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SSRN 2023年

作者： Zhu, Xiao Yuan, Xing Song, Zijian Peng, Yue Li, Junhua State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China China National Institute of Standardization Beijing100191 China

We report a phosphate-modified MnCe catalyst (P/MnCe) via a dual-balance modulation strategy for NOx and chlorobenzene (CB) synergistic catalytic control to solve the low selectivity and chlorine deposition issues. It exhibits higher NOx and CB conversions than MnCe below 300 ℃, and the NH3 unselective oxidation and extent of chlorine deposition are significantly suppressed. The bond length of Ce-O recovers from 2.18 Å in MnCe to 2.42 Å in P/MnCe, mitigating the over-strong reducibility of Mn. Moreover, phosphate provides more Brønsted and weaker Lewis acid sites, favoring CB nucleophilic substitutions and NOx reduction rather than chlorine deposition or N2O formation. Phosphate confines electrons transfer from surface cations to Cl by the orbital polarization effect. The lower extent of bonding orbitals mixture and narrower band gap are responsible for decreases in adsorption energies of Cl and energies barriers of HCl formation on the catalyst. © 2023, The Authors. All rights reserved.

关键词： Energy gap

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Scenario-based assessment and multi-objective optimization of urban development plan with carrying capacity of water system

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Frontiers of environmental Science & Engineering 2020年第2期14卷 97-108页

作者： Yilei Lu Yunqing Huang Siyu Zeng Can Wang School of Environment Tsinghus UniversityBeijing 100084China Environmental Simulation and Pollution Control State Key Joint Laboratory School of EnvironmentTsinghua UniversityBeijing 100084China

environmental impact assessments and subsequent regulation measures of urban development plans are critical to human progress toward sustainability,since these plans set the scale and structure targets of future socioeconomic development.A three-step methodology for assessing and optimizing an urban development plan focusing on its impacts on the water system was *** methodology first predicted the pressure on the water system caused by implementation of the plan under distinct scenarios then compared the pressure with the carrying capacity threshold to verity the system status;finally,a multi-objected the pressure with the carrying capacity threshold to verity the system status;finally,a multi-objective optimization method was used to propose regulation *** methodology enabled evaluation of the water system carrying state,taking socioeconomic development uncertainties into account,and multiple sets of improvement measures under different decisionmaker preferences were *** methodology was applied in the case of Zhoushan city in South-east *** assessment results showed that overloading problems occurred in 11 out of the 13 zones in Zhoushan,with the potential pressure varying from 1.1 to 18.3 times the carrying *** a basic regulation measure,and environmental efficiency upgrade could relieve the overloading in 4 zones and reduce 9%-63%of the *** optimization of industrial development showed that the pressure could be controlled under the carrying capacity threshold if the planned scale was reduced by 24%and the industrial structure was *** regulation schemes including a more suitable scale and structure with necessary efficiency standards are provided for decisionmakers that can help the case city approach a more sustainable development pattern.

关键词： Urban development plan Urban water system Carrying capacity Scenario analysis Multi-objective optimization

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Chinese Academy of Engineering released Global Engineering Fronts

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Frontiers of environmental Science & Engineering 2020年第4期14卷 1-2页

作者： Xu Wang Jiao Zhang Xi Lu Xia Huang State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

The Chinese Academy of Engineering(CAE),in conjunction with Clarivate Analytics and the Higher Education Press,released the report of Global Engineering Fronts on December 10th,*** report contains 93 global engineering research fronts and 94 global engineering development fronts on nine core engineering *** fronts were generated from both data mining and expert judgement so as to focus on the representative key points to present and guide the development of engineering science and technology.

