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ACS ES&T Air 2025年第2期2卷 151-161页

作者： Tie Zheng Yifan Wen Sheng Xiang Pan Yang Xuan Zheng Yan You Shaojun Zhang Ye Wu School of Environment State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua University Beijing 100084 China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China State Key Laboratory of Pollution Control and Resource Reuse Tongji University Shanghai 200092 China；College of Environmental Science and Engineering Tongji University Shanghai 200092 China College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 China Macao Environmental Research Institute Macau University of Science and Technology Macau 999078 China；National Observation and Research Station of Coastal Ecological Environments in Macao Macao Environmental Research Institute Macau University of Science and Technology Macao 999078 China School of Environment State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua University Beijing 100084 China；State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084 China；Beijing Laboratory of Environmental Frontier Technologies Beijing 100084 China

The advent of large-scale mobile monitoring using fast-response instruments has enabled hyperlocal mapping (≤100 m) of traffic-related air pollution (TRAP), with important implications for air quality management. However, most related studies have been confined within small areas due to the high cost and labor intensity. This study pioneers a cost-effective TRAP mapping method by incorporating large-scale mobile monitoring and land-use machine learning (LUML). Here, over 4.6 million 1 Hz high-frequency measurements (∼1300 h) were collected on a part of major roadways in the Chinese megacity of Shenzhen. Unmeasured locations were estimated by LUML models to reduce measurement costs and labor intensity. Various ML algorithms and varying spatial aggregation segment lengths were incorporated to optimize the model performance. Hyperlocal maps of NO, NO2, and PM2.5were predicted across the entire road network covering over 1700 km2. Based on our results, LU-RF (random forest) for mapping NO and NO2and LU-GBM (Gradient Boosting Machine) for mapping PM2.5, demonstrated superior performance. Deep learning models, in contrast, did not yield comparable results. Finer partitioning of road segments (≤100 m) improved NO prediction performance, but worsened that for NO2and PM2.5. By deployment of optimal ML algorithms and segment lengths, the TRAP mapping accuracy increased by 20–80% compared to conventional land-use regression models. This study provides a promising and cost-effective approach to hyperlocal air pollution mapping and management in cities worldwide.

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Optimization of water-urban-agricultural-ecological land use pattern:A case study of Guanzhong Basin in the southern Loess Plateau of Shaanxi Province,China

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China Geology 2024年第3期7卷 480-493页

作者： Sai Wang Bin Wu Hai-xue Li Min-min Zhao Lei Yuan Xi Wu Tao Ma Fu-cheng Li Shuang-bao Han Center for Hydrogeology and Environmental Geology Survey China Geological SurveyMinistry of Natural ResourcesTianjin 300304China Center for Groundwater Exploration and Development Engineering Research China Geological SurveyMinistry of Natural ResourcesTianjin 300304China School of Environmental Studies China University of GeosciencesWuhan430078China State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic ScienceChina University of GeosciencesWuhan430078China

Extensive land use will cause many environmental *** is an urgent task to improve land use efficiency and optimize land use *** recent years,due to the flow decrease,the Guanzhong Basin in Shaanxi Province is confronted with the problem of insufficient water resources *** on the Coupled Ground-Water and Surface-Water Flow Model(GSFLOW),this paper evaluates the response of water resources in the basin to changes in land use patterns,optimizes the land use pattern,improves the ecological and economic benefits,and the efficiency of various spatial development,providing a reference for ecological protection and high-quality development of the Yellow River *** research shows that the land use pattern in the Guanzhong Basin should be further *** the condition of considering ecological and economic development,the percentage change of the optimum area of farmland,forest,grassland,water area,and urban area compared with the current land use area ratio is+2.3,+2.4,-6.1,+0.2,and+1.6,*** economic and ecological value of land increases by14.1%and 3.1%,respectively,and the number of water resources can increase by 2.5%.

