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SSRN 2024年

作者： Han, Xiao Wang, Yichen Du, Mingxi Tian, Chenguang Xie, Meiying Zhang, Linru Jiang, Yingkun School of Public Policy and Administration Xi’an Jiaotong University 28 Xianning Road West Shaanxi Xi’an710049 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 Jiangsu Nanjing210044 China Xi’an Institute for Innovative Earth Environment Research Shaanxi Xi’an710061 China

technology progress is one of the most attractive measures to tackling the dual pressures of carbon reduction and fine particulate matter (PM2.5) pollution control. However, due to the existence of the environmental rebound effect (ERE), such technical efforts are limited. The spatiotemporal patterns and synergy of the ERE for carbon and PM2.5 emissions have not been thoroughly explored, thereby hindering the realization of co-abatement strategies. This study employs the growth accounting approach to estimate the ERE across 30 provinces in China from 2001 to 2019. The average magnitude of the rebound effect for carbon emissions (CRE) reached 125.45%, while that for PM2.5 pollution (PRE) was 45.01%. CRE and PRE substantially offset the potential savings, particularly the backfire effect of carbon emissions. The degrees of both CRE and PRE experienced a generally diminishing trend over the studied period, with significant heterogeneity in the spatial distribution pattern. Additionally, we find that the synergistic reduction effect between CRE and PRE was approximately 0.97, and that the synergy grades of the eastern coastal as well as central regions were higher than that of the western region. These findings enhance the understanding of the intertwined relationship between carbon and PM2.5 reductions from the perspective of the ERE, providing crucial references for collaborative governance and the further achievement of sustainable development goals. © 2024, The Authors. All rights reserved.

关键词： Carbon

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Efficiency of Submerged Ceramic Flat Membrane Bioreactor in the Treatment of Coal Chemical Wastewater

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SSRN 2022年

作者： Wan, Ning Liu, Jingchun Shi, Jingxin Han, Hongjun Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing210044 China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin150090 China

Coal chemical wastewater inhibits the development of the modern coal chemical industry. This study used a submerged ceramic flat membrane bioreactor to treat coal chemical wastewater. The treatment effect of ceramic flat membrane bioreactor and related influencing factors were studied. The Chemical Oxygen Demand (COD) concentration, ammonia nitrogen concentration, total phenol concentration, and turbidity of coal chemical wastewater could be reduced to below 31.4 mg/L, 3.03 mg/L, 3.76 mg/L, and 0.4 NTU. The ceramic flat membrane bioreactor achieved the optimal removal effect on pollutants when HRT was 21 h, Dissolved Oxygen (DO) concentration was 3.2 ~ 4.0 mg/L and pH was 7.1 ~ 7.5. Among them, the total phenol removal ratio reached the maximum value of 95.31%, and the COD removal ratio remained at 93% ~ 94%, ammonia nitrogen removal ratio was stable at 95% ~ 97%. The microorganisms in the mixture and membrane mainly were aerobic bacteria, and the content of organic-degrading bacteria, nitrifying and denitrifying bacteria was high. The addition of a membrane module not only prevented the loss of activated sludge in the reactor but also kept a high sludge concentration. Meanwhile, improving the biodiversity and stability of the sludge treatment system. © 2022, The Authors. All rights reserved.

关键词： Aerobic bacteria

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Efficiency of Submerged Ceramic Flat Membrane Bioreactor in the Treatment of Coal Chemical Wastewater

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SSRN 2022年

Coal chemical wastewater inhibits the development of the modern coal chemical industry. This study used a submerged ceramic flat membrane bioreactor to treat coal chemical wastewater. The treatment effect of ceramic flat membrane bioreactor and related influencing factors were studied. The Chemical Oxygen Demand (COD) concentration, ammonia nitrogen concentration, total phenol concentration, and turbidity of coal chemical wastewater could be reduced to below 31.4 mg/L, 3.03 mg/L, 3.76 mg/L, and 0.4 NTU. The ceramic flat membrane bioreactor achieved the optimal removal effect on pollutants when Hydraulic Retention Time (HRT) was 21 h, Dissolved Oxygen (DO) concentration was 3.2 ~ 4.0 mg/L and pH was 7.1 ~ 7.5. Among them, the total phenol removal ratio reached the maximum value of 95.31%, and the COD removal ratio remained at 93% ~ 94%, ammonia nitrogen removal ratio was stable at 95% ~ 97%. The microorganisms in the mixture and membrane mainly were aerobic bacteria, and the content of organic-degrading bacteria, nitrifying and denitrifying bacteria was high. The addition of a membrane module not only prevented the loss of activated sludge in the reactor but also kept a high sludge concentration. Meanwhile, improving the biodiversity and stability of the sludge treatment system. © 2022, The Authors. All rights reserved.

