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SSRN 2024年

作者： Kim, Hyeonmin Park, Rokjin J. Hong, Song-You Park, Do-Hyeon Kim, Sang-Woo Oak, Yujin J. Feng, Xu Lin, Haipeng Fu, Tzung-May School of Earth and Environmental Sciences Seoul National University Seoul Korea Republic of Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder United States Physical Sciences Laboratory The National Oceanic and Atmospheric Administration Earth System Research Laboratories Boulder United States Center for Sustainable Environment Research Korea Institute of Science and Technology Seoul Korea Republic of John A. Paulson School of Engineering and Applied Sciences Harvard University CambridgeMA United States State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Guangdong Shenzhen China Shenzhen Institute of Sustainable Development Southern University of Science and Technology Guangdong Shenzhen China Seoul National University Korea Republic of

Vertical mixing within the planetary boundary layer (PBL) is crucial for determining surface-level pollutant concentrations. However, standard PBL schemes in chemical transport models (CTMs) often fail to adequately define the upper bounds of vertical mixing, particularly at night. This limitation frequently results in overestimated nocturnal concentrations of pollutants near the surface. To address this issue, we propose a parameterization of mixed layer height (MLH) derived from the Yonsei University (YSU) PBL scheme and thoroughly evaluate it by comparing simulations with various observations. We utilized the Weather Research and Forecasting model coupled with GEOS-Chem (WRF-GC) to simulate gas and aerosol distributions over South Korea during the Satellite Integrated Joint Monitoring of Air Quality (SIJAQ) campaign in 2021. The WRF-GC simulations incorporating the MLH parameterization improved the excessive titration of O3 and the overproduction of HNO3 and NO3- in the model. Consequently, the model performances in gaseous and aerosol simulations showed a better agreement with observations, with changes in normalized mean biases (NMBs) of NOX (from 50% to -27%), O3 (from -49% to -28%), NO3- (from 126% to 91%), NH4+ (from 113% to 85%), BC (from 322% to 135%), and PM2.5 (from 58% to 28%). © 2024, The Authors. All rights reserved.

关键词： Atmospheric chemistry

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Impact of China’s Air pollution Prevention and control Action Plan on PM2.5 chemical composition over eastern China

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Science China Earth Sciences 2019年第12期62卷 1872-1884页

作者： Guannan GENG Qingyang XIAO Yixuan ZHENG Dan TONG Yuxuan ZHANG Xiaoye ZHANG Qiang ZHANG Kebin HE Yang LIU Department of Environmental Health Rollins School of Public HealthEmory UniversityAtlantaGeorgia 30322USA Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing 100084China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Key Laboratory for Atmospheric Chemistry Chinese Academy of Meteorological SciencesCMABeijing 100081China

China promulgated the Air pollution Prevention and control Action Plan(the Action Plan)in 2013 and developed stringent control measures to mitigate fine particulate matter(PM2.5) ***,we investigated the PM2.5 chemical composition changes over eastern China associated with the Action Plan during 2013-2017 using satellite-based PM2.5 chemical composition data derived using CMAQ simulations and satellite *** PM2.5 concentrations decreased considerably during this time as a result of the reductions in all chemical species in *** population-weighted mean concentrations over eastern China decreased from 11.1 to 6.7μgm-3 for SO42-,13.8-13.1μgm-3 for NO3-,7.4-5.8μgm-3 for NH4+,9.9-8.4μgm-3 for OM,4.6-3.8μg m-3 for BC and 12.9-9.6μg m-3 for other species in ***42-had the largest reduction of 40%,while NO3-had the lowest reduction of 5%,resulting in a greater fraction of NO3-and a smaller fraction of SO42-in *** the three key regions,Beijing-Tianjin-Hebei had the largest reduction in PM2.5 and its chemical *** decrease in SO42-concentrations was in line with the reduction of SO2 emissions,and the major driver of the SO2 emission reductions was the industrial *** decrease in NO3 concentrations was limited because the decrease in SO2 emissions and the stable NH3 emissions facilitated the formation of NO3-from HNO3,which partially offset the reduction in NOx emissions driven by the power *** mitigate PM2.5 pollution more effectively,future efforts are needed to reduce NH3 emissions.

