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SSRN 2024年

作者： Inostroza, Pedro A. Jessen, Gerdhard L. Li, Feilong Zhang, Xiaowei Brack, Werner Backhaus, Thomas Department of Biological and Environmental Sciences University of Gothenburg Sweden Institute for Environmental Research RWTH Aachen University Germany Instituto de Ciencias Marinas y Limnológicas Universidad Austral de Chile Chile Center for Oceanographic Research COPAS COASTAL Universidad de Concepción Chile Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds School of Ecology Environment and Resources Guangdong University of Technology Guangzhou China State Key Laboratory of Pollution Control & Resource Reuse School of the Environment Nanjing University China UFZ Helmholtz Centre for Environmental Research Department of Effect-Directed Analysis Germany Department of Evolutionary Ecology and Environmental Toxicology Goethe University Frankfurt Germany

Microbial communities, in particular bacterial assemblies, play pivotal roles in sustaining biogeochemical processes within ecosystems. They are also responsible for the degradation of toxic chemicals, while the development of resistance against antimicrobial drugs jeopardises human health. Bacterial communities respond to environmental conditions with diverse structural and functional changes depending on their compartment (water, biofilm or sediment), type of environmental stress, and type of pollution to which they are exposed. In this study, we combined amplicon sequencing of bacterial 16S rRNA genes from water, biofilm, and sediment samples collected in the anthropogenically impacted River Aconcagua basin (Central Chile, South America), in order to evaluate whether micropollutants alter bacterial community structure and functioning based on the type and degree of chemical pollution. Furthermore, we evaluated the potential of bacterial communities from differently polluted sites to degrade contaminants. Our results show a lower diversity at sites impacted by agriculture and urban areas, featuring high loads of micropollution with pesticides, pharmaceuticals and personal care products as well as industrial chemicals. Nutrients, antibiotic stress, and micropollutant loads explain most of the variability in the sediment and biofilm bacterial community, showing a significant increase of bacterial groups known for their capabilities to degrade various organic pollutants, such as Nistrospira and also selecting for taxa known for antibiotic resistance such as Exiguobacterium and Planomicrobium. Moreover, potential ecological functions linked to the biodegradation of toxic chemicals at the basing level revealed significant reductions in ecosystem-related services in sites affected by agriculture and wastewater treatment plant (WWTP) discharges across all investigated environmental compartments. Finally, we suggest transitioning from simple concentration-based assessment

关键词： Biofilms

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Alleviated cadmium toxicity in wheat (Triticum aestivum L.) by the coactive role of zinc oxide nanoparticles and plant growth promoting rhizobacteria on TaEIL1 gene expression, biochemical and physiological changes

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Chemosphere 2024年 364卷 143113页

作者： Sehrish, Adiba Khan Ahmad, Shoaib Nafees, Muhammad Mahmood, Zahid Ali, Shafaqat Du, Wenchao Kashif Naeem, Muhammad Guo, Hongyan State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Jiangsu Nanjing210023 China Islamabad Pakistan Department of Environmental Sciences Government College University Faisalabad38000 Pakistan Department of Biological Sciences and Technology China Medical University Taichung40402 Taiwan School of Environment Nanjing Normal University Jiangsu Nanjing210023 China Islamabad Pakistan Quanzhou Institute for Environment Protection Industry Nanjing University Beifeng Road Quanzhou362000 China Joint International Research Centre for Critical Zone Science-University of Leeds and Nanjing University Nanjing University Jiangsu Nanjing210023 China