关键词： Aerobic bacteria

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Substantial transition to clean household energy mix in rural China

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National Science Review 2022年第7期9卷 137-151页

作者： Guofeng Shen Rui Xiong Yanlin Tian Zhihan Luo Bahabaike Jiangtulu Wenjun Meng Wei Du Jing Meng Yuanchen Chen Bing Xue Bin Wang Yonghong Duan Jia Duo Fenggui Fan Lei Huang Tianzhen Ju Fenggui Liu Shunxin Li Xianli Liu Yungui Li Mu Wang Ying Nan Bo Pan Yanfang Pan Lizhi Wang Eddy Zeng Chao Zhan Yilin Chen Huizhong Shen Hefa Cheng Shu Tao College of Urban and Environmental Sciences Peking University Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC)Nanjing University of Information Science and Technology Institute of Reproductive and Child Health Peking University Laboratory of Geographic Information Science School of Geographic Sciences East China Normal University The Bartlett School of Sustainable Construction University College London College of Environment Zhejiang University of Technology Institute of Applied Ecology Chinese Academy of Sciences Department of Epidemiology and Biostatistics School of Public Health Peking University College of Resources and Environment Shanxi Agricultural University Xinjiang Key Laboratory of Environmental Pollution and Bioremediation Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences National Engineering Technology Research Center for Desert-Oasis Ecological Construction Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences University of Chinese Academy of Sciences School of Geography and Tourism Anhui University School of Environment Nanjing University College of Geography and Environmental Science Northwest Normal University College of Geographical Science Qinghai Normal University Academy of Plateau Science and Sustainability College of Chemistry Chemical Engineering and Environment Minnan Normal University School of Environmental Science and Engineering Hubei Polytechnic University Department of Environmental Engineering Southwest University of Science and Technology College of Food Science Tibet Agricultural and Animal Husbandry University College of Geography and Ocean Sciences Yanbian University Faculty of Environmental Science and Engineering Kunming University of Science and Technology College of Geography and Environmental Science Henan University College of Ecology and Environment Hainan University School of Environment Ji

The household energy mix has significant impacts on human health and climate,as it contributes greatly to many health-and climate-relevant air *** to the well-established urban energy statistical system,the rural hous ehold energy statistical system is incomplete and is often associated with high *** a nationwide investigation,this study reve aled high contributions to energy supply from coal and biomass fuels in the rural household energy sector,while electricity comprised ～20%.Stacking(the use of multiple sources of energy) is significant,and the average number of energy types was 2.8 per *** to 2012,the consumption of biomass and coals in 2017 decreased by 45% and 12%,respectively,while the gas consumption amount increased by 204%.Increased gas and decreased coal consumptions were mainly in cooking,while decreased biomass was in both cooking(41%) and heating(59%).The time-sharing fraction of electricity and gases(E&G) for daily cooking grew,reaching 69% in 2017,but for space heating,traditional solid fuels were still dominant,with the national average shared fraction of E&G being only 20%.The non-uniform spatial distribution and the non-linear increase in the fraction of E&G indicated challenges to achieving universal access to modern cooking energy by 2030,particularly in less-developed rural and mountainous *** some non-typical heating zones,the increased share of E&G for heating was significant and largely driven by income growth,but in typical heating zones,the time-sharing fraction was <5 % and was not significantly increased,except in areas with policy *** intervention policy not only led to dramatic increases in the clean energy fraction for heating but also accelerated the clean cooking *** income,higher education,younger age,less energy/stove stacking and smaller family size positively impacted the clean energy transition.

