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Functional profiles of soil microbial communities in the alpine and temperate grasslands of China

Grassland Research 2022年第1期1卷 3-13页

作者： Yunfeng Yang Jizhong Zhou Xue Guo State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijingChina Institute for Environmental Genomics and Department of Microbiology and Plant Biology University of OklahomaNormanOklahomaUSA School of Civil Engineering and Environmental Sciences University of OklahomaNormanOklahomaUSA Earth and Environmental Sciences Lawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA

Grassland ecosystems in cold regions are typical of short growing seasons and limited primary productivity,rendering soil microorganisms as major ecosystem engineers in governing biogeochemical *** warming and extensive livestock grazing have dramatically influenced soil microbial diversity and function in grassland worldwide,but it remains elusive how functional microbial communities exist and respond to global ***,we present a review to highlight similarities and differences in soil functional microbial communities between alpine grasslands in the Qinghai-Tibet Plateau and temperate grasslands in the Inner Mongolian Plateau,both of which are major plateaus in China,but differ substantially in *** show that many specialized functional groups thrive under harsh conditions,exhibiting a high functional *** community compositions mirror the heterogeneity and complexity of grassland ***,functional microbial responses to environmental changes have been extremely variable,with few consistent patterns across both *** we identify a lack of technical standardization that prevents in-depth comparative studies for functional microbial communities,we conclude the review by outlining several research gaps that need to be filled in future studies.

关键词： climate changes functional microbial communities grassland soils grazing Inner Mongolian Plateau Qinghai-Tibet Plateau

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Large-Scale Membrane Bioreactors for Industrial Wastewater Treatment in China:Technical and Economic Features,Driving Forces,and Perspectives

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Engineering 2021年第6期7卷 868-880页

作者： Jiao Zhang Kang Xiao Ziwei Liu Tingwei Gao Shuai Liang Xia Huang State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China College of Environmental Science and Engineering Beijing Forestry UniversityBeijing 100083China Research and Application Center for Membrane Technology School of EnvironmentTsinghua UniversityBeijing 100084China

Membrane bioreactors(MBRs)have been and will continue playing an important role in industrial wastewater treatment and reuse in *** sustainable development of MBR technology in its mature-application stage requires reciprocal interactions between engineering and research ***,in this study,a total of 182 large-scale MBR projects treating industrial wastewater(with individual treatment capacities5000 m3d1)commissioned and under construction from 2003 to 2019 were analyzed *** growth of the cumulative treatment capacity was observed,with extension to diverse industries,and the super large-scale was enhanced *** treatment processes,pollutant removal efficiencies,and actual operational parameters were summarized regarding the particularity of industrial wastewater compared to municipal *** features including the total investment costs of the projects,their total footprint,and their operational energy consumption were analyzed as well.A vigorous MBR market has formed in China with the fast development of membrane elements and engineering suppliers,continuously increasing official oriented projects,and responsive and innovative business *** technology has been mostly applied in specific economic zones and water-deficient areas,but its widespread use all over China is foreseeable considering the vast future market for industrial wastewater treatment and *** policy–economy and market–technology driving forces revealed that MBR is consistent with the national development *** to the survey and analysis,prospective development in both engineering and research aspects of MBR is proposed to maintain its competitive edge.

关键词： Full-scale application Treatment capacity Parameter Footprint Geographic demand Policy

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Sequential separation of Cu(Ⅱ)/Ni(Ⅱ)/Fe(Ⅱ)from strong-acidic pickling wastewater with a two-stage process based on a bi-pyridine chelating resin

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Chinese Chemical Letters 2021年第9期32卷 2792-2796页

作者： Yingzhi Lv Lidan Zong Zicheng Liu Jianwei Du Fenghe Wang Yanhong Zhang Chen Ling Fuqiang Liu State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China College of Biology and the Environment Nanjing Forestry UniversityNanjing 210037China South China Institute of Environmental Sciences Ministry of Ecology and EnvironmentGuangzhou 510530China Jiangsu Key Laboratory of Material Cycle and Pollution Control School of EnvironmentNanjing Normal UniversityNanjing 210023China Jiangsu Provincial Key Laboratory of Environmental Engineering Jiangsu Provincial Academy of Environmental ScienceNanjing 210036China