Cadmium (Cd) contamination in agricultural soil is a major global concern among the multitude of human health and food security. Zinc oxide nanoparticles (ZnO-NPs) and plant growth promoting rhizobacteria (PGPR) have been known to combat heavy metal toxicity in crops. Herein, the study intended to explore the interactive effect of treatments mediated by inoculation of PGPR and foliar applied ZnO-NPs to alleviate Cd induced phytotoxicity in wheat plants which is rarely investigated. For this purpose, TaEIL1 expression, morpho-physiological, and biochemical traits of wheat were examined. Our results revealed that Cd reduced growth and biomass, disrupted plant physiological and biochemical traits, and further expression patterns of TaEIL1. The foliar application of ZnO-NPs improved growth attributes, photosynthetic pigments, and gas exchange parameters in a dose-additive manner, and this effect was further amplified with a combination of PGPR. The combined application of ZnO-NPs (100 mg L-1) with PGPR considerably increased the catalase (CAT;52.4%), peroxidase (POD;57.4%), superoxide dismutase (SOD;60.1%), ascorbate peroxidase (APX;47.4%), leading to decreased malondialdehyde (MDA;47.4%), hydrogen peroxide (H2O2;38.2%) and electrolyte leakage (EL;47.3%) under high Cd (20 mg kg-1) stress. Furthermore, results revealed a significant reduction in roots (56.3%), shoots (49.4%), and grains (59.4%) Cd concentration after the Combined treatment of ZnO-NPs and PGPR as compared to the control. Relative expression of TaEIL1 (two homologues) was evaluated under control (Cd 0), Cd, ZnO-NPs, PGPR, and combined treatments. Expression profiling revealed a differential expression pattern of TaEIL1 under different treatments. The expression pattern of TaEIL1 genes was upregulated under Cd stress but downregulated under combined ZnO-NPs and PGPR, revealing its crucial role in Cd stress tolerance. Inferentially, ZnO-NPs and PGPR showed significant potential to alleviate Cd toxicity in wh

关键词： II-VI semiconductors

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Characteristics of microbial community involved in early biofilms formation under the influence of wastewater treatment plant effluent

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Journal of Environmental Sciences 2018年第4期30卷 113-124页

作者： Yuke Peng Jie Li Junling Lu Lin Xiao Liuyan Yang School of the Environment State Key Laboratory for Pollution Control and Resource Reuse (SKL-PCRR) Nanjing University

Effluents from wastewater treatment plants（WWTPs） containing microorganisms and residual nutrients can influence the biofilm formation. Although the process and mechanism of bacterial biofilm formation have been well characterized, little is known about the characteristics and interaction of bacteria, archaea and eukaryotes in the early colonization, especially under the influence of WWTP effluent. The aim of this study was to characterize the important bacterial, archaeal and eukaryotic species in the early stage of biofilm formation downstream of the WWTP outlet. Water and biofilm samples were collected 24 and 48 hr after the deposition of bio-cords in the stream. Illumina Miseq sequencing of the 16 S and 18 S rDNA showed that, among the three domains, the bacterial biofilm community had the largest alpha and beta diversity. The early bacterial colonizers appeared to be ＂biofilm-specific＂, with only a few dominant operational taxonomic units（OTUs） shared between the biofilm and the ambient water environment. Alpha-proteobacteria and Ciliophora tended to dominate the bacterial and eukaryotic communities, respectively, of the early biofilm already at 24 hr, whereas archaea played only a minor role during the early stage of colonization. The network analysis showed that the three domains of microbial community connected highly during the early colonization and it might be a characteristic of the microbial communities in the biofilm formation process where co-occurrence relationships could drive coexistence and diversity maintenance within the microbial communities.

关键词： Wastewater treatment plant effluent Early colonization Archaea Microbial eukaryotes Network analysis

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The Weitzman Premium on the Social Cost of Carbon

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SSRN 2025年

作者： Dong, Jinchi Tol, Richard S.J. Wang, Fangzhi State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University China Department of Economics University of Sussex Falmer United Kingdom Institute for Environmental Studies Vrije Universiteit Amsterdam Netherlands Department of Spatial Economics Vrije Universiteit Amsterdam Netherlands Tinbergen Institute Amsterdam Netherlands CESifo Munich Germany Payne Institute for Public Policy Colorado School of Mines GoldenCO United States Faculty of Finance City University of Macau Taipa China Jubilee Building BN1 9SL United Kingdom School of Business Management and Economics United Kingdom

Preference heterogeneity massively increases the social cost of carbon. We call this the Weitzman premium. Uncertainty about an exponential discount rate implies a hyperbolic discount rate, which in the near term is equal to the average discount rate but in the long term falls to the minimum discount rate. We calibrate the pure rate of time preference and the inverse of the elasticity of intertemporal substitution of 79,273 individuals from 76 countries and compute the corresponding social cost of carbon. Compared to the social cost of carbon for average time preferences, the average social cost of carbon is 6 times as large in the base calibration, and up to 200 times as large in sensitivity analyses. © 2025, The Authors. All rights reserved.

