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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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Coordinated control of Fine-Particle and Ozone pollution by the Substantial Reduction of Nitrogen Oxides

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Engineering 2022年第8期8卷 13-16页

作者： Biwu Chu Yan Ding Xiang Gao Junhua Li Tingyu Zhu Yunbo Yu 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 Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of the Chinese Academy of Sciences Beijing 100049China Chinese Research Academy of Environmental Sciences Beijing 100012China State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control Zhejiang UniversityHangzhou 310027China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

*** In recent years,the air quality in China has improved *** many cities,however,the concentration of fine particulate matter(PM_(2.5))remains higher than the secondary-level national ambient air quality standard(NAAQS level-2,35μg·m^(-3),GB3095-2012[1])and much higher than the first-level NAAQS(15μg·m^(-3),GB3095-2012[1])and the World Health Organization(WHO)air quality guidelines(5μg·m^(-3)).

关键词： pollution Ozone ambient

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Oil droplet movement and micro-flow characteristics during interaction process between gas bubble and oil droplet in flotation

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Chinese Journal of Chemical Engineering 2022年第5期35卷 229-237页

作者： Shenglin Yan Yan Zhang Chong Peng Xiaoyong Yang Yuan Huang Zhishan Bai Xiao Xu State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237China Sinopec Dalian Research Institute of Petroleum and Petrochemicals Dalian 116041China Institute of Environmental Pollution and Health School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China

Flotation is an efficient pre-treatment technology for oily *** this work,the interaction process between the moving oil droplet and the gas bubble was studied by high-speed camera and Bassset-Boussinesq-Oseen(BBO)theoretical model,and the experimental and simulation results of the oil droplet trajectory were ***,the micro-particle image velocimetry system was utilized to observe the flow inside and outside of the moving oil *** results show that the BBO model with the mobile bubble’s surface can reflect the velocity change trend of the oil droplet during the interaction process between the moving oil droplet and the gas bubble,but there are some significant differences between the experimental and simulation *** the oil droplet is moving on the bubble’s surface,the velocity of the area near the contact point of oil droplet–gas bubble is less than that of the other areas inside the oil ***,the flow of water above the oil drop is more biased towards the gas bubble.

关键词： Flotation Oil droplet-gas bubble interaction Approach process Hydrodynamics

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Recent advances in waste-derived functional materials for wastewater remediation

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Eco-Environment & Health 2022年第2期1卷 86-104页

作者： Zhijie Chen Wei Wei Hong Chen Bing-Jie Ni Center for Technology in Water and Wastewater School of Civil and Environmental EngineeringUniversity of Technology SydneyNSW2007Australia State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control Shenzhen Key Laboratory of Interfacial Science and Engineering of MaterialsSchool of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China

Water pollution is a major concern for public health and a sustainable *** is urgent to purify wastewater with effective methods to ensure a clean water *** wastewater remediation techniques rely heavily on functional materials,and cost-effective materials are thus highly *** great environmental and economic significance,developing waste-derived materials for wastewater remediation has undergone explosive growth ***,the applications of waste(e.g.,biowastes,electronic wastes,and industrial wastes)-derived materials for wastewater purification are comprehensively *** strategies for turning wastes into functional materials are firstly summarized,including pyrolysis and combustion,hydrothermal synthesis,sol–gel method,co-precipitation,and ball ***,critical experimental parameters within different design strategies are ***,recent applications of waste-derived functional materials in adsorption,photocatalytic degradation,electrochemical treatment,and advanced oxidation processes(AOPs)are *** mainly focus on the development of efficient functional materials via regulating the internal and external characteristics of waste-derived materials,and the material’s property-performance correlation is also ***,the key future perspectives in the field of waste-derived materials-driven water remediation are highlighted.

关键词： Wastewater remediation Solid wastes Waste-derived materials Adsorption Advanced oxidation processes Catalytic degradation

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Consequential fate of bisphenol-attached PVC microplastics in water and simulated intestinal fluids

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环境科学与技术 2020年第4期2卷 62-70页

作者： Pengfei Wu Yuanyuan Tang Hangbiao Jin Yuanyuan Song Yunsong Liu Zongwei Cai State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology 1088 Xueyuan Blvd Nanshan District Shenzhen 518055 PR China State Key Laboratory of Environmental and Biological Analysis Department of Chemistry Hong Kong Baptist University Hong Kong 5AR PR China Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of Environment Zhejiang University of TechnologyHangzhou Zhejiang 310014 PR China