关键词： technology. Global mining

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Efficient Catalytic Ozonation Via C-Sio2 Framework for Advanced Wastewater Treatment: Reactive Oxygen Species Evolution and Catalytic Mechanism

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SSRN 2022年

作者： Chen, Shuning Ren, Tengfei Zhang, Xiaoying Huang, Xia Zhang, Xiaoyuan State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China

Heterogeneous catalytic ozonation is attractive for water decontamination and catalyst is a core element. However, it is difficult to maintain high efficiency and stability of catalysts under stern conditions. In this study, we proposed Mn-C-SiO 2 -Framework (Mn-CSF) which contained stable silica core and robust carbon shell for efficient catalytic ozonation. The pseudo-first-order kinetic rate constant for oxalic acid removal of Mn-CSF catalytic ozonation was 160% and 875% higher than those of Mn-SiO 2 and pristine CSF, respectively. Mn-CSF was also proven effective in gasification wastewater treatment, where the COD was decreased to 46 mg·L −1 , 37% lower than that of Mn-SiO 2 . These results indicated that the graphitization carbon layer and Mn significantly enhanced the activity of the catalyst. Furthermore, a fulvic-like component and a protein-like component were recognized through 3D-EEM in coal gasification wastewater. It was proven that Mn-CSF catalytic ozonation exhibited higher fulvic-like component and protein-like component removal compared with ozonation. Moreover, ·O 2 − and 1 O 2 were identified to be responsible for organic degradation in this research. Sufficient external specific surface area and porous structure were important for complex wastewater treatment. Specifically, external specific surface area could enhance the degradation of macromolecular organics while porous structures were vital for smaller molecular pollutant removal. The results highlighted that Mn-CSF was a promising catalyst for advanced wastewater treatment, and this study provided new insight into reactive oxygen species evolution. © 2022, The Authors. All rights reserved.

关键词： Silica

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Development of a Bayesian Copula-based Spatial-temporal Method for Multivariate Drought Risk Analysis 2022

Development of a Bayesian Copula-based Spatial-temporal Meth...

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8th International Conference on Computing and Data Engineering, ICCDE 2022

作者： Yang, Xin Li, Yongping Huang, Guohe State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing100875 China Institute for Energy Environment and Sustainable Communities University of Regina ReginaSKS4S 0A2 Canada

ISBN: (纸本)9781450395717

In this study, a Bayesian copula-based spatial-temporal analysis (BCSA) method is developed for multivariate drought risk analysis. BCSA can help identify drought variables and to build dependent structure of variables (duration-severity and severity-area). BCSA was applied to a real case in Central Asia (1918-2018). Some major findings can be summarized: (i) Central Asia suffered 72 droughts in 1918-2018, and droughts are mainly concentrated in Karaganda and Kyzylorda states of Kazakhstan;(ii) drought is more frequent in spring and summer than autumn and winter;(iii) due to interaction effect on variables, joint guarantee rate is less than design guarantee rate, and joint guarantee rate can provide a new reference for drought project design;(v) when design dependability is 0.99, 0.98, 0.95, 0.90 and 0.80, multivariate drought risk would be 3%g1/47%, 6%g1/414%, 13%g1/427%, 23%g1/439% and 35%g1/452%, respectively. The above findings can provide decision support for drought mitigation and project management. © 2022 ACM.

关键词： Drought

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A Multi-Criteria Approach to Assess Interconnections Among the environmental, Economic, and Social Dimensions of Circular Economy

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SSRN 2023年

作者： Terra dos Santos, Luiz Carlos Giannetti, Biagio Fernando Agostinho, Feni Dalano Roosevelt Liu, Gengyuan de Almeida, Cecilia Maria Villas B. Post-graduation Program in Production Engineering Paulista University Brazil State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Beijing Normal University China

