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Historical inventories and future scenarios of multiple hazardous air pollutants (HAPs) emissions from the iron and steel production industry in China

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Science of the Total environment 2025年 958卷 178051页

作者： Yang, Junqi Tian, Hezhong Fu, Zhiqiang Bai, Xiaoxuan Wang, Kun Liu, Wenjun Lu, Yiping Zhou, Yu Zhao, Hongyan Cui, Jiangyu Du, Qinwei State Key Joint Laboratory of Environmental Simulation & Pollution Control School of Environment Beijing Normal University Beijing100875 China Center for Atmospheric Environmental Studies Beijing Normal University Beijing100875 China Beijing100045 China Institute of Urban Safety and Environmental Science Beijing Academy of Science and Technology Beijing100054 China

Iron and steel production (ISP) is one of significant atmospheric pollution emission sources in China. With the implementation of ultra-low emission (ULE) standards, a detailed and new updated emission inventory is urgently needed for better understanding of the temporal trends and spatial variation of emission characteristics. In this study, a unit-based comprehensive emission inventory of multiple hazardous air pollutants (HAPs) for the Chinese ISP spanned from 2012 to 2021, including the conventional pollutants, 13 kinds of Trace elements as well as 2 unconventional but toxic pollutants (PCDD/Fs, F), was dedicatedly developed by integrating dynamic localized emission factors with unit-based information of both the detailed activity level and abatement technology application. Scenario analyses were also conducted to forecast future emission trends up to 2050. The results showed that the lower emission factors owing to ULE retrofits had resulted in different spatial-temporal emission characteristics between outputs and HAPs emissions. The atmospheric emissions of SO2, NOX, PM2.5, PM10, TSP, F and PCDD/Fs from Chinese ISP in 2021 were estimated at about 414.4, 450.5, 1044.3, 2001.6, 3958.8, 9.42 kt and 9.35 kg-TEQ, respectively. And most HAPs emissions were lower than those in 2012. Regarding the spatial distribution, Hebei, Jiangsu, Shanxi, ranked as the top 3 emission provinces. Moreover, different manufacturing processes (sintering, blast furnace, steel making, etc.) contributed with different magnitude for specific species, and the future trends estimation showed a great reducing potential caused by the implementation of ULE abatement measures and structure adjustment in future. © 2024 Elsevier B.V.

关键词： Iron and steel industry

Online Analysis of Volatile and Semivolatile Organic Compounds in Water Matrices Using a Dual-Channel Comprehensive Two-Dimensional Gas Chromatography Coupled with Time-of-Flight Mass Spectrometry System

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SSRN 2024年

作者： Chen, Guangxu Wu, Manman Ma, Qin Li, Mei Zhou, Zhen Xu, Jingwei Waterhouse, Geoffrey I.N. Song, Ninghui Zhao, Wei-Wei School of Environment and Energy State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control South China University of Technology Guangzhou510006 China Hangzhou Lin'an Ecological Environment Monitoring Station Hangzhou311300 China Institute of Mass Spectrometry and Atmospheric Environment Guangdong Provincial Engineering Research Center for Online Source Apportionment System of Air Pollution Jinan University Guangzhou510632 China Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality Guangzhou510632 China Guangdong MS Institute of Scientific Instrument Innovation Guangzhou510530 China School of Chemical Sciences The University of Auckland Auckland1142 New Zealand Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment Nanjing210042 China State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical Engineering Nanjing University Nanjing210023 China

monitoring organic compounds in aquatic matrices can be a complex and time-consuming process. To address this issue, we present a novel approach that uses a dual-channel comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry (GC × GC–TOFMS) system equipped with an automatic pretreatment platform for online monitoring of volatile organic compounds (VOCs) and semivolatile organic compounds (SVOCs) in water matrices. Our automatic pretreatment platform incorporates headspace sampling (HS) and liquid–liquid extraction (LLE) to extract VOCs and SVOCs from water matrices. The GC × GC–TOFMS system features a dual-channel analytical structure column configuration, allowing for the sequential analysis of VOCs in the GC–TOFMS mode and SVOCs in the GC × GC–TOFMS mode. We quantitatively detected 55 and 104 target VOCs and SVOCs, respectively, in a water sample using the instrument system. Our method demonstrated excellent correlation coefficients ranging from 0.990 to 1.000, method detection limit ranging from 0.08 to 4.78 μg·L−1, relative standard deviation below 19.3%, and recovery rates ranging from 50.0% to 124.0%. To validate the online monitoring capabilities of our system, we tested the target SVOCs at three different concentration levels over a 3-day period. Most compounds exhibited recovery rates ranging from 70.0% to 130.0%. Furthermore, we applied our method to analyze a real water sample and successfully detected more than 100 target and nontarget VOCs/SVOCs, including alcohols, aldehydes, ketones, acids, esters, and phenols. Our results indicated the potential of our novel instrument system for effective screening and analysis of organic contaminants in aquatic matrices. This innovation provides a promising solution for improving the efficiency and accuracy of organic compound monitoring in water matrices. © 2024, The Authors. All rights reserved.