关键词： household energy mix energy transition clean heating modern energy sustainable development

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Fish forewarning of comprehensive toxicity in water environment based on Bayesian sequential method

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Journal of Environmental Sciences 2021年第12期33卷 150-159页

作者： Kaifeng Rao Li Tang Xin Zhang Heyu Xiang Liang Tang Yong Liu Wei Wang Jie Jiang Mei Ma Yiping Xu Zijian Wang State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Shenzhen Monitoring Centre of Ecology and Environment Shenzhen 518049China Department of Basic Courses Beijing Union UniversityBeijing 100101China Faculty of Mathematics and Statistics Hubei UniversityWuhan 430062China CASA(Wuxi)Environmental Technology Co.Ltd. Wuxi 214024China College of Resources and Environment University of Chinese Academy of SciencesBeijing 101407China

Environmental impact of pollutants can be analyzed effectively by acquiring fish behavioral signals in water with biological behavior sensors. However, a variety of factors, such as the complexity of biological organisms themselves, the device error and the environmental noise, may compromise the accuracy and timeliness of model predictions. The current methods lack prior knowledge about the fish behavioral signals corresponding to characteristic pollutants, and in the event of a pollutant invasion, the fish behavioral signals are poorly discriminated. Therefore, we propose a novel method based on Bayesian sequential,which utilizes multi-channel prior knowledge to calculate the outlier sequence based on wavelet feature followed by calculating the anomaly probability of observed values. Furthermore, the relationship between the anomaly probability and toxicity is analyzed in order to achieve forewarning effectively. At last, our algorithm for fish toxicity detection is verified by integrating the data on laboratory acceptance of characteristic pollutants. The results show that only one false positive occurred in the six experiments, the present algorithm is effective in suppressing false positives and negatives, which increases the reliability of toxicity detections, and thereby has certain applicability and universality in engineering applications.

关键词： Bayesian sequential method Fish electrical signal Outlier detection Anomaly probability Time series forecasting

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Enhanced mid-latitude warming due to poleward shift of sea salt aerosols in a warmer future

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Science Bulletin 2025年

作者： Yang, Yang Yu, Yang Wang, Yujue Wang, Hailong Russell, Lynn M. Wang, Pinya Liao, Hong State Key Laboratory of Climate System Prediction and Risk Management/Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology/Joint International Research Laboratory of Climate and Environment Change Nanjing University of Information Science and Technology Nanjing210044 China School of Environmental Science and Engineering Nanjing University of Information Science and Technology Nanjing210044 China Frontiers Science Center for Deep Ocean Multispheres and Earth System Key Laboratory of Marine Environment and Ecology Ministry of Education of China Ocean University of China Qingdao266100 China Atmospheric Climate and Earth Sciences Division Pacific Northwest National Laboratory RichlandWA99352 United States Scripps Institution of Oceanography University of California San DiegoCA92093 United States

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Remarkable Ability of Pb(Ii) Capture from Water by Self-Assembled Metal-Phenolic Networks Prepared with Tannic Acid and Ferric Ions

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SSRN 2022年

作者： Yang, Luyang Qiu, Hui Ni, Wenxiang Zhang, Qingrui Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and Engineering Nanjing University of Information Science & Technology 219 Ningliu Road Nanjing210044 China State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao066004 China

The plant-derived chelators used for heavy metals removal have attracted increasing attention due to the low cost, strong coordination effect and environmental-benign feature. Herein, the natural polyphenol-based adsorbents (TA-Fe7 & TA-Fe12) were prepared with tannic acid (TA) and Ferric ions through a simple cross-linking self-assembly reaction at pH 7 and 12, respectively. Adsorption isotherms demonstrated that TA-Fe12 shows better adsorption ability towards Pb(II) than TA-Fe7 with the maximum adsorption capacity of 357.1 mg/g at 298 K, which can be attributed to the coordination between Pb(II) and phenolic hydroxyl groups of TA as well as the specific affinity of newly-formed iron oxides toward Pb(II). The evaluation of adsorption affinity indicated that the distribution coefficients Kd of TA-Fe12 for Pb(II) was apparently higher than other cations, revealing the excellent adsorptive selectivity of TA-Fe12 towards Pb(II). XPS study indicated that the better performance for TA-Fe12 can be attributed to the coordination between Pb(II) and phenolic hydroxyl groups on TA as well as the specific affinity of newly-formed iron oxides towards Pb(II). Fixed-bed tests indicated that the TA-Fe12 column can successively produce clean water with bed volumes of 9500 and 7860 ([Pb] 12 could be fully refreshed by 0.1 M HNO3 solution and retained constant adsorption efficiency in 10 adsorption-regeneration cycles. © 2022, The Authors. All rights reserved.

