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Biodegradable plastics from marine biomass: A solution to marine plastic pollution
IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-02-01 DOI: 10.1016/j.hazadv.2024.100559
Nida Khan , K. Sudhakar , R. Mamat
The growing demand for plastics has raised environmental concerns due to their non-biodegradable nature. Sustainable solutions are urgently required to decrease plastic pollution. This study explored the potential of Sargassum wightii, a seaweed found in Malaysia, as a sustainable material for bioplastic films. The seaweed-based bioplastic was produced using an extraction-based method where alginate was formed using NaOH, followed by mixing sodium alginate with isopropanol and potato starch. The bioplastic was then characterized using various analytical techniques, including Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), and Fourier-Transform Infrared (FTIR) spectroscopy. Physical properties such as density and moisture content, along with environmental tests like water absorption and biodegradability, were evaluated. TGA analysis indicated that 31.12 % of the sample remained as residue. FTIR spectroscopy identified the presence of bioactive compounds, with a prominent alcohol group peak at 3358cm-1. XRD analysis revealed a peak at 23.1°, indicating crystallinity within the sample. The moisture content of the bioplastic film was found to be 21.16 %. The water absorption test demonstrated the film's hydrophilic nature, showing a 60 % increase in weight. A soil burial test for biodegradability confirmed a 40 % reduction in weight over 21 days, indicating a reasonable degradation rate. These findings suggest that seaweed holds promise as an alternative raw material for bioplastic production, contributing to more sustainable materials and reducing reliance on non-biodegradable plastics.
{"title":"Biodegradable plastics from marine biomass: A solution to marine plastic pollution","authors":"Nida Khan ,&nbsp;K. Sudhakar ,&nbsp;R. Mamat","doi":"10.1016/j.hazadv.2024.100559","DOIUrl":"10.1016/j.hazadv.2024.100559","url":null,"abstract":"<div><div>The growing demand for plastics has raised environmental concerns due to their non-biodegradable nature. Sustainable solutions are urgently required to decrease plastic pollution. This study explored the potential of <em>Sargassum wightii</em>, a seaweed found in Malaysia, as a sustainable material for bioplastic films. The seaweed-based bioplastic was produced using an extraction-based method where alginate was formed using NaOH, followed by mixing sodium alginate with isopropanol and potato starch. The bioplastic was then characterized using various analytical techniques, including Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), and Fourier-Transform Infrared (FTIR) spectroscopy. Physical properties such as density and moisture content, along with environmental tests like water absorption and biodegradability, were evaluated. TGA analysis indicated that 31.12 % of the sample remained as residue. FTIR spectroscopy identified the presence of bioactive compounds, with a prominent alcohol group peak at 3358cm<sup>-1</sup>. XRD analysis revealed a peak at 23.1°, indicating crystallinity within the sample. The moisture content of the bioplastic film was found to be 21.16 %. The water absorption test demonstrated the film's hydrophilic nature, showing a 60 % increase in weight. A soil burial test for biodegradability confirmed a 40 % reduction in weight over 21 days, indicating a reasonable degradation rate. These findings suggest that seaweed holds promise as an alternative raw material for bioplastic production, contributing to more sustainable materials and reducing reliance on non-biodegradable plastics.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100559"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Manure and iron oxide show potential for reducing uptake of arsenic and mercury in lettuce grown in a contaminated mining site
IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-02-01 DOI: 10.1016/j.hazadv.2024.100545
Albert Kobina Mensah , Ephraim Sekyi-Annan , Prince Addai , Ophelia Osei Ulzen , Musah Salifu , Sadick Adams
The poor soil quality and high concentrations of potentially toxic elements (PTEs) found in gold mine tailings make them inappropriate for crop production. Assessing the viability of mine tailings for crop production after mining is essential because of the harmful impacts of these PTEs on food safety and human health. A 44-day pot experiment was conducted to test the effectiveness of different soil amendments in reducing the levels of PTEs at a decommissioned mining site in south-western Ghana. Compost, iron oxides, and poultry manure were applied individually or in combination to the mine soil in the pots. Lettuce (Lactuca sativa L.) was subsequently planted in the pots. Upon reaching maturity, the lettuce was harvested, and an analysis of the nutrients and PTE contents in both the soil and plants was done. The uptake of PTE by lettuce was evaluated, and the transfer coefficients of the PTEs were determined. The addition of manure and iron oxide as distinct ameliorants significantly decreased the uptake of PTEs by lettuce. The application of manure led to a 93 % decrease in arsenic (As) bioaccumulation in lettuce. Iron oxide resulted in a notable 67 % decrease in the bioaccumulation of As in lettuce. The exclusive application of manure led to an 83 % reduction in Hg uptake by lettuce plants, while Co uptake experienced a 46 % increase. Utilizing manure and iron oxides could prove beneficial in enhancing soil quality and potentially reducing the uptake of arsenic and mercury by lettuce grown in the contaminated mining site.
