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SSRN 2023年

作者： Li, Yushuang Li, Jinhui State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China

In the nationwide effort to address environmental issues caused by solid waste, more than 100 cities in China have been included in the list of national Zero Waste City (ZWC) construction projects. However, the absence of a standardized evaluation method hinders quantitative comparisons among these cities. To overcome this challenge, a comprehensive five-dimension evaluation method was developed, taking into account both the national indicators and city-specific construction indicator systems. After the construction indicator system was transformed to an evaluation one, data processing and weight assignment methods were applied to obtain evaluation results for each dimension using linear weighted synthesis. Subsequently, By combining the results from individual dimensions, an overall evaluation score was derived. Meanwhile, utilizing obstacle analysis models and weighted scores, critical areas requiring attention in ZWC construction could be identified. Empirical research was conducted on Shenzhen following this evaluation framework. The results revealed several key findings: 1) The quantitative score of ZWC performance in Shenzhen increased significantly from 58.9 to 108.3 after the implementation of the pilot project. 2) The dimensions of Management Measure, Support Capacity, and City Characteristic had achieved or approached full scores, indicating commendable progress. However, the Management Level dimension still had room for improvement. 3) While industrial waste management reached an excellent level and agricultural waste proved manageable, challenges persisted in domestic waste landfill and construction waste disposal. These aspects are considered weak points that may require longer-term efforts to address due to inherent objective conditions. © 2023, The Authors. All rights reserved.

关键词： Data handling

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Photodegradation of soluble microbial products(SMPs) from membrane bioreactor by GO-COOH/TiO2/Ag

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Journal of environmental Sciences 2020年第2期32卷 292-300页

作者： Shuyan Yu Xia Huang State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

This study aimed to explore a new degradation method-photocatalysis technology to polish membrane bioreactor(MBR) effluent, using 2,6-di-tert-butylphenol(2,6-DTBP) as a model soluble microbial product(SMP).2,6-DTBP is one of the predominant SMPs in MBR effluent, which is refractory and difficult to *** study developed a novel carboxylated graphene oxide/titanium dioxide/silver(GO-COOH/TiO2/Ag) nanocomposite to photodegrade 2,***-COOH/TiO2/Ag was successfully synthesized, using L-cysteine as the linker bonding TiO2/Ag to *** structural, morphological and optical properties of the GO-COOH/TiO2/Ag nanocomposite were characterized using various *** to synergistic effects, the GO-COOH/TiO2/Ag nanocomposite exhibited enhanced photocatalytic degradation performance under solar light irradiation when compared to TiO2, Ag and *** remove 25 mg/L 2,6-DTBP, the reaction time for GOCOOH/TiO2/Ag was only 30 min, faster than the 90 min required for pure TiO2 or *** addition, the 200 mg/L GO-COOH/TiO2/Ag nanocomposite aqueous solution showed the best performance under solar light, with 99% removal of 2,*** enhanced capability is likely due to the surface plasmon resonance(SPR) effect contributed by Ag nanoparticles(NPs) doped onto the *** addition, GO-COOH had a high effective surface area, which assisted in degrading the 2,6-DTBP through improved *** stability study showed that the photocatalytic activity of the GO-COOH/TiO2/Ag was stable enough for recycling multiple *** effective degradation performance and excellent stability demonstrates that the GO-COOH/TiO2/Ag nanocomposite can be a promising photocatalyst in the field of effluent SMP photodegradation, which solves the problem of the difficult biodegradation of highly toxic 2,6-DTBP.

关键词： Soluble microbial products (SMPs) 2,6-Di-tert-butylphenol (2,6-DTBP) Carboxylated graphene oxide/titanium dioxide/silver (GO-COOH/TiO2/Ag) nanocomposite Photocatalysis technology

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Analysis of the Drivers of Premature Death and Life Expectancy Reduction Associated with Global Pm2.5 pollution

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SSRN 2023年

作者： Wu, Dongdong State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Xinjiekouwai Street No. 19 Beijing100875 China

Quantitative assessment of the health risks due to PM2.5 is a global concern. This study systematically assessed the impact of PM2.5 on global and regional premature death and per capita life expectancy reduction (LER) from 1995-2019. The number of premature death due to PM2.5 increased from 3.25 million to 4.56 million during the study period;while the per capita life expectancy reduction increased from 0.91 to 1.03 years before decreasing to 0.95 years. The number of deaths and LER were declining in Europe and North America, while the opposite was observed in Asian and African countries. Population and age structure were pulling factors for premature death, with population contributing more to African countries (90%), while other countries were more susceptible to age structure;PM2.5 concentration was a puller and then a suppressor for both premature death and LER, and the medical level was always a suppressor. All countries should take action and cooperate to reduce the harmful effects of PM2.5 pollution on humans. (Image Presented) © 2023, The Authors. All rights reserved.