A self-synthesized bi-pyridine chelating resin(PAPY)could separate Cu(Ⅱ)/Ni(Ⅱ)/Fe(Ⅱ)sequentially from strong-acidic pickling wastewater by a two-stage p H-adjusted process,in which Cu(Ⅱ),Ni(Ⅱ),and Fe(Ⅱ)were successively preferred by *** the first stage(p H 1.0),the separation factor of Cu(Ⅱ)over Ni(Ⅱ)reached 61.43 in Cu(Ⅱ)-Ni(Ⅱ)-Fe(Ⅱ)*** the second stage(p H 2.0),the separation factor of Ni(Ⅱ)over Fe(Ⅱ)reached 92.82 in Ni(Ⅱ)-Fe(Ⅱ)*** was placed on the selective separation of Cu(Ⅱ)and Ni(Ⅱ)in the *** adsorption amounts of Cu(Ⅱ)onto PAPY were 1.2 mmol/g in the first stage,while those of Ni(Ⅱ)and Fe(Ⅱ)were lower than 0.3 mmol/***(Ⅱ)adsorption was hardly affected by Ni(Ⅱ)with the presence of dense Fe(Ⅱ),but Cu(Ⅱ)inhibited Ni(Ⅱ)adsorption *** of preloaded Ni(Ⅱ)could be replaced by Cu(Ⅱ)based on the replacement *** with the absence of Fe(Ⅱ),dense Fe(Ⅱ)could obviously enhance the separation of Cu(Ⅱ)-Ni(Ⅱ).More than 95.0%of Cu(Ⅱ)could be removed in the former 240 BV(BV for bed volume of the adsorbent)in the fixed-bed adsorption column process with the flow rate of 2.5 BV/*** proved by X-ray photoelectron spectrometry(XPS)and density functional theory(DFT)analyses,Cu(Ⅱ)exerted a much stronger deprotonation and chelation ability toward PAPY than Ni(Ⅱ)and Fe(Ⅱ).Thus,the work shows a great potential in the separation and purification of heavy metal resources from strong-acidic pickling wastewaters.

关键词： Bi-pyridine chelating resin Separation Dense Fe(Ⅱ) Strong-acidity Pickling wastewater

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Graphene-Diyne-Supported Single Transition Metal Atom Catalysts for Co₂ Capture and Co₂ Hydrogenation Conversion

SSRN

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SSRN 2025年

作者： Zhang, Runze Niu, Xiaowei Chen, Zhen Ding, Juan Wang, Chengxin Tang, Yixuan Hou, Yongxia Huang, Jiayi Wang, Yun College of Environment Liaoning Province Pollution Environmental Remediation Technology Innovation Center Liaoning Key Laboratory of Clean Energy and Carron-Neutral Technology Shenyang University Shenyang110044 China State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China Jiaxing Nanhu University School of Mechanical and Electrical Engineering Zhejiang314001 China Shenyang University China

The rising concentration of carbon dioxide (CO₂), a significant greenhouse gas, demands efficient strategies for its capture and conversion into valuable chemicals. Traditional catalysts face challenges like low efficiency and poor selectivity in CO₂ reduction reactions (CO₂RR). This study uses first-principles calculations to explore graphene-diyne (GDY) supported single-atom transition metal catalysts (Ni, Fe, Mo, Ru) for CO₂ capture and hydrogenation. The results show that Ru@GDY demonstrates the highest catalytic activity with strong CO₂ adsorption energy (-0.82 eV) and efficient pathways for producing methane (CH₄) and methanol (CH₃OH). Mo and Fe also exhibit stable structures and significant potential for CO₂ activation. Analysis of bandgap tuning, charge transfer, and reaction intermediates (*HCO, *COH) reveals how metal-carbon bonding enhances catalyst performance. This research advances the understanding of single-atom catalysts and provides insights for designing efficient systems for CO₂ capture and conversion, contributing to sustainable energy solutions © 2025, The Authors. All rights reserved.