关键词： Coupled Ground-Water and Surface-Water Flow Model(GSFLOW) Land use patterns Water resources optimization Ecological and economic benefits Coupling model Hydrological environmental engineering Guanzhong Basin Southern Loess Plateau Yellow River basin

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Cadmium immobilization by mercapto-palygorskite in alkaline soil: Impacts on soil microbial communities and wheat rhizosphere metabolism

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Science of the Total Environment 2024年 955卷 176734页

作者： Ma, Wenyan Ge, Chenghao Sun, Yuebing Wang, Min Zhou, Dongmei State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China Agro-Environmental Protection Institute Ministry of Agriculture and Rural Affairs Tianjin300191 China

Weakly alkaline cadmium (Cd) contaminated soil in China has aroused great concern regarding its impact on food security and human health. Mercapto-modified palygorskite (MP) has exhibited good potential to minimize Cd accumulation in wheat, it is imperative to understand the underlying mechanisms within the soil-wheat-microbial system for sustainable development of agrochemicals. This study evaluated the effects of various MP dosages on soil Cd bioavailability, rhizosphere metabolomics, microbial community structure and wheat growth. The results indicated that MP (0.05–0.2 %) application significantly reduced Cd accumulation in wheat grains by 59.0–83.2 % (p © 2024 Elsevier B.V.

关键词： Agricultural food safety Cadmium Mercapto-palygorskite Metabolism Microbial community

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Cadmium bioavailability in market nori and kelp: A comparison with rice and mechanisms underlying reduction in rice cadmium bioavailability with nori and kelp consumption

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Science of the Total Environment 2024年 956卷 177329页

作者： Duan, Xu Zhou, Lei Chen, Sheng-Zhi Lin, Xin-Ying Xue, Rong-Yue Xue, Xi-Mei Zhou, Dongmei Li, Hong-Bo State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China Key Laboratory of Urban Environment and Health Institute of Urban Environment Chinese Academy of Sciences 1799 Jimei Road Xiamen361021 China

Seaweeds, despite being rich in beneficial substances, also contain toxic metals such as cadmium (Cd), leading to ongoing debates about their health impacts. This study assessed the risk of Cd exposure from consuming nori and kelp, as well as the potential benefits of these seaweeds in mitigating Cd exposure from rice, using mouse bioassays. The results indicated that all test nori samples (n = 35) had Cd concentration exceeding 1.2 μg g−1, while the majority of kelp samples (18 out of 24) contained −1. When mixed with Cd-free rice at a 5 % (w/w) ratio and administered to mice for 14 days, kelp samples with 0.36 and 0.50 μg g−1 Cd (Kelp-0.36 and Kelp-0.50) did not result in Cd accumulation in the liver or kidneys. Conversely, nori samples with 1.30 and 1.67 μg g−1 Cd (Nori-1.30 and Nori-1.67) led to significant Cd accumulation, highlighting the exposure risk associated with nori. This risk was further emphasized by a doubling of Cd accumulation in the tissues of mice fed sushi containing nori compared to those fed sushi without nori. However, the Cd accumulation from consuming Nori-1.30 and Nori-1.67 was comparable to that from rice with a lower Cd concentration (0.93 μg g−1), suggesting a lower bioavailability of Cd in nori than in rice. More promisingly, when consumed with Cd-containing rice at a 5 % (w/w) ratio, Kelp-0.36, Kelp-0.50, Nori-1.30, and Nori-1.67 reduced the accumulation of rice Cd in mouse tissues by 25.8 %–48.1 %, primarily by increasing the relative abundances of Bacteroides in the gut of mice and enhancing fecal output, which in turn increased the excretion of rice-derived Cd by 1.46–1.54 times. These findings suggest that kelp consumption may be relatively safe, while caution is advised for nori. Moreover, regular consumption of specific amounts of seaweeds, particularly kelp, could help to reduce Cd exposure from rice. © 2024 Elsevier B.V.