关键词： Health risks

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The role of plant uptake in total phosphorous and total nitrogen removal in vegetated bioretention cells using vetiver and cattail

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Chemosphere 2024年 364卷 143276页

作者： Narayanasamydamodaran, Sanjena Kumar, Nawnit Zuo, Jian'e State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China State Key Laboratory of Hydroscience and Hydraulic Engineering Tsinghua University Beijing China Institute of Environment and Ecology Tsinghua Shenzhen International Graduate School Shenzhen518055 China

Bioretention cells have emerged as a prominent strategy for mitigating pollutant loads within urban stormwater runoff. This study delves into the role of plant uptake in the simultaneous removal of nitrogen and phosphorus compounds within these systems. Three bioretention cells—CP, P1, and P2—were constructed using local soil, C33 sand, and gravel. CP served as the unvegetated control, while P1 and P2 were vegetated with vetiver and cattail, respectively. The removal efficiencies of NO₃⁻-N, NH₃⁻-N, NO₂⁻-N, TN, TP, and COD from rainwater were evaluated under saturated and unsaturated conditions. The unvegetated control reactor (CP) achieved TN and TP removal rates of 40.44% and 82.52%, respectively. Reactor P1 (vetiver) demonstrated TN and TP removal rates of 62.92% and 97.19%, respectively. Reactor P2 (cattail) showed TN and TP removal rates of 49.71% and 87.78%, respectively. With the introduction of a saturation zone, TN removal efficiencies increased to 51.69%, 89.22%, and 79.91% for CP, P1, and P2, respectively. However, TP removal efficiencies decreased to 74.81%, 95.04%, and 84.58% for CP, P1, and P2, respectively. Plant tissue uptake tests indicated that vetiver could retain 5 times more TN and twice as much TP compared to cattail. This enhanced performance is attributed to vetiver's high photosynthetic potential as a C4 plant, resilience to varying environmental and nutrient conditions, extensive root network, secretion of oil sesquiterpenes from its root cortex, and the presence of arbuscular mycorrhizal fungi, which secrete glomalin, a substance that promotes water retention and nutrient uptake. Findings from this study indicate that the efficacy of traditional bioretention cells can be augmented through the strategic selection and integration of locally adapted plant species, coupled with the incorporation of saturation zones, to enhance pollutant removal capabilities and resilience to drought conditions. © 2024

关键词： Nitrogen removal

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CeO_(2) doping boosted low-temperature NH3-SCR activity of FeTiOx catalyst:A microstructure analysis and reaction mechanistic study

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Frontiers of environmental Science & Engineering 2022年第5期16卷 69-81页

作者： Wei Tan Shaohua Xie Wenpo Shan Zhihua Lian Lijuan Xie Annai Liu Fei Gao Lin Dong Hong He Fudong Liu Department of Civil Environmentaland Construction EngineeringCatalysis Cluster for Renewable Energy and Chemical Transformations(REACT)NanoScience Technology Center(NSTC)University of Central FloridaOrlandoFL32816USA Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringJiangsu Key Laboratory of Vehicle Emissions ControlSchool of EnvironmentCenter of Modern AnalysisNanjing UniversityNanjing 210023China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Institute of Engineering Technology Sinopec Catalyst Co.Ltd.Sinopec GroupBeijing 101111China

FeTiOx has been recognized as an environmental-friendly and cost-effective catalyst for selective catalytic reduction(SCR)of NOx with *** at further improving the low-temperature DeNOx efficiency of FeTiOx catalyst,a simple strategy of CeO_(2) doping was *** low-temperature(<250°C)NH3-SCR activity of FeTiOx catalyst could be dramatically enhanced by CeO2 doping,and the optimal composition of the catalyst was confirmed as FeCe_(0.2)TiOx,which performed a NOx conversion of 90%at ca.200°*** to X-ray diffraction(XRD),Raman spectra and X-ray absorption fine structure spectroscopy(XAFS)analysis,FeCe_(0.2)TiOx showed low crystallinity,with Fe and Ce species well mixed with each *** on the fitting results of extended X-ray absorption fine structure(EXAFS),a unique Ce-O-Fe structure was formed in FeCe_(0.2)TiOx *** well improved specific surface area and the newly formed Ce-O-Fe structure dramatically contributed to the improvement of the redox property of FeCe_(0.2)TiOx catalyst,which was well confirmed by H2-temperature-programmed reduction(H2-TPR)and in situ XAFS *** enhanced redox capability could benefit the activation of NO and NH_(3) at low temperatures for NOx *** detailed reaction mechanism study further suggested that the facile oxidative dehydrogenation of NH_(3) to highly reactive-NH_(2) played a key role in enhancing the low-temperature NH_(3)-SCR performance of FeCe_(0.2)TiOx catalyst.

