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Atrazine exposure induces abnormal swimming behavior of tadpoles under light and/or dark stimuli: A comprehensive multi-omics insights from eyes and brain

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Aquatic Toxicology 2025年 284卷 107396页

作者： Yin, Jiawei Huang, Minyi Zeng, Zijie Zhang, Yuhao Tan, Zikang Xia, Yongqiang College of Agriculture and Biotechnology Hunan University of Humanities Science and Technology Hunan Loudi 417000 China Key Laboratory of Development Utilization Quality and Safety Control of Characteristic Agricultural Resources in Central Hunan Province Hunan Loudi 417000 China

Atrazine, a widely used pesticide, can damage organs and affect the respond ability of aquatic animals to environmental stimuli. To explore the amphibian response to light and/or dark stimuli following pesticide exposure, a comparative analysis was conducted on the swimming behavior of Pelophylax nigromaculatus tadpoles (Gs 8 - Gs 36, from fertilised egg to forelimb appearance) following a 60-day exposure period to atrazine. Additionally, an examination of ocular structures, eye metabolism, and brain transcription was undertaken across the treatment groups. This comprehensive approach aimed to elucidate how pollutants disrupt an individual's response to light-dark stimuli by interfering with both the light-sensing organs (eyes) and the signal-processing organ (brain). Under light conditions, atrazine exposure significantly increased the total movement distance of tadpoles. In contrast, under dark conditions, atrazine induced more pronounced hyperactivity, with significant elevations in moving distance, maximum acceleration, average activity, and moving frequency. Additionally, under light/dark alternating conditions, atrazine specifically enhanced moving frequency compared to control groups. Anatomical analysis of the eyes showed that atrazine exposure led to a notable increase in the thickness of the retinal pigmented epithelium (RPE), photoreceptor layer (PL), and inner plexiform layer (IPL) in tadpoles, while significantly decreasing the thickness of the inner nuclear layer (INL), outer nuclear layer (ONL), and ganglion cell layer (GCL). Metabolic analysis of the eyes indicated significant alterations in serotonergic synapse, arachidonic acid metabolism, and linoleic acid metabolism pathways due to atrazine exposure. Additionally, transcriptomic analysis of brain tissue revealed altered neutrophil activation, granulocyte activation, and leukocyte migration pathways, accompanied by upregulated gene expression of TNIP1, HAMP, CORO1A, LTA4H, RARRES2, and C1QA. The a

关键词： Metabolism Movement Pesticides Transcription

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Sodium alginate-mediated engineering of 3D-MnO2 architectures for efficient room-temperature formaldehyde catalytic decomposition

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Separation and Purification technology 2025年 370卷

作者： Cheng, Zeyi Lu, Jingling Zhang, Huiyu Liu, Fang Ran, Wang Xu, Wenxuan Yu, Tao Chen, Shouzhi Rong, Shaopeng Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China China Testing & Certification International Group Co. Ltd. Beijing100024 China Beijing Chehejia Automobile Technology Co. Ltd Beijing101399 China

Catalytic decomposition of formaldehyde at ambient temperature represents a promising technique for eliminating indoor formaldehyde pollution and improving indoor air quality. The employment of three-dimensional (3D) structured catalysts to facilitate this process is a topic worthy of investigation thanks to its rapid mass transfer and highly exposed active sites. Herein, two kinds of 3D-structured MnO2 were fabricated with the assistance of exogenous assembly force provided by sodium alginate (SA). In comparison to pure SA-assembled 3D catalyst and non-3D-structured MnO2 powder, 3D-MnO2 catalysts demonstrate unparalleled efficacy in HCHO elimination. Due to the porous 3D network with large spatial volume, 3D-MnO2 catalysts offer significant enhancements in mass transfer and the exposure of active sites, allowing for not only greater adsorption of HCHO, but also generation of additional active oxygen species to further oxidize HCHO. Surface –OH groups as the key factor affecting the catalytic activity at ambient temperature. The content and regeneration ability determine the performance of the catalyst at low temperature. 3D-δ-MnO2 demonstrates a distinctive capacity for the adsorption and activation of the water molecules, which further supplements the hydroxyl groups consumed in the decomposition of HCHO. This work proposes a simple method for the preparation of 3D catalysts and elucidates the underlying mechanisms responsible for their superior performance, thereby providing guidance for the development of indoor air purification materials. © 2025 Elsevier B.V.