The ever-increasing prevalence of microplastics and different bisphenols made the presence of bisphenol-attached microplastics a critical *** this study,experiments were performed to examine desorption behaviors and cytotoxicity performance of contaminated microplastics in aquatic surroundings and intestinal environment after ingestion by organisms (cold-/warm-blooded).The kinetic study shows that the rate of desorption for bisphenols can be enhanced threefold under simulated warm intestinal *** Freundlich isotherms indicate multiple-layer desorption of the bisphenols on the heterogeneous surfaces of polyvinyl chloride (PVC) *** was detected in the adsorption/desorption of bisphenols in a water environment,but no adsorption/desorption hysteresis was observed in the simulated intestinal conditions of warm-blooded *** to enhanced bioaccessibility,the desorption results imply that the environmental risk of contaminated PVC microplastics may be significantly increased after ingestion at a high bisphenols *** with different ICs0,the five bisphenols released under the intestinal conditions of warm-blooded organisms can cause higher proliferation reduction in fish and human cell lines than the bisphenols released in *** study helps elucidate the consequential fate and potential cytotoxicity of contaminated microplastics and the possible implications of the microplastics as a critical vector for bisphenols to increase the potential health risks.

关键词： Microplastics Bisphenols Desorption behavior Bioaccessibility Cytotoxicity

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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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Preparation and Properties of The Persulfate Gel Materials And Application for The Remediation Of 2,4-Dinitrotoluene Contaminated groundwater

SSRN

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SSRN 2022年

作者： Xu, Xiangjian Wan, Shuoyang Xia, Fu Han, Xu Deng, Sheng Xiao, Han Jiang, Yonghai Liu, Hui Yang, Yu State Key Laboratory of Environmental Criteria and Risk Assessment and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing100012 China

Persulfate (S 2 O 8 2- ) is a strong oxidant that is widely used for treating organic contamination of groundwater. This study aims to develop persulfate gel sustaining-release material (PGSR) and gelatin-gel sustaining-release material (G-PGSR) that can be injected into aquifers via wells and slowly release S 2 O 8 2- to groundwater. In this study, compatibility and miscibility of colloidal silica gels and gelatin with S 2 O 8 2- were tested. Morphologies of the as-prepared PGSR and G-PGSR were observed by scanning electron microscope (SEM) and Fourier transform infrared spectrometer (FT-IR). Release characteristics of PGSR containing variable persulfate concentrations (from 1.25 wt% to 5 wt%), silica sol (from 30 wt% to 40 wt%), and gelatin (from 0.5 wt% to 2.0 wt%) were monitored. The PGSR and G-PGSR exhibited a two-phase process in viscosity: a progressive phase characterized by gradually increase in viscosity followed by a gradually decrease phase. The maximum release rates achieved at 5 h in G-PGSR were similar to that in PGSR. The release persulfate concentrations in G-PGSR suggested that gelatin and colloidal silica were both compatible and miscible with S 2 O 8 2- . Meanwhile, the PGSR exhibits a characteristic two-phase increase in viscosity with increased silica sol concentrations, persulfate concentrations, and gelatin concentrations. The PGSR and G-PGSR both could create persistent oxidation degradation of 2,4-dinitrotoluene (2,4-DNT). These results suggested that colloidal silica and gelatin could be used to create PGSR and G-PGSR for persistent oxidation in groundwater remediation. © 2022, The Authors. All rights reserved.

关键词： Aquifers

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Distribution and Source of Nitrate in groundwater in the hilly-Plain Transition Area of Jianghan Plain Using Dual N and O Isotopes of Nitrate

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Journal of Earth Science 2023年

作者： Kewen Luo Teng Ma Shuai Shen School of Environmental Studies China University of Geosciences State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science China University of Geosciences

Nitrogen contamination of groundwater in the Jianghan Plain (JHP) in the middle reach‐es of the Yangtze River is widespread,but the sources and fate of nitrate (NO3-) in the transitional area between plains and hills are poorly *** paper characterized the distribution,sources and transformation processes of NO3-in groundwater in the hilly-plain transition area of JHP through hy‐drogeochemistry and dual isotopes (δ15N and δ18O-NO3-).The hydrogeochemical results showed that the NO3-in the plain and hilly areas is heterogeneous and controlled by *** plain to hilly ar‐eas in summer,NO3-in groundwater has a general trend of decreasing with the direction of groundwa‐ter *** groundwater in the plain area is strongly affected by anthropogenic activities,and the NO3-in the multi-level aquifer gradually decreases with increasing *** in redox conditions caused by river erosion may be responsible for higher NO3-in groundwater along the eroded *** isotopic results showed that NO3-in the hilly area mainly comes from soil organic nitrogen,which is a natural ***,groundwater NO3-in the plain area is strongly affected by livestock manure and domestic sewage,which may be owing to the high density of residents and the impact of anthropo‐genic activities.

