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Vehicle emissions of primary air pollutants from 2009 to 2019 and projection for the 14th Five-Year Plan period in Beijing, China

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Journal of environmental Sciences 2023年第2期124卷 513-521页

作者： Tongran Wu Yangyang Cui Aiping Lian Ye Tian Renfei Li Xinyu Liu Jing Yan Yifeng Xue Huan Liu Bobo Wu National Engineering Research Center of Urban Environmental Pollution Control Beijing Municipal Research Institute of Environmental ProtectionBeijing 100037China Beijing Municipal Ecology and Environment Bureau Beijing 100048China State Key Joint Laboratory of ESPC School of EnvironmentTsinghua UniversityBeijing 100084China School of Ecology and Environment Beijing Technology and Business UniversityBeijing 100048China

Over the past decade,the emission standards and fuel standards in Beijing have been upgraded twice,and the vehicle structure has been improved by accelerating the elimination of 2.95 million old *** the formulation and implementation of these policies,the emissions of carbon monoxide(CO),volatile organic compounds(VOCs),nitrogen oxides(NO_(x)),and fine particulate matter(PM_(2.5))in 2019 were 147.9,25.3,43.4,and 0.91 kton in Beijing,*** emission factor method was adopted to better understand the emissions characteristics of primary air pollutants from combustion engine vehicles and to improve pollution *** combination with the air quality improvement goals and the status of social and economic development during the 14th Five-Year Plan period in Beijing,different vehicle pollution control scenarios were established,and emissions reductions were *** results show that the emissions of four air pollutants(CO,VOCs,NO_(x),and PM_(2.5))fromvehicles in Beijing decreased by an average of 68% in 2019,compared to their levels in *** contribution of NOx emissions from diesel vehicles increased from 35% in 2009 to 56% in 2019,which indicated that clean and energy-saving diesel vehicle fleets should be further *** vehicle adoption could be an important measure to reduce pollutant *** the further upgrading of vehicle structure and the adoption of electric vehicles,it is expected that the total emissions of the four vehicle pollutants can be reduced by 20%-41% by the end of the 14th Five-Year Plan period.

关键词： Emission variations Vehicle structure Electric vehicle 14th Five-Year Plan Air pollution

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Experimental and theoretical investigation on degradation of dimethyl trisulfide by ultraviolet/peroxymonosulfate: Reaction mechanism and influencing factors

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Journal of environmental Sciences 2023年第5期127卷 824-832页

作者： Jianing Sun Xiaodong Xin Shaohua Sun Zhenqi Du Zhenxing Yao Mingquan Wang Ruibao Jia Shandong Province Water Supply and Drainage Monitoring Center Jinan 250101China School of Water Conservancy and Environment University of JinanJinan 250022China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China

With a large amount of domestic sewage and industrial wastewater discharged into the water bodies,sulfur-containing organicmatter inwastewater produced volatile organic sulfide,such as dimethyl trisulfide(DMTS)throughmicroorganisms,caused the potential danger of drinking water safety and human *** present,there is still a lack of technology on the removal of *** this study,the ultraviolet/peroxymonosulfate(UV/PMS)advanced oxidation processes was used to explore the degradation of *** than 90%of DMTS(30μg/L)was removed under the conditions of the concentration ratio of DMTS to PMS was 3:40,the temperature(T)was 25±2℃,and 10 min of irradiation by a 200 W mercury lamp(365 nm).The kinetics rate constant k of DMTS reacting with hydroxyl radical(HO·)was determined to be 0.2477 min^(−1).Mn^(2+),Cu^(2+)and NO_(3)^(-)promoted the degradation of DMTS,whereas humic acid and Cl-in high concentrations inhibited the degradation *** chromatography-mass spectrometry was used to analyze the degradation products and the degradation intermediates were dimethyl disulfide and *** functional theory was used to predict the possible degradation mechanism according to the frontier orbital theory and the bond breaking mechanism of organic *** results showed that the S–S,C–S and C–H bonds in DMTS molecular structure were prone to fracture in the presence of free radicals,resulting in the formation of alkyl radicals and sulfur-containing radicals,which randomly combined to generate a variety of degradation products.