关键词： Volatile organic compounds

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

Hydrogen Spillover Induced PtCo/CoOx Interfaces with Enhanced Catalytic Activity for CO Oxidation at Low Temperatures in Humid Conditions

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Small 2024年第22期20卷 2309181-2309181页

作者： Lin, Jiajin Zhao, Shuaiqi Yang, Jin Huang, Wei-Hsiang Chen, Chi-Liang Chen, Tingyu Zhao, Yun Chen, Guangxu Qiu, Yongcai Gu, Lin School of Environment and Energy State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control South China University of Technology Guangzhou510000 China School of Chemistry and Chemical Engineering Wuhan Textile University Wuhan430200 China National Synchrotron Radiation Research Center Hsinchu30076 Taiwan Hsinchu30076 Taiwan Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and Devices Laboratory of Advanced Materials and Electron Microscopy Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing100190 China

The development of catalysts with abundant active interfaces for superior low-temperature catalytic CO oxidation is critical to meet increasingly rigorous emission requirements, yet still challenging. Herein, this work reports a PtCo/CoOx/Al2O3 catalyst with PtCo clusters and enriched Pt─O─Co interfaces induced by hydrogen spillover from the Pt sites and self-oxidation process in air, exhibiting excellent performance for CO oxidation at low temperatures and humid conditions. The combination of structural characterizations and in situ Fourier transform infrared spectroscopy reveals that the PtCo cluster effectively prevents CO saturation/poisoning on the Pt surface. Additionally, the presence of Pt─O─Co interfaces in the PtCo/CoOx/Al2O3 catalyst provides a significant number of active sites for oxygen activation and ─OH formation. This facilitates efficient generation of CO2 at ambient temperature by coupling with nearby adsorbed CO molecules, resulting in superior low-temperature activity and long-term stability for CO oxidation under humid conditions. This work provides a facile route toward rationalizing the design of catalysts with more active interfaces for superior low-temperature CO oxidation under humid conditions for practical applications. © 2023 Wiley-VCH GmbH.

关键词： Binary alloys

Comparison of Ozone and PM2.5 Concentrations over Urban,Suburban,and Background Sites in China

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Advances in atmospheric Sciences 2020年第12期37卷 1297-1309,I0001-I0004页

作者： Lan GAO Xu YUE Xiaoyan MENG Li DU Yadong LEI Chenguang TIAN Liang QIU Climate Change Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environment Science and EngineeringNanjing University of Information Science&TechnologyNanjing 210044China China National Environmental Monitoring Center Beijing 100012China School of Atmospheric Sciences Chengdu University of Information and TechnologyChengdu 610225China

Surface ozone(O3)and fine particulate matter(PM2.5)are dominant air pollutants in *** of these pollutants can show significant differences between urban and nonurban ***,such contrast has never been explored on the country *** study investigates the spatiotemporal characteristics of urban-to-suburban and urban-tobackground difference for O3(Δ[O3])and PM2.5(Δ[PM2.5])concentrations in China using monitoring data from 1171 urban,110 suburban,and 15 background sites built by the China National environmental monitoring Center(CNEMC).On the annual mean basis,the urban-to-suburbanΔ[O3]is−3.7 ppbv in Beijing-Tianjin-Hebei,1.0 ppbv in the Yangtze River Delta,−3.5 ppbv in the Pearl River Delta,and−3.8 ppbv in the Sichuan *** the contrary,the urban-to-suburbanΔ[PM2.5]is 15.8,−0.3,3.5 and 2.4μg m^−3 in those areas,*** urban-to-suburban contrast is more significant in winter for bothΔ[O3]andΔ[PM2.5].In eastern China,urban-to-background differences are also moderate during summer,with−5.1 to 6.8 ppbv forΔ[O3]and−0.1 to 22.5μg m^−3 forΔ[PM2.5].However,such contrasts are much larger in winter,with−22.2 to 5.5 ppbv forΔ[O3]and 3.1 to 82.3μg m^−3 forΔ[PM2.5].Since the urban region accounts for only 2%of the whole country’s area,the urban-dominant air quality data from the CNEMC network may overestimate winter[PM2.5]but underestimate winter[O3]over the vast domain of *** study suggests that the CNEMC monitoring data should be used with caution for evaluating chemical models and assessing ecosystem health,which require more data outside urban areas.