关键词： Hydrogenation

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Epilithic biofilm as a reservoir for functional virulence factors in wastewater-dominant rivers after WWTP upgrade

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Journal of environmental Sciences 2021年第3期33卷 27-35页

作者： Guannan Mao Jinsong Liang Qiaojuan Wang Chen Zhao Yaohui Bai Ruiping Liu Huijuan Liu Jiuhui Qu Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Harbin Institute of Technology School of Civil and Environmental EngineeringShenzhen 518055China 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

Virulence factors(VFs)confer upon pathogens the ability to cause various types of damage or *** treatment plants(WWTPs)are important point sources for the emission of pathogens and VFs into receiving *** WWTP upgrades are often implemented to improve the water quality of receiving ***,knowledge on the pathogens,VFs,and health risks to receiving aquatic ecosystems after upgrade remains *** this study,we investigated detailed pathogenic information,including taxa,pathogenicity,and health risk,in two wastewater-dominant rivers after WWTP *** 16S rRNA gene sequencing,we screened 14 potential pathogens in water and epilithic biofilm samples,though they were significantly more enriched in the *** 16S rRNA and metagenomic sequencing data,we identified Pseudomonas and Aeromonas as the dominant pathogenic taxa carrying functional VFs(e.g.,mobility and offensive)in the epilithic ***,strong pathogen-specific VF-host co-occurrence events were observed in the epilithic biofilm samples,indicating the importance of biofilms as reservoirs and vehicles for ***,we demonstrated that mobility VF is crucial for biofilm formation and pathogens in biofilm carrying offensive VF may be highly *** and health risk assessment suggested that the skin contact risk of *** carrying VFs was higher than the acceptable probability of 10^(-4)in both water and epilithic biofilm samples,which may threaten ecological and human health.

关键词： Wastewater treatment plant upgrade Epilithic biofilm Pathogens Virulence factors Health risk

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New mechanism of FA in composted sludge inducing Cu fixation on Albite in open-pit mine soil

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Journal of environmental Sciences 2022年第6期34卷 142-150页

作者： Jiapeng Wan Yifan Zeng Mei Wang Bin Dong Zuxin Xu State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China YANGTZE Eco-Environment Engineering Research Center China Three Gorges CorporationBeijing 100038China Shanghai Investigation Design&Research Institute Co.Ltd Shanghai 200335China

Fulvic acid(FA),typical organic matter derived from humification process in composted sludge,possesses the potential to remediate mine soils contaminated by heavy *** understand the cooper(Cu)immobilizing process in open-pit mine soil induced by FA,changes of Cu speciation in mixture of open-pit mine soil and composted sludge was tracked over 180 *** was observed that the organic-bound and residual fraction of Cu increased dramatically with the corresponding decrease of Fe/Mn oxide-bound Cu in the first 60 days,then the organic-bound fraction decreased to about its initial proportion during 60-120 days,while residual fraction still increased,and the proportion of residual Cu accounted for over85%and became stable after 120 *** reveal the mechanism of FA inducing Cu fixation on Albite which is the main phase of soil primary ore,two groups of Cu adsorption experiments with and without FA were *** the addition of FA,the adsorption capacity of Cu by Albite increased by 1.55 times and the content of residual Cu in Albite increased by7.7 *** was found that the Cu absorbed in smaller Albite particle induced by FA formed a secondary mineral——Chrysocolla,causing increase of residual fraction of *** results revealed the mechanism:FA was absorbed on the surface of Albite after complexing with Cu ions in the solution,and then it induced Cu into the interlayer and pore channels of *** Cu in the Albite was immobilized by forming Chrysocolla finally.

