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Theoretical insights of the pharmaceutical compound fluoxetine in water:Role in direct photolysis and indirect photolysis by free radicals

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Journal of Environmental Sciences 2024年第8期142卷 269-278页

作者： Ying Lu Se Wang Yifan Shen School of Environmental Science and Engineering Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlNanjing University of Information Science and TechnologyNanjing 210044China

The frequent detection of pharmaceutical compounds in the environment has led to a growing awareness,which may pose a major threat to the aquatic *** this study,photodegradation(direct and indirect photolysis)of two different dissociation states of fluoxetine(FLU)was investigated in water,mainly including the determination of photolytic transition states and products,and the mechanisms of indirect photodegradation with·OH,CO_(3)^(*-)and NO_(3)^(*).The main direct photolysis pathways are defluorination and C–C bond *** addition,the indirect photodegradation of FLU in water is mainly through the reactions with·OH and NO_(3)^(*),and the photodegradation reaction with CO_(3)^(*-)is relatively difficult to occur in the water *** results provide a theoretical basis for understanding the phototransformation process of FLU in the water environment and assessing its potential risk.

关键词： Fluoxetine Photochemical mechanism Direct photolysis Free radical reaction DFT

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Effects of La^(3+),Ce^(3+) on nitrogen removal in sequencing batch reactor

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Frontiers of Environmental Science & Engineering 2009年第3期3卷 369-374页

作者： Qing XIA Rui LIANG Yuxiang MAO Yuning HONG Lili DING Hongqiang REN Mingyu ZHAO State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210093China China National Environmental Monitoring Center Beijing 100012China Jiangsu Jiangshan Pharmaceutical Co. Ltd.Jingjiang 214500China Grandway Technology International Co. Ltd.Beijing 100102China

Batch experiments were conducted to study the short-term biological effects of rare earth ions(La^(3+),Ce^(3+))and their mixture on the nitrogen removal in a sequencing batch reactor(SBR).The data showed that higher NH4+–N removal rate,total inorganic nitrogen removal efficiency,and denitrification efficiency were achieved at lower concentrations of rare earth elements(REEs)(<1 mg/L).In the first hour of the aeration stage of SBR,the presence of REEs increased the total inorganic nitrogen removal efficiency and NH4+–N removal effi-ciency by 15.7%and 10%–15%,*** the concentrations of REEs were higher than 1 mg/L,the total inorganic nitrogen removal efficiency decreased,and nitrate was found to accumulate in the *** the concentrations of REEs was up to 50.0 mg/L,the total inorganic nitrogen removal efficiency was less than 30%of the control efficiency with a high level of *** concentrations of REEs were found to accelerate the nitrogen conversion and removal in SBR.

关键词： rare earth La^(3+) Ce^(3+) inorganic nitrogen nitrogen removal sequencing batch reactor(SBR)

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Assessment and Analysis on the Structure Status and CO2 Emissions from Freight transport in China

Assessment and Analysis on the Structure Status and CO2 Emis...

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第四届环境资源与能源工程国际学术会议

作者： Renjie Wang Yuanyuan Song Xiaoyi Li Xiaoyu Tan Meizhen Gao Shengqiang Liu Jie Liu Division of Environmental and Resources Transport Planning and Research Institute Ministry of Transport Laboratory of Transport Pollution Control and Monitoring Technology Transport Planning and Research Institute Ministry of Transport School of Traffic and Transportation Beijing Jiaotong University

With the booming freight industry in China in recent years, the freight volume has presented a growing trend, but the accompanied motor vehicle pollution emission becomes increasingly prominent. For the purpose of green development in freight industry, China is taking active measures to reduce emissions. Among them, the structural emission reduction enjoys the greatest potential in energy conservation and emission reduction in the transportation industry in the future. Its key is to adjust the current unreasonable transportation structure in China, and promote the transfer of freight transport from road to rail and water through the development of multimodal transport. Therefore, systematically finding out the structural characteristics of China's freight industry and sorting out the problems existing in the freight structure can provide technical support for promoting the structural emission reduction of the freight industry and building an intensive, efficient and green cargo transportation system. This study systematically analyzed the overall development and structural characteristics of China's freight transportation, calculated the current situation and characteristics of CO2 emissions in China's freight transportation sector, summarized and analyzed the main problems facing energy conservation and emission reduction in China's freight transportation sector, and put forward countermeasures and suggestions.