关键词： Indoor air pollution

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Orientation construction and comparison of mercury removal sites by physical and chemical adsorption on cotton stalk biochar

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Fuel 2025年 398卷

作者： Li, Guoliang Wang, Shuxiao Wu, Qingru Yue, Tao Gao, Jiajia Tong, Yali Zhang, Mingyu Zhang, Lin Zhang, Chenyang Xie, Sizhe School of Energy and Environmental Engineering University of Science and Technology Beijing Beijing100083 China State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China Changsha County Urban Management Bureau Hunan Province Changsha410100 China

The capture of elemental mercury (Hg0) is the crucial step for synergetic control of mercury emission via dust removal equipment. Micropore structure, oxygen-containing groups and adding active elements are three key factors in the biochars activation for mercury capture. Previous studies usually focused on single modification factor. This study aims to evaluate and contrast the influence of the three key factors on the mercury capture of biochars. Physical activation (microwave and steam), H2O2 modification and NH4Cl impregnation were used to directionally develop pore structure, form new oxygen-containing groups and introduce halogen active sites. The testing results showed that physical activation causes distinct increase in the Vmicro ratio by 420 % yet just modest increase in the highest mercury removal efficiency (η) of C6W by only 43.0 %. The 30 % H2O2 modification and 5 % NH4Cl impregnation distinctly increased η by 82.6 % and 116.2 %, respectively. Moreover, synergetic activation of H2O2 modification with physical activation and that of NH4Cl impregnation with physical activation further increased η by 159.5 % and 180.6 %, respectively. The pore structure development was not the key factor in mercury removal, yet it improved the chemical modification effectiveness. Physicochemical characterization methods, molecular adsorption kinetic models and mercury desorption energy calculation were used to analyze the mercury capture active sites and investigate the mercury adsorption mechanism. The H2O2 modification and NH4Cl impregnation formed chemisorption sites of C-O, C=O and C-Cl groups. The mercury desorption energy increased from 32.2-33.0 kJ∙mol−1 of physisorption to 60.2–70.7 kJ∙mol−1 of chemisorption. This paper provides guides for future preparation of highly effective mercury removal sorbents. © 2025

关键词： Dust control

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Microbially-driven phosphorus cycling and its coupling mechanisms with nitrogen cycling in mangrove sediments

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Science of the Total Environment 2025年 958卷 178118页

作者： Liu, Fei Zeng, Jiaxiong Ding, Jijuan Wang, Cheng He, Zhili Liu, Zhiwei Shu, Longfei School of Life Sciences Jiaying University Meizhou514015 China Conservation and Utilization Laboratory of Mountain Characteristic Resources in Guangdong Province Meizhou514015 China School of Environmental Science and Engineering Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology State Key Laboratory for Biocontrol Sun Yat-sen University Guangzhou510275 China Zhuhai509082 China

The phosphorus (P) cycle plays a crucial role in the biogeochemical cycling of mangrove sediments. However, the diversity of microbially-driven P-cycling and its coupling with nitrogen (N)-cycling remain poorly understood. In this study, we used metagenomic approaches to investigate microbial P-cycling and its potential interactions with N-cycling in mangrove sediments. Our results revealed that pH, total carbon, and total nitrogen were key environmental factors influencing the diversity of P-cycling microbial communities. Phosphorus metabolic pathways differed among mangrove sediment depths. In surface sediments (0–5 cm), microbial communities primarily acquired readily available inorganic phosphorus, whereas, in deeper sediments (>60 cm), they hydrolyzed more persistent triphosphates, reabsorbed nucleotides, and sourced free phosphate, reflecting a shift in phosphorus transport modes. We also identified glutamate metabolism as a potential pathway linking P-cycling with N-cycling, with these functions co-occurring in both contigs and genomes. Additionally, the diversity of microbial communities associated with the P-cycling increased with sediment depth, suggesting that microbially-driven P-cycling diversifies as depth increases. This study provides new insights into P-cycling and its potential coupling with N-cycling through glutamate metabolism, its coupling with N-cycling through glutamate metabolism. © 2024 Elsevier B.V.