关键词： Fulvic acid Composted sludge Heavy metal Open-pit mine Mineralization

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Micro-nanobubble–assisted As(III) removal from water by Ni-doped MOF materials

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environmental Science and pollution Research 2024年第31期31卷 43913-43926页

作者： Ye, Jian Zuo, Yize Chen, Qiang Yang, Zhiming Liu, Shaobo Yang, Chunping Tan, Xiaofei Hunan University Changsha410082 China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China Shenzhen Research Institute of Hunan University Shenzhen518055 China School of Architecture and Art Central South University Changsha410083 China Academy of Environmental and Resource Sciences School of Environmental Science and Engineering Guangdong University of Petrochemical Technology Guangdong Maoming525000 China Hunan Chuke Taiyan New Materials Co. Ltd. Jishou416000 China

Micro-nanobubbles (MNBs) can form reactive oxygen species (ROS) with high oxidizing potential. In this study, nickel-doped metal–organic framework materials (MOFs) capable of activating molecular oxygen were synthesized using trivalent arsenic (As(III)) as a target pollutant and combined with peroxymonosulfate (PMS) to construct a MOF/MNB/PMS system. The results included the rapid oxidation of As(III), the successful absorption of oxidized As(V), and finally the efficient removal of As. The effects of pH, amount of PMS used, and preparation time of MNBs on the As removal performance of the MOF/MNB/PMS system were investigated experimentally. The changes in the properties of the materials before and after the reaction were analyzed by XPS, and it was found that the main active sites on the surface of the MOFs were the metal elements and the pyridine nitrogen near the carbon atom. The regular morphology and elemental composition of the MOFs were determined by TEM scanning and EDS test, which indicated the presence of nickel. XRD tests before and after the reaction showed that the MOFs were structurally stable. The results of the free radical burst experiments show that the single linear oxygen (1O2) is the main active substance in the system, and that the MNBs are key factors by which the system achieves efficient oxidation performance. In addition to providing a sustainable supply of molecular oxygen to the MOFs during the reaction process, coupling the MNBs with PMS was found to improve the oxidation capacity of the system. The results of this study thus provide a new concept for As removal and advanced oxidation in water bodies. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Molecular oxygen

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Enhanced hydrodechlorination of 4-chlorophenol through carboxymethylcellulose-modified Pd/Fe nanosuspension synthesized by one-step methods

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Chemosphere 2024年 356卷 141857页

作者： Qiao, Juan Zhao, Zhenyu Zhou, Zhengwei Wu, Deli State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science & Engineering Key Laboratory of Urban Water Supply Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water Resources Shanghai Institute of Pollution Control and Ecological Security Tongji University Shanghai200092 China

Palladized iron (Pd/Fe) represents one of the most common modification strategies for nanoscale zero-valent iron (nZVI). Most studies prepared Pd/Fe by reducing iron salts and depositing Pd species on the surface of pre-synthesized nZVI, which can be called the two-step method. In this study, we proposed a one-step method to obtain Pd/Fe by the concurrent formation of Fe0 and Pd0 and investigated the effects of these two methods on 4-chlorophenol (4-CP) removal, with carboxymethylcellulose (CMC) coated as a surface modifier. Results indicated that the one-step method, not only streamlined the synthesis process, but also Pd/Fe-CMCone-step, synthesized by it, exhibited a higher 4-CP removal rate (97.9%) compared to the two-step method material Pd/Fe-CMCtwo-step (82.4%). Electrochemical analyses revealed that the enhanced activity of Pd/Fe-CMCone-step was attributed to its higher electron transfer efficiency and more available reactive species, active adsorbed hydrogen species (Hads*). Detection of intermediate products demonstrated that, under the influence of Pd/Fe-CMCone-step, the main route of 4-CP was through hydrodechlorination (HDC) to form phenol and H* was the main active specie, supported by EPR tests, quenching experiments and product analysis. Additionally, the effects of initial 4-CP concentration, initial pH, O2 concentration, anions such as Cl−, SO42−, HCO3−, and humic acid (HA) were also investigated. In conclusion, the results of this study suggest that Pd/Fe-CMCone-step, synthesized through the one-step method, is a convenient and efficient nZVI-modifying material suitable for the HDC of chlorinated organic compounds. © 2024 Elsevier Ltd

