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SSRN 2022年

作者： Yu, Peng Dong, Peiyan Wang, Hui State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China The Key Laboratory of Water and Sediment Sciences Ministry of Education College of Environmental Sciences and Engineering Peking University Beijing100871 China

In this study, the effects of initial pH values (3, 5, 7, 11) on intracellular and extracellular antibiotic resistance genes (iARGs and eARGs) and mobile genetic elements (MGEs) during anaerobic fermentation of swine manure were investigated. The results demonstrated that the initial pH during fermentation was acidic (pH 3 and 5), which was conducive to the removal of six eARGs and seven iARGs . Similarly, intracellular and extracellular MGEs were effectively reduced with an initial pH of 3 and 5. The abundance of MGEs and four ARGs were enriched with an initial pH of 7 and 11. The redundancy analysis (RDA) indicated that pH values and microbial communities were correlated with the change of ARGs . Acidic conditions can significantly reduce the diversity and abundance of the microbial community, resulting in the elimination of MEGs and ARGs. These findings are critical for risk assessment and management of ARGs. © 2022, The Authors. All rights reserved.

关键词： Microorganisms

Efficient Incorporation of Highly Migratory Thallium into Struvite Structure: Unraveling the Stabilization Mechanisms from a Mineralogical Perspective

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SSRN 2024年

作者： Wang, Chao Jiang, Ting Huang, Junwei Chen, Min Hu, Huimin Peng, Lei Zeng, Chaocheng Zhang, Qiwu School of Resources and Environmental Engineering Wuhan University of Technology Wuhan430070 China State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control South China Institute of Environmental Sciences Ministry of Ecology and Environment Guangzhou510655 China

The emergency treatment of thallium (Tl+) contamination in highly concentrated Tl-containing wastewater is receiving a great deal of attention. Although intensive investigations on the use of adsorption and oxidation for the treatment of Tl+ are available, further challenge exists to overcome the limitations in performance. The purpose of this work is to study the feasibility of achieving both emergency treatment of Tl-containing wastewater and the mechanism of entry of Tl+ into mineral structure directly. Struvite structure has been chosen to provide a geometric framework for Tl+ incorporation through the ionic exchange of NH4+ with Tl+, with the final exchange amount high enough to serve for the emergency disposal of wastewater. Moreover, a series of characterizations such as XRD, XPS, FTIR, SEM-EDS, and TG combined with the density functional theory (DFT) calculations were used to gain insight into the mechanism of Tl+ immobilization or release in or out of struvite structure. The confirmed excellent incorporation performances both for the simulation of thallium-containing wastewater and for the disposal of actual wastewater indicated the reasonability of applying mineralogy for environmental remediation. © 2024, The Authors. All rights reserved.

关键词： Ion exchange

Cufe2o4@Ncnts-Functionalized Ceramic Microfiltration Membrane for Antibiotic Oxidation and Fouling control Via Heterogeneous Electro-Fenton Reaction

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SSRN 2024年

作者： Zhang, Zixin Huang, Guohe Li, Yongping Yao, Yao Zhang, Peng Chen, Xiujuan Ren, Shaojie Luo, Yifei Zhang, Yuanzheng State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing100875 China State Key Joint Laboratory of Environmental Simulation and Pollution Control China-Canada Center for Energy Environment and Ecology Research UR-BNU School of Environment Beijing Normal University Beijing100875 China Environmental Systems Engineering Program University of Regina ReginaSKS4S 0A2 Canada Institute for Energy Environment and Sustainable Communities University of Regina ReginaS4S 0A2 Canada Department of Civil Engineering The University of Texas at Arlington ArlingtonTX United States Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and Engineering Shandong University Qingdao266237 China College of Environmental Science and Engineering North China Electric Power University Beijing102206 China

Herein, we reported an electrocatalytic ceramic microfiltration membrane functionalized with CuFe2O4 nanoparticles supported by nitrogen-doped carbon nanotubes (NCNTs). The synergistic catalysis between Fe and Cu induced a continuous ·OH generation. The active Fe(II) and Cu(I) sites decomposed the in-situ generated H2O2 into ·OH. The electron transfer from the external circuit and Cu(I) to Fe(III) drove the regeneration of Fe(II). The interfacial electron transfer from CuFe2O4 to NCNTs decreased the electron density of Fe and Cu, thus facilitating the redox cycles of Fe(III)/Fe(II) and Cu(II)/Cu(I). Furthermore, the Fe and Cu sites at the interface of CuFe2O4 and NCNTs displayed a superior ability to non-interface sites in producing ·OH. At near-neutral pH, the electrocatalytic membrane delivered excellent tetracycline removal kinetics (0.0134 min-1) and significantly alleviated the organic fouling occurring on the membrane. These findings shed new light on the development of new-generation membranes with catalytic oxidation capabilities for water treatment. © 2024, The Authors. All rights reserved.

