Pub Date : 2025-04-08DOI: 10.1016/j.envres.2025.121567
Pengfei Zhang , Nengwu Zhu , Fei Li , Fangyuan Li , Wei Leng , Yunhao Xi , Pingxiao Wu , Sihai Zhang
High-value utilization and pollution control of municipal solid waste incineration fly ash (MSWI FA) are global concerns. While microcrystalline glass has emerged as a promising solution, the immobilization and reduction of heavy metals remains a critical bottleneck hindering its application. This study proposed a synergistic preparation of high-performance and low-residue microcrystalline glass by MSWI FA, secondary aluminum ash (SAA), and fluorite tailings (FT). The prepared microcrystalline glass exhibited excellent performance, with Vickers hardness, and acid and alkali corrosion resistance reaching up to 8.71 GPa, 99.83 %, and 99.97 %, respectively. The deposited and semi-deposited heavy metals including Ba, Cu, and Cr were crystallized by replacing anorthite, diopside, and spinel to form a solid solution with immobilization efficiencies of 99.82 %, 98.51 %, and 99.12 %, respectively. Meanwhile, 97.47 % of Zn, 99.18 % of Pb, 100 % of Cd, 45.96 % of Cu, and 99.89 % of Cl could be volatilized and enriched in the secondary ash. Therefore, the proposal strategy of microcrystalline glass preparation by MSWI FA, SAA, and FT could be a potential route for high-value utilization.
{"title":"Preparation of microcrystalline glass by municipal solid waste incineration fly ash: heavy metals crystallization mechanism","authors":"Pengfei Zhang , Nengwu Zhu , Fei Li , Fangyuan Li , Wei Leng , Yunhao Xi , Pingxiao Wu , Sihai Zhang","doi":"10.1016/j.envres.2025.121567","DOIUrl":"10.1016/j.envres.2025.121567","url":null,"abstract":"<div><div>High-value utilization and pollution control of municipal solid waste incineration fly ash (MSWI FA) are global concerns. While microcrystalline glass has emerged as a promising solution, the immobilization and reduction of heavy metals remains a critical bottleneck hindering its application. This study proposed a synergistic preparation of high-performance and low-residue microcrystalline glass by MSWI FA, secondary aluminum ash (SAA), and fluorite tailings (FT). The prepared microcrystalline glass exhibited excellent performance, with Vickers hardness, and acid and alkali corrosion resistance reaching up to 8.71 GPa, 99.83 %, and 99.97 %, respectively. The deposited and semi-deposited heavy metals including Ba, Cu, and Cr were crystallized by replacing anorthite, diopside, and spinel to form a solid solution with immobilization efficiencies of 99.82 %, 98.51 %, and 99.12 %, respectively. Meanwhile, 97.47 % of Zn, 99.18 % of Pb, 100 % of Cd, 45.96 % of Cu, and 99.89 % of Cl could be volatilized and enriched in the secondary ash. Therefore, the proposal strategy of microcrystalline glass preparation by MSWI FA, SAA, and FT could be a potential route for high-value utilization.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"277 ","pages":"Article 121567"},"PeriodicalIF":7.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this study, a CoCu-based-ZSM-5 (CCM-0.2) material with high stability and excellent reactivity was synthesized to activate PMS for the degradation of levofloxacin (LEV). This material was synthesized by combining Co3O4 and CuO nanoparticles with ZSM-5 zeolite through an in-situ synthesis method. The findings demonstrated that the CCM-0.2/PMS system was capable of efficiently degrade LEV in a pH range of 5–9, achieving a degradation efficiency of 96 % within 30 min under optimal conditions. Furthermore, the system exhibited favorable degradation performance for various antibiotics and adaptability to different water quality conditions, maintaining a degradation efficiency of 81 % after five cycles of experiments. Quenching experiments and EPR detection revealed the presence of a radical/non-radical dual degradation mechanism in the CCM-0.2/PMS system, with 1O2 being the predominant species. The degradation pathway of LEV and the toxicity of its intermediate products were analyzed using LC-MS and the ECOSAR software.
