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Single and combined effects of secondary polyethylene microplastic on the growth of Pak choi and the soil microbiome composition

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Frontiers of environmental Science & Engineering 2024年第5期18卷 1-12页

作者： Jiamin Hu Zhenwen Xie Jiane Zuo State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen518055China

It has been confirmed that microplastics(MPs)are present in the *** study simulated secondary PE-MPs via aging and mechanical processes to evaluate their effects on Pak choi(Brassica rapa L.)over 21 *** common pollutants,dichlorodiphenyltrichloroethane(DDT)and naphthalene,were used in the combined toxicity *** results indicated that the growth of Pak choi was significantly inhibited after exposure to secondary PE-MPs,and the combined effects were antagonistic,owing to the adsorption capacity of secondary PE-MPs to DDT and *** stress in Pak choi can be markedly affected,leading to oxidative damage to plant *** moisture content,soil bulk density,soil density,cation exchange capacity(CEC),and FDA hydrolase in the planted soils increased in the treated groups,and the TOC content changed *** also found that the microbial composition of the soil in the DDT and naphthalene groups showed more significant alterations than that in the other *** diversity analysis showed that species diversity increased in the combined groups but indicated a clear downward trend in the single MPs *** study suggests that secondary PE-MPs harm the growth of Pak choi and can change soil properties,revealing the harm to the ecosystem of MPs in the soil.

关键词： Secondary PE-MPs Combined effects Oxidative stress Soil properties Bacterial community

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Highly stable carbon-coated nZVI composite Fe0@RF-C for efficient degradation of emerging contaminants

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environmental Science and Ecotechnology 2024年第6期22卷 233-244页

作者： Guizhou Xu Lin Sun Yizhou Tu Xiaolei Teng Yumeng Qi Yaoyao Wang Aimin Li Xianchuan Xie Xueyuan Gu State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing210023China Key Laboratory of Poyang Lake Environment and Resource Utilization Engineering Research Center of Watershed Carbon NeutralizationMinistry of EducationSchool of Resource and EnvironmentNanchang UniversityNanchang330031China Nanjing University&Yancheng Academy of Environment Protection Technology and Engineering Nanjing210023China Jiangxi Nanxin Environmental Protection Technology Co.LTD Jiujiang CityJiangxi Province330300China

Nanoscale zerovalent iron(nZVI)has garnered significant attention as an efficient advanced oxidation activator,but its practical application is hindered by aggregation and *** nZVI with carbon can effectively addresses these issues.A simple and scalable production method for carbon-coated nZVI composite is highly *** anti-oxidation and catalytic performance of carbon-coated nZVI composite merit in-depth *** this study,a highly stable carbon-coated core-shell nZVI composite(Fe0@RF-C)was successfully prepared using a simple method combining phenolic resin embedding and carbothermal ***0@RF-C was employed as a heterogeneous persulfate(PS)activator for degrading 2,4-dihydroxybenzophenone(BP-1),an emerging *** to commercial nZVI,Fe0@RF-C exhibited superior PS activation performance and oxidation *** 95%of BP-1 was removed within 10 min in the Fe0@RF-C/PS *** carbon layer promotes the enrichment of BP-1 and accelerates its degradation through singlet oxygen oxidation and direct electron transfer *** study provides a straightforward approach for designing highly stable carbon-coated nZVI composite and elucidates the enhanced catalytic performance mechanism by carbon layers.

关键词： Nanoscale zerovalent iron Carbon-coated nZVI Persulfate BP-1 Enhanced degradation

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Effects and mechanisms of heavy metal ions on microbial enzymes in anaerobic digestion

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environmental Technology Reviews 2025年第1期14卷 488-498页

作者： Li, Wei-Hua Chen, Zhi-Hao Huang, Meng-Zhen Xu, Jia-Jia Xue, Tong-Zhan School of Environmental and Energy Engineering Anhui Jianzhu University Hefei China School of Architectural Engineering Tongling University Tongling China Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse Hefei China

Microbial enzymes are the main functional enzymes responsible for the decomposition of organic matter with complex structural features and play a crucial role in anaerobic digestion. The effects of heavy metal ions on microbial enzymes varied significantly depending on the species, concentrations and modes of action. The study not only provides a nuanced understanding of effects of heavy metal ions on microbial enzymes, but also demonstrates the influence of their mechanism of action. To gain a better understanding of the impact of heavy metal ions on microbial enzymes, valuable insights can be obtained for enhancing the anaerobic digestion of high-load organic wastewater. Therefore, it is necessary to explore the regulation methods of heavy metals and their effects on the anaerobic digestion. Therefore, it is necessary to explore the regulation methods of heavy metals and their effects on the anaerobic digestion, further analysed the toxicity of microorganisms in the process of anaerobic digestion, and revealed the mechanism of the effects of heavy metal ions on microbial enzymes in the anaerobic digestion. Finally, the effects of different concentrations and types of heavy metal ions on mircobial enzymes were prospected. This study not only provides a theoretical basis for further research but also offers novel ideas for future studies. © 2025 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Enzyme activity