关键词： Antibiotics

Fine-scale activity patterns of large-and medium-sized mammals in a deciduous broadleaf forest in the Qinling Mountains,China

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Journal of Forestry Research 2021年第6期32卷 2709-2717页

作者： Yuke Zhang Xiangbo He Xuehua Liu Melissa Songer Haishan Dang Quanfa Zhang State Key Joint Laboratory of Environmental Simulation and Pollution Control and School of Environment Tsinghua UniversityBeijing 100084People’s Republic of China Foping Nature Reserve Foping CountyShaanxi 723400People’s Republic of China Conservation Ecology Center Smithsonian Conservation Biology InstituteFront RoyalVA 22630USA Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden of the Chinese Academy of SciencesWuhan 430074People’s Republic of China

The composition of animal species and interactions among them are widely known to shape ecological communities and fine-scale(e.g.,<1 km)monitoring of animal communities is essential for understanding the relationships among animals and *** the co-existence of large-and medium-sized species has been studied across different scales,research on fine-scale interactions of herbivores in deciduous broadleaf forests is *** trapping of large-and medium-sized mammals was carried out over a 1 year period within a 25 ha deciduous broadleaf forest dynamics plot in the Qinling Mountains,*** species of large-and medium-sized mammals,including six carnivores,six ungulates,one primate and one rodent species were *** density estimations were used to analyse the diel or 24 h activity patterns of all species with more than 40 independent detections and general linear models were developed to explore the spatial relationships among the *** combination of overlapping diel activity patterns and spatial associations showed obvious niche separation among six species:giant panda(Ailuropoda melanoleuca David),takin(Budorcas taxicolor Hodgson),Reeves’s muntjac(Muntiacus reevesi Ogilby),tufted deer(Elaphodus cephalophus Milne-Edwards),Chinese serow(Capricornis milneedwardsii David)and wild boar(Sus scrofa Linnaeus).Long-term fine-scale monitoring is useful for providing information about the co-existence of species and their *** results demonstrate the importance for fine-scale monitoring of animals and plants for improving understanding of species interactions and community dynamics.

关键词： Large-and medium-sized mammals Fine-scale interaction Camera trapping Spatiotemporal patterns Forest dynamics plots Qinling mountains

Uncovering the Risk Spillover of Agricultural Water Scarcity by Simultaneously Considering Water Quality and Quantity

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SSRN 2023年

作者： Li, Hui Chen, Qionghong Liu, Gengyuan Lombardi, Ginevra Virginia Su, Meirong Yang, Zhifeng State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Beijing Normal University Beijing100875 China Advanced Interdisciplinary Institute of Environment and Ecology Beijing Normal University Zhuhai Campus Zhuhai519087 China Department of Economies and Management University of Firenze Via delle Pandette 9 Firenze50127 Italy Research Center for Eco-environmental Engineering Dongguan University of Technology Dongguan523808 China State Key Laboratory of Water Environmental Simulation China

Not only insufficient water quantity, but also inadequate water quality can pose constraints on agricultural production and result in potential economic losses. Such economic losses in agriculture may adversely impact downstream producers through reduced input supplies. In this study, we developed an index assessing potential economic losses in agriculture under both quantity- and quality-induced water scarcity, termed integrated Agricultural Water Scarcity Risk (AWSR). Combining integrated AWSR with a multi-regional input-output model, we estimated the spillovers of integrated AWSR along supply chains. Our results showed that the intersectoral transmission of virtual integrated AWSR (sectoral spillovers in terms of integrated AWSR) were 5 times the virtual quantity-based AWSR. pollution significantly intensifies the indirect supply-chain repercussions of agricultural water scarcity. Moreover, we identified some primary virtual integrated AWSR exporters (e.g., Jiangsu-vegetables and Shandong-swine, of which the integrated AWSR had considerable spillover effects on downstream sectors) and importers (e.g., Henan-chemical industry and Henan-textiles, which were vulnerable to upstream integrated AWSR), that could not be detected in quantity-based AWSR results. This study underscores the importance of water quality in the assessments of AWSR. Strategies to mitigate the spillovers of AWSR might be inefficient without the consideration of water quality. © 2023, The Authors. All rights reserved.