{"title":"CoCu-based-ZSM-5 activates PMS for efficient LEV degradation: Dual mechanism degradation dominated by singlet oxygen","authors":"Xiaoning Jia, Haixin He, Xia Zhao, Yabin Li, Chunxiang Wang, Jingwen Wu, Yanhui Yang","doi":"10.1016/j.envres.2025.121569","DOIUrl":"10.1016/j.envres.2025.121569","url":null,"abstract":"<div><div>In this study, a CoCu-based-ZSM-5 (CCM-0.2) material with high stability and excellent reactivity was synthesized to activate PMS for the degradation of levofloxacin (LEV). This material was synthesized by combining Co<sub>3</sub>O<sub>4</sub> and CuO nanoparticles with ZSM-5 zeolite through an in-situ synthesis method. The findings demonstrated that the CCM-0.2/PMS system was capable of efficiently degrade LEV in a pH range of 5–9, achieving a degradation efficiency of 96 % within 30 min under optimal conditions. Furthermore, the system exhibited favorable degradation performance for various antibiotics and adaptability to different water quality conditions, maintaining a degradation efficiency of 81 % after five cycles of experiments. Quenching experiments and EPR detection revealed the presence of a radical/non-radical dual degradation mechanism in the CCM-0.2/PMS system, with <sup>1</sup>O<sub>2</sub> being the predominant species. The degradation pathway of LEV and the toxicity of its intermediate products were analyzed using LC-MS and the ECOSAR software.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"277 ","pages":"Article 121569"},"PeriodicalIF":7.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-08DOI: 10.1016/j.envres.2025.121573
Jingyu Li , Xiaoxiao Meng , Wei Zhou , Yulin Feng , Junfeng Li , Naiyuan Xue , Liang Xie , Zheyu Liu , Jihui Gao , Fei Sun , Guangbo Zhao
The creation of ultramicroporous carbon with highly developed pore structures for CO2 adsorption is a promising approach to addressing the challenges posed by CO2 emissions. However, traditional activation methods often struggle with controlling pore development, making it difficult for porous carbon to achieve both high ultramicroporosity and a substantial specific surface area (SBET), simultaneously. Herein, we introduce a scalable strategy that utilizes oxygen-rich precursors to enhance chemical activation, allowing for precise regulation of ultramicropores while ensuring sufficient pore development. Preoxidation in air results in a loose carbon structure, abundant active sites (oxygen-functional groups), and well-formed initial pores in the precursor. These features effectively facilitate the distribution of the activator and the etching of the carbon matrix, leading to the formation of new pores in the porous carbon. The ultramicropores measuring 0.65–0.7 nm in the porous carbon are selectively enhanced, with their volume increasing from 0.12 cm3/g to 0.26 cm3/g. Thanks to the high microporosity (84.27 %–91.07 %) and substantial SBET (1589–2760 m2/g), the ultramicroporous carbon prepared through this strategy demonstrates impressive CO2 uptake of 4.26 mmol/g (298 K, 1 bar) and 6.79 mmol/g (273 K, 1 bar), along with favorable regeneration economy (Qst of 37.33 kJ/mol) and high CO2/N2 selectivity (Sads of 56). This research offers valuable insights into the targeted regulation of ultramicropores and the design of porous carbon with outstanding CO2 adsorption capabilities.
{"title":"Preparation of ultramicroporous carbon for gas adsorption through oxygen-rich precursor-enhanced chemical activation","authors":"Jingyu Li , Xiaoxiao Meng , Wei Zhou , Yulin Feng , Junfeng Li , Naiyuan Xue , Liang Xie , Zheyu Liu , Jihui Gao , Fei Sun , Guangbo Zhao","doi":"10.1016/j.envres.2025.121573","DOIUrl":"10.1016/j.envres.2025.121573","url":null,"abstract":"<div><div>The creation of ultramicroporous carbon with highly developed pore structures for CO<sub>2</sub> adsorption is a promising approach to addressing the challenges posed by CO<sub>2</sub> emissions. However, traditional activation methods often struggle with controlling pore development, making it difficult for porous carbon to achieve both high ultramicroporosity and a substantial specific surface area (<em>S</em><sub>BET</sub>), simultaneously. Herein, we introduce a scalable strategy that utilizes oxygen-rich precursors to enhance chemical activation, allowing for precise regulation of ultramicropores while ensuring sufficient pore development. Preoxidation in air results in a loose carbon structure, abundant active sites (oxygen-functional groups), and well-formed initial pores in the precursor. These features effectively facilitate the distribution of the activator and the etching of the carbon matrix, leading to the formation of new pores in the porous carbon. The ultramicropores measuring 0.65–0.7 nm in the porous carbon are selectively enhanced, with their volume increasing from 0.12 cm<sup>3</sup>/g to 0.26 cm<sup>3</sup>/g. Thanks to the high microporosity (84.27 %–91.07 %) and substantial <em>S</em><sub>BET</sub> (1589–2760 m<sup>2</sup>/g), the ultramicroporous carbon prepared through this strategy demonstrates impressive CO<sub>2</sub> uptake of 4.26 mmol/g (298 K, 1 bar) and 6.79 mmol/g (273 K, 1 bar), along with favorable regeneration economy (<em>Q</em><sub>st</sub> of 37.33 kJ/mol) and high CO<sub>2</sub>/N<sub>2</sub> selectivity (<em>S</em><sub>ads</sub> of 56). This research offers valuable insights into the targeted regulation of ultramicropores and the design of porous carbon with outstanding CO<sub>2</sub> adsorption capabilities.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"277 ","pages":"Article 121573"},"PeriodicalIF":7.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-08DOI: 10.1016/j.envres.2025.121566