The debate about the negative impacts that production and consumption cause on the environment is in vogue. Strategies that point to a sustainable, healthy, and resilient path are being sought. One of these paths is the Circular Economy, which emerges as an alternative to reduce the socio-environmental impacts caused by the linear model of production-use-disposal, presenting opportunities to generate revenue, income, and wealth with circular processes. However, despite the circular economy being considered an essential strategy to improve overall performance toward sustainability in its three dimensions, recent research has shown that the predominant focus of circular approaches is on the economic and environmental dimensions. At the same time, the social aspects are little explored. This article addresses this problem, aiming to explore the environmental, economic, and social aspects of circular economy in three economic blocs from 2000 to 2020 using the Five Sector Sustainability Model, establishing a baseline to co-create an equitable and regenerative future. The results showed that ASEAN in the year 2000 occupied the first position in the general ranking, while the European Union had the best classification in the economic sector and Mercosur was the best ranked regarding social benefits. In 2020, while the European bloc was better positioned in the general ranking, the South American bloc occupied the last post in almost all sectors. Comparatively, the highest-ranked bloc in 2020 in overall sustainability is more in line with the UN SDG due to circular actions oriented towards the three fundamental pillars of sustainability. © 2023, The Authors. All rights reserved.

关键词： Sustainable development

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Ambient volatile organic compounds at a receptor site in the Pearl River Delta region:Variations,source apportionment and effects on ozone formation

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Journal of environmental Sciences 2022年第1期34卷 104-117页

作者： Yao Meng Junwei Song Lewei Zeng Yingyi Zhang Yan Zhao Xufei Liu Hai Guo Liuju Zhong Yubo Ou Yan Zhou Tao Zhang Dingli Yue Senchao Lai The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of Educationand Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution ControlSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006China Institute of Meteorology and Climate Research Karlsruhe Institute of TechnologyHermann-von-Helmholtz-Platz 1Eggenstein-Leopoldshafen 76344Germany Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong KongChina Guangdong Environmental Monitoring Center State Environmental Protection Key Laboratory of Regional Air Quality MonitoringGuangzhou 510308China Guangdong Polytechnic of Environmental Protection Engineering Foshan 528216China

We present the continuously measurements of volatile organic compounds(VOCs)at a receptor site(Wan Qing Sha,WQS)in the Pearl River Delta(PRD)region from September to November of *** average mixing ratios of total VOCs(TVOCs)was 36.3±27.9 ppbv with the dominant contribution from alkanes(55.5%),followed by aromatics(33.3%).The diurnal variation of TVOCs showed a strong photochemical consumption during daytime,resulting in the formation of ozone(O_(3)).Five VOC sources were resolved by the positive matrix factorization(PMF)model,including solvent usage(28.6%),liquid petroleum gas(LPG)usage(24.4%),vehicle exhaust(21.0%),industrial emissions(13.2%)and gasoline evaporation(12.9%).The regional transport air masses from the upwind cities of south China can result in the elevated concentrations of *** ratios of TVOCs/NO_(x)(1.53±0.88)suggested that the O_(3) formation regime at WQS site was VOC-limited,which also confirmed by a photochemical box model with the master chemical mechanism(PBM-MCM).Furthermore,the observation on high-O_(3) episode days revealed that frequent O_(3) outbreaks at WQS were mainly caused by the regional transport of anthropogenic VOCs especially for aromatics and the subsequent photochemical *** study provides valuable information for policymakers to propose the effective control strategies on photochemical pollution in a regional perspective.

关键词： Volatile organic compounds(VOCs) Pearl River Delta(PRD)region Source apportionment Ozone(O_(3)) Regional transport

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Ambient fine particulate matter and ozone pollution in China: synergy in anthropogenic emissions and atmospheric processes

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environmental Research Letters 2022年第12期17卷 123001-123001页

作者： Jiang, Yueqi Wang, Shuxiao Xing, Jia Zhao, Bin Li, Shengyue Chang, Xing Zhang, Shuping Dong, Zhaoxin State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing100084 China