关键词： Water quality

On the applicability of the‘humic acids’nomenclature from natural ecosystems to engineering sciences

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environmental Science and Ecotechnology 2021年第2期6卷 1-2页

作者： Xinyu Zhao Beidou Xi Wenbing Tan Xiang Li Qiuling Dang Renfei Li State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing100012China State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental SciencesBeijing100012China State Environmental ProSchool of Environment Tsinghua University Beijing100084China

‘Humic acids(HA)’are the major constituents of natural organic matter(NOM)derived from the plant or biological residues by decomposition and synthesis in natural *** have been defined as relatively high molecular weight aggregates of macromolecules associations with series of highly reactive functional compounds,and considered to be as irreplaceable roles(such as the impact on global carbon and nitrogen dynamics,atmosphere,living plants,chemically reactive and NOM structure stabilization)in natural ecosystems[1].

关键词： Humic acid Engineering sciences Natural ecosystems Alkaline extraction technique

Spatial Supply-Demand Balance of Green Space in the Context of Urban Waterlogging Hazards and Population Agglomeration

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SSRN 2022年

作者： Yang, Junwen Duan, Cuncun Wang, Hao Chen, Bin State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University 100875 China College of Architecture and Civil Engineering Beijing University of Technology 100124 China

Urban green space contributes significantly to urban settlements regarding the frequent rainstorm events and population agglomeration issues, while there is a lack of understanding of the spatial match between green space supply and social demand. In this paper, an integrated evaluation framework concerning the supply-demand balance of urban green space was established. With a case study of Beijing, the urban waterlogging risk was simulated with ICM model, considering the specific demand criterion of waterlogging hazards and population needs. Then, the street-scale supply-demand balance of existing and future urban green space for the demands was quantified with Two-step Floating Catchment Area method. By comparison of the street-level balance in large rainstorms and populated areas, we finally identified the key locations where green space supply should be strengthened in Beijing. This study may provide an integrated evaluation of green space accessibility and a solid foundation for refined urban land-use planning strategies. © 2022, The Authors. All rights reserved.

关键词： Hazards

Susceptibility of patients with chronic obstructive pulmonary disease to heart rate difference associated with the short-term exposure to metals in ambient fine particles:A panel study in Beijing,China

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Science China(Life Sciences) 2022年第2期65卷 387-397页

作者： Ke Gao Xi Chen Xiaoying Li Hanxiyue Zhang Mengxiao Luan Yuan Yao Yifan Xu Teng Wang Yiqun Han Tao Xue Junxia Wang Mei Zheng Xinghua Qiu Tong Zhu State Key Joint Laboratory for Environmental Simulation and Pollution Control and Beijing Innovation Center for Engineering Science and Advanced Technology College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China Green Research Inspection and Certification Co. Ltd.Institute of Building Research Co.Ltd.in ShenzhenShenzhen 518071China Medical Research Council Centre for Environment and HealthImperial College LondonDepartment of Epidemiology and BiostatisticsLondon W21PGUK Institute of Reproductive and Child Health/Ministry of Health Key Laboratory of Reproductive Health and Department of Epidemiology and Biostatistics School of Public HealthPeking UniversityBeijing 100191China

Susceptibility of patients with chronic obstructive pulmonary disease(COPD)to cardiovascular autonomic dysfunction asso-ciated with exposure to metals in ambient fine particles(PM2.5,particulate matter with aerodynamic diameter≤2.5µm)remains poorly *** on the COPDB(COPD in Beijing)panel study,we aimed to compare the associations of heart rate(HR,an indicator of cardiovascular autonomic function)and exposure to metals in PM2.5 between 53 patients with COPD and 82 healthy controls by using linear mixed-effects *** all participants,the HR levels were significantly associated with interquartile range increases in the average concentrations of Cr,Zn,and Pb,but the strength of the associations differed by exposure time(from 1.4%for an average 9 days(d)Cr exposure to 3.5%for an average 9 d Zn exposure).HR was positively associated with the average concentrations of PM2.5 and certain metals only in patients with *** between HR and exposure to PM2.5,K,Cr,Mn,Ni,Cu,Zn,As,and Se in patients with COPD significantly differed from those in health ***,association between HR and Cr exposure was robust in COPD *** conclusion,our findings indicate that COPD could exacerbate difference in HR following exposure to metals in PM2.5.