关键词： Adsorption

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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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Preparation of Clay/Biochar Composite Adsorption Particle and Performance for Ammonia Nitrogen Removal from Aqueous Solution

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Journal of Ocean University of China 2020年第3期19卷 729-739页

作者： HUANG Xiao BAI Jie LI Kuiran ZHAO Yangguo TIAN Weijun HU Chunhui College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China College of Marine Life Science Ocean University of ChinaQingdao 266003China Nanjing University of Information Science and Technology Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlNanjing 210044China

This study aimed to present a novel clay/biochar composite adsorption particle, which made from abandoned reed straw and clay to remove ammonia nitrogen(NH4^+-N) from micro-contaminated water. The removal performance of NH4^+-N by composite adsorption particle was monitored under different raw material proportions and initial NH4^+-N concentration. Besides, adsorption kinetics and adsorption isotherms were investigated to reveal the adsorption mechanisms. The results showed that NH4^+-N was effectively removed under optimal proportion of biochar, foaming agent and crosslinker with 20%, 3%, and 3%, respectively. The optimal contact time was 150 min and the best removal efficiency was 88.6% at initial NH4^+-N concentration of 20 mg L^-1. The adsorption performance was well described by the second order kinetic model and Freundlich model. The novel clay/biochar composite adsorption particle in this study demonstrated a high potential for NH4^+-N removal from surface water.

关键词： clay biochar composite adsorption particle ammonia nitrogen removal adsorption mechanism

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Concurrent Dominant Pathways of Multifunctional Products Formed from Nocturnal Isoprene Oxidation

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SSRN 2022年

作者： Li, Haiwei Cui, Long Huang, Yu Zhang, Yunjiang Wang, Junfeng Chen, Mindong Ge, Xinlei Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment Technology School of Environmental Sciences and Engineering Nanjing University of Information Science and Technology Nanjing210044 China Key Laboratory of Aerosol Chemistry and Physics Institute of Earth Environment Chinese Academy of Sciences Xi’an710061 China

Determination of dominant chemical pathways toward the formation of nocturnal secondary organic aerosols (SOA) remains ambiguous by which nitrogen oxides (NOx) always affect oxidation of volatile alkenes. Here, comprehensive chamber simulations on dark isoprene ozonolysis were conducted under different nitrogen dioxides (NO2) mixing ratios to exam multiple functionalized isoprene oxidation products. Aside from that the oxidation processes were concurrently driven by nitrogen radical (NO3) and small hydroxyl radicals (OH), ozone (O3) cycloaddition at isoprene was launched initially regardless of NO2 to rapidly form first-generation oxidation products, i.e., carbonyls and Criegee intermediates (CI) referred to carbonyl oxides. They could further undergo complicated self- and cross-reactions to produce alkylperoxy radicals (RO2). Corresponding to yields of the C5H10O3 tracer, weak OH pathway at night was credited to ozonolysis of isoprene but suppressed by unique NO3 chemistry. Following the ozonolysis of isoprene, NO3 played a crucial supplementary role in nighttime SOA formation. The ensuing production of gas-phase nitrooxy carbonyls (the first-generation nitrates) became dominant in the production of a sizeable pool of organic nitrates (RO2NO2). By contrast, isoprene dihydroxy dinitrates (C5H10N2O8) were outstanding with the elevated NO2, related to typical second-generation nitrates. As such, the yielding number concentrations of dark SOA were promoted to approximately 1.8 × 104 cm−3 but presented a nonlinear relation with excess high-NO2 condition. This study provides valuable insights into importance of multifunctional organic compounds from alkene oxidation to constitute nighttime SOA. © 2022, The Authors. All rights reserved.

关键词： Oxidation

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