关键词： Palladium

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Tailpipe emissions and fuel consumption of a heavy-duty diesel vehicle using palm oil biodiesel blended fuels

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Science of the Total environment 2024年 955卷 177048页

作者： He, Liqiang Li, Yang Min, Yihang Yoong, Junhao Chen, Shiqing Jiao, Jiwen Li, Zhenhua Zhu, Luole Zhang, Shaojun Wu, Ye State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation Chinese Research Academy of Environmental Sciences Beijing100012 China School of Environment State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua University Beijing100084 China Institute of Environment and Ecology Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen518055 China Malaysian Palm Oil Board Kajang43000 Malaysia Palm Oil Research and Technical Service Institute of Malaysian Palm Oil Board Shanghai201108 China Beijing Tus Deqing Bioenergy Co. Ltd Beijing100084 China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing100084 China

Biodiesel application, such as using waste cooking oil biodiesel in Shanghai, China, is a sustainable solution that addresses the challenges posed by escalating air pollution, energy security, and climate change. Future efforts may involve blending biodiesel from alternative sources like crude palm oil with diesel in China. This study tested a China V heavy-duty diesel vehicle equipped with a selective catalytic reduction (SCR) system using various palm oil biodiesel blended fuels (i.e., B0, B5, B10, and B20). The findings indicated that using biodiesel blends led to reductions in carbon monoxide (CO), hydrocarbon (HC), and particle number (PN) emissions compared to B0, while nitrogen oxide (NOX) emissions remained similar. Higher biodiesel content significantly reduced petroleum diesel consumption, but no statistically significant differences were found in total carbon dioxide (CO2) emissions and fuel consumption. Various factors such as vehicle speed, payload, and cold starts influence tailpipe emissions and fuel consumption. Specifically, high-speed phases notably reduced CO, HC, and PN emissions with the use of biodiesel blends. Lower payloads were linked to decreased CO2 emissions and fuel consumption but increased NOX emissions. Cold starts increased HC and NOX emissions, especially with higher biodiesel blending ratios. These results can provide valuable empirical insights into palm oil biodiesel emissions. © 2024 Elsevier B.V.

关键词： Low emission

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Clean air captures attention whereas pollution distracts:evidence from brain activities

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Frontiers of environmental Science & Engineering 2024年第4期18卷 5-15页

作者： Jianxun Yang Yunqi Liu Berry van den Berg Susie Wang Lele Chen Miaomiao Liu Jun Bi State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Nanjing University of Information Science&TechnologyNanjing 210044China Nanjing Foreign Language School Nanjing 210008China Department of Experimental Psychology University of GroningenGrote Kruisstraat 2/19712 TSGroningenThe Netherlands Department of Social Psychology University of GroningenGrote Kruisstraat 2/19712 TSGroningenThe Netherlands School of Education Science Nantong UniversityNantong 226019China

Awareness of the adverse impact of air pollution on attention-related performance such as learning and driving is rapidly ***,there is still little known about the underlying neurocognitive *** an adapted dot-probe task paradigm and event-related potential(ERP)technique,we investigated how visual stimuli of air pollution influence the attentional allocation *** were required to make responses to the onset of a target presented at the left or right visual *** probable location of the target was forewarned by a cue(pollution or clean air images),appearing at either the target location(attention-holding trials)or the opposite location(attention-shifting trials).Behavioral measures showed that when cued by pollution images,subjects had higher response accuracy in attention-shifting *** analysis results revealed that after the cue onset,pollution images evoked lower N300 amplitudes,indicating less attentioncapturing effects of dirty *** the target onset,pollution cues were correlated with the higher P300 amplitudes in attention-holding trials but lower amplitudes in attention-shifting *** indicates that after visual exposure to air pollution,people need more neurocognitive resources to maintain attention but less effort to shift attention *** findings provide the first neuroscientific evidence for the distracting effect of air *** conclude with several practical implications and suggest the ERP technique as a promising tool to understand human responses to environmental stressors.

关键词： Air pollution Attention Disengagement Performance Event-related potential

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