关键词： Abiotic

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Cysteine and dialysis mediated inhibition of dynamic changes in glycosylated egg white protein during storage

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Food Chemistry 2025年 480卷 143819页

作者： Guo, Lulu Zhang, Wanqiu Zhang, Fan Hu, Shende Zhao, Qianwen Chang, Cuihua Li, Junhua Huang, Zijian Gu, Luping Yang, Yanjun Su, Yujie State Key Laboratory of Food Science and Resources School of Food Science and Technology Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province Jiangnan University Jiangsu Wuxi214122 China College of Bioscience and Biotechnology Hunan Agricultural University Hunan Changsha410128 China Hunan Jiapin Jiawei Technology Development Group Co. LTD Hunan Engineering & Technology Research Center for Food Flavors and Flavorings Hunan Jinshi415400 China

Glycosylation is commonly used to improve the solubility and functionality of egg white protein (EWP), but glycosylated EWP is prone to quality deterioration during storage. To enhance its storage stability, cysteine (Cys) addition and dialysis-based desugar treatment were applied to xylo-oligosaccharide (XOS) glycosylated EWP (GEW) in accelerated storage examinations. Both Cys addition and dialysis minimized changes in soluble protein content, color difference, and particle size during storage. Further, they inhibited the Maillard reaction and the accumulation of its intermediate products. Cys addition effectively maintained protein structures and prevented protein crosslinking. However, dialysis lost the filling and protective effect of free sugars, lowering the denaturation temperature of ovalbumin. Cys and dialysis effectively maintained the stability of emulsifying properties, while Cys better preserved gelation. Overall, both Cys addition and dialysis markedly enhanced the storage stability of GEW, with Cys proving to be more effective. © 2025 Elsevier Ltd

关键词： Cysteine Dialysis Egg white protein Glycosylation Maillard reaction Storage stability

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Reversing inhibition to promotion in phenol-ammonium metabolism via algal-microbial fuel cell: Mechanisms of phenol-ammonium interaction and synergistic removal

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Journal of Hazardous Materials 2025年 493卷 138417页

作者： Liu, Yaqi Zheng, Mengqi Lv, Longyi Chen, Guowei Wang, Chengye Hu, Zhenhu Feng, Jingwei Xie, Binghan Han, Hongjun Wang, Wei Department of Municipal Engineering School of Civil Engineering Hefei University of Technology Hefei230009 China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin150090 China Anhui Province Key Laboratory of Industrial Wastewater and Environmental Treatment Hefei230024 China Anhui Provincial Engineering Laboratory for Rural Water Environment and Resources Hefei230009 China Tianjin Key Laboratory of Clean Energy and Pollution Control School of Energy and Environmental Engineering Hebei University of Technology Tianjin300401 China

Addressing the challenge of metabolic inhibition between phenol and ammonium in coal gasification wastewater (CGW), this study introduced a novel algal-microbial fuel cell (AMFC). It combined the advantages of electroactive bacteria and Synechocystis to achieve synergistic metabolism, establishing a cooperative mechanism for pollutant separation and enhanced transformation to achieve the mutual promotion of phenol and ammonium removal. Remarkably, raising phenol to 1500 mg COD/L boosted ammonium removal by 31.51 % in AMFC, due to a consistently higher potential difference than the control, which enhanced extracellular electron transfer (EET) via conductive nanowire and drove ammonium migration. Similarly, elevating ammonium concentration to 150 mg/L resulted in an 11.79 % increase in phenol removal efficiency, driven by superior solution conductivity and EET, as well as more electron acceptors (oxygen) from the algal cathode. This system challenged the conventional understanding of the antagonistic relationship between phenol and ammonium. Under high phenol conditions, the electroactive bacteria Clostridium sensu stricto 1 and Acinetobacter, Perlucidibaca formed a synergistic metabolic network, whereas Zoogloea, Ideonella, and other phenol-degrading bacteria were significantly enriched in high ammonium environments. The AMFC represented a breakthrough in reversing the metabolic inhibition between phenol and ammonium, providing a novel and energy-efficient strategy for treating complex industrial wastewater. © 2025 Elsevier B.V.