{"title":"Manure and iron oxide show potential for reducing uptake of arsenic and mercury in lettuce grown in a contaminated mining site","authors":"Albert Kobina Mensah ,&nbsp;Ephraim Sekyi-Annan ,&nbsp;Prince Addai ,&nbsp;Ophelia Osei Ulzen ,&nbsp;Musah Salifu ,&nbsp;Sadick Adams","doi":"10.1016/j.hazadv.2024.100545","DOIUrl":"10.1016/j.hazadv.2024.100545","url":null,"abstract":"<div><div>The poor soil quality and high concentrations of potentially toxic elements (PTEs) found in gold mine tailings make them inappropriate for crop production. Assessing the viability of mine tailings for crop production after mining is essential because of the harmful impacts of these PTEs on food safety and human health. A 44-day pot experiment was conducted to test the effectiveness of different soil amendments in reducing the levels of PTEs at a decommissioned mining site in south-western Ghana. Compost, iron oxides, and poultry manure were applied individually or in combination to the mine soil in the pots. Lettuce (<em>Lactuca sativa</em> L.) was subsequently planted in the pots. Upon reaching maturity, the lettuce was harvested, and an analysis of the nutrients and PTE contents in both the soil and plants was done. The uptake of PTE by lettuce was evaluated, and the transfer coefficients of the PTEs were determined. The addition of manure and iron oxide as distinct ameliorants significantly decreased the uptake of PTEs by lettuce. The application of manure led to a 93 % decrease in arsenic (As) bioaccumulation in lettuce. Iron oxide resulted in a notable 67 % decrease in the bioaccumulation of As in lettuce. The exclusive application of manure led to an 83 % reduction in Hg uptake by lettuce plants, while Co uptake experienced a 46 % increase. Utilizing manure and iron oxides could prove beneficial in enhancing soil quality and potentially reducing the uptake of arsenic and mercury by lettuce grown in the contaminated mining site.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100545"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extraction of biosurfactants from LDPE and PAH degrading bacterial strains isolated from plastics and oil contaminated sites: Statistical optimization using response surface methodology
IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-02-01 DOI: 10.1016/j.hazadv.2025.100603
Rajalakshmi Sridharan , Manasa Muralidharan , P. Senthil Kumar , K. Veena Gayathri , Gayathri Rangasamy
Bacterial strains degrading hydrophobic pollutants are known to produce surfactants, which reduce the hydrophobicity and enhance the biodegradation process. The bacterial strains reported in previous study with the ability to degrade LDPE and PAH were used in this study to screen for their ability to produce biosurfactants. The produced biosurfactant was optimized for enhanced activity using Response Surface Methodology (RSM). The P < 0.05 confirmed the reliability of the generated quadratic model for biosurfactant activity. The biosurfactant produced by S. hominis and V. owensi showed a positive hemolytic activity with a constant increase in the diameter of the zone formed. The former resulted in 4 µg/mL and the latter in 3 µg/mL of CMC. FTIR analysis indicated the presence of C-H stretching, C=O stretching, N-H stretching, and C=C stretching as common in biosurfactants produced by both bacterial strains. The 1H NMR revealed the presence of secondary amides/imides in the biosurfactants. GC–MS analysis indicated the presence of esters and acids in the biosurfactant. These conclude that the extracted biosurfactant is a mixture of compounds which degrades LDPE and PAHs.
