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SSRN 2024年

作者： Luo, Moye Cao, Shaohua Xu, Chenghua Zhang, Xiaodong Zhu, Xin Zhan, Manjun Yu, Dandan Long, Tao Yu, Ran Department of Environmental Science and Engineering School of Energy and Environment Southeast University Jiangsu Nanjing210096 China State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment of China Jiangsu Nanjing210042 China Jiangsu geological engineering environment Intelligent Monitoring Engineering Research Center The First Geological Brigade of Jiangsu Provincial Bureau of Geology and Mineral Resources Jiangsu Nanjing210041 China Nanjing Research Institute of Environmental Protection Nanjing Environmental Protection Bureau Jiangsu Nanjing210013 China

The bioremediation of chlorinated ethenes (CEs) contaminated groundwater is attracting increasingly attention in practical remediation projects. However, modelling of microbial metabolic processes under the constraints of substrate and environmental factors is inadequate. This study developed a new kinetic model, which incorporated the logistic model and Dual-Monod kinetic to represent the interaction between the controlled microbial growth and the bioavailable substrates in CE-contaminated groundwater. The proposed model was based on discrete observations to simulate microbial growth under the constraints of substrate and environmental conditions, reducing the amount of observational data required for the model. Meanwhile, the proposed model introduced two new kinetic parameters, the effective specific growth rate [[EQUATION]] and the real self-limiting coefficient of microbial growth [[EQUATION]], to simplified the number of independent parameters. A parameter estimation method based on the proposed Newton's algorithm for the proposed model was also developed. The model was validated based on the hypothetical data, experimental results, and a published dataset, demonstrated the successful simulation of microbial growth and the sequential biodegradation of PCE in groundwater systems (*E © 2024, The Authors. All rights reserved.

关键词： Biodegradation

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Aquatic ecosystem health assessment in China based on metacommunity theory: From theory to practice

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Carbon Research 2025年第1期4卷 1-4页

作者： Jin, Xiaowei Xie, Huiyu Zhao, Xianfu He, Dekui Zhan, Aibin Cai, Yongjiu Wu, Naicheng Zhang, Xiaowei Yang, Jun Wang, Yeyao Johnson, Andrew C. Wu, Fengchang China National Environmental Monitoring Centre Beijing100012 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China College of Water Sciences Beijing Normal University Beijing100875 China Key Laboratory of Ecological Impacts of Hydraulic-Projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources Institute of Hydroecology Ministry of Water Resources and Chinese Academy of Sciences Wuhan430079 China Institute of Hydrobiology Chinese Academy of Sciences Wuhan430072 China Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China Key Laboratory of Lake and Watershed Science for Water Security Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing210008 China Department of Geography and Spatial Information Techniques Ningbo University Ningbo315211 China State Key Laboratory of Pollution Control & Resource Reuse School of the Environment Nanjing University Nanjing210023 China Fujian Key Laboratory of Watershed Ecology Cc Xiamen361021 China Centre for Ecology and Hydrology Oxfordshire WallingfordOX10 8BB United Kingdom

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Ensemble source apportionment of particulate matter and volatile organic compounds and quantifying ensemble source impacts on ozone

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Journal of environmental Sciences (China) 2025年 157卷 534-545页

作者： Liang, Weiqing Wang, Zhenyu Zhao, Dongheng Liu, Jinxing Ma, Tong Feng, Yinchang Shi, Guoliang State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control Tianjin Key Laboratory of Urban Transport Emission Research College of Environmental Science and Engineering Nankai University Tianjin300350 China College of Environmental Science and Engineering Nankai University Tianjin300350 China State Key Laboratory of Precision Measuring Technology and Instruments Tianjin Environmental Monitoring Technology Enterprise Key Laboratory School of Precision Instrument and Optoelectronics Engineering Tianjin University Tianjin300072 China Co. Ltd. Tianjin300072 China Chinese Research Academy of Environmental Sciences Beijing100012 China