Markus Hermann , Lara Schuijt , Dania Albini , Mawuli K. Amekor , Dick Belgers , Marie-Claire Boerwinkel , Ann M. Evarita , Anna Huang , Michelle C. Jackson , Edwin T.H.M. Peeters , Ivo Roessink , Jasper van Smeden , Paul J. Van den Brink
Heatwaves and increasing average temperatures associated with climate change pose severe stress on nature, including freshwater ecosystems. As these thermal stressors do not act in isolation over temporal or spatial scales, interactions with other stressors, like pesticides, may lead to unpredictable combined effects. Empirical studies investigating multiple stressor effects across different trophic levels are scarce and often lack environmental realism. Here, we performed a multiple stressor experiment using outdoor freshwater mesocosms and realistic pond assemblages including microbes, phytoplankton, macrophytes, and invertebrates. The effects of the pesticide imidacloprid at three dosings (0, 1, 10 μg/L) were examined in combination with three temperature scenarios comprising natural ambient, elevated temperatures (+4 °C), and repeated heatwaves (+8 °C). Our results reveal fast imidacloprid dissipation for all temperature treatments with the lowest average dissipation half-lives (DT50: 6 days) in the heatwave treatment. Imidacloprid induced a series of significant effects on the macroinvertebrate community at 10 μg/L across the temperature treatments. Significant declines in abundance appeared throughout the experiment for the most sensitive taxa Cloeon dipterum, Caenis sp., Chironomini, and Dero sp., whereas significant imidacloprid effects on Tanytarsini, Chironomus, and Gammarus pulex occurred only after each dosing. Only Zygoptera showed an imidacloprid-related increase in abundance, whereas significantly adverse time-cumulative effects on abundance occurred for Asellus aquaticus. The zooplankton community showed imidacloprid tolerance (10 μg/L) with increasing abundances of Chydorus sphaericus, Acroperus harpae, and Ascomorpha. Heatwaves induced significantly meliorating effects on Dero sp. and adverse effects on Caenis sp., Tanytarsini, G. pulex, and A. harpae. The macroinvertebrate community demonstrated faster post-exposure recovery dynamics in the highest imidacloprid treatment when previously exposed to heatwaves and elevated temperatures compared to ambient conditions. Overall, heatwaves amplified the effects of imidacloprid on the invertebrate community, manifesting in manifold effects that adversely impacted multiple trophic levels.
{"title":"Heatwaves, elevated temperature, and insecticide-induced effects at different trophic levels of a freshwater ecosystem","authors":"Markus Hermann , Lara Schuijt , Dania Albini , Mawuli K. Amekor , Dick Belgers , Marie-Claire Boerwinkel , Ann M. Evarita , Anna Huang , Michelle C. Jackson , Edwin T.H.M. Peeters , Ivo Roessink , Jasper van Smeden , Paul J. Van den Brink","doi":"10.1016/j.envres.2025.121566","DOIUrl":"10.1016/j.envres.2025.121566","url":null,"abstract":"<div><div>Heatwaves and increasing average temperatures associated with climate change pose severe stress on nature, including freshwater ecosystems. As these thermal stressors do not act in isolation over temporal or spatial scales, interactions with other stressors, like pesticides, may lead to unpredictable combined effects. Empirical studies investigating multiple stressor effects across different trophic levels are scarce and often lack environmental realism. Here, we performed a multiple stressor experiment using outdoor freshwater mesocosms and realistic pond assemblages including microbes, phytoplankton, macrophytes, and invertebrates. The effects of the pesticide imidacloprid at three dosings (0, 1, 10 μg/L) were examined in combination with three temperature scenarios comprising natural ambient, elevated temperatures (+4 °C), and repeated heatwaves (+8 °C). Our results reveal fast imidacloprid dissipation for all temperature treatments with the lowest average dissipation half-lives (DT<sub>50</sub>: 6 days) in the heatwave treatment. Imidacloprid induced a series of significant effects on the macroinvertebrate community at 10 μg/L across the temperature treatments. Significant declines in abundance appeared throughout the experiment for the most sensitive taxa <em>Cloeon dipterum</em>, <em>Caenis</em> sp., Chironomini, and <em>Dero</em> sp., whereas significant imidacloprid effects on Tanytarsini, <em>Chironomus</em>, and <em>Gammarus pulex</em> occurred only after each dosing. Only Zygoptera showed an imidacloprid-related increase in abundance, whereas significantly adverse time-cumulative effects on abundance occurred for <em>Asellus aquaticus</em>. The zooplankton community showed imidacloprid tolerance (10 μg/L) with increasing abundances of <em>Chydorus sphaericus</em>, <em>Acroperus harpae</em>, and Ascomorpha. Heatwaves induced significantly meliorating effects on <em>Dero</em> sp. and adverse effects on <em>Caenis</em> sp., Tanytarsini, <em>G. pulex,</em> and <em>A. harpae</em>. The macroinvertebrate community demonstrated faster post-exposure recovery dynamics in the highest imidacloprid treatment when previously exposed to heatwaves and elevated temperatures compared to ambient conditions. Overall, heatwaves amplified the effects of imidacloprid on the invertebrate community, manifesting in manifold effects that adversely impacted multiple trophic levels.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"277 ","pages":"Article 121566"},"PeriodicalIF":7.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-08DOI: 10.1016/j.envres.2025.121558
