpoint surveyed for environmental risk assessment of sediment contaminated with organic pollutants. More recently, a modified zebrafish embryo toxicity assay (zFET) has been utilized in sediment toxicity assessments as it provides data on both mortality and distinct malformations associated with the whole sediment and sediment extract containing only the organic pollutants. Taking this approach further, we herein have incorporated benchmark dose (BMD) calculations through EPA's BMD software based on zebrafish mortality and malformation data; thus, providing a framework to apply this methodology to sediment toxicity assessments. The goal of this study was to assess relative toxicity of sediment chemical extracts using a zfBMD approach based on mortality, malformation and behavior as compared to hazard index calculations from chemical analysis. To perform this study, sediment from the Lower Rio Grande Valley of Texas resacas ‘oxbow lakes’, were collected to assess utility of this approach in sediment toxicity assessments. Chemical analysis of 95 organic contaminants revealed the presence of 45 organic pollutants in sediment extracts from 13 locations and 5 resacas across four sampling events in a one-year period to determine seasonal variability. Our results indicated that the zfFET assay was correlated with seasonal applications of pyrethroids, neonicotinoids and organophosphates. Incorporating BMD for the three endpoints allowed for better representation of sub-acute toxicity as many of the sediment extracts induced malformations and behavior changes at concentrations below the chemical bioavailable concentration in the sediment. Results of this study will aid in the development of utilizing fish embryo-larvae BMD mortality and malformation calculations in ecological risk assessments of contaminated sediments.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"969 ","pages":"Article 178953"},"PeriodicalIF":8.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512421","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

Impacts of non-ferrous metal mining on soil heavy metal pollution and risk assessment

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment

Pub Date : 2025-02-28 DOI: 10.1016/j.scitotenv.2025.178962

Shamsunnahar Setu, Vladimir Strezov

Mining activities significantly contribute to soil contamination, posing risks to the environment and human health. This study evaluates the environmental and health impacts of four non-ferrous mining types, which have been rarely examined globally. It highlights gaps in existing datasets from selected mining sites and sampling practices, correlating soil pollutants with atmospheric variables. Overall, the geoaccumulation index (Igeo) of all mine soil types were in the order Hg > Cd > As>Cu > Pb > Zn > Ni > Cr > Mn > Co indicating that Hg and Cd are the main metals posing risks from soil pollution associated with all mining activities. Notably, the highest As contamination (Igeo: class 6) occurs in copper mines in China, Russia, and Portugal, and in lead‑zinc mines in Sweden and Mexico. Cd contamination (Igeo: class 6) was most severe in lead‑zinc mine soils across Tunisia, China, Ireland, Spain, Slovenia, Mexico, France, North Macedonia, Bulgaria, and Egypt, while uranium mines in the USA showed notably lower levels of Cd contamination (Igeo: class 2). Hg contamination levels were higher in gold mine-associated soils in Iran, China, Myanmar, Brazil and Nigeria. About half of the sites faced the highest ecological risks from lead‑zinc mining areas in Vietnam, Tunisia, and Sweden, while copper mines in Cyprus, China, and Portugal had only 8 % in that category. Gold mines in China, Nigeria, and Brazil showed considerable risks from As and Hg, whereas uranium mines in Germany and Bulgaria had a lower ecological risk, due to better environmental management. The primary exposure route for heavy metals is ingestion, with the hazard index (HI) for non-carcinogenic impacts being acceptable for most elements, except for As. Carcinogenic risks are notably present in Brazil, Spain, Slovenia, Mexico, China, and the UK. Hence, this review underscores the urgent need to address heavy metal pollution from global metal mining and offers policy recommendations for effective environmental management and restoration efforts.