关键词： Carbon sequestration

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Removal of Pb(Ⅱ) from aqueous solutions using waste textiles/poly(acrylic acid) composite synthesized by radical polymerization technique

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Journal of Environmental Sciences 2018年第5期30卷 368-377页

作者： Tao Zhou Fafa Xia Yue Deng Youcai Zhao The State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and Engineering Tongji University

Waste textiles（WTs） are the inevitable outcome of human activity and should be separated and recycled in view of sustainable development. In this work, WT was modified through grafting with acrylic acid（AA） via radical polymerization process using ceric ammonium nitrate（CAN） as an initiator and microwave and/or UV irradiation as energy supply. The acrylic acid-grafted waste textiles（WT-g-AA） thus obtained was then used as an adsorbent to remove Pb（Ⅱ） from Pb（Ⅱ）-containing wastewater. The effects of p H, initial concentrations of Pb（Ⅱ） and adsorbent dose were investigated, and around 95% Pb（Ⅱ） can be removed from the aqueous solution containing 10 mg/L at p H 6.0–8.0. The experimental adsorption isotherm data was fitted to the Langmuir model with maximum adsorption capacity of35.7 mg Pb/g WT-g-AA. The Pb-absorbed WT-g-AA was stripped using dilute nitric acid solution and the adsorption capacity of Pb-free material decreased from 95.4%（cycle 1） to91.1%（cycle 3）. It was considered that the WT-g-AA adsorption for Pb（Ⅱ） may be realized through the ion-exchange mechanism between ／COOH and Pb（Ⅱ）. The promising results manifested that WT-g-AA powder was an efficient, eco-friendly and reusable adsorbent for the removal of Pb（Ⅱ） from wastewater.

关键词： Adsorption Pb（Ⅱ） Waste textiles Graft copolymefization

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Monthly variations of unregulated brominated disinfection by-products in chlorinated water are correlated with total bromine

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Eco-Environment & Health 2022年第3期1卷 147-155页

作者： Christena Watts Jianxian Sun Paul D.Jones Hui Peng John P.Giesy Toxicology Centre University of SaskatchewanSaskatoonSK S7N 5B3Canada School of Environment and Sustainability University of SaskatchewanSaskatoonSK S7N 5C8Canada Department of Chemistry University of TorontoTorontoON M5S 3H6Canada Zoology Department Institute for Integrative ToxicologyMichigan State UniversityEast LansingMI 48824USA State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Department of Veterinary Biomedical Sciences University of SaskatchewanSaskatoonSK S7N 5B4Canada Department of Environmental Sciences Baylor UniversityWacoTX 76798-7266USA

Brominated disinfection by-products(Br-DBPs)can form during the chlorination of drinking water in treatment plants(DWTP).Regulations exist for a small subset of Br-DBPs;however,hundreds of unregulated Br-DBPs have been detected,and limited information exists on their occurrence,concentrations,and seasonal ***,a data-independent precursor isolation and characteristic fragment(DIPIC-Frag)method were optimized to screen chlorinated waters for *** were 553 Br-DBPs detected with m/z values ranging from 170.884 to 497.0278 and chromatographic retention times from 2.4 to 26.2 *** MS2 information,structures for 40 of the 54 most abundant Br-DBPs were *** method was then applied to a year-long study in which raw,clear well,and finished water were analyzed *** 54 most abundant unregulated Br-DBPs were subjected to trend ***-DBPs with higher oxygen-to-carbon(O/C)and bromine-to-carbon(Br/C)ratios increased as water moved from the clear well to the finished stage,which indicated the dynamic formation of *** trends of unregulated Br-DBPs were compared to raw water parameters,such as natural organic matter,temperature,and total bromine,but no correlations were *** was found that total concentrations of bromine(TBr)in finished water(0.04–0.12 mg/L)were consistently and significantly greater than in raw water(0.013–0.038 mg/L,P<0.001),suggesting the introduction of bromine during the disinfection *** of TBr in treatment units,rather than raw water,were significantly correlated to 34 of the Br-DBPs atα?*** study provides the first evidence that monthly trends of unregulated Br-DBPs can be associated with the concentration of TBr in treated waters.