Since 2013, China has taken a series of actions to relieve serious PM2.5 pollution. As a result, the annual PM2.5 concentration decreased by more than 50% from 2013 to 2021. However, ozone pollution has become more pronounced, especially in the North China Plain. Here, we review the impacts of anthropogenic emissions, meteorology, and atmospheric processes on ambient PM2.5 loading and components and O3 pollution in China. The reported influence of interannual meteorological changes on PM2.5 and O3 pollution during 2013-2019 ranged from 10%-20% and 20%-40%, respectively. During the same period, the anthropogenic emissions of NO x , SO2, primary PM2.5, NMVOC and NH3 are estimated to decrease by 38%, 51%, 35%, 11% and 17%, respectively. Such emission reduction is the main cause for the decrease in PM2.5 concentration across China. However, the imbalanced reductions in various precursors also result in the variation in nitrate gas-particle partitioning and hence an increase in the nitrate fraction in PM2.5. The increase of ozone concentration and the enhancement of atmospheric oxidation capacity can also have substantial impact on the secondary components of PM2.5, which partly explained the growth of organic aerosols during haze events and the COVID-19 shutdown period. The uneven reduction in NO x and NMVOC is suggested to be the most important reason for the rapid O3 increase after 2013. In addition, the decrease in PM2.5 may also have affected O3 formation via radiation effects and heterogeneous reactions. Moreover, climate change is expected to influence both anthropogenic emissions and atmospheric processes. However, the extent and pathways of the PM2.5-O3 interplay and how it will be impacted by the changing emission and atmospheric conditions making the synergetic control of PM2.5 and O3 difficult. Further research on the interaction of PM2.5 and O3 is needed to provide basis for a scientifically-grounded and effective co-control strategy. © 2022 The Author(s). P

关键词： Nitrates

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Sewage-Carried Antibiotic Resistant Genes (Args) Could Be Used for Wastewater-Based Epidemiology (Wbe) Surveillance?

SSRN

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SSRN 2022年

作者： Dong, Qian Liu, Yanchen Huang, Xia School of Environment State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua University Beijing100084 China

Sewage is an essential carrier for ARGs and can be used for the wastewater-based epidemiology (WBE) surveillance. This study carried out a one-year field trial in gravity sewerage to advance our understanding on the distribution and transport of ARGs in sewer systems. The distribution of ARGs at different sampling points of sewer system was insignificant, which was mainly affected by human emission. The correlation between ARGs and antibiotic residues was weak but the effect of seasonal temperature on ARGs abundance was significant, which further proved that the ARGs were mainly derived from human sources rather than in vitro selection. Metagenomic analysis revealed that those ARG were mainly distributed in the phyla of proteobacteria (47.51%) and antinobacteria (20.11%). Clustering analysis indicated that ARG hosts in sewage were mainly from human fasces which include human pathogenic bacteria, such as Prevotella, Kocuria and Propionibacterium. Potential risk of ARG transfer still exists because the ARG abundance was significantly correlated to intI 1 gene and bacteria in sewage. Our results demonstrate that ARG distribution in sewers were largely affected by human shedding, and thus the sewage surveillance could be an effective and economic method for the assessment and management of antibiotic resistance on population size. © 2022, The Authors. All rights reserved.

关键词： Sewage

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Citizen science meets eDNA:A new boom in research exploring urban wetland biodiversity

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environmental Science and Ecotechnology 2023年第4期16卷 65-68页

作者： Haowen Zhang Jianghua Yang Lijuan Zhang Xueping Gu Xiaowei Zhang Nanjing Foreign Language School 30 East Beijing RoadXuanwu DistrictNanjing210008China State Key Laboratory of Pollution Control&Resource School of the EnvironmentNanjing UniversityNanjing University Xianlin Campus163 Xianlin AvenueNanjing210023China Jiangsu Province Ecology and Environment Protection Key Laboratory of Chemical Safety and Health Risk Nanjing210023China

Summary The biodiversity of urban wetlands provides crucial ecosystem services and contributes to cities'***,such ecosystems are threatened by multiple stressors,such as climate change,environmental pollution,and species *** participation in biodiversity and ecological conservation is becoming an increasingly well-developed and valued approach worldwide.

关键词： biodiversity ecosystems pollution

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