关键词： Mammals

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Prediction of as and Cd Dissolution in Various Soils Under Flooding Condition

SSRN

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SSRN 2024年

作者： Ge, Jingwen Wu, Song Wu, Haotian Lin, Jianyu Cai, Yijun Zhou, Dongmei Gu, Xueyuan State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing China Institute of Soil Science Chinese Academy of Sciences Nanjing China

Although the mobility of arsenic (As) and cadmium (Cd) in soils during the flooding-drainage process has been intensively studied, prediction their dissolution among various soils still remains a challenge. After comprehensively monitoring multiple parameters related to As and Cd dissolution in 8 soils for a 60-day anaerobic incubation, the redundancy analysis (RDA) and structural equation model (SEM) were employed to identify the key factors and influencing pathways controlling the dynamic release of As and Cd. Results showed that pH alone explained 90.5% Cd dissolution, while the dissolved-Fe(II) and 5M-HCl extractable Fe(II) jointly only explained 50.6% As dissolution. After data normalization, the ratio of Fe(II) to 5M-HCl extracted total Fe (i.e. [[EQUATION]]/[[EQUATION]]) significantly improved the correlation to R2 = 0.824 (p © 2024, The Authors. All rights reserved.

关键词： Dissolution

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Advance of self-cleaning separation membranes for oil-containing wastewater treatment

Environmental Functional Materials

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Environmental Functional Materials 2024年第1期3卷 72-93页

作者： Xinchun Lu Liguo Shen Cheng Chen Wei Yu Boya Wang Ning Kong Qianqian Zeng Siyuan Chen Xuezheng Huang Ying Wang Hongjun Lin College of Geography and Environmental Sciences Zhejiang Normal University Jinhua 321004 PR China Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology Henan University of Urban Construction Pingdingshan 467000 PR China State Key Laboratory of Pollution Control and Resources Reuse (Tongji University) College of Environmental Science and Engineering Tongji University Shanghai 200092 PR China

The formidable challenge of membrane fouling by high-viscosity oils remains a primary impediment to the sustainable application of separation membranes in treating oil-contaminated wastewater. Consequently, there is an imperative for the development of oil-contaminated wastewater treatment membranes endowed with self-cleansing capabilities. The current review aims to delineate the landscape of self-cleansing membranes tailored for the treatment of oil-contaminated wastewater. Embarking from the foundational theories and benchmarks of self-cleansing, the self-cleansing functionalities were classified into active and passive modalities. We encapsulate the strides made in research, encompassing domains such as super-wettable surfaces, synchronously filtered self-cleansing, and post-filtration high-efficiency self-cleansing, while concurrently identifying extant constraints and prospective trajectories. By meticulously categorizing and dissecting self-cleansing functionalities, the aim of this work is delving into the fundamental tenets of self-cleansing within membranes intended for treating oil-contaminated wastewater, and furnishing guidance for the design and advancement of self-cleansing functionalities in oil-water separation membranes.

关键词： Membrane fouling Oil/water separation Self-cleaning Superwetting surfaces Functional material

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The Effects of Cu-Phenanthrene Co-Contamination on Adsorption-Desorption Behaviors of Phenanthrene in Soils

SSRN

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SSRN 2023年

作者： Li, Mengting Chen, Chuze Zhang, Wei Cao, Liu Zhang, Xueqi Wang, Yuting Xian, Qiming State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China Nankai University China