{"title":"Extraction of biosurfactants from LDPE and PAH degrading bacterial strains isolated from plastics and oil contaminated sites: Statistical optimization using response surface methodology","authors":"Rajalakshmi Sridharan ,&nbsp;Manasa Muralidharan ,&nbsp;P. Senthil Kumar ,&nbsp;K. Veena Gayathri ,&nbsp;Gayathri Rangasamy","doi":"10.1016/j.hazadv.2025.100603","DOIUrl":"10.1016/j.hazadv.2025.100603","url":null,"abstract":"<div><div>Bacterial strains degrading hydrophobic pollutants are known to produce surfactants, which reduce the hydrophobicity and enhance the biodegradation process. The bacterial strains reported in previous study with the ability to degrade LDPE and PAH were used in this study to screen for their ability to produce biosurfactants. The produced biosurfactant was optimized for enhanced activity using Response Surface Methodology (RSM). The <em>P</em> &lt; 0.05 confirmed the reliability of the generated quadratic model for biosurfactant activity. The biosurfactant produced by <em>S. hominis</em> and V<em>. owensi</em> showed a positive hemolytic activity with a constant increase in the diameter of the zone formed. The former resulted in 4 µg/mL and the latter in 3 µg/mL of CMC. FTIR analysis indicated the presence of C-H stretching, C=O stretching, N-H stretching, and C=C stretching as common in biosurfactants produced by both bacterial strains. The <sup>1</sup>H NMR revealed the presence of secondary amides/imides in the biosurfactants. GC–MS analysis indicated the presence of esters and acids in the biosurfactant. These conclude that the extracted biosurfactant is a mixture of compounds which degrades LDPE and PAHs.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100603"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wastewater-impacted streams within an agricultural catchment: Occurrence, attenuation, and risks of organic micropollutants
IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-02-01 DOI: 10.1016/j.hazadv.2024.100572
Zita Zrínyi , Nikoletta Kovács , Renáta Gerencsér-Berta , Ildikó Galambos , Barbara Kovács , Tamás Kucserka , István Gábor Hatvani , Anna Viktória Vancsik , László Bauer , Lili Szabó , Zoltán Szalai , Gábor Maász , Attila Csaba Kondor
The occurrence, attenuation factors, and risks of 31 organic micropollutants (OMPs), including pharmaceutically active compounds (PhACs), pesticides, and bisphenols were investigated in the transboundary catchment of the lower River Mur. Water samples were collected monthly for one year from the river and its small, wastewater-impacted tributaries in two Central European countries, Croatia and Hungary. The analysis showed that the most polluted streams for PhACs, as well as the herbicides and neonicotinoids studied, were the smallest tributaries on the Hungarian side. However, the concentrations of persistent pollutants detected in almost all River Mur samples (e.g., bezafibrate, carbamazepine, diclofenac (DIC), atrazine) were not affected by the polluted water of the sampled tributaries. This, in turn, highlighted the importance of long-distance pollution of the river. Principal component analysis showed that photo- and biodegradation may be considered the most important attenuation factors in the river, resulting in lower OMP concentrations in warmer seasons. This, however, could not be confirmed in the case of the tributaries, in which there is not enough space and time for in-stream attenuation. The risk assessment showed that DIC and estrone were the pollutants of greatest risk in all watercourses investigated, including small streams. The key findings of the study are that even in small streams in rural settings, some wastewater-derived PhACs pose serious environmental risks throughout the year, compared to pesticides with stronger seasonality. This is exacerbated by low attenuation and increased detection of some non-persistent OMPs due to relatively low dilution and short retention time.