{"title":"Impacts of non-ferrous metal mining on soil heavy metal pollution and risk assessment","authors":"Shamsunnahar Setu, Vladimir Strezov","doi":"10.1016/j.scitotenv.2025.178962","DOIUrl":"10.1016/j.scitotenv.2025.178962","url":null,"abstract":"<div><div>Mining activities significantly contribute to soil contamination, posing risks to the environment and human health. This study evaluates the environmental and health impacts of four non-ferrous mining types, which have been rarely examined globally. It highlights gaps in existing datasets from selected mining sites and sampling practices, correlating soil pollutants with atmospheric variables. Overall, the geoaccumulation index (Igeo) of all mine soil types were in the order Hg > Cd > As>Cu > Pb > Zn > Ni > Cr > Mn > Co indicating that Hg and Cd are the main metals posing risks from soil pollution associated with all mining activities. Notably, the highest As contamination (Igeo: class 6) occurs in copper mines in China, Russia, and Portugal, and in lead‑zinc mines in Sweden and Mexico. Cd contamination (Igeo: class 6) was most severe in lead‑zinc mine soils across Tunisia, China, Ireland, Spain, Slovenia, Mexico, France, North Macedonia, Bulgaria, and Egypt, while uranium mines in the USA showed notably lower levels of Cd contamination (Igeo: class 2). Hg contamination levels were higher in gold mine-associated soils in Iran, China, Myanmar, Brazil and Nigeria. About half of the sites faced the highest ecological risks from lead‑zinc mining areas in Vietnam, Tunisia, and Sweden, while copper mines in Cyprus, China, and Portugal had only 8 % in that category. Gold mines in China, Nigeria, and Brazil showed considerable risks from As and Hg, whereas uranium mines in Germany and Bulgaria had a lower ecological risk, due to better environmental management. The primary exposure route for heavy metals is ingestion, with the hazard index (HI) for non-carcinogenic impacts being acceptable for most elements, except for As. Carcinogenic risks are notably present in Brazil, Spain, Slovenia, Mexico, China, and the UK. Hence, this review underscores the urgent need to address heavy metal pollution from global metal mining and offers policy recommendations for effective environmental management and restoration efforts.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"969 ","pages":"Article 178962"},"PeriodicalIF":8.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in membrane distillation for wastewater treatment: Innovations, challenges, and sustainable opportunities

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment

Pub Date : 2025-02-28 DOI: 10.1016/j.scitotenv.2025.178749

Raj Vardhan Patel , Anshul Yadav , Vinod Kumar Shahi

Water pollution and the growing demand for zero liquid discharge solutions have driven the development of advanced wastewater treatment technologies. Membrane distillation (MD) is a promising thermal-based process capable of treating high-salinity brines and wastewater. This review provides an in-depth analysis of MD configurations, operating principles, and membrane characteristics while addressing key challenges such as fouling and pore wetting which hinder large-scale implementation. To overcome these limitations, various membrane fabrication and modification strategies, including physical and chemical approaches, have been explored. The integration of MD with other processes (hybrid MD) for wastewater treatment is also examined. A comprehensive discussion on the mechanisms of organic, inorganic, and biological fouling and their impact on MD performance is presented. Additionally, recent advancements in antifouling strategies, including surface modifications, novel materials, and operational optimizations, are reviewed. Furthermore, the review critically analyzes membrane wetting, its governing mechanisms, and mitigation techniques. By summarizing the current challenges and future prospects, this work provides valuable insights into improving MD performance for practical applications. The findings serve as a foundation for further research and technological advancements in the field of wastewater treatment using MD.

{"title":"Advances in membrane distillation for wastewater treatment: Innovations, challenges, and sustainable opportunities","authors":"Raj Vardhan Patel , Anshul Yadav , Vinod Kumar Shahi","doi":"10.1016/j.scitotenv.2025.178749","DOIUrl":"10.1016/j.scitotenv.2025.178749","url":null,"abstract":"<div><div>Water pollution and the growing demand for zero liquid discharge solutions have driven the development of advanced wastewater treatment technologies. Membrane distillation (MD) is a promising thermal-based process capable of treating high-salinity brines and wastewater. This review provides an in-depth analysis of MD configurations, operating principles, and membrane characteristics while addressing key challenges such as fouling and pore wetting which hinder large-scale implementation. To overcome these limitations, various membrane fabrication and modification strategies, including physical and chemical approaches, have been explored. The integration of MD with other processes (hybrid MD) for wastewater treatment is also examined. A comprehensive discussion on the mechanisms of organic, inorganic, and biological fouling and their impact on MD performance is presented. Additionally, recent advancements in antifouling strategies, including surface modifications, novel materials, and operational optimizations, are reviewed. Furthermore, the review critically analyzes membrane wetting, its governing mechanisms, and mitigation techniques. By summarizing the current challenges and future prospects, this work provides valuable insights into improving MD performance for practical applications. The findings serve as a foundation for further research and technological advancements in the field of wastewater treatment using MD.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"969 ","pages":"Article 178749"},"PeriodicalIF":8.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512756","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

