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Assessing the effectiveness and mechanisms of Fe/PS, Fe/H_(2)O_(2), and O_(3) treatment for water disinfection: Spotlight on VBNC bacteria

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Journal of environmental Sciences 2025年第6期 389-400页

作者： Zheng Qi Zaihui Huang Chunguang Liu School of Environmental Science and Engineering Laboratory of Marine Ecological Environment in Universities of ShandongShandong UniversityQingdao 266237China Environmental Simulation and Pollution Control State Key Joint Laboratory School of EnvironmentTsinghua UniversityBeijing 100084China Qingdao Key Laboratory of Marine Pollutant Prevention Shandong Key Laboratory of Environmental Processes and HealthShandong UniversityQingdao 266237China

Advanced oxidation processes (AOPs) exhibit significant potential forwater disinfection dueto their generation of large quantities of highly oxidizing free radicals. However, the neglectof viable but nonculturable (VBNC) cells obscures their true disinfection efficacy and potentialenvironmental health risks. Therefore, the study evaluated the disinfection effectivenessand mechanisms of typical AOPs, including Fe/H_(2)O_(2), Fe/persulfate (PS), and O_(3), fromthe perspective of the production of VBNC bacteria. The results indicate that Fe/PS exhibitsthe strongest bacterial inactivation rate (99.94%), and the cells lose their ability to ***/H_(2)O_(2) and O_(3) induce more cells to enter the VBNC state compared to Fe/PS. Moreover,different AOPs result in varying levels of free radical production and utilization efficiency,with SO(4)^(·−) and O_(3) exhibiting greater selectivity in deactivating bacteria comparedto HO^(·). The inhibition of VBNC bacteria production by Fe/PS treatment may be attributed tothe combined action of HO^(·) and SO(4)^(·−) on microorganisms, leading to oxidative stress andmetabolic disruption in bacteria through the inhibition of biofilm formation and aminoacyltRNAbiosynthesis (p < 0.05), thereby causing direct bacterial death rather than entry intothe VBNC state. In contrast, Fe/H_(2)O_(2) and O_(3) result in the upregulation of the metabolismof alanine, aspartate, and glutamate, as well as styrene degradation capacity by the bacteria,leading to the production of more VBNC bacteria. Overall, the study offers insights intomitigating potential biological risks in water disinfection and developing environmentallyfriendly and efficient disinfection technologies.

关键词： Advanced oxidation processes Disinfection Oxidative stress Reactive oxygen species Viable but nonculturable cells

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Trends and drivers of anthropogenic NOx emissions in China since 2020

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environmental Science and Ecotechnology 2024年第5期21卷 287-293页

作者： Hui Li Bo Zheng Yu Lei Didier Hauglustaine Cuihong Chen Xin Lin Yi Zhang Qiang Zhang Kebin He Shenzhen Key Laboratory of Ecological Remediation and Carbon Sequestration Institute of Environment and EcologyTsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation and Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing 100041China Laboratoire des Sciences du Climat et de l’Environnement LSCE/IPSLCEA-CNRS-UVSQUniversite Paris-SaclayGif-sur-YvetteFrance Center for Satellite Application on Ecology and Environment Ministry of Ecology and Environment of ChinaBeijing 100094China Institute of Future Human Habitats Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing 100084China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

Nitrogen oxides(NOx),significant contributors to air pollution and climate change,form aerosols and ozone in the ***,timely,and transparent information on NOx emissions is essential for decision-making to mitigate both haze and ozone ***,a comprehensive understanding of the trends and drivers behind anthropogenic NOx emissions from Chinadthe world's largest emitterdhas been lacking since 2020 due to delays in emissions *** we show a consistent decline in China's NOx emissions from 2020 to 2022,despite increased fossil fuel consumption,utilizing satellite observations as constraints for NOx emission estimates through atmospheric *** reduction is corroborated by data from two independent spaceborne instruments:the TROPOspheric Monitoring Instrument(TROPOMI)and the Ozone Monitoring Instrument(OMI).Notably,a reduction in transport emissions,largely due to the COVID-19 lockdowns,slightly decreased China's NOx emissions in *** subsequent years,2021 and 2022,reductions in NOx emissions were driven by the industry and transport sectors,influenced by stringent air pollution *** satellite-based inversion system developed in this study represents a significant advancement in the real-time monitoring of regional air pollution emissions from space.