{"title":"Wastewater-impacted streams within an agricultural catchment: Occurrence, attenuation, and risks of organic micropollutants","authors":"Zita Zrínyi ,&nbsp;Nikoletta Kovács ,&nbsp;Renáta Gerencsér-Berta ,&nbsp;Ildikó Galambos ,&nbsp;Barbara Kovács ,&nbsp;Tamás Kucserka ,&nbsp;István Gábor Hatvani ,&nbsp;Anna Viktória Vancsik ,&nbsp;László Bauer ,&nbsp;Lili Szabó ,&nbsp;Zoltán Szalai ,&nbsp;Gábor Maász ,&nbsp;Attila Csaba Kondor","doi":"10.1016/j.hazadv.2024.100572","DOIUrl":"10.1016/j.hazadv.2024.100572","url":null,"abstract":"<div><div>The occurrence, attenuation factors, and risks of 31 organic micropollutants (OMPs), including pharmaceutically active compounds (PhACs), pesticides, and bisphenols were investigated in the transboundary catchment of the lower River Mur. Water samples were collected monthly for one year from the river and its small, wastewater-impacted tributaries in two Central European countries, Croatia and Hungary. The analysis showed that the most polluted streams for PhACs, as well as the herbicides and neonicotinoids studied, were the smallest tributaries on the Hungarian side. However, the concentrations of persistent pollutants detected in almost all River Mur samples (e.g., bezafibrate, carbamazepine, diclofenac (DIC), atrazine) were not affected by the polluted water of the sampled tributaries. This, in turn, highlighted the importance of long-distance pollution of the river. Principal component analysis showed that photo- and biodegradation may be considered the most important attenuation factors in the river, resulting in lower OMP concentrations in warmer seasons. This, however, could not be confirmed in the case of the tributaries, in which there is not enough space and time for in-stream attenuation. The risk assessment showed that DIC and estrone were the pollutants of greatest risk in all watercourses investigated, including small streams. The key findings of the study are that even in small streams in rural settings, some wastewater-derived PhACs pose serious environmental risks throughout the year, compared to pesticides with stronger seasonality. This is exacerbated by low attenuation and increased detection of some non-persistent OMPs due to relatively low dilution and short retention time.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100572"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Graphene-based materials and technologies for the treatment of PFAS in water: A review of recent developments
IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-02-01 DOI: 10.1016/j.hazadv.2025.100626
Amir Hossein Behroozi , Louise Meunier , Arghavan Mirahsani , Pascale Champagne , Ehssan H. Koupaie
Per and polyfluoroalkyl substances (PFAS) are anthropogenic chemicals used in various commercial and industrial applications. As an emerging global concern due to their ubiquity and toxicity, PFAS are the focus of ongoing environmental research. Although production is partially limited by regulations, PFAS are released in water, soil, and air worldwide. Considering their deleterious impacts on wildlife and humans, developing strategies to capture and remove PFAS is crucial. Graphene materials may be advantageously applied to PFAS remediation. A survey of graphene-based materials and technologies used to treat PFAS-contaminated water is presented in this review. First, the general concept of PFAS and their related environmental and health problems are outlined. Then, the features and structures of graphene-containing materials, including graphene quantum dots, graphene oxide (GO), reduced-GO, carbon nanotubes, and graphene nanoplatelets, are described. Finally, prevailing PFAS treatment techniques, i.e., adsorption, advanced oxidation processes, membrane separation, electrochemical separation, and hybrid applications, are described along with the mechanisms involved. Currently, PFAS cannot be effectively treated to the very low regulatory guidelines (less than one part per billion for certain compounds) using any current methods because of incomplete removal, impractical applications, or operating costs. Barriers remain, including adsorbent regeneration, membrane fouling, system scale up, and toxic by-product generation. Integrating graphene-based materials, especially graphene nanoplatelets, into treatment may address these problems if PFAS can be removed completely without secondary contamination. Further research is required to achieve effective PFAS removal. However, health and environmental risks remain associated with PFAS and graphene-based materials, which must be addressed.