Serious fine particulate matter (PM2.5) pollution and rapidly increasing of ground-level ozone (O3) concentrations are concern issues in China. To achieve the comprehensive control of PM2.5-O3 composite air pollution, exploring the common sources of PM2.5 and VOCs is essential. However, previous researches most carried out either PM2.5 or VOCs source appointment. In this study, we applied the ensemble source apportionment method to explore the impacts of common sources on PM2.5-VOCs. Subsequently, we obtained the ensemble source impacts on O3 combining the extracted VOCs source profile and ozone formation potential. We found that the focus of environmental management and source control should be varied accordingly for different pollutants. Vehicle emission was the largest contributor (41 %) to PM2.5-VOCs, while industrial emission was the main common source (51 %) to O3. The result showed that the O3 production rate is not only related to the VOCs emission, but also to the reactivity of VOCs. In addition, sensitivity tests revealed that temperature was the main factor affecting O3 formation. The study provides a framework to explore the common sources impact on PM2.5 and VOCs, which is benefit to address both PM2.5 and O3 mitigations. © 2024

关键词： Emission control

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Thermochemical Energy Storage by Calcium Looping Process that Integrates Co2 Power Cycle and H2o Steam Power Cycle

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SSRN 2022年

作者： Luo, Cong Xu, Yongqing Lu, Chuangao Wang, Guang Yan, Xiaopei Gao, Ge Lu, Bowen Wu, Fan Zhang, Liqi State Key Laboratory of Coal Combustion School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan430074 China State Environment Protection Key Laboratory of Environmental Monitoring Quality Control China National Environmental Monitoring Centre Beijing100012 China State Grid Hebei Electric Power Research Institute Shijiazhuang050021 China

Effects of different CaO-based raw materials, and various organic acid modification on the conversion of CaO heat carriers in close-loop calcium looping process coupled thermochemical energy storage(CaLP-TCES) system are investigated. Besides, a novel CaLP-TCES system that integrates CO2 cycle and H2O steam cycle to make full use of the energy in the system was proposed. Natural CaO-based heat carriers underwent drastically deactivation over the CaLP-TCES cycles. Compared with other natural materials, limestone presented the best cyclic carbonation conversion, which retained 14.2% of conversion rate, while glycine modification doubled the conversion rate of it. The efficiency of the CaLP-TCES system presented "S" type growth with the increase of carbonation conversion and carbonation temperature, while it showed a parabolic growth with the increase of pressure ratio. In addition, the global system efficiencies in the fullday time mode are always ~72% higher than that in daytime mode. Hence, the glycine-limestone would be a promising heat carrier for the CaLP-TCES system, and CaLP-TCES in fullday time mode is more applicable for the concentrated solar power. 850 ℃ might be a good option for carbonation process, and the higher carbonation conversion rate and pressure ratio would be more benefit for the global system efficiency. © 2022, The Authors. All rights reserved.

关键词： Carbonation

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Ambient Ozone Exposure, Semen Plasma Metabolites, and Sperm quality Decline among Adult Men in Wuhan China

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environment & Health 2024年第10期2卷 729-738页

作者： Yangchang Zhang Shi Zhao Wangnan Cao TREE Study Team Shengzhi Sun Qiang Zeng Peng Luo School of Public Health Capital Medical UniversityBeijing 100069P.R.China School of Public Health Tianjin Medical UniversityTianjin 300070P.R.China Tianjin Key Laboratory of Environment Nutrition and Public HealthTianjin Medical UniversityTianjin 300070P.R.China Department of Social Medicine and Health Education School of Public HealthPeking UniversityBeijing 100191P.R.China 不详 School of Public Health and Beijing Municipal Key Laboratory of Clinical Epidemiology Capital Medical UniversityBeijing 100069P.R.China Department of Occupational and Environmental Health School of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430074P.R.China Key Laboratory of Environment and Health Ministry of Education&Ministry of Environmental ProtectionState Key Laboratory of Environmental Health(incubating)School of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430074 HubeiP.R.China School of Public Health The Key Laboratory of Environmental Pollution Monitoring and Disease ControlMinistry of EducationGuizhou Medical UniversityGuiyang 550025P.R.China