关键词： China's NOx emissions pollution control Socio-economic drivers Atmospheric inversion

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Modeling the dynamic impacts of maritime network blockage on global supply chains

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The Innovation 2024年第4期5卷 103-109,102页

作者： Shen Qu Yunlei She Qi Zhou Jasper Verschuur Lu-Tao Zhao Huan Liu Ming Xu Yi-Ming Wei Center for Energy and Environmental Policy Research Beijing Institute of TechnologyBeijing 100081China School of Management Beijing Institute of TechnologyBeijing 100081China Beijing Key Lab of Energy Economics and Environmental Management Beijing 100081China Oxford Programme for Sustainable Infrastructure Systems(OPSIS) Environmental Change InstituteUniversity of OxfordOX12JD OxfordUK 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 School of Environment Tsinghua UniversityBeijing 100084China

Recent phenomena such as pandemics,geopolitical tensions,and climate change-induced extreme weather events have caused transportation network interruptions,revealing vulnerabilities in the global supply chain.A salient example is the March 2021 Suez Canal blockage,which delayed 432 vessels carrying cargo valued at$92.7 billion,triggering widespread supply chain *** ability to model the spatiotemporal ramifications of such incidents remains *** fill this gap,we develop an agent-based complex network model integrated with frequently updated maritime *** Suez Canal blockage is taken as a case *** results indicate that the effects of such blockages go beyond the directly affected countries and *** Suez Canal blockage led to global losses of about$136.9($127.5–$147.3)billion,with India suffering 75%of these *** losses show a nonlinear relationship with the duration of blockage and exhibit intricate trends post *** proposed model can be applied to diverse blockage scenarios,potentially acting as an earlyalert system for the ensuing supply chain ***,high-resolution daily data post blockage offer valuable insights that can help nations and industries enhance their resilience against similar future events.

关键词： chains valued extreme

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Scrap Iron Filings assisted nitrate and phosphate removal in low C/N waters using mixed microbial culture

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Frontiers of environmental Science & Engineering 2021年第4期15卷 215-228页

作者： Sanjena Narayanasamydamodaran Jian’e Zuo Haiteng Ren Nawnit Kumar State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China State Key Laboratory of Hydroscience and Hydraulic Engineering Tsinghua UniversityBeijing100084China

This study focuses on identifying the factors under which mixed microbial seeds assist bio-chemical denitrification when Scrap Iron Filings(SIF)are used as electron donors and adsorbents in low C/N ratio *** studies were conducted in abiotic and biotic reactors containing fresh and aged SIF under different dissolved oxygen concentrations with NO_(3)^(-)−N and/or PO_(4)^(3−)influent(s)and their nitrate/phosphate removal and by-product formations were *** reactors were seeded with a homogenized mixed microbial inoculum procured from natural sludges which were enriched over 6 months under denitrifying conditions in the presence of *** indicated that when influent containing 40 mg/L of NO_(3)^(-)−N was treated with 5 g SIF,79.9%nitrate reduction was observed in 8 days abiotically and 100%removal was accomplished in 20 days when the reactor was *** abiotic and seeded reactors removed more than 92%PO_(4)^(3−)under high DO conditions in 12 *** and biochemical removal of NO_(3)^(-)−N and abiotic removal of PO_(4)^(3−)were higher under independent NO_(3)^(-)−N/PO_(4)^(3−)loading,while 99%PO_(4)^(3−)was removed biochemically under combined NO_(3)^(-)−N and PO_(4)^(3−)*** study furthers the understandings of nitrate and phosphate removal in Zero Valent Iron(ZVI)assisted mixed microbial systems to encourage the application of SIF-supported bio-chemical processes in the simultaneous removals of these pollutants.

关键词： Scrap iron filing Nitrate removal Phosphate removal Mixed culture denitrification Zero valent iron

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Atmospheric heterogeneous reactions on soot:A review

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Fundamental Research 2023年第4期3卷 579-591页

作者： Yuan Liu Guangzhi He Biwu Chu Qingxin Ma Hong He State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China

Soot particles,composed of elemental carbon and organic compounds,have attracted widespread attention in recent years due to their significant impacts on climate,the environment and human *** has been found to be chemically and physically active in atmospheric aging processes,which leads to alterations in its composition,morphology,hygroscopicity and optical properties and thus changes its environmental and health *** heterogeneous reactions on soot also have a significant impact on the transformation of gaseous pollutants into secondary ***,the interactions between soot and atmospheric substances have been widely investigated to better understand the environmental behaviors of *** this review,we systematically summarize the progress and developments in the heterogeneous chemistry on soot over the past_(3)0 *** trace constituents such as NO_(2),O_(3),SO_(2),N_(2)O_(5),HNO_(3),H_(2)SO_(4),OH radical,HO_(2)radical,peroxyacetyl nitrate etc.,are presented in detail from the aspect of their heterogeneous reactions on *** possible mechanisms and the effects of environmental conditions on these heterogeneous reactions are also ***,the impacts of the heterogeneous reactions of soot on the atmospheric environment are discussed,and some aspects of soot-related research which require further investigation are proposed as well.