Lenka Franková , Eric Whale , David Hepworth , Stephen C. Fry
Gigatons of cellulose are synthesised and degraded annually. Under-utilised cellulose, e.g. from sugar-beet pulp (‘Curran’) and recycled paper, could be valorised by Equisetum hetero-trans-β-glucanase (HTG), the only known enzyme modifying cellulose non-destructively. It catalyses hetero-transglycosylation, with cellulose as donor substrate and xyloglucan oligosaccharides (XGOs) as acceptor, creating cellulose-XGO covalent bonds. Interestingly, XGOs participate in this reaction even if linked to a biotechnologically-valuable ‘cargo’, e.g. a dye, fluorophore, cation, anion, hydrophobic compound or antibiotic, beneficially functionalising the cellulose. Here, we tested whether HTG acts on intransigent agricultural/industrial celluloses.
Curran was found to be a pectin- and hemicellulose-poor, but cellulose-rich product, thus potentially enhanceable by HTG technology.
To generate industrial quantities of HTG, we explored Equisetum extraction methods, comparing extractants (buffers versus tap-water), extractant ratios, homogenisation technique, work-up (centrifugation versus filtration) and salting out. Pleasingly, simplified ‘industrial’ methods were 75–85 % as effective as laboratory methods. Up-scaled heterologous expression in Pichia also yielded plentiful EfHTG. Thus diverse methods enabled bulk HTG production.
All HTG preparations tested acted on pure cellulose (Whatman filter-paper; donor substrate) and radioactive or fluorescent cargo-bearing XGOs ([3H]XXXGol or XXXGol-sulphorhodamine respectively; model acceptor substrates). Diverse HTG preparations acted on potentially ‘intractable’ celluloses, e.g. Curran and crude recycled brown card, at rates comparable to those on pure celluloses (filter-paper and virgin white never-dried pulp). Where necessary, coarse industrial celluloses were H2SO4-hydrolysed to expose underestimated signal from incorporated but ‘masked’ radioactive substrate.
Unlike surface-finish modifications, HTG-catalysed bonding of cargoes to cellulose is covalent (thus highly stable) and environmentally friendly (green sustainable technology).
{"title":"A unique Equisetum enzyme, hetero-trans-β-glucanase (HTG), enhances industrially and environmentally important cellulose-rich materials","authors":"Lenka Franková , Eric Whale , David Hepworth , Stephen C. Fry","doi":"10.1016/j.envres.2025.121558","DOIUrl":"10.1016/j.envres.2025.121558","url":null,"abstract":"<div><div>Gigatons of cellulose are synthesised and degraded annually. Under-utilised cellulose, e.g. from sugar-beet pulp (‘Curran’) and recycled paper, could be valorised by <em>Equisetum</em> hetero-trans-β-glucanase (HTG), the only known enzyme modifying cellulose non-destructively. It catalyses hetero-transglycosylation, with cellulose as donor substrate and xyloglucan oligosaccharides (XGOs) as acceptor, creating cellulose-XGO covalent bonds. Interestingly, XGOs participate in this reaction even if linked to a biotechnologically-valuable ‘cargo’, e.g. a dye, fluorophore, cation, anion, hydrophobic compound or antibiotic, beneficially functionalising the cellulose. Here, we tested whether HTG acts on intransigent agricultural/industrial celluloses.</div><div>Curran was found to be a pectin- and hemicellulose-poor, but cellulose-rich product, thus potentially enhanceable by HTG technology.</div><div>To generate industrial quantities of HTG, we explored <em>Equisetum</em> extraction methods, comparing extractants (buffers versus tap-water), extractant ratios, homogenisation technique, work-up (centrifugation versus filtration) and salting out. Pleasingly, simplified ‘industrial’ methods were 75–85 % as effective as laboratory methods. Up-scaled heterologous expression in <em>Pichia</em> also yielded plentiful <em>Ef</em>HTG. Thus diverse methods enabled bulk HTG production.</div><div>All HTG preparations tested acted on pure cellulose (Whatman filter-paper; donor substrate) and radioactive or fluorescent cargo-bearing XGOs ([<sup>3</sup>H]XXXGol or XXXGol-sulphorhodamine respectively; model acceptor substrates). Diverse HTG preparations acted on potentially ‘intractable’ celluloses, e.g. Curran and crude recycled brown card, at rates comparable to those on pure celluloses (filter-paper and virgin white never-dried pulp). Where necessary, coarse industrial celluloses were H<sub>2</sub>SO<sub>4</sub>-hydrolysed to expose underestimated signal from incorporated but ‘masked’ radioactive substrate.</div><div>Unlike surface-finish modifications, HTG-catalysed bonding of cargoes to cellulose is covalent (thus highly stable) and environmentally friendly (green sustainable technology).</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"277 ","pages":"Article 121558"},"PeriodicalIF":7.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-08DOI: 10.1016/j.envres.2025.121575
Xiangyu Wang , Jiangang Wang , Xi Wu , Ping Ning , Iseult Lynch