关键词： Assessment and Analysis on the Structure Status and CO2 Emissions from Freight transport in China

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Spatial and Temporal Variations of Heat Waves in China from 1961 to 2010

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Advances in Climate Change Research 2014年第2期5卷 66-73页

作者： YE Dian-Xiu YIN Ji-Fu CHEN Zheng-Hong ZHENG You-Fei WU Rong-Jun National Climate Center China Meteorological Administration Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration Nanjing University of Information Science and Technology Hubei Service Center for Meteorological Science & Technology Hebei Meteorological Bureau Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing University of Information Science & Technology

Daily maximum temperatures from 753 stations across China and the heat wave indicators are used to study the temporal and spatial characteristics of heat wave intensity, frequency and heat wave days in China over the period of1961–2010. The results show that high frequency, long duration and strong intensity of heat waves occurred in the Jianghuai area, Jiangnan area, and eastern Sichuan Basin. The highest frequency and the longest duration are located in northern Jiangxi and northern Zhejiang provinces, and the highest intensity in northern Zhejiang province is even more prominent. The frequency, heat wave days and intensity showed a general increasing trend in the past 50 years, while decadal characteristics are also observed with a decreasing trend from the 1960 s to the early 1980 s and increasing trend from the end of the 1980 s to 2010. The regional variations demonstrate a significant increasing trend in the northern and western parts of North China, central-northern part of Northwest China, the central part of South China, the Yangtze River Delta and the southern Sichuan Basin, with an obvious decreasing trend in the southern Huanghuai area, northern Jianghuai area and Hanjiang River Basin.

关键词： heat wave intensity frequency duration

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Improving hole transfer of boron nitride quantum dots modified PDI for efficient photodegradation

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Frontiers of Chemical Science and Engineering 2023年第11期17卷 1718-1727页

作者： Shiqing Ma Chundong Peng Zeyu Jia Yanmei Feng Kai Chen Hao Ding Daimei Chen Zhong-Yong Yuan Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastesNational Laboratory of Mineral MaterialsSchool of Material Sciences and TechnologyChina University of GeosciencesBeijing 100083China School of Materials Science and Engineering Nankai UniversityTianjin 300350China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoringand Pollution Control School of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China

In recent years,organic photocatalyst under visible-light absorption has shown significant potential for solving environmental ***,it is still a great challenge for constructing a highly active organic photocatalyst due to the low separation efficiency of photogenerated ***,an effective and robust photocatalyst perylene-3,4,9,10-tetracarboxylic diamide/boron nitride quantum dots(PDI/BNQDs),consisting of selfassemble PDI withπ–πstacking structure and BNQDs,has been constructed and researched under visible light *** PDI/BNQDs composite gradually increases organic pollutant photodegradation with the loading amount of *** 10 mL of BNQDs solution added(PDI/BNQDs-10),the organic pollutant photodegradation performance reaches a maximum,about 6.16 times higher with methylene blue and 1.68 times higher with ciprofloxacin than that of pure PDI *** enhancement is attributed to improved separation of photogenerated carriers from self-assembled PDI by BNQDs due to their preeminent ability to extract *** work is significant for the supplement of PDI supramolecular composite *** believe that this photocatalytic design is capable of expanding organic semiconductors’potential for their applications in photocatalysis.