{"title":"Graphene-based materials and technologies for the treatment of PFAS in water: A review of recent developments","authors":"Amir Hossein Behroozi ,&nbsp;Louise Meunier ,&nbsp;Arghavan Mirahsani ,&nbsp;Pascale Champagne ,&nbsp;Ehssan H. Koupaie","doi":"10.1016/j.hazadv.2025.100626","DOIUrl":"10.1016/j.hazadv.2025.100626","url":null,"abstract":"<div><div>Per and polyfluoroalkyl substances (PFAS) are anthropogenic chemicals used in various commercial and industrial applications. As an emerging global concern due to their ubiquity and toxicity, PFAS are the focus of ongoing environmental research. Although production is partially limited by regulations, PFAS are released in water, soil, and air worldwide. Considering their deleterious impacts on wildlife and humans, developing strategies to capture and remove PFAS is crucial. Graphene materials may be advantageously applied to PFAS remediation. A survey of graphene-based materials and technologies used to treat PFAS-contaminated water is presented in this review. First, the general concept of PFAS and their related environmental and health problems are outlined. Then, the features and structures of graphene-containing materials, including graphene quantum dots, graphene oxide (GO), reduced-GO, carbon nanotubes, and graphene nanoplatelets, are described. Finally, prevailing PFAS treatment techniques, i.e., adsorption, advanced oxidation processes, membrane separation, electrochemical separation, and hybrid applications, are described along with the mechanisms involved. Currently, PFAS cannot be effectively treated to the very low regulatory guidelines (less than one part per billion for certain compounds) using any current methods because of incomplete removal, impractical applications, or operating costs. Barriers remain, including adsorbent regeneration, membrane fouling, system scale up, and toxic by-product generation. Integrating graphene-based materials, especially graphene nanoplatelets, into treatment may address these problems if PFAS can be removed completely without secondary contamination. Further research is required to achieve effective PFAS removal. However, health and environmental risks remain associated with PFAS and graphene-based materials, which must be addressed.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100626"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
One-step hydrothermal process for fabrication of Bi2WO6/basic bismuth nitrate heterojunction with improved photocatalytic efficacy under visible light
IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-02-01 DOI: 10.1016/j.hazadv.2025.100624
Soghra Yaghoobi-Rahni , Habibollah Younesi , Nader Bahramifar , Hua Yang , Hassan Karimi-Maleh
A new structure composed of Bi2WO6 and basic bismuth nitrate, abbreviated as BWO/BBN composite, is made by a one-step hydrothermal process, with sodium borohydride (NaBH4) serving as the reducing agent. The composites were characterized using several techniques, including FT-IR, DRS, SEM, TEM, XPS, and XRD. The BET apparatus was applied to survey the surface area of the material. EIS, PL, and EPR tests were performed to explore the mechanism of the BWO/BBN process. Based on EPR investigation, when BWO/BBN was irradiated in the existence of DMPO, we observed the development of reactive oxygen species (ROS) including OH and O2-, as well as a broad EPR signal attributed to W5+ ions (g = 1.96). The BWO/BBN photocatalyst showed meaningfully amended separation of electrons and holes upon photoexcitation, as evidenced by the photocurrent and EIS procedure outcomes. The removal efficiency of BWO/BBN for Rhodamine B dye and tetracycline is 99 % in acidic pH and 90 % in basic pH, respectively. The photocatalytic cycle test was performed 5 times without chemical treatment, and the degradation efficiency remained the same. Based on experimental data, the BWO/BBN composite showed great promise for application in the photocatalytic decay of organic impurities illuminated by visible light.