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Ca^2+ and SO4^2- interactions with dissolved organic matter: Implications of groundwater quality for CKDu incidence in Sri Lanka

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Journal of environmental Sciences 2020年第2期32卷 326-337页

作者： Madhubhashini Makehelwala Yuansong Wei Sujithra K.Weragoda Rohan Weerasooriya State Key Joint Laboratory of Environmental Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Department of Water Pollution Control Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China National Water Supply and Drainage Board KatugastotaSri Lanka National Institute of Fundamental Studies Hantana RoadKandy 20000Sri Lanka

It has recently been proposed that recalcitrant dissolved organic carbon(DOC) in groundwater plays a potent etiological role in the peculiar distribution of chronic kidney disease of unknown etiology(CKDu).This study aims to elucidate the interactions of Ca^2+and SO4^2-with a model organic fraction of humic acid(SHA) to determine the possible relationship of CKDu incidence with the DOC in drinking *** and FT-IR methods respectively determined the surface functional groups and chemical composition of protonated dissolved organic carbon(HDOC) in a CKDu high-risk zone(HR) of Sri Lanka and in *** surface C composition(87.9%) and lower O(11.4%) were observed for HDOC from the HR region than for SHA(C: 73.8%, O: 24.7%).Aromatic C with less Ocontaining functional groups was observed in *** IR band at 1170 cm^-1 confirms the formation of organic sulfonate(C–SO3^-) on SHA.A band at 1213 cm^-1 due to organic sulfonate in HDOC from the CKDu HR region was also *** IR band at 866 cm^-1 evidenced the formation of CaCO3 on SHA above pH *** data confirmed the presence of sulfur oxidation states corresponding to SO3^2-and SO4^2-at 168.9 eV and 170.1 eV binding energies,*** binding energies at 347 eV and 351 eV for Ca 2p3/2 and Ca 2p1/2 eV,respectively, confirmed the bidentate complexation of Ca^2+with COO-and sulfonate groups on *** organic sulfonate formed is postulated as a uremic toxicant.

关键词： Dissolved organic carbon Sulfate Calcium Ester group Bidentate

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Spatio-temporal characteristics of genotoxicity in the Yangtze River under the background of COVID-19 pandemic

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Frontiers of environmental Science & Engineering 2024年第11期18卷 121-132页

作者： Xinge Wang Na Li Yingnan Han Xiao Li Weixiao Qi Jian Li Kaifeng Rao Zijian Wang Yanjie Wei Mei Ma Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Yangtze Eco-Environment Engineering Research Center China Three Gorges CorporationBeijing 100038China National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery Beijing 100085China University of Chinese Academy of Sciences Beijing 100049China Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China Engineering Research Center of Groundwater Pollution Control and Remediation Ministry of EducationCollege of Water SciencesBeijing Normal UniversityBeijing 100875China Key Laboratory of Environmental Protection in Water Transport Engineering Ministry of Communications Tianjin Research Institute of Water Transport EngineeringTianjin 300456China

The global spread of viruses can lead to the release of large amounts of disinfectants or antiviral drugs into the water *** resulting disinfection byproducts(DBPs)and residual antiviral drugs,acting as genotoxic substances or their precursors,may pose risks to aquatic animals and drinking water sources;however,to date,no studies have analyzed the changes in genotoxicity in the Yangtze River before and after the *** the present study,water and sediment samples from the Yangtze River were collected during different seasons,just before and after the outbreak of COVID-19,and were assessed using the SOS/umu test(with and without liver S9).The results indicated that water samples exhibited more pronounced genotoxicity than did sediments,with direct genotoxicity being the primary ***,there were significant regional differences,with notably greater genotoxicity observed in the upper Yangtze River than in the lower reaches before the COVID-19 ***,this trend was reversed six to ten months later,suggesting the accumulation of DBPs or antiviral drugs after the COVID-19 ***,the risk quotient indicated that 65%of the water samples posed a high risk for Paramecium caudatum,whereas 71%of the samples posed a medium risk for Danio rerio,thereby representing a potential threat to the ecological security of the Yangtze *** conclusion,this study,at the basin scale,revealed the impacts of COVID-19 on the Yangtze River,highlighting the need to prevent DBPs and pharmaceutical pollution during similar events in the future.

关键词： Yangtze River COVID-19 Genotoxicity Spatio-temporal characteristics

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