This paper presents the design and evaluation of a novel photocatalyst, Fe@Bi2MoO6@BiOI, featuring a double S-scheme-type heterojunction aimed at enhancing antibiotic removal and degradation. This innovative configuration promotes a high degree of dispersion of nano-zero-valent iron (NZVI), significantly improving the removal efficiency of antibiotics and the deep mineralization of tetracycline (TC). The optical properties of the NZVI passivation layer were confirmed through characterization techniques, demonstrating energy band structural alignment with Bi2MoO6 and BiOI, which facilitated the effective construction of the heterojunction. The phot catalytic efficiency of the Fe@Bi2MoO6@BiOI catalyst was measured to be 1.24, 3.93, and 4.61 times greater than that of pure Fe0, BiOI, and Bi2MoO6, respectively, achieving a mineralization rate of 75.02 %. This impressive catalytic performance is attributed to the reducing properties of Fe0 and the generation of key reactive species, including •O2−, •OH, and h+. Furthermore, through LC-MS analysis, three degradation pathways for TC were elucidated, revealing that the toxicity of the degraded TC solution was significantly reduced, as confirmed by toxicity assessments and biocultivation experiments. This study underscores the potential of NZVI-based dual S-scheme-type heterojunctions for addressing antibiotic contamination and creatively illustrates the heterogeneous photo-Fenton degradation capabilities of these structures. The results highlight the synergistic effect of dual heterojunctions and provide new ideas for future applications in environmental remediation.
{"title":"Intrinsic linkage of double S-scheme heterojunctions based on Fe@Bi2MoO6@BiOI construction for photodegradation of tetracyclines: Enhanced antibiotic mineralization and detoxification","authors":"Xiangyu Wang , Jiangang Wang , Xi Wu , Ping Ning , Iseult Lynch","doi":"10.1016/j.envres.2025.121575","DOIUrl":"10.1016/j.envres.2025.121575","url":null,"abstract":"<div><div>This paper presents the design and evaluation of a novel photocatalyst, Fe@Bi<sub>2</sub>MoO<sub>6</sub>@BiOI, featuring a double S-scheme-type heterojunction aimed at enhancing antibiotic removal and degradation. This innovative configuration promotes a high degree of dispersion of nano-zero-valent iron (NZVI), significantly improving the removal efficiency of antibiotics and the deep mineralization of tetracycline (TC). The optical properties of the NZVI passivation layer were confirmed through characterization techniques, demonstrating energy band structural alignment with Bi<sub>2</sub>MoO<sub>6</sub> and BiOI, which facilitated the effective construction of the heterojunction. The phot catalytic efficiency of the Fe@Bi<sub>2</sub>MoO<sub>6</sub>@BiOI catalyst was measured to be 1.24, 3.93, and 4.61 times greater than that of pure Fe<sup>0</sup>, BiOI, and Bi<sub>2</sub>MoO<sub>6</sub>, respectively, achieving a mineralization rate of 75.02 %. This impressive catalytic performance is attributed to the reducing properties of Fe<sup>0</sup> and the generation of key reactive species, including •O<sub>2</sub><sup>−</sup>, •OH, and h<sup>+</sup>. Furthermore, through LC-MS analysis, three degradation pathways for TC were elucidated, revealing that the toxicity of the degraded TC solution was significantly reduced, as confirmed by toxicity assessments and biocultivation experiments. This study underscores the potential of NZVI-based dual S-scheme-type heterojunctions for addressing antibiotic contamination and creatively illustrates the heterogeneous photo-Fenton degradation capabilities of these structures. The results highlight the synergistic effect of dual heterojunctions and provide new ideas for future applications in environmental remediation.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"277 ","pages":"Article 121575"},"PeriodicalIF":7.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-08DOI: 10.1016/j.envres.2025.121571
Minghui Chen , Lei An , Linxiu Zhang , Xiaozhou Xie , Kaiwei Wang , Tianqi Niu , Tianjun Ni , Qian Zhao , Dong Liu
Photocatalytic technology offers a promising approach to address environmental and health challenges posed by the food colorant new coccine (NC). Nb2O5 is a notable candidate due to its stability and environmental compatibility, but faces limitations such as limited active sites and rapid charge carrier recombination. In the present study, we report a novel Nb2O5 catalyst featuring a three-dimensional (3D) cross-linked architecture constructed from ultra-thin nanosheets, with a catalyst thickness of less than 2 nm. This innovative structure offers an eminent superficial surface area combined with a substantial abundance of active sites, making it an efficient photocatalyst for the degradation of NC. The Nb2O5 3D catalyst demonstrated a remarkable degradation rate of 90.1 % for NC within just 30 min, accompanied by a rate constant of 73.5 × 10−3 min−1. This performance significantly surpasses that of three alternative Nb2O5 catalysts with varying morphologies (nanorods, nanoparticles, and nanospheres), which show rate constants more than seven times lower. Furthermore, we explore the degradation pathways associated with NC and provide a thorough examination of the toxicity changes occurring in its by-products. This work presents a promising framework for the development of advanced catalysts capable of effectively degrading NC, thereby contributing to the advancement of environmentally sustainable practices in the management of food colorants.