关键词： PM25 chemical composition Air pollution Prevention and control Action Plan Satellite remote sensing

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Resource, Economic, and Carbon Benefits of End-of-Life Trucks' Urban Mining in China

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SSRN 2024年

作者： Xiong, Xin Wang, Haicheng Liu, Fei Miao, Youping Yang, Shuo He, Ziyan Nakajima, Kenichi Xu, Guochang School of Sustainable Energy and Resources Nanjing University Suzhou215163 China Material Cycles Division National Institute for Environmental Studies Onogawa 16-2 Tsukuba305-8506 Japan Shandong Weiji Carbon-technology Co. Ltd. Shandong Jinan250000 China Academy of Agricultural Planning and Engineering Ministry of Agriculture and Rural Affairs Beijing100125 China State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China Department of Information Engineering Zibo Technician College Shandong Zibo255000 China Graduate School of Frontier Sciences The University of Tokyo 5-1-5 Kashiwanoha Chiba Kashiwa277-8563 Japan

China’s booming truck industry has led to a rapid rise in end-of-life trucks. However, only a third of them end up in formal recycling. Accordingly, this study estimated the resource, economic, and decarbonization potential of end-of-life trucks in China from 2000 to 2050. Our analysis shows that the total amount of end-of-life trucks will increase 9-fold to 53 Mt by 2050. The total economic benefit from these recyclable resources will rise from 2.6 billion US$ in 2010 to 23 billion US$, or 44 billion US$ if considering 2% inflation, by 2050. Effective urban mining of Al, Fe, and Cu was able to reduce carbon emissions by 45 Mt from primary material production in 2023. These quantitative data can provide scientific support for policy formulation and technology development. Urban mining of end-of-life trucks can positively promote dematerialization and decarbonization development for a society that lacks clean energy power grids. © 2024, The Authors. All rights reserved.

关键词： Carbon

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Complexation between Butyl Xanthate and Cu Enhanced Peroxydisulfate Activation and Cation Redox Cycle by Fe-Cu-Ldh/Biochar

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SSRN 2023年

作者： Li, Baoxin Hu, Xinjiang Gu, Yanling Yang, Hailan Ye, Shujing Yang, Zhongzhu Liu, Ni Tan, Xiaofei College of Environmental Science and Engineering Key Laboratory of Environmental Biology and Pollution Control Ministry of Education Hunan University Changsha410082 China Shenzhen Research Institute of Hunan University Shenzhen518055 China College of Environmental Science and Engineering Central South University of Forestry and Technology Changsha410004 China College of Materials Science and Engineering Changsha University of Science and Technology Changsha410114 China School of Resources Environment and Materials Guangxi University Nanning530004 China School of Public Administration and Human Geography Hunan University of Technology and Business Changsha410205 China

Butyl xanthate (BX) is one of the most widely used collector in sulfide flotation. It is harmful to human health but its degradability has not been addressed in depth. In this study, Fe-Cu-Layered double hydroxides/Biochar composites (Fe-Cu-LDH/BC) were prepared and firstly used to activate peroxydisulfate (PDS) for degradation of butyl xanthate. More than 90% degradation of BX could be achieved within 10 min. The high degradation efficiency was owing to the complex formation between catalyst and contaminant molecule by a coordination bond of the Cu in Fe-Cu-LDH/BC and the S in BX. Through DFT calculations, it could be found that this complexation enhanced the adsorption efficiency of LDH/BC on PDS. And the reactivity of the Cu site. EPR was applied to analyze the reactive substances in the reaction, and various reactive oxygen species such as O2•−, •OH and SO4•− were detected in the process. In addition, LC-MS was used to analyze and speculate the intermediates and degradation pathways of BX. In conclusion, this material can rapidly degrade BX in water under different conditions and has great potential in treating mine wastewater. Meanwhile, this study provides a new support for the preparation of new catalysts for the efficient treatment of pollutants. © 2023, The Authors. All rights reserved.

关键词： Degradation

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Offshore wave and wind energy development in the Southern Hemisphere will remain optimal between 20°E and 180°E by 2100

Communications Earth & Environment

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Communications Earth & environment 2025年第1期6卷 1-12页

作者： Xiaohu Zhao Yongping Li Xiong Zhou Wenchang Tang Bo Pang Guohe Huang Chen Lu Chuyin Tian Tangnyu Song School of Geoscience and Technology Zhengzhou University Zhengzhou China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing China State Key Joint Laboratory of Environmental Simulation and Pollution Control China-Canada Center for Energy Environment and Ecology Research UR-BNU School of Environment Beijing Normal University Beijing China Environmental Systems Engineering Program University of Regina Regina Canada The Abdus Salam International Centre for Theoretical Physics Trieste Italy Department of Geography & Environmental Management University of Waterloo Ontario Canada School of Marine and Atmospheric Science Stony Brook University Stony Brook USA

Wave and offshore-wind energies offer promising alternatives to fossil fuels, yet their combined potential under climate change remains poorly understood. Here we assess how climate change may affect this potential over the coming century, using outputs from fifteen global climate models included in the Coupled Model Intercomparison Project Phase 6 and an empirical method to refine model projections. We identify two oceanic bands between 40°S and 60°S with high combined energy potential. Notably, the region between 20°E and 180°E is projected to remain favorable for both energy sources. We also conduct a multi-level analysis to show how improved climate modeling enhances predictions of renewable energy resources. These findings provide valuable insights for policymakers, industry stakeholders, and researchers seeking to enhance the resilience and sustainability of renewable energy systems.