{"title":"One-step hydrothermal process for fabrication of Bi2WO6/basic bismuth nitrate heterojunction with improved photocatalytic efficacy under visible light","authors":"Soghra Yaghoobi-Rahni ,&nbsp;Habibollah Younesi ,&nbsp;Nader Bahramifar ,&nbsp;Hua Yang ,&nbsp;Hassan Karimi-Maleh","doi":"10.1016/j.hazadv.2025.100624","DOIUrl":"10.1016/j.hazadv.2025.100624","url":null,"abstract":"<div><div>A new structure composed of Bi<sub>2</sub>WO<sub>6</sub> and basic bismuth nitrate, abbreviated as BWO/BBN composite, is made by a one-step hydrothermal process, with sodium borohydride (NaBH<sub>4</sub>) serving as the reducing agent. The composites were characterized using several techniques, including FT-IR, DRS, SEM, TEM, XPS, and XRD. The BET apparatus was applied to survey the surface area of the material. EIS, PL, and EPR tests were performed to explore the mechanism of the BWO/BBN process. Based on EPR investigation, when BWO/BBN was irradiated in the existence of DMPO, we observed the development of reactive oxygen species (ROS) including <sup>•</sup>OH and <sup>•</sup>O<sub>2</sub><sup>-</sup>, as well as a broad EPR signal attributed to W<sup>5+</sup> ions (g = 1.96). The BWO/BBN photocatalyst showed meaningfully amended separation of electrons and holes upon photoexcitation, as evidenced by the photocurrent and EIS procedure outcomes. The removal efficiency of BWO/BBN for Rhodamine B dye and tetracycline is 99 % in acidic pH and 90 % in basic pH, respectively. The photocatalytic cycle test was performed 5 times without chemical treatment, and the degradation efficiency remained the same. Based on experimental data, the BWO/BBN composite showed great promise for application in the photocatalytic decay of organic impurities illuminated by visible light.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100624"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143343031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Seasonal eutrophication in lentic small waterbodies: Understanding nutrients-chlorophyll-a relationships and implications
IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-02-01 DOI: 10.1016/j.hazadv.2024.100563
Pooja Singh, Basant Yadav
Assessing seasonal variations in pollution within lentic small waterbodies (LSWBs) is crucial, particularly in regions with significant temperature and rainfall fluctuations, as these variations are driven by natural and anthropogenic inputs from both point and non-point sources. This study assesses the seasonal dynamics of physicochemical parameters and their impact on the trophic status of lentic small waterbodies (LSWBs). Using statistical modeling, including regression analysis, it explores chlorophyll-a (Chl-a) as a proxy for eutrophication and establishes empirical relationships between nutrients (TN, TP) and Chl-a based on data collected from December 2022 to November 2023. The ratios of total nitrogen (TN) to total phosphorus (TP) were analysed to understand the conditions that limit phytoplankton biomass production. Nutrient (TN, TP)-Chl-a correlations were established to explain seasonal eutrophication in these waterbodies. Furthermore, the trophic level index (TLI) was employed to assess the eutrophication status across seasons. The results suggest that LSWBs are the most polluted during the monsoon season, characterised by low Secchi disk depth (SDD) and dissolved oxygen (DO), along with high TN/TP concentrations from domestic sewage and agricultural runoff. Nutrient (TN:TP) ratios and their correlations with Chl-a suggest that TN (<10) primarily affects algal growth, especially during monsoons. TN:TP ratio displayed a notable rise in the post-monsoon season for all three LSWBs. TLI assessment indicated a general deterioration in water quality from oligotrophic (0 to 30) to hypertrophic (70 to 100) conditions in the monsoon and post-monsoon seasons. Our findings highlight the importance of accounting for limitation-specific, season-specific, and type-specific correlations between algal biomass and environmental factors. By subdividing water bodies for type-specific management, the research offers a framework to address the limitations in interpreting empirical nutrient-Chl-a relationships. These findings contribute to more accurate, site-specific management strategies for mitigating eutrophication, advancing both regional and global efforts to protect freshwater ecosystems.