关键词： Ultraviolet/peroxymonosulfate Dimethyl trisulfide Products Density functional theory Degradation mechanism

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Comparing the costs and benefits of virgin and urban mining

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Journal of Management Science and Engineering 2022年第1期7卷 98-106页

作者： Xianlai Zeng Tongxin Xiao Guochang Xu Eva Albalghiti Guijuan Shan Jinhui Li State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China School of Forestry and Environmental Studies Yale UniversityNew HavenCT06511USA

Resource and environmental management are shaping our society and *** mining is rapidly becoming unsustainable as primary resources are in increasingly short supply and energy consumption continues to *** mining through a circular economy has emerged as a promising option for securing copper and aluminum ***,the sustainability and viability of this circular economy industry are heavily dependent on its ***,we demonstrate the economic benefits of urban mining for anthropogenic minerals:e-waste,end-of-life vehicles,waste wiring and *** material and cost flows associated with urban mining are deeply *** life cycle cost and cost-benefit analysis,the cost of obtaining one ton of copper or aluminum is found to be,on average,3,000 US$or 1,660 US$,which is significantly lower than the cost of virgin ***,in terms of the costs and benefits,copper may differ tremendously from aluminum depending on the type of anthropogenic *** additional regulations or policies enactment need to reinforce the urban mining and circular economy.

关键词： Circular economy Resource sustainability Cost-benefit analysis Urban mining Virgin mining

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Atmospheric Radical Chemistry Evolution: A Chemical Scan of the Atmosphere

ACS ES&T Air

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ACS ES&T Air 2024年第11期1卷 1329-1332页

作者： Keding Lu Zhaofeng Tan State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and Engineering Peking University Beijing 100871 China

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Microbial Electrosynthesis for Producing Medium Chain Fatty Acids

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Engineering 2022年第9期16卷 141-153页

作者： Na Chu Wen Hao Qinglian Wu Qinjun Liang Yong Jiang Peng Liang Zhiyong Jason Ren Raymond Jianxiong Zeng Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China College of Architecture and Environment Sichuan UniversityChengdu 610065China Department of Civil and Environmental Engineering&Andlinger Center for Energy and the Environment Princeton UniversityPrincetonNJ 08544USA

Microbial electrosynthesis(MES)employs microbial catalysts and electrochemistry to enhance CO_(2)bioconversion to organics with concurrent waste biorefining *** aim of this review is to comprehensively discuss the current state of the art and prospects of medium chain fatty acids(MCFAs)production in MES from CO_(2)and organic *** mechanisms and development of MCFAs production via conventional fermentation are introduced as *** on MCFAs production in MES are summarized,highlighting the strategy of multiple-electron donors(EDs).Challenges for MCFAs production in MES from CO_(2)are presented,and the primary discussions included methanogenesis inhibition,adenosine triphosphate(ATP)limitations of acetogens,and production of limited EDs via *** applications of electrochemical approaches to promote the bioconversion of actual waste materials with MCFAs production are ***,future directions are explored,including multi-stage reactions,substrate supply,product extraction,and microbial pathways.

关键词： Electro-fermentation Microbial electrochemistry Acetogen Chain elongation Electroactive microorganism

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Developing zirconium xerogel coagulants for deep removal of phosphorous

Environmental Surfaces and Interfaces

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environmental Surfaces and Interfaces 2024年第1期2卷 66-74页

作者： Haoming Zhang Yonghai Gan Wenchang Zhang Shuangshuang Wei Shujuan Zhang State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University 210023 China

Deep removal of phosphorous (P) from water is a necessary measure to solve the eutrophication problem. Coagulation is both a basic treatment method for P removal and an important pretreatment process for membrane filtration. However, few coagulants can meet the both requirements. Based on the analysis on the hydrolysis behaviors of some earth-abundant metals and the solubility products of their phosphates, a series of zirconium xerogel coagulants (ZXC) was fabricated with a novel approach (the sol-gel method) and was evaluated for the removal of both organic and inorganic P in coagulation and coagulation-ultrafiltration. In terms of P removal and anti-fouling of membrane, the resultant ZXC outperformed polyzirconium chloride (PZC), polyaluminum chloride (PAC), polyferric sulfate (PFS), as well as titanium xerogel coagulant (TXC) in a wide range of pH and dose. The rapid hydrolysis of Zr 4+ and the formation of Zr 3 (PO 4 ) 4 with a rather low solubility product are attributable to the great performance of ZXC in coagulation. This study highlights the potential of ZXC as an effective solution for enhancing the treatment of water and wastewater, particularly in achieving deep P removal and improving membrane fouling resistance, thereby contributing to more sustainable and efficient strategies for addressing eutrophication and pollutant removal.