Ambient ozone(O3)exposure may be associated with a reduction of semen quality,yet the potential biological mechanisms remain *** investigated the effects of certain seminal plasma metabolites on mediating the links between O3 exposure and the deterioration of semen *** untargeted metabolomics analysis was performed on semen samples of 200 Chinese adult men to determine candidate metabolites associated with characteristics of semen *** analysis was adopted to examine whether these metabolites modulated the links between O3 exposure and semen *** found a significant reduction in sperm concentration by−28.1%(95%CI:−41.7%,−11.3%),and sperm count by−29.2%(95%CI:−43.7%,−11.0%)associated with each 10μg/m3 increase in ambient O3 concentration during the period of sperm *** delineated 7 metabolites in seminal fluid that substantially mediated the links between O3 exposure and declined semen quality,including myristoleic acid,aspartyl-isoleucine,phenylethyl primeveroside,ACar(18:2),ACar(18:1),FAHFA(22:6/22:3),and LPS(22:5).Among these,myristoleic acid exhibited the most pronounced mediation effects,with its indirect effect of which accounts for 46.4%of the overall *** findings suggested that exposure to ozone decreased sperm quality by disrupting fatty acid metabolism,particularly myristoleic acid.

关键词： ozone exposure sperm quality adult men metabolomics

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Aqueous production of sulfur-containing aerosols from nitroaromatic compounds and SO2 in wintertime urban haze

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Science Bulletin 2025年第11期70卷 1846-1855页

作者： Yang, Ning Wang, Junfeng Jacob, Daniel J. Ye, Jianhuai Sheng, Ming Niu, Mutong Qin, Yiming Ge, Xinlei Sun, Yele Wang, Zifa Wang, Yuhang Wu, Fengchang Liu, Cong-Qiang George, Christian Fu, Pingqing Institute of Surface-Earth System Science School of Earth System Science Tianjin University Tianjin300072 China School of Emergency Management Nanjing University of Information Science and Technology Nanjing210044 China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science and Technology Nanjing210044 China John A. Paulson School of Engineering and Applied Sciences Harvard University CambridgeMA02138 United States School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen518055 China School of Energy and Environment City University of Hong Kong Hong Kong999077 China LAPC Institute of Atmospheric Physics Chinese Academy of Sciences Beijing100029 China School of Earth and Atmospheric Sciences Georgia Institute of Technology AtlantaGA02115 United States State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China Université Claude Bernard Lyon 1 CNRS IRCELYON VilleurbanneF-69626 France

Nighttime aqueous oxidation of fossil fuel emissions is a significant source of atmospheric secondary organic aerosols. However, the underlying mechanism of the aqueous processing remains unclear. Utilizing ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry of water-soluble organic carbon samples, we present field observations that reveal the aqueous-phase conversion of nitroaromatic compounds (NACs) and sulfur-containing aerosols from fossil fuel combustion at high relative humidity during a severe haze event in Beijing in the winter of 2016. We have confirmed that the ring-breaking oxidation of NACs can generate nitrous acid in the aqueous phase, which rapidly oxidizes sulfur dioxide (SO2) to sulfate. Subsequently, reactions between sulfate and unsaturated compounds contribute to the formation of aliphatic organosulfates. Our results elucidate a molecular-level understanding of the aqueous production of sulfur-containing aerosols from NACs and SO2 in wintertime urban haze. © 2025 Science China Press

关键词： Sulfur dioxide

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Modeling Assessment of Air Pollution control Measures and Covid-19 Pandemic on Air quality Improvements Over Greater Bay Area of China