关键词： Microbial fuel cells

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Recovery of nitrogen and phosphorus from water by ball-milled biochar composite supported by acid mine drainage sludge

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Journal of Industrial and Engineering Chemistry 2025年

作者： Ma, Zijie Zhao, Zhipeng Pan, Yuegui Lei, Wei Faheem, Muhammad Feng, Qianwei Zhang, Xueyang Wang, Bing College of Resources and Environmental Engineering Guizhou University Guiyang550025 China Guizhou Institute of Water Resource Science Guiyang550002 China Department of Civil Infrastructure and Environmental Engineering Khalifa University of Science and Technology Abu Dhabi127788 United Arab Emirates Key Laboratory of Karst Georesources and Environment Ministry of Education Guiyang550025 China Jiangsu Key Laboratory of Industrial Pollution Control and Resource Reuse School of Environmental Engineering Xuzhou University of Technology Xuzhou221018 China

Excessive nitrogen and phosphorus can lead to the eutrophication of water. Biochar, derived from agricultural and forestry waste, is effective for water eutrophication control, but its adsorption performance requires enhancement through process optimization. To explore efficient methods for the recovery of nitrogen and phosphorus, pinecone biochar was mixed with acidic mine drainage (AMD) sludge through ball milling to produce modified pinecone biochar (MPB). Batch adsorption experiments and SEM-EDS, FTIR, and XRD tests were employed to investigate co-adsorption performance and mechanisms of MPB for ammonium and phosphate. The results showed that low-temperature pyrolysis (300 °C) facilitated the adsorption of ammonium and phosphate by MPB. The adsorption process followed the Elovich model, suggesting that heterogeneous chemisorption was the primary mechanism. Ammonium adsorption followed the Langmuir model, and phosphate adsorption followed the Freundlich model. The recovery rates for ammonium and phosphate by MPB reached 29.58 % and 96.19 %, respectively. Site energy analysis confirmed that ion exchange and surface precipitation were the main adsorption mechanisms. The presence of Fe3+ and Al3+ in AMD sludge facilitated phosphate precipitation, while the increased functional group content in MPB enhanced ammonium adsorption. This study provides a potential pathway for the sustainable use of forestry waste and industrial waste as well as for nitrogen and phosphorus recovery. © 2025 The Korean Society of Industrial and Engineering Chemistry

关键词： Eutrophication

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Cysteine and Dialysis Mediated Inhibition of Dynamic Changes in Glycosylated Egg White Protein During Storage

SSRN

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SSRN 2025年

作者： Guo, Lulu Zhang, Wanqiu Zhang, Fan Hu, Shende Zhao, Qianwen Chang, Cuihua Li, Junhua Zhu, Min Gu, Luping Yang, Yanjun Su, Yujie Huang, Zijian State Key Laboratory of Food Science and Resources School of Food Science and Technology Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province Jiangnan University Jiangsu Wuxi214122 China College of Bioscience and Biotechnology Hunan Agricultural University Hunan Changsha410128 China Hunan Jiapin Jiawei Technology Development Group Co. LTD Hunan Engineering & Technology Research Center for Food Flavors and Flavorings Hunan Jinshi415400 China

Glycosylation is commonly used to improve the solubility and functionality of egg white protein (EWP), but glycosylated EWP is prone to quality deterioration during storage. To enhance its storage stability, cysteine (Cys) addition and dialysis desugar treatment were applied to xylo-oligosaccharide (XOS) glycosylated EWP (GEW) in accelerated storage examinations. Both Cys addition and dialysis minimized changes in soluble protein content, color difference, and particle size during storage. Further, they inhibited the Maillard reaction and the accumulation of its intermediate products. Cys addition effectively maintained protein structures and prevented protein crosslinking. However, dialysis lost the filling and protective effect of free sugars, lowering the denaturation temperature of ovalbumin. Cys and dialysis effectively maintained the stability of emulsifying properties, while cysteine better preserved gelation. Overall, both Cys addition and dialysis effectively enhanced the storage stability of GEW, with Cys proving to be more effective. © 2025, The Authors. All rights reserved.