{"title":"Ultra-thin Nb2O5 nanosheets construct 3D cross-linked architecture: Unraveling new coccine degradation pathways and toxicity changes","authors":"Minghui Chen , Lei An , Linxiu Zhang , Xiaozhou Xie , Kaiwei Wang , Tianqi Niu , Tianjun Ni , Qian Zhao , Dong Liu","doi":"10.1016/j.envres.2025.121571","DOIUrl":"10.1016/j.envres.2025.121571","url":null,"abstract":"<div><div>Photocatalytic technology offers a promising approach to address environmental and health challenges posed by the food colorant new coccine (NC). Nb<sub>2</sub>O<sub>5</sub> is a notable candidate due to its stability and environmental compatibility, but faces limitations such as limited active sites and rapid charge carrier recombination. In the present study, we report a novel Nb<sub>2</sub>O<sub>5</sub> catalyst featuring a three-dimensional (3D) cross-linked architecture constructed from ultra-thin nanosheets, with a catalyst thickness of less than 2 nm. This innovative structure offers an eminent superficial surface area combined with a substantial abundance of active sites, making it an efficient photocatalyst for the degradation of NC. The Nb<sub>2</sub>O<sub>5</sub> 3D catalyst demonstrated a remarkable degradation rate of 90.1 % for NC within just 30 min, accompanied by a rate constant of 73.5 × 10<sup>−3</sup> min<sup>−1</sup>. This performance significantly surpasses that of three alternative Nb<sub>2</sub>O<sub>5</sub> catalysts with varying morphologies (nanorods, nanoparticles, and nanospheres), which show rate constants more than seven times lower. Furthermore, we explore the degradation pathways associated with NC and provide a thorough examination of the toxicity changes occurring in its by-products. This work presents a promising framework for the development of advanced catalysts capable of effectively degrading NC, thereby contributing to the advancement of environmentally sustainable practices in the management of food colorants.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"277 ","pages":"Article 121571"},"PeriodicalIF":7.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shipping scrubber effluents, containing a cocktail of Polycyclic Aromatic Hydrocarbons (PAHs), show undisputed effects at single-species experiments while PAHs fate in the marine environment after effluent discharge is still investigated. Bacterioplankton, composed of abundant diverse taxa with xenobiotic-degrading capabilities, are the first responders to scrubber emissions and can affect PAHs impacts on marine life. This work aims to examine the fate of scrubber effluent PAHs and alkyl-PAHs in mesocosms of coastal bacterioplankton communities from a pristine (phytoplankton carbon biomass was 8.16 μg C L−1) and a eutrophic (105.35 μg C L−1) coastal site. High-throughput 16S rRNA metabarcoding revealed differential responses of the bacterioplankton linked to their initial community structure and population abundances. Taxa known for their PAHs-degrading capacity were retrieved, including the genera Roseobacter, Porticoccus, Marinomonas, Arcobacter, Lentibacter, Lacinutrix, Pseudospirillum, Glaciecola, Vibrio, Marivita, and Mycobacterium, and were found to have increased roles in shifted communities by increasing their relative abundances at least 5-fold in treatments with high scrubber effluent additions. Additionally, metagenomic analysis of shotgun sequencing, indicated an increase on the number of Clusters of Orthologous Genes (COGs) associated with pathways involved in PAHs degradation. Up to 198 more COGs involved in signal transduction were retrieved in scrubber effluent enriched mesocosms compared to controls, while 15, 86, and 136 more COGs associated with naphthalene, aromatic compound, and benzoate degradation, respectively, were detected in the pristine mesocosms after effluent additions. In both experiments, bacterioplankton responses towards xenobiotic degradation under increased PAHs and alkyl-PAHs were coupled with a drop in their concentrations, below the limit of detection by Day 3 of the experiment in the eutrophic community, and by half in Day 6 in the pristine environment's community. Our findings indicate that PAHs and alkyl-PAHs impacts can be rapidly reduced in natural systems of high bacterial activity.