关键词： Coagulation Phosphate Membrane fouling Turbidity Zirconium Sol-gel

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Screening legacy and emerging organic pollutants in the contaminated soil of Dhaka,Bangladesh

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Emerging Contaminants 2024年第3期10卷 343-353页

作者： Refayat Nigar Shizhen Zhao Xin Liu Huanfang Huang Lele Tian Yuwei Xiao Ahsan Habib Gan Zhang State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510640China Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization Guangzhou510640China Anti-Drug Technology Center of Guangdong Province and National Anti-Drug Laboratory Guangdong Regional Center Guangzhou510230China State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control South China Institute of Environmental SciencesMinistry of Ecology and EnvironmentGuangzhou510530China Department of Chemistry University of DhakaDhaka1000Bangladesh University of Chinese Academy of Sciences Beijing100049China

The current understanding of the legacy and emerging organic pollutants in the soil of Bangladesh remains *** disposal practices,particularly in e-waste,landfills,and industrial operations,may lead to the pervasive presence of persistent organic pollutants(POPs)and polycyclic aromatic hydrocarbons(PAHs)in the *** study aimed to systematically investigate the concentrations,sources,and risk assessment of halogenated flame retardants(HFRs),polychlorinated biphenyls(PCBs),polychlorinated naphthalenes(PCNs),organochlorine pesticides(OCPs),chlorinated paraffins(CPs),and PAHs in the contaminated soil of Dhaka's dumpsites,e-waste,and industrial areas collected in *** total concentration of investigated pollutants averaged at 4790±4040 ng g^(-1)dw,with the following order:P44CPs(4110±4140 ng g^(-1)dw)>P16PAHs(422±491 ng g^(-1)dw)>P16HFRs(190±538 ng g^(-1)dw)>P209PCBs(43.5±73.5 ng g^(-1)dw)>P50PCNs(17.7±21.0 ng g^(-1)dw)>P27OCPs(9.41±9.61 ng g^(-1)dw).The e-waste site exhibited the highest total concentration of the target pollutants,reaching 12,700 ng g1 *** were the predominant contributors,accounting for averages of 81.8%,70.5%,and 68.5%to waste landfills,e-waste,and industrial sites,respectively.A comprehensive analysis of 209 PCB congeners revealed their primary origin from Aroclor PCBs,with minor contributions from unintentionally produced *** highest incremental lifetime carcinogenic risk(ILCR)occurred in e-waste sites,contributed by dioxin-like PCBs,with a maximum value of 5.9×10^(-5)for adults,exceeding the limit 1.0×10^(-6)set by the *** non-carcinogenic hazard quotients(HQs)were much lower,suggesting no significant risk from the investigated *** findings highlight the importance of proper waste management and regulated e-waste recycling to mitigate potential hazardous risks to the Bangladeshi population.

关键词： Persistent organic pollutants Polycyclic aromatic hydrocarbons Chlorinated paraffins Polychlorinated biphenyls Risk assessment Contaminated soil Bangladesh

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Response to Comment on "Comparison of Detection Methods of Microplastics in Landfill Mineralized Refuse and Selection of Degradation Degree Indexes"

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environmentAL SCIENCE & TECHNOLOGY 2022年第2期56卷 1471-1472页

作者： Zhang, Ying Peng, Yawen Peng, Chu Wang, Ping Lu, Yuan He, Xiaosong Wang, Lei MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control College of Environmental Science and Engineering Nankai University Tianjin 300350 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing 100012 China State Environmental Protection Key laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing 100012 China

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Seasonal changes of chemodiversity along with microbial succession in a municipal wastewater treatment plant

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Journal of environmental Sciences 2025年第4期150卷 318-331页