关键词： Reaction intermediates

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Interactions of biomass constituents and the effect on the hydrogen storage molecules during fast pyrolysis

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Energy 2025年 328卷

作者： Xie, Wensheng Ullah, Fahim Lu, Yongming Yao, Yuhang Zhang, Ye Shui Zhang, Yutao Ji, Guozhao Li, Aimin Key Laboratory of Industrial Ecology and Environmental Engineering School of Environmental Science and Technology Dalian University of Technology Dalian116000 China School of Environment Henan Normal University Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control Ministry of Education Henan Xinxiang453007 China School of Engineering University of Aberdeen AberdeenAB24 3UE United Kingdom Zhejiang Province Key Laboratory of Soil Contamination Bioremediation School of Environment and Resources Zhejiang Agriculture and Forestry University Hangzhou311300 China

Biomass pyrolysis oils are anticipated to serve as a source of bio-based platform chemicals and hydrogen storage molecules, primarily from the decomposition of holocellulose (cellulose and hemicellulose). This study examined the influence of component interactions among the thermal behavior, product distribution, and gas composition of the samples. The results show that in the cellulose and hemicellulose mixtures, the increase in hemicellulose promotes gas and solid production while inhibiting oil yield. However, the increasing hemicellulose reduced the production of aldehydes, acids, and ketones (a result corroborated by infrared characterization), including hydrogen storage molecules, with the most pronounced promotion occurring only in samples with cellulose to hemicellulose equivalence ratio of 2:1. Furthermore, lignin was added to samples with a cellulose-to-hemicellulose ratio of 1:1. The results demonstrated that the increasing lignin also promoted gas and solid production while inhibiting oil yield. Notably, even small amounts of lignin significantly increase the formation of small and hydrogen storage molecules by activating holocellulose through lignin side chain groups. However, a further increase in lignin also reduced the generation of hydrogen storage molecules. This study offers valuable insights for selecting proper raw materials for the generation of platform chemicals and hydrogen storage molecules. © 2025 Elsevier Ltd

关键词： Cracking (chemical)

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An XGBoost-SHAP framework for identifying key drivers of urban flooding and developing targeted mitigation strategies

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Ecological Indicators 2025年 175卷

作者： Fu, Xiaoping Wang, Mo Zhang, Dongqing Chen, Furong Peng, Xiaotao Wang, Lie Tan, Soon Keat College of Architecture and Urban Planning Guangzhou University Guangzhou510006 China Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control School of Environmental Science and Engineering Guangdong University of Petrochemical Technology Guangdong Maoming525000 China Department of Construction Economics and Management Guangzhou Urban Construction Vocational School Guangzhou510006 China Key Laboratory of Natural Resources Monitoring in Tropical and Subtropical Area of South China Ministry of Natural Resources Guangzhou510663 China Art School Hunan University of Information Technology Hunan Changsha410151 China School of Civil and Environmental Engineering Nanyang Technological University Singapore639798 Singapore

Urban flooding is a multifaceted and severe issue, exacerbated by global climate change and urban expansion. Hence, it is imperative to investigate effective strategies for mitigating the urban flooding risk. This research proposes an innovative framework to recognize the driving factors and evaluate the impact of land cover changes on urban flooding, using a machine learning simulation model in the Guangdong-Hong Kong-Macao Greater Bay Area (GBA). The results indicated that approximately 19.8% of the investigated areas are exposed to high-risk, predominantly in the densely populated urban center of the GBA. In terms of identifying driving factors, impervious surface percentage (ISP) and fractional vegetation cover (FVC) are the primary driving factors of urban flooding. Converting impervious surface (IS) into green space (GS), the areas exposed at medium- and high-risk of flooding in the urban–rural fringe were significantly reduced, while no significant alterations were observed in the areas at very high-risk induced by urban flooding in the central city. By contrast, converting GS into IS significantly increased the areas exposed to very high-risk in the central city. In addition, we proposed optimization strategies for effectively mitigating urban flooding, based on the distribution and regional characteristics of flooding in the central city, rural–urban fringe and rural areas, respectively. This study provides urban planners and designers with valuable insights into how land cover management and green infrastructure can be leveraged to address urban flooding, thus offering practical guidance for sustainable urban development in rapidly urbanizing regions. © 2025

关键词： Urban growth

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