{"title":"Do coastal bacterioplankton communities hold the molecular key to the rapid biodegradation of Polycyclic Aromatic Hydrocarbons (PAHs) from shipping scrubber effluent?","authors":"Savvas Genitsaris , Natassa Stefanidou , Polyxeni Kourkoutmani , Evangelia Michaloudi , Meritxell Gros , Elisa García-Gómez , Mira Petrović , Leonidas Ntziachristos , Maria Moustaka-Gouni","doi":"10.1016/j.envres.2025.121563","DOIUrl":"10.1016/j.envres.2025.121563","url":null,"abstract":"<div><div>Shipping scrubber effluents, containing a cocktail of Polycyclic Aromatic Hydrocarbons (PAHs), show undisputed effects at single-species experiments while PAHs fate in the marine environment after effluent discharge is still investigated. Bacterioplankton, composed of abundant diverse taxa with xenobiotic-degrading capabilities, are the first responders to scrubber emissions and can affect PAHs impacts on marine life. This work aims to examine the fate of scrubber effluent PAHs and alkyl-PAHs in mesocosms of coastal bacterioplankton communities from a pristine (phytoplankton carbon biomass was 8.16 μg C L<sup>−1</sup>) and a eutrophic (105.35 μg C L<sup>−1</sup>) coastal site. High-throughput 16S rRNA metabarcoding revealed differential responses of the bacterioplankton linked to their initial community structure and population abundances. Taxa known for their PAHs-degrading capacity were retrieved, including the genera <em>Roseobacter</em>, <em>Porticoccus</em>, <em>Marinomonas</em>, <em>Arcobacter</em>, <em>Lentibacter</em>, <em>Lacinutrix</em>, <em>Pseudospirillum</em>, <em>Glaciecola</em>, <em>Vibrio</em>, <em>Marivita</em>, and <em>Mycobacterium</em>, and were found to have increased roles in shifted communities by increasing their relative abundances at least 5-fold in treatments with high scrubber effluent additions. Additionally, metagenomic analysis of shotgun sequencing, indicated an increase on the number of Clusters of Orthologous Genes (COGs) associated with pathways involved in PAHs degradation. Up to 198 more COGs involved in signal transduction were retrieved in scrubber effluent enriched mesocosms compared to controls, while 15, 86, and 136 more COGs associated with naphthalene, aromatic compound, and benzoate degradation, respectively, were detected in the pristine mesocosms after effluent additions. In both experiments, bacterioplankton responses towards xenobiotic degradation under increased PAHs and alkyl-PAHs were coupled with a drop in their concentrations, below the limit of detection by Day 3 of the experiment in the eutrophic community, and by half in Day 6 in the pristine environment's community. Our findings indicate that PAHs and alkyl-PAHs impacts can be rapidly reduced in natural systems of high bacterial activity.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"277 ","pages":"Article 121563"},"PeriodicalIF":7.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Asthma is a chronic respiratory condition exacerbated by exposure to particulate air pollution. Smoke from landscape fires has been associated with increased mortality, asthma-related admissions to emergency and other hospital departments, and uptake in primary care services.
With climate change and more frequent landscape fires, healthcare systems must prepare for disaster, including surges in asthma medication demand. Past reviews have not resolved the direction and magnitude of the association between PM2.5 exposure during landscape fires and asthma medication use.
The aim of this review was to investigate the relationship between exposure to landscape fire smoke and the use of asthma medications.
We conducted a systematic review of PubMed, Scopus, and Web of Science, identifying peer-reviewed articles that examined asthma medication usage following environmental exposure to landscape fire smoke.
After a full-text review, we identified twelve articles, three from Canada, three from the USA and six from Australia, with five being retrospective cohort studies. Despite differences in study design, outcome and exposure assessment, the included studies reported a consistent increase in asthma medication use after exposure to wildfires. There is consistent evidence that exposure to wildfire smoke is associated with an increase in the use of reliever medications, particularly salbutamol. Increases in other asthma management medications were also consistently identified.
Increases in demand for asthma medications after exposure to wildfire smoke highlight the urgent need to address the growing frequency and intensity of wildfires driven by climate change.