关键词： PDI boron nitride quantum dots photocatalysis hole transfer

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Estimation of Ship Water Pollutants to Be Delivered and Analysis of Imbalance between Supply and Demand of Water Pollutants Receiving Facilities

SSRN

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SSRN 2023年

作者： Lin, Bowen Ma, Xiaofeng Zhong, Ming Laboratory of Transport Pollution Control and Monitoring Technology China Intelligent Transportation Systems Research Center Wuhan University of Technology China National Engineering Research Center for Water Transport Safety China

With the continuous development of waterway transportation, the number and tonnage of inland waterway ships are increasing, and water pollutants such as domestic sewage, oil sewage, and domestic garbage generated by ships are increasing. The discharge and improper disposal of water pollutants from ships can cause serious harm to the water environment, so the precise measurement of the amount of water pollutants to be delivered from ships and the evaluation of the reception and disposal of water pollutants from ships in the inland river has gradually attracted the attention of management departments. To address this issue, a novel method is proposed to measure the amount of water pollutants to be delivered from inland waterway ships based on ship inbound and outbound data. Combining with the Bossel sustainable development targeting indicator framework, a system for determining the imbalance of water pollutant reception facilities in port areas was developed. Finally, an inland river port is selected as an example to measure the amount of water pollutants to be delivered and to evaluate the imbalance of water pollutant reception facilities. The result shows that the method proposed in this paper provides a new concept for the problems of measuring the amount of water pollutants to be delivered from inland river ships and evaluating the balance between supply and demand of water pollutants to be delivered from ships and the receiving and disposal capacity. Additionally, reference implications for building sustainable, eco-friendly ports can be attained. © 2023, The Authors. All rights reserved.

关键词： Sewage

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Aqueous-phase formation of N-containing secondary organic compounds affected by the ionic strength

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Journal of Environmental Sciences 2024年第4期138卷 88-101页

作者： Yuqi Gan Xiaohui Lu Shaodong Chen Xinghua Jiang Shanye Yang Xiewen Ma Mei Li Fan Yang Yewen Shi Xiaofei Wang Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention Department of Environmental Science and EngineeringFudan UniversityShanghai 200433China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Guangdong Provincial Observation and Research Station for Coastal Atmosphere and Climate of the Great Bay Area Southern University of Science and TechnologyShenzhen 518055China Institute of Mass Spectrometry and Atmospheric Environment Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air PollutionJinan UniversityGuangzhouChina Environmental Monitoring Station of Pudong New District Shanghai 201200China Shanghai Municipal Center for Disease Control&Prevention Shanghai 200336China

The reaction of carbonyl-to-imine/hemiaminal conversion in the atmospheric aqueous phase is a critical pathway to produce the light-absorbing N-containing secondary organic compounds(SOC).The formation mechanism of these compounds has been wildly investigated in bulk solutions with a low ionic ***,the ionic strength in the aqueous phase of the polluted atmosphere may be *** is still unclear whether and to what extent the inorganic ions can affect the SOC *** we prepared the bulk solution with certain ionic strength,in which glyoxal and ammonium were mixed to mimic the aqueous-phase *** characterization by High-resolution Mass Spectrometry was performed to identify the N-containing products,and the light absorption of the mixtures was measured by ultraviolet-visible ***-nine N-containing compounds were identified and divided into four categories(N-heterocyclic chromophores,high-molecular-weight compounds with N-heterocycle,aliphatic imines/hemiaminals,and the unclassified).It was observed that the longer reaction time and higher ionic strength led to the formation of more N-heterocyclic chromophores and the increasing of the lightabsorbance of the *** added inorganic ions were proposed to make the aqueous phase somewhat viscous so that the molecules were prone to undergo consecutive and intramolecular reactions to form the *** general,this study revealed that the enhanced ionic strength and prolonged reaction time had the promotion effect on the lightabsorbing SOC *** implies that the aldehyde-derived aqueous-phase SOC would contribute more light-absorbing particulate matter in the industrial or populated area where inorganic ions are abundant.

关键词： Ionic strength Carbonyl-to-imine/hemiaminal Heterocyclic Brown carbon Mass spectrometry Aqueous-phase reaction

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Estimation of Ship Waste to Be Delivered and Imbalance Analysis between Ship Waste Supply and Demand in Inland Waterways

SSRN

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SSRN 2023年

Ship waste causes serious harm to the inland waterway environment, so the precise measurement to calculate the amount of ship waste ships and evaluate the efficiency in the receipt and disposal of ship waste in the inland waterway has gradually attracted the attention of management departments. To address this issue, a novel method is proposed to measure the amount of waste to be delivered from inland waterway ships. Combining with the Bossel sustainable development directional indicator framework, a system for evaluating the imbalance of waste supply and demand in inland waterways was developed. Finally, an inland river port in the Yangtze River is selected as an example, the results show that the amount of ship's domestic sewage, oily water, and domestic garbage to be delivered in the case area was 257.73 tons, 7.65 tons and 4.96 tons, respectively. The imbalance level of waste supply and demand is IV. © 2023, The Authors. All rights reserved.