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SSRN 2024年

作者： Wang, Shaoyi Zhu, Yun Jang, Ji-Cheng Jiang, Ming Yue, Dingli Zhong, Liuju Yuan, Yingzhi Zhang, Mengmeng You, Zhiqiang Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environment and Energy South China University of Technology Guangzhou Higher Education Mega Center Guangzhou510006 China Guangdong Ecological and Environmental Monitoring Center Guangzhou510308 China Guangdong Polytechnic of Environmental Protection Engineering Foshan528216 China

A remarkable progress has been made toward the air quality improvements over the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) of China from 2017 to 2020. In this study, for the first time, the emission reductions of regional control measures together with the COVID-19 pandemic were considered simultaneously into the development of the GBA's emission inventories for the years of 2017 and 2020. Based on these collective emission inventories, the impacts of control measures, meteorological variations together with temporary COVID-19 lockdowns on the five leading air quality index pollutants (SO2, NO2, PM2.5, PM10, and O3) were evaluated using the WRF-CMAQ and SMAT-CE model attainment assessment tool over the GBA region. Our results revealed that control measures in the Pearl River Delta (PRD) region affected significantly the GBA, resulting in pollutant reductions ranging from 48% to 64%. In contrast, control measures in Hong Kong and Macao contributed to pollutant reductions up to 10%. In PRD emission sectors, stationary combustion, on-road, industrial processes and dust sectors stand out as the primary contributors to overall air quality improvements. Moreover, the COVID-19 pandemic during period I (Jan 23-Feb 23) led to a reduction of NO2 emissions by 7.4%, resulting in a negative contribution (disbenefit) for O3 with an increase by 2.4%. Our findings highlight the significance of PRD control measures for the air quality improvements over the GBA, emphasizing the necessity of implementing more refined and easily manageable joint prevention and control policies. © 2024, The Authors. All rights reserved.

关键词： COVID-19

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Research on the Remediation Effects of Amd Based on Hydrogeochemical Zonation: A Typical Metal Mine in China

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SSRN 2024年

作者： Jie, Tang Xin, Liu Bo, Li Yuhan, Nie Xin, Gao Man, Gao Guo, Liu State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu610059 China State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation & Water Pollution College of Ecology and Environment Chengdu University of Technology Chengdu610059 China College of Environmental Science and Engineering China West Normal University Nanchong637001 China

Mining activities disrupt the natural underground oxidative environment, leading to increased oxidation of metal sulfides such as pyrite and the subsequent formation of highly acidic Acid Mine Drainage (AMD) with high concentrations of Fe and SO42-. However, applying generic plugging and backfilling methods without considering the specific post-mining subsurface oxidizing environments of different metal mines often yields minimal results. To address this issue and develop targeted remediation methods for AMD in Dexing, China, a study was conducted. 15 water samples from flood and dry periods, as well as 15 borehole samples, were collected for hydrogeological and chemical analysis. For the first time, the study proposed that the redox zone could be identified and delineated through vertical analysis of water storage media, mineral composition, and hydrochemical characteristics. A hydrogeochemical conceptual model was constructed, revealing that AMD formation primarily occurs in oxidative environments, with distinct hydrogeological zones characterized by the oxidation zone and transition zone. Based on the redox zone characteristics of the study area, actual engineering sealing was performed on the oxidation zone and transition zone of the No. 23 cavity. The results of the remediation efforts showed significant improvements in water quality. The pH increased from 2.54 before remediation to 4.45, indicating a reduction in acidity. The concentration of SO42- and TFe diminished manifestly, decreased respectively by 46.62% and 83.97% from 1360 mg/L and 147 mg/L before governance to 726 mg/L and 23.56 mg/L. And the concentration of Ca2+, Mg2+, K+, Na+, TMn and Cl- were respectively reduced by 22.16%, 44.2%, 36%, 28.19%, 10.71% and 39.52%. This study provides a novel idea and valuable reference for the refined identification and classification of redox zone after metal mine exploitation and the targeted plugging and governance of cavities that produce AMD. © 2024, The Autho