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Rapid control of black and odorous substances from heavilypolluted sediment by oxidation:Efficiency and effects

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Frontiers of environmental Science & Engineering 2019年第6期13卷 91-101页

作者： Kun Li Min Yang Jianfeng Peng Ruiping Liu Tista Prasai Joshi Yaohui Bai Huijuan Liu Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100039China Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China Nepal Academy of Science and Technology KhumaltarLalitpur 44700Nepal

The control ofblack and odorous substances in sediments is of crucial importance to improve the urban ecological landscape and to restore water environments *** this study,chemical oxidation by the oxidants NaClO,H2O2,and KMnO4 was proposed to achieve rapid control of black and odorous substances in heavily-polluted *** indicate that NaClO and KMnO4 are effective at removing Fe(II)and acid volatile *** removal efficiencies of Fe(II)and AVS were determined to be 45.2%,94.1%,and 93.7%,89.5%after 24-h exposure to NaClO and KMnO4 at 0.2 mmol/g,***,rapid oxidation might accelerate the release of pollutants from *** release of organic matters and phosphorus with the maximum ratios of 22.1%and 51.2%was observed upon NaClO oxidation at 0.4 mmol/***,the introduction of oxidants contributed to changes in the microbial community composition in *** oxidation by NaClO and KMnO4 at 0.4 mmol/g,the Shannon index decreased from 6.72 to 5.19 and 4.95,whereas the OTU numbers decreased from 2904 to 1677 and 1553,***,H2O2 showed a lower effect on the removal of black and odorous substances,pollutant release,and changes in sediment *** study illustrates the effects of oxidant addition on the characteristics of heavily polluted sediments and shows that chemical oxidants may be an option to achieve rapid control of black and odorous substances prior to remediation of water environments.

关键词： Oxidants Heavily polluted sediment Black and odorous substances Release behaviors Microorganism

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Photolysis and photooxidation of typical gaseous VOCs by UV Irradiation： Removal performance and mechanisms

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Frontiers of environmental Science & Engineering 2018年第3期12卷 107-120页

作者： In-Sun Kang Jinying Xi Hong-Ying Hu Environmental Simulation and Pollution Control State Key Joint Laboratory School of Environment Tsinghua University Beijing 100084 China

Photodegradation by ultraviolet irradiation （UV） is increasingly applied in volatile organic compound （VOC） and odor gas treatments. In this study, 27 typical VOCs, including 11 hydrocarbons and 16 hydrocarbon derivatives, at 150-200 ppm in air and nitrogen gas were treated by a laboratory-scale UV reactor with 185/254 nm irradiation to systematically investigate their removal and conversion by UV irradiation. For the tested 27 VOCs, the VOC removal efficiencies in air were within the range of 13 %- 97% （with an average of 80%） at a retention time of 53 s, which showed a moderate positive correlation with the -molecular weight of the VOCs （R = 0.53）. The respective contributions of photolysis and photooxidation to VOC removal were identified for each VOC. According to the CO2 results, the mineralization rate of the tested VOCs was within the range of 9%-90%, with an average of 41% and were negatively correlated to the molecular weight （R = -0.63）. Many of the tested VOCs exhibited high concentration particulate matters in the off-gases with a 3-283 mg/m^3 PM10 range and a 2-40 mg/m^3 PM2.5 range. The carbon balance of each VOC during UV irradiation was analyzed based on the VOC, CO2 and PM10 concentrations. Certain organic intermediates and 23-218 ppm ozone were also identified in the off-gases. Although the UV technique exhibited a high VOC removal efficiency, its drawbacks, specifically low mineralization, particulate matters production, and ozone emission, must be considered prior to its application in VOC gas treatments.