关键词： metal in fine particles chronic obstructive pulmonary disease(COPD) susceptibility heart rate cardiovascular auto-nomic function

Comparison of Three Source Apportionment Methods Based on Observed and Initial Hcho in Taiyuan, China

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SSRN 2023年

作者： Cui, Yang Hua, Jingya He, Qiusheng Guo, Lili Wang, Yonghong Wang, Xinming School of Environment and Resources Taiyuan University of Science and Technology Taiyuan030024 China Taiyuan University of Science and Technology China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China Guangzhou510640 China

Identifying the sources of formaldehyde (HCHO) is the key to reducing the pollution of HCHO and ozone (O3) on the ground level. Using the same data sets applied to the positive matrix factorization (PMF) model by (Hua et al. 2023), the initial concentrations of the HCHO were estimated using the photochemical age and the sources of observed and initial HCHO were apportioned based on multiple linear regression (MLR) and photochemical age-based parameterization (PCAP) method. The results suggested that the source of initial HCHO could better reflect its contribution. The secondary formation contributed to 49.3-69.1% of initial HCHO at four sites in Taiyuan based on MLR, which were higher (7.4-36.2%) than the contributions of secondary formation from observed HCHO. The HCHO was mainly affected by anthropogenic secondary (10.8-34.4%) and background sources (17.4-78.7%) based on PCAP method. We compared the results of HCHO sources from MLR, PCAP and PMF models under the condition of photochemical loss. There was good agreement among the emission ratio of HCHO based on acetylene obtained by different methods at four sites. The correlation analysis of different source apportionment methods illustrated that primary emissions from the PCAP and the MLR model had greatest correlation (0.22-0.60). The secondary formation from PMF model and the MLR model showed good correlations at all four sites, with R values ranging from 0.42 to 0.83. The HCHO peak of diurnal variation simulated by the MLR appeared late compared with other methods, and the difference of daily variation of HCHO from the PMF model was significantly higher than that of PCAP and MLR. The overlapping conclusions of different source apportionment method should be seriously considered and used to guide efforts in improving air quality. © 2023, The Authors. All rights reserved.

关键词： Multiple linear regression

Integration of Physical Solution and Ionic Liquid Toward Efficient Phase Splitting for Energy-Saving Co2 Capture

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SSRN 2023年

作者： Li, Jinyang Zhao, Yuzheng Zhan, Guoxiong Xing, Lei Huang, Zhoulan Chen, Zhen Deng, Yanxi Li, Junhua Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources School of Materials Science and Technology China University of Geosciences Beijing100083 China State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China

Carbon dioxide (CO2) capture from flue gas is crucial for achieving industrial carbon neutrality. Using a biphasic solvent can significantly reduce the volume of regenerated solvent for energy-saving carbon capture. In this study, a novel strategy for biphasic solvent preparation is proposed by combining amine blends (3,3'-Diaminodipropylamine (DADPA)/N-Methyldiethanolamine (MDEA)) and composite agents (1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BN) and sulfolane (TMS)) to achieve rapid phase splitting. The screened proportion of DADPA:MDEA:TMS:BN:H2O was 2:6:2:1:2 (labelled DMTB). Experimental evaluation revealed that the DMTB solvent exhibits a high CO2 capacity of 4.59 mol/L and a low viscosity of approximately 50vol% in the rich phase (109 mPa*S). In particular, complete phase separation was achieved within 3 min, with a phase splitting efficiency and carbon enrichment rate of approximately 100%, which is superior to that of the current biphasic solvents. The 13C nuclear magnetic resonance results indicated the formation of DADPACOO- in the CO2-saturated phase in the presence of water rather than bicarbonate while observing dissociative behaviour in MDEA and TMS. Therefore, the phase separation analysis revealed that the products of protonated amines and carbamic acid species were highly polar and preferred to dissolve in the water phase. The physical solvents TMS and BN facilitated the extraction of water and were distributed in the organic phase. This study provides an optional biphasic solvent with phase splitting ability for CO2 capture from flue gas. © 2023, The Authors. All rights reserved.

关键词： Carbon dioxide