关键词： ozone PM2.5 urban suburban background

Large-scale production of holey graphite as high-rate anode for lithium ion batteries

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Journal of Energy Chemistry 2020年第9期29卷 122-127,I0004页

作者： Feng Xiao Xianghong Chen Jiakui Zhang Chunmao Huang Tong Hu Bo Hong Jiantie Xu Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control National Engineering Laboratory for VOCs Pollution Control Technology and EquipmentSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510640GuangdongChina School of Physics South China University of TechnologyGuangzhou 510640GuangdongChina School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina

Lithium ion batteries(LIBs)have been widely used in portable and smart devices because of their high energy densities,long cycle life and environmental *** order to meet the evergrowing demand for human-beings utilizi... 详细信息

关键词： H2O Holey graphite Rate capability Anode Lithium ion batteries

Projection of weather potential for winter haze episodes in Beijing by 1.5℃ and 2.0℃ global warming

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Advances in Climate Change Research 2020年第3期11卷 218-226页

作者： QIU Liang YUE Xu HUA Wei LEI Ya-Dong School of Atmospheric Sciences Chengdu University of Information and TechnologyChengdu610225China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environment Science and EngineeringNanjing University of Information Science&TechnologyNanjing210044China Climate Change Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China University of Chinese Academy of Sciences Beijing100049China

Haze episodes become very frequent in Beijing over the past decade,and such trend is related to favorable weather ***,we project the changes of weather conditions conducive to winter haze episodes in Beijing by 1.5℃ and 2.0℃ global warming using Haze Weather Index(HWI)and data of ensemble simulations from the Community Earth System Model(CESM)low-warming *** to present day(2006–2015),the frequency in winter season is projected to increase by 14% for regular haze episodes(HWI>0)and 21% for severe haze episodes(HWI>1)at the 1.5℃ global *** shows larger increases of 27% for regular and 18%for severe haze events at the 2℃ global *** additional warming of 0.5℃ largely enhances the persistence of weather conditions conducive to haze *** increased temperature contrast between near-surface and mid-troposphere in eastern Asia accounts for 57% and 81% of the change in HWI by 1.5℃ and 2℃ warming,*** increased haze weather potential caused by climate warming,we suggest that additional efforts in emission reductions of carbon dioxide and air pollution are necessary to mitigate haze episodes in Beijing.

关键词： Haze 1.5℃global warming 2℃global warming China Community earth system model(CESM)

Seasonal Variation, Source Contribution, and Impact Factors of Biogenic Organic Aerosols in Pm2.5 in Nanjing, China

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SSRN 2022年

作者： Cao, Maoyu Ge, Pengxiang Cui, Yan Li, Wenjing Chen, Mindong 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 & Technology Nanjing210044 China Institute of Meteorological Development and Planning China Meteorological Administration Beijing100081 China

(Image Present) In this study, a liquid chromatography–mass spectrometry (HPLC-ESI-MS/MS) was used to develop a rapid method to detect carbohydrates (one anhydrosugar, five sugars, and four sugar alcohols) and monoterpene secondary organic aerosol (SOAM) tracers in the atmosphere, successfully applied to 139 atmospheric aerosol samples in Nanjing in 2019. Anhydrosugar (levoglucosan) is the most abundant carbohydrate in the atmospheric environment, with an annual mean concentration of 103.96 ng m-3. The measured compounds exhibited distinct seasonal variation, with a higher concentration in spring and summer and a lower concentration in autumn and winter. The distinct seasonal variation in these Bioorganic aerosol s (BOAs) tracers may be caused by the different dominant sources in different seasons. Their seasonal trends are also similar to other worldwide observations. In Nanjing, the yield of SOAM is affected by meteorological conditions and anthropogenic pollutants (e.g., NO2 and O3). Furthermore, five source factors (secondary formation, biomass burning, soil resuspension, plant debris, and fungal spores) of BOAs and their geographic origin were obtained using the Positive Matrix Factor (PMF) and Potential Source Contribution Factor (PSCF) models. The contribution of these factors to BOAs also varies, with biomass burning (77.4%) contributing the most, followed by fungal spores (12.2%) and soil suspension (2.1%). © 2022, The Authors. All rights reserved.

关键词： Carbohydrates

Constructing Highly Active Metal Oxides for Toluene Degradation by Fenton Iron Mud Modulation

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SSRN 2022年

作者： Chong, Yanan Li, Yifei Lin, Jiajin Chen, Tingyu Zhao, Shuaiqi Wu, Peng Li, Anqi Feng, Chunhua Qiu, Yongcai Ye, Daiqi School of Environment and Energy State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control South China University of Technology Guangdong Guangzhou510000 China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of Education School of Environment and Energy South China University of Technology Guangzhou510006 China

Fenton iron mud (IM) is a hazardous solid waste produced by Fenton oxidation technology after treating industrial wastewater. Thus, it is necessary and challenging to develop a recycling technology to back-convert the dangerous materials into useful products. Herein, we develop a sustainable approach to prepare highly active metal oxides via a solid-state grinding method. IM as an amorphous material can disperse and interact well with these supported metal oxides, boosting the toluene degradation significantly. Among these IM-based catalysts, the catalyst of 8% MnOx/IM-0.2VC exhibits the best performance, originating from the oxides-support interaction and optimal balance between low-temperature reducibility and oxygen vacancy concentration. In addition, in-situ DRIFTS result expounds that the ring-breakage is prone to occurring on MnOx, and oxygen vacancy is beneficial to adsorb oxygen and activate oxygen species to boost toluene oxidation following Mars-van Krevelen mechanism. This work advances a complete industrial hazardous waste recycling route to develop extremely active catalysts. © 2022, The Authors. All rights reserved.

关键词： Oxygen vacancies