作者： Yunwei Cui Junya Zhang Luoyao Wen Jibao Liu Zhineng Hao Chunzhong Wei Yanbo Jiang Yuansong Wei Peihong Shen College of Life Science and Technology Guangxi UniversityNanning 530005China State Key Joint Laboratory of Environmental Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Guangxi Beitou Environmental Protection&Water Group Co. LTD.Nanning 530025China

The relationship between chemodiversity and microbial succession in wastewater treatment plants(WWTPs)is highly intricate and *** specific contribution of the microbial community to changes in the composition of dissolved organic matter(DOM)within different biological treatment units remains unclear,as does the reciprocal influence of DOM composition on microbial *** this study,spectroscopy((Excitationemission matrix)EEM-PARAFAC,Ultraviolet(UV)-spectrum,Fourier transform infrared spectrometer(FT-IR)),Liquid chromatograph mass spectrometer(LC–MS)and Fourier transform ion cyclotron resonance(FT-ICR)MS along with high-throughput sequencing technology were used to explore the relationship between chemodiversity and microbial succession in WWTPs concerning seasonal *** results showed that WWTPs with anaerobic/anoxic/oxic(A2O)processes can metabolize and transformmost of thewastewater DOM,and the anaerobic unit has the highest removal rate for fluorescence DOM(FDOM,14.07%-64.43%);the anaerobic unit increased aliphatic/proteins and lignin-like molecules but decreased relative intensity,while the anoxic unit removed unsaturated hydrocarbons,aromatic structures,and lignin-like *** impact of seasonal changes on the composition and removal of FDOM and DOM in wastewater treatment is significant,and the variations that occur during different seasons affect microbial activity,as well as the production,degradation,and transformation of organic compounds throughout thewastewater treatment *** analysis shows that Parcubacteria_genera_incertae_sedis plays a crucial role in DOM chemodiversity,highlighting the crucial contribution of microbial com-munities to both the structure and operation of the entire DOM *** results in this study could provide some theoretical and practical basis for guiding the process optimiza-tion of WWTPs.

关键词： Wastewater treatment plant Dissolved organic matter Fourier transform ion cyclotron resonance mass spectrometry Chemodiversity Microbial community

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Investigation of suitable precursors for manganese oxide catalysts in ethyl acetate oxidation

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Journal of environmental Sciences 2021年第6期33卷 17-26页

作者： Yan Zhang Meng Wang Shunyu Kang Tingting Pan Hua Deng Wenpo Shan Hong He Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo Urban Environment Observation and Research StationChinese Academy of SciencesNingbo 315800China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

The control of ethyl acetate emissions from fermentation and extraction processes in the pharmaceutical industry is of great importance to the *** have developed three Mn_(2)O_(3)catalysts by using different Mn precursors(MnCl_(2),Mn(CH_(3)COO)_(2),MnSO_(4)),named as Mn_(2)O_(3)-Cl,-Ac,-SO_(4).The tested catalytic activity results showed a sequence with Mn precursors as:Mn_(2)O_(3)-Cl>Mn_(2)O_(3)-Ac>Mn_(2)O_(3)-SO_(4).The Mn_(2)O_(3)-Cl catalyst reached a complete ethyl acetate conversion at 212℃(75℃lower than that of Mn_(2)O_(3)-SO_(4)),and this high activity 100%could be maintained high at 212℃for at least 100 *** characterization data about the physical properties of catalysts did not show an obvious correlation between the structure and morphology of Mn_(2)O_(3)catalysts and catalytic performance,neither was the surface area the determining factor for catalytic activity in the ethyl acetate *** we firstly found there is a close linear relationship between the catalytic activity and the amount of lattice oxygen species in the ethyl acetate oxidation,indicating that lattice oxygen species were essential for excellent catalytic *** H_(2)temperature-programmed reduction(H_(2)-TPR)results,we found that the lowest initial reduction temperature over the Mn_(2)O_(3)-Cl had stronger oxygen mobility,thus more oxygen species participated in the oxidation reaction,resulting in the highest catalytic *** convenient preparation,high efficiency,and stability,Mn_(2)O_(3)prepared with MnCl_(2)will be a promising catalyst for removing ethyl acetate in practical application.

关键词： Ethyl acetate Catalytic oxidation Manganese Precursor Lattice oxygen species

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