A critical review on applications of microreactors for the treatment of polluted water with organic dyes

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment

Pub Date : 2025-02-27 DOI: 10.1016/j.scitotenv.2025.178897

Barbora Kamenická

The scale-down of reaction processes by microreactors enables significant benefits over the applications of conventional reactors due to the intensification of reaction which become an emerging prospect in the environmental engineering. In the last decades, there has been a rapid pollution increase connected with various industries, in particular due to the dye and textile industries, which generate huge amounts of wastewater containing organic dyes. The abatement of dyes in wastewater using microreactors therefore has great potential. This paper reviews a rapidly emerging area of microreactors applications in the removal of dyes from polluted water and describes a survey on recent advances in the development of microreactors in this area. With respect to the nature of the treatment technique, the scope of the literature was divided into several categories - Fenton reaction, ozonation, photocatalytic degradation, reductive degradation, biotreatment, and separative sequestration. This review focusses on summarizing different configurations of reaction conditions of the respective treatment techniques, their efficiency, and, mainly, the characteristics including design, construction materials, and fabrication of microreactors applied. The evaluation and evolution of treatment techniques have also been critically analyzed, and future perspectives are proposed in this work. From the present study, it can be concluded that several treatment methods can be applied for removal of organic dyes in a wide range of microreactor designs. Furthermore, this work showcases how microreactor technology may improve mass transfer as well as treatment efficiency. A novelty of the this review article lies in (i) data analysis with emphasis on reaction conditions as well as microreactor designs, and, based on this, in (ii) the proposition of decision-making algorithm which can facilitate a designing of the dyes removal in microreactors.

{"title":"A critical review on applications of microreactors for the treatment of polluted water with organic dyes","authors":"Barbora Kamenická","doi":"10.1016/j.scitotenv.2025.178897","DOIUrl":"10.1016/j.scitotenv.2025.178897","url":null,"abstract":"<div><div>The scale-down of reaction processes by microreactors enables significant benefits over the applications of conventional reactors due to the intensification of reaction which become an emerging prospect in the environmental engineering. In the last decades, there has been a rapid pollution increase connected with various industries, in particular due to the dye and textile industries, which generate huge amounts of wastewater containing organic dyes. The abatement of dyes in wastewater using microreactors therefore has great potential. This paper reviews a rapidly emerging area of microreactors applications in the removal of dyes from polluted water and describes a survey on recent advances in the development of microreactors in this area. With respect to the nature of the treatment technique, the scope of the literature was divided into several categories - Fenton reaction, ozonation, photocatalytic degradation, reductive degradation, biotreatment, and separative sequestration. This review focusses on summarizing different configurations of reaction conditions of the respective treatment techniques, their efficiency, and, mainly, the characteristics including design, construction materials, and fabrication of microreactors applied. The evaluation and evolution of treatment techniques have also been critically analyzed, and future perspectives are proposed in this work. From the present study, it can be concluded that several treatment methods can be applied for removal of organic dyes in a wide range of microreactor designs. Furthermore, this work showcases how microreactor technology may improve mass transfer as well as treatment efficiency. A novelty of the this review article lies in (i) data analysis with emphasis on reaction conditions as well as microreactor designs, and, based on this, in (ii) the proposition of decision-making algorithm which can facilitate a designing of the dyes removal in microreactors.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"969 ","pages":"Article 178897"},"PeriodicalIF":8.2,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510508","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