关键词： Soot NO_(2) SO_(2) O_(3) Heterogeneous reactions

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Growth of BaTaO_(2)N-BaNa_(0.25)Ta_(0.75)O_(3) Solid Solution Photocatalyst for Visible Light-Driven Z-Scheme Overall Water Splitting

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Energy Material Advances 2022年第1期2022卷 16-23页

作者： Ying Luo Qiaoqi Guo Jun Xu Hanghang Zhou Zheng Wang Hong He State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

BaTaO_(2)N with intense visible light absorption has been demonstrated as a promising photocatalyst for Z-scheme overall water splitting,whereas the photocatalytic activity of BaTaO_(2)N is still restricted by strong charge recombination at structural ***,we present the direct growth of BaTaO_(2)N-BaNa_(0.25)Ta_(0.75)O_(3) solid solution from a lattice-matched BaNa_(0.25)Ta_(0.75)O_(3) precursor through volatilization of Na species during a nitridation *** method promotes the direct phase transformation from BaNa_(0.25)Ta_(0.75)O_(3) to BaTaO_(2)N to inhibit the formation of defect *** a result,the as-obtained BaTaO_(2)N-BaNa_(0.25)Ta_(0.75)O_(3) solid solution shows greatly enhanced activity compared to the conventional BaTaO_(2)N,regardless of photocatalytic H2 evolution in the presence of methanol or Z-scheme overall water *** study provides a facile method to construct(oxy)nitride-based solid solution photocatalysts with low defect density for efficient solar hydrogen production from water splitting.

关键词： process catalyst defect

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Chemical characteristics,oxidative potential,and sources of PM_(2.5)in wintertime in Lahore and Peshawar,Pakistan

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Journal of environmental Sciences 2021年第4期33卷 148-158页

作者： Mushtaq Ahmad Qing Yu Jing Chen Siming Cheng Weihua Qin Yuepeng Zhang State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentBeijing Normal UniversityBeijing 100875China Department of Environmental Sciences University of PeshawarPeshawar 25120Pakistan

The chemical characteristics,oxidative potential,and sources of PM_(2.5)were analyzed at the urban sites of Lahore and Peshawar,Pakistan in February *** species,water soluble ions,and metal elements were measured to investigate the chemical composition and sources of PM_(2.5).The dithiothreitol(DTT)consumption rate was measured to evaluate the oxidative potential of PM_(2.5).Both cities showed a high exposure risk of PM_(2.5)regarding its oxidative potential(DTT v).Carbonaceous and some of the elemental species of PM_(2.5)correlated well with DTT v in both Lahore and ***,the DTT v of PM_(2.5)in Lahore showed significant positive correlation with most of the measured water soluble ions,however,ions were DTT-inactive in *** to the higher proportions of carbonaceous species and metal elements,Peshawar showed higher mass-normalized DTT activity of PM_(2.5)compared to Lahore although the average PM_(2.5)concentration in Peshawar was *** high concentrations of toxic metals also posed serious non-carcinogenic and carcinogenic risks to the residents of both *** component analysis coupled with multiple linear regression was applied to investigate different source contributions to PM_(2.5)and its oxidative *** sources of traffic and road dust resuspension and coal combustion,direct vehicle emission,and biomass burning and formation of secondary aerosol were identified as the major sources of PM_(2.5)in both *** findings of this study provide important data for evaluation of the potential health risks of PM_(2.5)and for formulation of efficient control strategies in major cities of Pakistan.