Polycyclic aromatic hydrocarbons (PAHs) are persistent organic pollutants (POPs) in the environment, which are teratogenic, carcinogenic, and mutagenic. Co-contamination of PAHs and heavy metal commonly exists in soil. In this study, 20 types of soils with different properties in China were collected and comprehensively characterized. Phenanthrene (Phe) and Cu (II) were selected as a representative of PAHs and heavy metals, respectively. The adsorption-desorption behaviors of Phe under Phe contamination and Cu (II)-Phe co-contamination in 20 types of soils were studied. The adsorption-desorption behaviors of Phe in 20 types of soils varied greatly, and adsorption of Phe in the soils followed both linear partitioning and nonlinear surface adsorption. Soil organic matter (SOM) plays an important role in the adsorption-desorption behavior of Phe. When the concentration of Phe were ＞ 50 μg/L, soft carbon (SC) fraction of SOM not black carbon (BC) contributed more to the adsorption of Phe. Soil dissolved organic matter (DOM), especially fulvic acid and humic acid fractions, contributes to the adsorption of Phe. Under the effect of Cu (II) (60 mg/L in solution), the adsorption capacity of soil for Phe increased, which possibly resulted from lowered pH, the existence of the cation-π bonding and the "bonding bridge" effect. The systematic investigation of adsorption-desorption behaviors of Phe in soils under heavy metal-PAHs co-contamination will provide a scientific basis for the calculation of soil environmental capacity in the future. © 2023, The Authors. All rights reserved.

关键词： Soils

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Recent advances in carbon-supported non-precious metal singleatom catalysts for energy conversion electrocatalysis

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National Science Open 2023年第2期2卷 115-160页

作者： Li-Xia Liu Yangyang Ding Linan Zhu Jin-Cheng Li Huitong Du Xiang Li Zhaoyuan Lyu Dan Du Fuqiang Liu Yuanyuan Wang Wenlei Zhu Yuehe Lin State Key Laboratory of Pollution Control and Resource Reuse State Key Laboratory of Analytical Chemistry for Life Sciencethe Frontiers Science Center for Critical Earth Material CyclingSchool of the EnvironmentSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China School of Mechanical and Materials Engineering Washington State UniversityPullman WA 99164USA Faculty of Chemical Engineering Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus MaterialsKunming University of Science and TechnologyKunming 650500China

Non-precious metal single-atom catalysts(NPM-SACs)with unique electronic structures and coordination environments have gained much attention in electrocatalysis owing to their low cost,high atomic utilization,and high ***-SACs on carbon support(NPM-SACs/CS)are promising because of the carbon substrate with a large surface area,excellent electrical conductivity,and high chemical *** review provides an overview of recent developments in NPM-SACs/CS for the electrocatalytic ***,the state-of-the-art synthesis methods and advanced characterization techniques of NPM-SACs/CS are discussed in ***,the structural adjustment strategy of NPM-SACs/CS for optimizing electrocatalytic performance is introduced ***,we provide a comprehensive summary of recent advances in developing NPM-SACs/CS for important electrochemical reactions,including carbon dioxide reduction reaction,hydrogen evolution reaction,oxygen evolution reaction,oxygen reduction reaction,and nitrogen reduction *** the end,the existing challenges and future opportunities of NPM-SACs/CS in the electrocatalytic field are highlighted.

关键词： single-atom catalysts non-precious metal electrocatalytic reaction carbon-supported

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Biological Renewable Cellulose-Templated Zn_1-XCu_XO/Ag₂O Nanocomposite Photocatalysts for the Degradation of Methylene Blue

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ACS Omega 2024年第12期9卷 13714-13727页

作者： Lemecho, Biruktait Ayele Andoshe, Dinsefa Mensur Gultom, Noto Susanto Abdullah, Hairus Kuo, Dong-Hau Chen, Xiaoyun Desissa, Temesgen D. Wondimageng, Demeke Tesfaye Wu, Yi-Nan Zelekew, Osman Ahmed Department of Materials Science and Engineering Adama Science and Technology University Adama 1888 Ethiopia Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei 10607 Taiwan College of Materials Engineering Fujian Agriculture and Forestry University Fuzhou 350002 China College of Environmental Science and Engineering State Key Laboratory of Pollution Control and Resource Reuse Tongji University 1239 Siping Rd. Shanghai 200092 China Shanghai Institute of Pollution Control and Ecological Security 1239 Siping Road Shanghai 200092 China