关键词： NH3-SCR CeO_(2)doping Low-temperature NOx removal Improved redox property In situ XAFS analysis

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Unraveling climate change-induced compound low-solar-low-wind extremes in China

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国家科学评论（英文版） 2025年第1期12卷 92-105页

作者： Licheng Wang Yawen Liu Lei Zhao Xi Lu Liangdian Huang Yana Jin Steven J.Davis Amir Aghakouchak Xin Huang Tong Zhu Yue Qin College of Environmental Sciences and Engineering Peking UniversityBeijing 100871China Institute of Carbon Neutrality Peking UniversityBeijing 100871China School of Atmospheric Sciences Nanjing UniversityNanjing 210023China Department of Civil and Environmental Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA National Center for Supercomputing Applications University of Illinois at Urbana-ChampaignUrbanaIL 61801USA School of Environment State Key Joint Laboratory of Environment Simulation and Pollution ControlTsinghua UniversityBeijing 100084China Department of Earth System Science University of CaliforniaIrvineIrvineCA 92697USA Department of Earth System Science University of CaliforniaIrvineIrvineCA 92697USA Department of Civil and Environmental Engineering University of CaliforniaIrvineIrvineCA 92697USA

China's pursuit of carbon neutrality targets hinges on a profound shift towards low-carbon energy,primarily reliant on intermittent and variable,yet crucial,solar and wind power *** particular,low-solar-low-wind(LSLW)compound extremes present a critical yet largely ignored threat to the reliability of renewable electricity *** existing studies have largely evaluated the impacts of average climate-induced changes in renewable energy resources,comprehensive analyses of the compound extremes and,particularly,the underpinning dynamic mechanisms remain *** we show the dynamic evolution of compound LSLW extremes and their underlying mechanisms across China via coupling multi-model simulations with diagnostic *** results unveil a strong topographic dependence in the frequency of compound LSLW extremes,with a national average frequency of 16.4(10th-90th percentile interval ranges from 5.3 to 32.6)days/yr,when renewable energy resources in eastern China are particularly compromised(～80％lower than that under an average climate).We reveal a striking increase in the frequency of LSLW extremes,ranging from 12.4％under SSP126 to 60.2％under SSP370,primarily driven by both renewable energy resource declines and increasingly heavily-tailed distributions,resulting from weakened meridional temperature(pressure)gradient,increased frequency of extremely dense cloud cover and additional distinctive influence of increased aerosols under *** study underscores the urgency of preparing for significantly heightened occurrences of LSLW events in a warmer future,emphasizing that such climate-induced compound LSLW extreme changes are not simply by chance,but rather projectable,thereby underscoring the need for proactive adaptation *** insights are crucial for countries navigating a similar transition towards renewable energy.

关键词： wind energy solar energy renewable energy climate change compound energy droughts

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Analysis of the Drivers of Premature Death and Life Expectancy Reduction Associated with Global Pm2.5 pollution

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SSRN 2023年

作者： Wu, Dongdong State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Xinjiekouwai Street No. 19 Beijing100875 China

关键词： Health risks

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Progress of Air pollution control in China and Its Challenges and Opportunities in the Ecological Civilization Era

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Engineering 2020年第12期6卷 1423-1431页

作者： Xi Lu Shaojun Zhang Jia Xing Yunjie Wang Wenhui Chen Dian Ding Ye Wu Shuxiao Wang Lei Duan Jiming Hao State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China

China’s past economic growth has substantially relied on fossil fuels,causing serious air pollution *** economic growth and pollution has become the focus in developing ecological civilization in *** have analyzed the three-decade progress of air pollution controls in China,highlighting a strategic transformation from emission control toward air quality *** control of sulfur dioxide(SO2)resolved the deteriorating acid rain issue in China in *** 2013,control actions on multiple precursors and sectors have targeted the reduction of the concentration of fine particulate matter(PM2.5),marking a transition to an air-quality-oriented *** ozone(O3)pollution further requires O3 and PM2.5 integrated control strategies with an emphasis on their complex photochemical *** improvement of air quality in China,as a key indicator for the success of ecological civilization construction,demands the deep de-carbonization of China’s energy system as well as more synergistic pathways to address air pollution and global climate change simultaneously.