{"title":"Asthma medication usage after environmental exposure to wildfire smoke: A systematic review","authors":"Cathy Etherington , Anne-Marie Rushby , Van Nguyen , Vanessa Thompson , Nina Lazarevic , Sotiris Vardoulakis","doi":"10.1016/j.envres.2025.121504","DOIUrl":"10.1016/j.envres.2025.121504","url":null,"abstract":"<div><div>Asthma is a chronic respiratory condition exacerbated by exposure to particulate air pollution. Smoke from landscape fires has been associated with increased mortality, asthma-related admissions to emergency and other hospital departments, and uptake in primary care services.</div><div>With climate change and more frequent landscape fires, healthcare systems must prepare for disaster, including surges in asthma medication demand. Past reviews have not resolved the direction and magnitude of the association between PM<sub>2.5</sub> exposure during landscape fires and asthma medication use.</div><div>The aim of this review was to investigate the relationship between exposure to landscape fire smoke and the use of asthma medications.</div><div>We conducted a systematic review of PubMed, Scopus, and Web of Science, identifying peer-reviewed articles that examined asthma medication usage following environmental exposure to landscape fire smoke.</div><div>After a full-text review, we identified twelve articles, three from Canada, three from the USA and six from Australia, with five being retrospective cohort studies. Despite differences in study design, outcome and exposure assessment, the included studies reported a consistent increase in asthma medication use after exposure to wildfires. There is consistent evidence that exposure to wildfire smoke is associated with an increase in the use of reliever medications, particularly salbutamol. Increases in other asthma management medications were also consistently identified.</div><div>Increases in demand for asthma medications after exposure to wildfire smoke highlight the urgent need to address the growing frequency and intensity of wildfires driven by climate change.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"277 ","pages":"Article 121504"},"PeriodicalIF":7.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-08DOI: 10.1016/j.envres.2025.121572
Ziyang Long , Haochun Zhang , Haifeng Shi , Yigang Chen
Developing highly efficient photocatalysts toward simultaneous removal of chromium (Cr (VI)) and norfloxacin (Nor) in refractory wastewater was still an arduous challenge. Herein, the concentration of oxygen vacancies (OVs) in BiOBr was adjusted by a temperature control method, which could facilitate the photocatalytic Nor removal and Cr (VI) reduction. The removal capacity over Vo-BOB-90 of the photocatalytic Cr (Ⅵ) reduction and Nor degradation were 95.44 and 32.47 times higher than those of pure BiOBr, respectively. In the mixed wastewater, the Vo-BOB-90 could degrade 90.15 % of Nor within 90 min and almost all of Cr (VI) within 20 min, which was 2.71 and 1.48 times higher than single Nor and Cr (VI) solution, respectively. The improved activity could be attributed to the improved light absorption capacity and enhanced the photogenerated charges separation efficiency. Additionally, SPV, PL, and TRPL tests exhibited that the existence of OVs could regulate the electronic structure to accelerate charge transfer. Furthermore, according to the experimental data of LC-MS test and the experiment on growth of Mung bean seeds, the toxicity of the mixed solution was reduced during the degradation process. This study put forward an in-depth understanding of the removal of pollutants in complex water environments using OVs regulation.
{"title":"Simultaneous removal of Cr (VI) and norfloxacin over BiOBr nanosheet with regulated oxygen vacancies: Intermediates and toxicity evaluation","authors":"Ziyang Long , Haochun Zhang , Haifeng Shi , Yigang Chen","doi":"10.1016/j.envres.2025.121572","DOIUrl":"10.1016/j.envres.2025.121572","url":null,"abstract":"<div><div>Developing highly efficient photocatalysts toward simultaneous removal of chromium (Cr (VI)) and norfloxacin (Nor) in refractory wastewater was still an arduous challenge. Herein, the concentration of oxygen vacancies (OVs) in BiOBr was adjusted by a temperature control method, which could facilitate the photocatalytic Nor removal and Cr (VI) reduction. The removal capacity over V<sub>o</sub>-BOB-90 of the photocatalytic Cr (Ⅵ) reduction and Nor degradation were 95.44 and 32.47 times higher than those of pure BiOBr, respectively. In the mixed wastewater, the V<sub>o</sub>-BOB-90 could degrade 90.15 % of Nor within 90 min and almost all of Cr (VI) within 20 min, which was 2.71 and 1.48 times higher than single Nor and Cr (VI) solution, respectively. The improved activity could be attributed to the improved light absorption capacity and enhanced the photogenerated charges separation efficiency. Additionally, SPV, PL, and TRPL tests exhibited that the existence of OVs could regulate the electronic structure to accelerate charge transfer. Furthermore, according to the experimental data of LC-MS test and the experiment on growth of Mung bean seeds, the toxicity of the mixed solution was reduced during the degradation process. This study put forward an in-depth understanding of the removal of pollutants in complex water environments using OVs regulation.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"277 ","pages":"Article 121572"},"PeriodicalIF":7.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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