Herein, Cellulose-templated Zn1-XCuXO/Ag2O nanocomposites were prepared using biological renewable cellulose extracted from water hyacinth (Eichhornia crassipes). Cellulose-templated Cu-doped ZnO catalysts with differ... 详细信息

Herein, Cellulose-templated Zn_1-XCu_XO/Ag₂O nanocomposites were prepared using biological renewable cellulose extracted from water hyacinth (Eichhornia crassipes). Cellulose-templated Cu-doped ZnO catalysts with different amounts of Cu as the dopants (1, 2, 3, and 4%) were prepared and denoted CZ-1, CZ-2, CZ-3, and CZ-4, respectively, for simplicity. The prepared catalysts were tested for the degradation of methylene blue (MB), and 2% Cu-doped ZnO (CZ-2) showed the best catalytic performance (82%), while the pure ZnO, CZ-1, CZ-3, and CZ-4 catalysts exhibited MB dye degradation efficiencies of 54, 63, 65, and 60%, respectively. The best catalyst (CZ-2) was chosen to further improve the degradation efficiency. Different amounts of AgNO₃ (10, 15, 30, and 45 mg) were used for the deposition of Ag₂O on the surface of CZ-2 and denoted CZA-10, CZA-15, CZA-30, and CZA-45, respectively. Among the composite catalysts, CZA-15 showed remarkable degradation efficiency and degraded 94% of MB, while the CZA-10, CZA-30, and CZA-45 catalysts showed 90, 81, and 79% degradation efficiencies, respectively, under visible light within 100 min of irradiation. The enhanced catalytic performance could be due to the smaller particle size, the higher electron and hole separation and charge transfer efficiencies, and the lower agglomeration in the composite catalyst system. The results also demonstrated that the Cu-doped ZnO prepared with cellulose as a template, followed by the optimum amount of Ag₂O deposition, could have promising applications in the degradation of organic pollutants. © 2024 The Authors. Published by American Chemical Society.

关键词： Catalysts Cellulose Degradation Electromagnetic radiation Oxides

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Activation of Peracetic Acid by Thermally Modified Carbon Nanotubes: Organic Radicals Contribution and Active Sites Identification

SSRN

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SSRN 2023年

作者： Shen, Wuziyue Yang, Libin Zhou, Zhe Gao, Haiping Zhou, Xuefei Zhang, Yalei Chen, Jiabin State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China State Key Laboratory of Marine Geology Tongji University Shanghai200092 China Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and Engineering Shandong University Shandong Qingdao266237 China

Carbon materials activated peracetic acid (PAA) as an environmentally friendly technology has attracted wide attention for pollutants degradation. In this work, thermally modified carbon nanotubes (CNT-t) were applied to efficiently activate PAA for phenol (PE) degradation. The identification of active sites involved in PAA activation and the contributions of different reactive radicals to the PE degradation were systematically investigated. Excellent removal efficiency of PE was obtained in the CNT−800/PAA system within 30 min at neutral conditions. Electron paramagnetic resonance (EPR) technique and radical quenching studies confirmed that organic radicals were the dominant reactive oxygen species (ROS) in the reaction process, while •OH made limited contribution to PE degradation. The material characterization proved that the lattice defects rate of CNT is positively correlated with the catalytic activity. The adsorption models verified that the double-vacancy defects (CNTs-DV) played a major role on the adsorption of PAA and activation process. In contrast to the influence of chlorine and carbonate ions, the PE degradation in CNT/PAA system was strongly affected by the initial pH and the presence of humic acid. Moreover, CNT-800 can still maintain good catalytic activity after five-cycle runs. Overall, this work not only provides valuable insights for the rational design and directional synthesis of high-performance nano-carbon catalysts, but also proposes a very meaningful oxidation system for wastewater treatment. © 2023, The Authors. All rights reserved.

关键词： Catalyst activity

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