关键词： Natural organic matter Bromine Chlorination Drinking water treatment High-resolution mass spectrometry

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Effect of biological activated carbon filter depth and backwashing process on transformation of biofilm community

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Frontiers of Environmental Science & Engineering 2019年第1期13卷 159-169页

作者： Wanqi Qi Weiying Li Junpeng Zhang Xuan Wu Jie Zhang Wei Zhang College of Environmental Science and Engineering Tongji University Shanghai 200092 China State Key Laboratory of Pollution Control and Resource Reuse Tongji University Shanghai 200092 China Chengdu Chuanli Intelligence Fluid Equipment Co. Ltd. Chengdu 611530 China

The biological activated carbon (BAC) is a popular advanced water treatment to the provision of safe water supply. A bench-scale device was designed to gain a better insight into microbial diversity and community structure of BAC biofilm by using high-throughput sequencing method. Both samples of BAC biofilm (the first, third and fifth month) and water (inlet water and outlet water of carbon filter, outlet water of backwashing) were analyzed to evaluate the impact of carbon filter depth, running time and backwash process. The results showed that the microbial diversity of biofilm decreased generally with the increase of carbon filter depth and biofilm reached a steady-state at the top layer of BAC after three months' running. Proteobacteria (71.02%-95.61%) was found to be dominant bacteria both in biofilms and water samples. As one of opportunistic pathogen, the Pseudomonas aeruginosa in the outlet water of device (1.20%) was about eight times higher than that in the inlet water of device (0.16%) at the genus level after five-month operation. To maintain the safety of drinking water, the backwash used in this test could significantly remove Sphingobacteria (from 8.69% to 5.09%, p < 0.05) of carbon biofilm. After backwashing, the operational taxonomic units (OTUs) number and the Shannon index decreased significantly (p <0.05) at the bottom of carbon column and we found the Proteobacteria increased by about 10% in all biofilm samples from different filter depth. This study reveals the transformation of BAC biofilm with the impact of running time and backwashing.

关键词： Biological activated carbon Biofilm Community structure Carbon filter depth High-throughput sequencing

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Waste Reclamation from Municipal Solid Waste for the Cost-Efficient Treatment of Landfill Leachate with a Novel Biological Trickle Reactor System

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SSRN 2022年

作者： Zhu, Zihan Su, Lianghu Zhang, Meilan Lu, Lu Zhou, Tao The State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and Engineering Tongji University 1239 Siping Road Shanghai200092 China Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment 8 Jiangwangmiao Street Nanjing210042 China Shanghai200092 China Shanghai Chengtou Environment Group Co. Ltd. Shanghai200060 China

Mature landfill leachate (MLL) would be a tough nut to crack, how to realize waste reclamation while deal with the intractable by-products deserves for more considerations. In this study, a novel system, equipped with two biological trickle reactors developed by inert wastes and a connected organic feeder using waste-recycling rotten banana powder, was established for treating MLL. Results indicated that superior pollutant removal performance and long-term stability were achieved by this system, with only COD and TN concentrations slightly higher than the relevant standard limits. But the shortage about poor resistance to shock pollution loads, was underlined by the fluctuation of water quality. Anaerobic condition and carbon source supplementation contributed to more microbial similarities but less community richness and diversity among inert fillings, and the selective enrichment of denitrification and organic-degrading strains simultaneously occurred. The comparisons with common processes demonstrated that this system was a cost-efficient choice for MLL treatment. © 2022, The Authors. All rights reserved.