关键词： VOCs UV photodegradation Particulate matters Ozone

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Rapid improvement of PM2.5 pollution and associated health benefits in China during 2013–2017

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Science China Earth Sciences 2019年第12期62卷 1847-1856页

作者： Tao XUE Jun LIU Qiang ZHANG Guannan GENG Yixuan ZHENG Dan TONG Zhu LIU Dabo GUAN Yu BO Tong ZHU Kebin HE Jiming HAO Department of Earth System Science Tsinghua UniversityBeijing 100084China College of Environmental Science and Engineering Peking UniversityBeijing 100871China Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

Exposure to fine particulate matter(PM2.5)is known to harm public *** China,after implementation of aggressive emissions control measures under the Action Plan of Air pollution Prevention and control(2013-2017),air quality has significantly *** this work,we investigated changes in PM2.5 exposure and the associated health impacts in China for the period *** used an optimal estimator of PM2.5 combining in-situ observations,satellite measurements,and simulations from a chemical transport model to derive the spatial and temporal variations in PM2.5 exposure,and then used welldeveloped exposure-response functions to estimate the premature deaths attributable to PM2.5 *** found that national population-weighed annual mean PM2.5 concentrations decreased from 67.4μgm-3 in 2013 to 45.5μgm-3 in 2017(32%reduction).This rapid decrease in PM2.5 pollution led to a 14%reduction in premature deaths due to long-term *** estimated that,during 2013-2017,the premature deaths attributable to long-term PM2.5 exposure decreased from 1.2 million(95%CI:1.0,1.3;fraction of total mortality:13%)in 2013 to 1.0 million(95%CI:0.9,1.2;10%)in *** the rapid decrease in annual mean PM2.5 concentrations,health benefits associated with reduced long-term exposure were limited,because for many cities,the PM2.5 levels remain at the portion where the exposure-response function is less steeper than that at the lowconcentration *** also found that the deaths associated with acute exposure decreased by 61%during 2013-2017 due to rapid reduction in the number of heavily polluted *** results confirm that clean air policies in China have mitigated the air pollution crisis;however,continuous emissions reduction efforts are required to protect citizens from air pollution.

关键词： Air quality improvement Health impact assessment Action plan of air pollution prevention and control PM2.5 Mortality

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Occurrence, Sources and Risk Assessment of Pyrethroid Insecticides in Surface Water and Tap Water from Taihu Lake, China

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SSRN 2022年

作者： Wang, Rui Zhang, Shengwei Xiao, Kaiyan Cai, Minghong Liu, Hongling Ministry of Natural Resources Key Laboratory for Polar Science Polar Research Institute of China 451 Jinqiao Road Shanghai 200136 China School of Oceanography Shanghai Jiao Tong University 1954 Huashan Road Shanghai 200030 China Antarctic Great Wall Ecology National Observation and Research Station Polar Research Institute of China 1000 Xuelong Road Shanghai 201209 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing100875 China Department of Municipal and Environmental Engineering School of Civil Engineering Beijing Jiaotong University Beijing100044 China

Pyrethroid insecticides are among the most widely used insecticides worldwide and pose a serious threat to human health and the environment. In this study, we applied high-throughput organic analysis testing combined with high-volume solid-phase extraction (Hi-throat/Hi-volume SPE) to investigate the occurrence of 11 pyrethroid insecticides in lake water (n=37), tributary river water (n=15), and tap water (n=6) in the Taihu Lake Basin. Permethrin was determined to be the major contributing pyrethroid insecticide (100%). The concentrations of pyrethroid insecticides from different areas of the lake were as follows: southern (S023–S26, mean 2,331 ng/L) > eastern (S01–S04 and S32–S37, mean 1,664 ng/L) > western (S17–S22 and S28–S31, mean 1,459 ng/L) > northern (S05–S16, mean 821.1 ng/L). The results of the principal component analysis with multiple linear regression indicated that landscape maintenance, agricultural cultivation, and livestock breeding were the main sources of pyrethroid insecticides in the Taihu Lake surface water. Runoff input plays an important role in the accumulation of pyrethroid insecticides in Taihu Lake, and surrounding rivers contribute 2,292 kg of pyrethroid insecticides to Taihu Lake annually. The risk assessment results indicate that pyrethroid insecticides present a high risk to both the ecological environment and surrounding human populations and must be taken seriously. Further, the use of pyrethroid insecticides in the Yangtze River Delta region needs to be controlled. This is the first study in China to report the residue levels in water sources and tap water. © 2022, The Authors. All rights reserved.

关键词： Risk assessment

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Erratum to: One-step ball milling-prepared nano Fe2O3 and nitrogen-doped graphene with high oxygen reduction activity and its application in microbial fuel cells

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Frontiers of environmental Science & Engineering 2020年第4期14卷 225-225页

作者： Xingguo Guo Qiuying Wang Ting Xu Kajia Wei Mengxi Yin Peng Liang Xia Huang Xiaoyuan Zhang State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing China

Erratum to:***.2020,14(2):30 https://***/10.1007/s 11783-019-1209-1 The authors wish to make some corrections as below:(1)Some errors occurred when Fig.5d was exported and the corrected version is shown here.

关键词： graphene correction application

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