关键词： Air pollution DTT Health risk Oxidative potential Source apportionment

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Significant effects of transport on nanoparticles during new particle formation events in the atmosphere of Beijing

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Particuology 2023年第9期80卷 1-10页

作者： Dongjie Shang Min Hu Lizi Tang Xin Fang Ying Liu Yusheng Wu Zhuofei Du Xuhui Cai Zhijun Wu Shengrong Lou Mattias Hallquist Song Guo Yuanhang Zhang State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and EngineeringInternational JointLaboratory for Regional Pollution ControlMinistry of Education(IJRC)Peking UniversityBeijing100871China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing University of Information Science&TechnologyNanjing210044China Department of Chemistry and Molecular Biology University of GothenburgGothenburg41296Sweden Shanghai Academy of Environmental Sciences Shanghai200233China

The mechanisms of new particle formation(NPF)events that occurred under high aerosol loadings(“polluted”NPF)in the atmosphere have been unclear,which has inhibited the precision of particlepollution *** deepen the understanding of how the“polluted”NPF events occur,a one-monthcomprehensive measurement was conducted in the atmosphere of Beijing during the summer ***“clean”NPF events(frequency=22%)(condensation sink,CS<0.015 s^(-1))were found to becaused by local nucleation and ***“polluted”NPF events(frequency=28%)(CS>0.015 s^(-1))were influenced by both local nucleation-growth and regional transport,and the contributions from thetwo factors to 6e25 nm particle number concentration were 60%and 40%,*** studyemphasized the importance of the transport for nanoparticles in relatively polluted atmospheres,and forthat the regional joint particle pollution control would be an essential policy.

关键词： New particle formation Transport Nanoparticles Sulfuric acid

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Air pollution health burden embodied in China's supply chains

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environmental Science and Ecotechnology 2023年第4期16卷 147-155页

作者： Hongyan Zhao Ruili Wu Yang Liu Jing Cheng Guannan Geng Yixuan Zheng Hezhong Tian Kebin He Qiang Zhang Center for Atmospheric Environmental Studies School of EnvironmentBeijing Normal UniversityBeijing100875China Ministry of Education Key Laboratory for Earth System Modelling Department of Earth System ScienceTsinghua UniversityBeijing100084China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China State Environmental Protection Key Laboratory of Quality Control in Environmental Monitoring China National Environmental Monitoring CentreBeijing100012China Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing100012China

Product trade plays an increasing role in relocating production and the associated air pollution impact among sectors and *** a comprehensive depiction of atmospheric pollution redistribution through trade chains is missing,which may hinder targeted clean air cooperation among sectors and ***,we combined five state-of-the-art models from physics,economy,and epidemiology to track the anthropogenic fine particle matters(PM_(2.5))related premature mortality along the supply chains within China in *** results highlight the key sectors that affect PM_(2.5)-related mortality from both production and consumption *** consumption-based effects from food,light industry,equipment,construction,and services sectors,caused 2e22 times higher deaths than those from a production perspective and totally contributed 63%of the national *** a cross-boundary perspective,25.7%of China's PM_(2.5)-related deaths were caused by interprovincial trade,with the largest transfer occurring from the central and northern regions to well-developed east coast *** investment dominated the cross-boundary effect(56%of the total)by involving substantial equipment and construction products,which greatly rely on product exports from regions with specific *** supply chain-based analysis provides a comprehensive quantification and may inform more effective joint-control efforts among associated regions and sectors from a health risk perspective.

关键词： China Air pollution Mortality Trade Supply chain

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Ammonia removal from low-strength municipal wastewater by powdered resin combined with simultaneous recovery as struvite

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Frontiers of environmental Science & Engineering 2021年第1期15卷 125-134页

作者： Kuo Fang Fei Peng Hui Gong Huanzhen Zhang Kaijun Wang State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China School of Water Resources&Environment China University of GeosciencesBeijing 100083China

Low-strength municipal wastewater is considered to be a recoverable nutrient resource with economic and environmental ***,various technologies for nutrient removal and recovery have been *** this paper,powdered ion exchange resin was employed for ammonia removal and recovery from imitated low-strength municipal *** effects of various working conditions(powdered resin dosage,initial concentration,and pH value)were studied in batch experiments to investigate the feasibility of the approach and to achieve performance *** maximum adsorption capacity determined by the Langmuir model was 44.39 mg/g,which is comparable to traditional ion exchange ***,the effects of co-existing cations(Ca^(2+),Mg^(2+),K^(+))were *** on the above experiments,recovery of ammonia as struvite was successfully achieved by a proposed two-stage crystallization process coupled with a powdered resin ion exchange *** electron microscopy(SEM)and X-ray diffractometry(XRD)results revealed that struvite crystals were successfully gained in alkaline conditions(pH=10).This research demonstrates that a powdered resin and two-stage crystallization process provide an innovative and promising means for highly efficient and easy recovery from low-strength municipal wastewater.

关键词： Ammonia removal and recovery Powdered resin Crystallization process Struvite Co-existing cations

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