{"title":"Seasonal eutrophication in lentic small waterbodies: Understanding nutrients-chlorophyll-a relationships and implications","authors":"Pooja Singh,&nbsp;Basant Yadav","doi":"10.1016/j.hazadv.2024.100563","DOIUrl":"10.1016/j.hazadv.2024.100563","url":null,"abstract":"<div><div>Assessing seasonal variations in pollution within lentic small waterbodies (LSWBs) is crucial, particularly in regions with significant temperature and rainfall fluctuations, as these variations are driven by natural and anthropogenic inputs from both point and non-point sources. This study assesses the seasonal dynamics of physicochemical parameters and their impact on the trophic status of lentic small waterbodies (LSWBs). Using statistical modeling, including regression analysis, it explores chlorophyll-a (Chl-a) as a proxy for eutrophication and establishes empirical relationships between nutrients (TN, TP) and Chl-a based on data collected from December 2022 to November 2023. The ratios of total nitrogen (TN) to total phosphorus (TP) were analysed to understand the conditions that limit phytoplankton biomass production. Nutrient (TN, TP)-Chl-a correlations were established to explain seasonal eutrophication in these waterbodies. Furthermore, the trophic level index (TLI) was employed to assess the eutrophication status across seasons. The results suggest that LSWBs are the most polluted during the monsoon season, characterised by low Secchi disk depth (SDD) and dissolved oxygen (DO), along with high TN/TP concentrations from domestic sewage and agricultural runoff. Nutrient (TN:TP) ratios and their correlations with Chl-a suggest that TN (&lt;10) primarily affects algal growth, especially during monsoons. TN:TP ratio displayed a notable rise in the post-monsoon season for all three LSWBs. TLI assessment indicated a general deterioration in water quality from oligotrophic (0 to 30) to hypertrophic (70 to 100) conditions in the monsoon and post-monsoon seasons. Our findings highlight the importance of accounting for limitation-specific, season-specific, and type-specific correlations between algal biomass and environmental factors. By subdividing water bodies for type-specific management, the research offers a framework to address the limitations in interpreting empirical nutrient-Chl-a relationships. These findings contribute to more accurate, site-specific management strategies for mitigating eutrophication, advancing both regional and global efforts to protect freshwater ecosystems.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100563"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Environmental pollution and the risk of congenital hypothyroidism: Insights from a French nationwide retrospective ecological cohort study
IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-02-01 DOI: 10.1016/j.hazadv.2024.100560
Sylvain Chamot , Pascal Petit , Abdallah Al-Salameh , Vincent Bonneterre , Christophe Cancé , Guillaume Decocq , Rachel Desailloud

Objective

To assess the potential association between congenital hypothyroidism (CH) and third-trimester maternal exposure to nitrate and perchlorate in tap water and to particulate matter (PM) in outdoor air.

Methods

Using the French National Health Data System (SNDS), a retrospective ecological cohort was created, including all children born in France between 2014 and 2019. Ecological data for each child's municipality were used to examine associations, measured as odds ratios (OR), between mean exposure levels and CH in 1,417,402 newborns . Both single and multipollutant analyses were undertaken. To limit residual bias from the administrative nature of SNDS, analyses were conducted at both national and regional levels. The Benjamini-Hochberg approach was used to account for multiple testing.

Results

Higher exposure to nitrates was associated with a greater risk of permanent CH (OR [95%CI] = 1.017 [1.001;1.035] in the Nord-Pas-de-Calais region and 1.024 [1.001;1.048] for the Pays-de-la-Loire region). Higher exposure to PM2.5 or PM10 was associated with a lower risk of permanent CH (OR [95%CI] = 0.928 [0.873;0.982] for PM10 in the Nord-Pas-de-Calais). These findings were confirmed in multi-pollutant analyses.

Conclusions

In some French regions, prenatal exposure to nitrate ions in tap water was significantly associated with an elevated risk of permanent HC, while exposure to PM was significantly associated with a decreased risk. However, using municipal-level exposure proxies may introduce ecological bias, and results were not robust enough to draw firm conclusions about pollutant influence on CH risk.
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引用次数: 0
Inulin improved endometrial ciliary damage caused by DEHP and nanoplastics co-exposure
IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-02-01 DOI: 10.1016/j.hazadv.2025.100590
Peigen Chen , Lina Chen , Xing Yang , Tingting Li , Cong Fang
The pervasive contamination by Di(2-ethylhexyl) phthalate (DEHP) and nanoplastics (NPs) poses a significant threat to reproductive health, yet the combined effects of these pollutants on endometrial receptivity remain poorly understood. Our study investigates the impact of chronic DEHP and NPs co-exposure on endometrial ciliary function in mice and explores the potential protective role of dietary inulin. Utilizing a multifaceted approach—including transcriptomic analysis, immunohistochemistry, scanning electron microscopy, and immunofluorescence—we reveal that DEHP and NPs synergistically impair endometrial cilia, crucial for embryo implantation. Remarkably, inulin supplementation restores ciliary structure and function, mitigating the detrimental effects of these pollutants. Our findings suggest that dietary interventions could offer a practical strategy to counteract the reproductive toxicity of environmental contaminants, providing new insights into maintaining reproductive health in polluted environments. This research underscores the urgency of addressing environmental pollutants and highlights the potential of inulin as a protective agent against reproductive toxicity.