关键词： Air pollution control Ecological civilization PM2.5 Low-carbon development Ozone

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An Ecological-Network Input–Output Clustering Model for Analyzing CO2 Emission System 7th

An Ecological-Network Input–Output Clustering Model for Ana...

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Proceedings of 2022 7th International Conference on environmental Engineering and Sustainable Development (CEESD 2022)

作者： Wang, P.P. Huang, G.H. Li, Y.P. 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 Beijing100875 China Faculty of Engineering and Applied Science University of Regina ReginaSKS4S 0A2 Canada

ISBN: (纸本)9783031281921

Excessive carbon dioxide (CO2) emission has been challenges to regional sustainable development. In this study, an ecological-network input–output clustering (ENIOC) model is developed to analyze CO2 emission system. ENIOC can recognize the complex characteristics and relationships within CO2 emission system from network and statistical perspectives. ENIOC is applied to Jiangsu. Some major findings are as follows: (i) electricity-heat supply and metal smelting industries are dominant CO2 emission contributors (i.e., 16.4% and 12.3% of the total CO2 emission, respectively);also, they provide plenty of carbon-intensive products for supporting construction and heavy industries;(ii) the CO2 emission system is relatively unstable;optimize the structure of key pathways (e.g., mining → metal smelting → metal products) could mitigate CO2 emission across the supply chain;(iii) CO2 mitigation policy should focus on the sectors in cluster 2 (e.g., chemical, metal product and equipment industries) to reduce their dependency on carbon-intensive products from other sectors;CO2 mitigation policy also should focus on metal smelting and electricity-heat supply industries (i.e., the sectors in cluster 3) to improve their efficiencies of energy use. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Carbon dioxide

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Single-atom Pd anchored in the porphyrin-center of ultrathin 2D-MOFs as the active center to enhance photocatalytic hydrogen-evolution and NO-removal

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Chinese Chemical Letters 2024年第9期35卷 364-368页

作者： Xingyan Liu Chaogang Jia Guangmei Jiang Chenghua Zhang Mingzuo Chen Xiaofei Zhao Xiaocheng Zhang Min Fu Siqi Li Jie Wu Yiming Jia Youzhou He Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067China School of Pharmacy North Sichuan Medical CollegeNanchong 637100China Carbon Neutrality Technology Application Research Center College of River and Ocean EngineeringChongqing Jiaotong UniversityChongqing 400074China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China National Local Joint Engineering Research Center for Road Engineering and Disaster Prevention and Reduction Technology in Mountainous Areas China Merchants Chongqing Communications Technology Research and Design Institute Co.Ltd.Chongqing 400067China Chongqing Culture Relics and Archaeology Research Institute Chongqing 400013China

Single-atom catalysts were widely used to treat atmospheric pollution and alleviate energy crises through ***,how to prevent the aggregation of single atoms during the preparation and catalytic processes remained a great ***,a novel ultrathin two-dimensional porphyrin-based single-atom photocatalyst Ti-MOF(abbreviated as TMPd)obtained through a simple hydrothermal synthesis strategy was used for photocatalytic hydrogen evolution and NO removal,in which the singleatom Pd tightly anchored in the center of porphyrin to ensure single-atom Pd stable *** with most reported MOFs-based photocatalysts,the TMPd showed an excellent hydrogen evolution rate(1.32 mmol g^(-1)h^(-1))and the NO removal efficiency(62%)under visible light *** high-angle annular dark-field scanning transmission electron microscope(HAADF-STEM)and synchrotron-radiation-based X-ray absorption fine-structure spectroscopy(XAFS)proved that pd in TMPd existed in an isolated state,and the atomic force microscope(AFM)proved the ultrathin morphology of *** calculations had demonstrated that single-atom Pd could serve as the active center and more effectively achieve electron transfer,indicating that single-atom Pd played a vital role in photocatalytic hydrogen *** addition,a possible photocatalytic pathway of NO removal was proposed based on ESR and in-situ infrared spectra,in which the catalysts anchored with single-atom Pd could produce more active substances and more effectively oxidize NO to NO_(2)^(-)or NO_(3)^(-).The results suggested that coordinating single-atom metal species as the active site in the center of porphyrin could be a feasible strategy to obtain various ultrathin porphyrin-based single-atom photocatalysts to acquire excellent photocatalytic performance further.

关键词： Porphyrin-based MOFs Single-atom Pd Ultrathin 2D nanosheets Hydrogen evolution NO removal

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