关键词： Municipal solid waste

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Bioelectrochemical acidolysis of magnesia to induce struvite crystallization for recovering phosphorus from aqueous solution

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Journal of Environmental Sciences 2019年第11期31卷 119-128页

作者： Zuobin Wang Jiao Zhang Xiao Guan Lu She Pengyu Xiang Siqing Xia Zhiqiang Zhang Key Laboratory of Yangtze River Water Environment Ministry of Education State Key Laboratory of Pollution Control and Resource ReuseCollege of Environmental Science and Engineering Tongji University Shanghai 200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092 China School of Civil and Transportation Engineering Shanghai Urban Construction Vocational College Shanghai 200432 China Zhejiang Weiming Environment Protection Co. Ltd. Wenzhou 325000 China

A novel struvite crystallization method induced by bioelectrochemical acidolysis of magnesia (MgO) was investigated to recover phosphorus (P) from aqueous solution using a dual-chamber microbial electrolysis cell (DMEC).Magnesium ion (Mg2+) in the anolyte was firstly confirmed to automatically migrate from the anode chamber to the cathode chamber,and then react with ammonium (NH4+) and phosphate (PO34-) in the catholyte to form *** efficiency of 17.8%-60.2% was obtained with the various N/P ratios in the *** MgO (low solubility under alkali conditions) was added into the anolyte,the bioelectrochemical acidolysis of MgO naturally took place and the released Mg2+ induced struvite crystallization in the cathode chamber for P recovery ***,there was a strong linear positive correlation between the recovery efficiency and the MgO dosage (R2 =0.935),applied voltage (R2 =0.969) and N/P ratio (R2 =0.905).Increasing the applied voltage was found to enhance the P recovery via promoting the MgO acidolysis and the released Mg2+ migration,while increasing the N/P ratio in the catholyte enhanced the P recovery via promoting the struvite ***,the electrochemical performance of the system was promoted due to more stable anolyte pH and lower pH gradient between the two *** density was promoted by 10%,while the COD removal efficiency was improved from 78.2% to 91.8% in the anode chamber.

关键词： Phosphorus Struvite Microbial electrolysis cell Magnesia Acidolysis Migration

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Semi-analytical model of heat transport around a well with wellbore mixing effect under multi-step flow rate

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Journal of Hydrology 2023年第PartA期625卷

作者： Shi, Wenguang Wang, Quanrong Yan, Haitao Fu, Xiaogang Kuo, Yi-Ming Zhou, Renjie School of Environmental Studies China University of Geosciences 388 Lumo Road Wuhan430074 China State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution Ministry of Ecology and Environment Hubei Wuhan430074 China Hubei Key Laboratory of Yangtze River Basin Environmental Aquatic Science School of Environmental Studies China University of Geosciences Hubei Wuhan430074 China CCCC Second Highway Consultants Co. Ltd. Wuhan430056 China Hebei GEO University Shijiazhuang050031 China Department of Forestry and Natural Resources National Chiayi University 300 Syuefu Rd. Chiayi City60004 Taiwan Department of Environmental and Geosciences Sam Houston State University HuntsvilleTX77340 United States

Modeling heat transport around a well is critical for evaluations of aquifer thermal energy storage (ATES). In this study, an innovative heat transport model considering the wellbore mixing effect under multi-step flow rate in an aquifer system is proposed, where thermal conduction, thermal dispersion, and convection occur in the aquifer. Wellbore mixing effect refers to the influence of mixing processes between the injected water and original water in the well on heat transport in aquifer, which was ignored in existing models. A semi-analytical solution derived from Laplace transform method and Green's function method has been validated by the numerical modeling and field experimental studies. Results show that the wellbore mixing effect should not be ignored in analyzing heat transport around a well in the ATES system, and the new solution satisfactorily interprets the field data. The influence of the thermal dispersion on thermal transfer near the injection/extraction well is sensitive and should not be negligible. Morris global sensitivity analysis demonstrates that the output temperature is most sensitive to the variations of the parameters of wellbore water volume and extraction rate than the others. The influence of water volume decreases with time, and the most sensitive parameter becomes extraction rate in the late stage of the extraction phase. The newly developed model can shed some light on the thermal transfer processes in the ATES system and better interpret the experimental data of the single-well push–pull tests. © 2023 Elsevier B.V.

关键词： Aquifers

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