{"title":"Inulin improved endometrial ciliary damage caused by DEHP and nanoplastics co-exposure","authors":"Peigen Chen ,&nbsp;Lina Chen ,&nbsp;Xing Yang ,&nbsp;Tingting Li ,&nbsp;Cong Fang","doi":"10.1016/j.hazadv.2025.100590","DOIUrl":"10.1016/j.hazadv.2025.100590","url":null,"abstract":"<div><div>The pervasive contamination by Di(2-ethylhexyl) phthalate (DEHP) and nanoplastics (NPs) poses a significant threat to reproductive health, yet the combined effects of these pollutants on endometrial receptivity remain poorly understood. Our study investigates the impact of chronic DEHP and NPs co-exposure on endometrial ciliary function in mice and explores the potential protective role of dietary inulin. Utilizing a multifaceted approach—including transcriptomic analysis, immunohistochemistry, scanning electron microscopy, and immunofluorescence—we reveal that DEHP and NPs synergistically impair endometrial cilia, crucial for embryo implantation. Remarkably, inulin supplementation restores ciliary structure and function, mitigating the detrimental effects of these pollutants. Our findings suggest that dietary interventions could offer a practical strategy to counteract the reproductive toxicity of environmental contaminants, providing new insights into maintaining reproductive health in polluted environments. This research underscores the urgency of addressing environmental pollutants and highlights the potential of inulin as a protective agent against reproductive toxicity.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100590"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Using the rhizofiltration ability of Colocasia esculenta to mitigate impacts of diuron without affecting its food consumption
IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Pub Date : 2025-02-01 DOI: 10.1016/j.hazadv.2024.100583
Pierre-Alexandre Deyris, Franck Pelissier, Claire M. Grison, Claude Grison
In the last 30 years, the use of herbicides worldwide has doubled and these products were dispersed in soil and water. Many cases of contamination of tropical aquatic ecosystems were reported such as the case of diuron in South East Asia, Pacific and Africa for food crops such as pineapple. In parallel, taro (Colocasia esculenta or C. esculenta) large-scale cultivation is well established and the C. esculenta tubers consumption falls within local culinary uses. Here we propose a nature-based solution to mitigate the impact of diuron herbicide on tropical aquatic ecosystem. The aim of this perspective article is to illustrate the ability of cultivated plant C. esculenta to phytoaccumulate diuron pollutant by rhizofiltration. The resulting C. esculenta underwent several treatment steps to be suitable for precise diuron quantification. Analyses showed that the heart of the tubers contained less diuron than the recommended European standards and thus, could be still edible by local population which confirms the compatibility of the uses.
{"title":"Using the rhizofiltration ability of Colocasia esculenta to mitigate impacts of diuron without affecting its food consumption","authors":"Pierre-Alexandre Deyris,&nbsp;Franck Pelissier,&nbsp;Claire M. Grison,&nbsp;Claude Grison","doi":"10.1016/j.hazadv.2024.100583","DOIUrl":"10.1016/j.hazadv.2024.100583","url":null,"abstract":"<div><div>In the last 30 years, the use of herbicides worldwide has doubled and these products were dispersed in soil and water. Many cases of contamination of tropical aquatic ecosystems were reported such as the case of diuron in South East Asia, Pacific and Africa for food crops such as pineapple. In parallel, taro (<em>Colocasia esculenta</em> or <em>C. esculenta</em>) large-scale cultivation is well established and the <em>C. esculenta</em> tubers consumption falls within local culinary uses. Here we propose a nature-based solution to mitigate the impact of diuron herbicide on tropical aquatic ecosystem. The aim of this perspective article is to illustrate the ability of cultivated plant <em>C. esculenta</em> to phytoaccumulate diuron pollutant by rhizofiltration. The resulting <em>C. esculenta</em> underwent several treatment steps to be suitable for precise diuron quantification. Analyses showed that the heart of the tubers contained less diuron than the recommended European standards and thus, could be still edible by local population which confirms the compatibility of the uses.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"17 ","pages":"Article 100583"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Journal of hazardous materials advances
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