关键词： Economics

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Soil amendment strategies determining microbial community composition and their assembly processes in a continuously cropped soil

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Soil Ecology Letters 2024年第3期6卷 85-95页

作者： Hongkai Liao Chunli Zheng Juan Li Jian Long Yaying Li Guizhou Provincial Key Laboratory of Mountain Environment Guizhou Normal UniversityGuiyang 550001China The Key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of EducationDepartment of ToxicologySchool of Public HealthGuizhou Medical UniversityGuiyang 550025China Key Laboratory of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo(Beilun)Zhongke Haixi Industry Technology Innovation CenterNingbo 315800China

Reductive soil disinfestation(RSD)is an important tool for sustainable agricultural ***,the differences in soil bacterial communities and their community assembly processes among RSD and other treatment strategies(e.g.,biochar and chemical fumigation)are still subject to open *** this study,soils subjected to various treatments–un-treated control(CK),chemical soil fumigation with CaCN_(2)(CF),1% biochar(1%B),3% biochar(3%B),and reductive soil disinfestation(RSD)are *** samples were collected,incubated,and then used for growth of tomato *** Sloan neutral community model indicates that stochastic processes dominate in bacterial community assembly for both biochar and CF *** contrast,this work shows that RSD treatment can have a strong impact on soil bacterial community *** relative abundance of Firmicutes increased during unplanted soil incubation,whereas Proteobacteria and Bacteroidetes dominated in the rhizosphere after planting of *** stochasticity ratio reveals that deterministic selection played an important role in the bacterial assembly under RSD *** found that RSD amendment yielded lower biomass than that for other treatments after 28 days of tomato *** results suggest that although RSD treatment has great potential to rebuild soil bacterial ecology by shaping bacterial communities and their assembly processes,it is important to monitor and manage soil conditions(e.g.,soil nutrients or physical properties)before planting to ensure plant productivity.

关键词： amendment strategy reductive soil disinfestation bacterial community assembly processes

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Low-condensation diesel use contributes to winter haze in cold regions of China

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Environmental Science and Ecotechnology 2024年第6期22卷 226-232页

作者： Weiwei Song Mengying Wang Yixuan Zhao Yu Bo Wanying Yao Ruihan Chen Xianshi Wang Xiaoyan Wang Chunhui Li Kebin He State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin150090China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Institute of Atmospheric Physics Chinese Academy of SciencesBeijing100029China Harbin Ecological and Environmental Monitoring Center Harbin150076China Collaborative Innovation Center for Regional Environmental Quality Beijing100084China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing100084China

The application of low-condensation diesel in cold regions with extremely low ambient temperatures(−14 to−29℃)has enabled the operation of diesel ***,it may contribute to heavy haze pollution in cold regions during *** we examine pollutant emissions from low-condensation diesel in *** measure the emissions of elemental carbon(EC),organic carbon(OC),and elements,including heavy metals such as arsenic(As).Our results show that low-condensation diesel increased EC and OC emissions by 2.5 and 2.6 times compared to normal diesel fuel,*** of vehicular sources,including EC,As,lead(Pb),cadmium(Cd),chromium(Cr),nickel(Ni),and manganese(Mn),increased by approximately 20.2-162.5%when using low-condensation *** variation of vehicular source indicators,observed at road site ambient environments revealed the enhancement of PM2.5 pollution by the application of low-condensation diesel in *** findings suggest that−35#diesel,a low-cetane index diesel,may enhance air pollution in winter,according to a dynamometer test conducted in *** raises questions about whether higher emissions are released if−35#diesel is applied to running vehicles in real-world cold ambient environments.

关键词： Low condensation diesel Carbonaceous matterHeavy metal Dynamometer Cold regions

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