关键词： Sulfur compounds

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Increased microbial complexity and stability in rhizosphere soil: A key factor for plant resilience during mining disturbance

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Science of the Total environment 2024年 956卷 177100页

作者： Xiao, Enzong Deng, Jinmei Shao, Li Xiao, Tangfu Meng, Fande Liu, Chengshuai Ning, Zengping Key Laboratory for Water Quality and Conservation of the Pearl River Delta Ministry of Education School of Environmental Science and Engineering Guangzhou University Guangzhou510006 China State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang550081 China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu610059 China Anhui Science & Technology University College of Resource & Environment Chuzhou233100 China Guangdong Provincial Key Laboratory of Integrated Agro-environmental Pollution Control and Management Institute of Eco-environmental and Soil Sciences Guangdong Academy of Sciences Guangzhou510650 China

The network-based complexity and stability of the microbial community are critical for host fitness under disturbance, but there are still gaps in our understanding of whether there are general rules governing this relationship. Despite evidence that the rhizosphere microbiome plays an important role in host fitness, it is unclear whether rhizosphere microbial complexity and stability influence host plant fitness under scenarios of environmental disturbance. Here, we investigated the effects of mining disturbance on the complexity and stability of the rhizosphere microbiome and its potential role in plant fitness. Our findings demonstrated that, compared with mildly disturbed mining sites, severely disturbed mining sites exhibited significantly increased complexity and stability indices of the rhizosphere microbial community. Furthermore, we identified a positive feedback relationship between microbial complexity and stability and the functional potential of the microbial community, which ultimately benefits plant fitness. Our study provides empirical evidence that mining disturbance increases microbial complexity and stability, thereby increasing the resilience of host plants to environmental disturbance. Understanding microbially mediated tolerance to mining disturbance may improve our ability to predict and manage plant adaptability in changing environments. © 2024 Elsevier B.V.

关键词： Plant diseases

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Health Risk Evaluation and Value Loss Analysis of Pm2.5 and Ozone in China

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SSRN 2024年

作者： Wang, Bingbing Ji, Yaqin Yang, Xiawei Shi, Jingwen Xu, Wenju Ma, Jiaofan Shen, Ruixing Wang, Baoqing Zhang, Jing Feng, Yinchang College of Environmental Science and Engineering Nankai University Tianjin300350 China State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control Tianjin300350 China Tianjin Eco-Environmental Monitoring Center Tianjin300191 China

In recent years, increasing concern has been observed in China regarding PM2.5 and ozone as major atmospheric pollutants, which pose significant risks to air quality and public health. The aim of this study was to analyze the spatial and temporal distribution patterns of PM2.5 and O3 across 31 provinces in China during 2022. Furthermore, the study assessed the population’s exposure risks and estimated the loss of health value. The findings indicated that (1) The PM2.5 concentration followed a monthly "U" pattern, while the O3 concentration exhibited an inverted "U" trend. The simultaneous presence of PM2.5 and O3 was primarily noted in spring. In contrast, PM2.5-dominated and ozone-dominated pollution were more prevalent in winter and summer, respectively. (2) The risk of public exposure to them displayed a spatially parallel distribution, with higher risks generally found east of the Heihe-Tengchong Line compared to the west. (3) An estimated 31.99 × 104 individuals were projected to suffer premature mortality, with 22.58 × 104 and 9.41 × 104 linked to PM2.5 and ozone, respectively. The economic costs associated with premature deaths due to them were 214.31 billion and 94.53 billion yuan, respectively, representing 7.53% of GDP. These results underscored the significant impact of PM2.5 and ozone pollution on public health and the loss of health value in China. Therefore, the urgent implementation of targeted pollution control and prevention strategies for air pollution across different provinces is necessary. © 2024, The Authors. All rights reserved.

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