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La^(3+)@BC500-S_(2)O_(8)^(2−)system for removal of sulfonamide antibiotics in water

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Journal of environmental Sciences 2024年第12期146卷 140-148页

作者： Bing Wang Dongsu Bi Juan Wang Hengbo Qiao Yalei Zhang Zheng Shen School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China State Key Laboratory of Pollution Control and Resources Reuse Key Laboratory of Yangtze River Water Environment of MOENational Engineering Research Center of Protected AgricultureShanghai Engineering Research Center of Protected AgricultureTongji UniversityShanghai 200092China

Sulfonamide antibiotics(SAs)widely used have potentially negative effects on human beings and *** and advanced oxidation methods have been exten-sively applied in SAs wastewater *** this study,compared with Al^(3+)@BC500 and Fe^(3+)@BC500,La^(3+)@BC500 for activating persulfate(S2O82−)had the best effect removal per-formance of sulfadiazine(SDZ)and sulfamethoxazole(SMX).Morphology,acidity,oxygen-containing functional groups,and loading of La^(3+)@BC500 were analyzed by techniques,in-cluding EA,BET,XRD,XPS,*** results show that with the increase of La^(3+)loading,the surface characteristics of biochar gradually changed from CaCO_(3)to LaCO_(3)*** EPR technology,it is proved that LaCO_(3)OH on the surface of La^(3+)@BC500 can not only acti-vate S2O82−to generate SO_(4)^(−)•,but also to produce•*** the optimization experiment,the optimal dosage of La^(3+)is between 0.05 and 0.2(mol/L)/*** had a good removal effect at pH(5-9),but SMX had a good removal effect only at pH=*** potential also proves that the material is more stable under acidic *** removal process of SDZ is more in accord with pseudo-first-order kinetics(R^(2)=0.9869),while SMX is more in line with pseudo-second order kinetics(R^(2)=0.9926).

关键词： Sulfadiazine Sulfamethoxazole La^(3+)@BC500 Persulfate

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Emission of greenhouse gases from sewer networks:field assessment and isotopic characterization

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Frontiers of environmental Science & Engineering 2024年第10期18卷 1-13页

作者： Xin Yuan Xianguo Zhang Yuqi Yang Xuan Li Xin Xing Jiane Zuo State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Capital Eco-Pro Group Beijing 100444China Tsinghua Shenzhen International Graduate School Shenzhen 518055China

Sewer networks play a vital role in sewage collection and transportation,and they are being rapidly ***,the microbial processes occurring within these networks have emerged as significant contributors to greenhouse gas(GHG)*** to that from other sectors,our understanding of the magnitude of GHG emissions from sewer networks is currently *** this study,we conducted a GHG emission assessment in an independent sewer network located in Beijing,*** findings revealed annual emissions of 62.3 kg CH_(4) and 0.753 kg ***_(4) emerged as the primary GHG emitted from sewers,accounting for 87.4%of the total GHG ***,compared with main pipes,branch pipes were responsible for a larger share of GHG emissions,contributing to 76.7%of the total.A GHG emission factor of 0.26 kg CO_(2)-eq/(m:yr)was established to quantify sewer GHG *** examining the isotopic signatures of CO_(2)/CH_(4) pairs,it was determined that CH_(4) production in sewers primarily occurred through acetate ***,the structure of sewer pipes had a significant impact on GHG *** study offers valuable insights into the overall GHG emissions associated with sewer networks and sheds ight on themechanismsdriving theseemissions.

关键词： Sewer network Greenhousegases Stablecarbon isotopes Methane Nitrous oxide

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Synergetic PM_(2.5) and O_(3) control strategy for the Yangtze River Delta,China

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Journal of environmental Sciences 2023年第1期123卷 281-291页

作者： Zhaoxin Dong Jia Xing Fenfen Zhang Shuxiao Wang Dian Ding Hongli Wang Cheng Huang Haotian Zheng Yueqi Jiang Jiming Hao State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China State Environmental Protection Key Laboratory of the Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental SciencesShanghai 200233China

PM_(2.5)concentrations have dramatically reduced in key regions of China during the period 2013-2017,while O_(3)has *** there is an urgent demand to develop a synergetic regional PM_(2.5)and O_(3)control *** study develops an emission-to-concentration response surface model and proposes a synergetic pathway for PM_(2.5)and O_(3)control in the Yangtze River Delta(YRD)based on the framework of the Air Benefit and Cost and Attainment Assessment System(ABaCAS).Results suggest that the regional emissions of NOx,SO_(2),NH3,VOCs(volatile organic compounds)and primary PM_(2.5)should be reduced by 18%,23%,14%,17%and 33%compared with 2017 to achieve 25%and 5% decreases of PM_(2.5)and O_(3)in 2025,and that the emission reduction ratios will need to be 50%,26%,28%,28% and 55%to attain the National Ambient Air Quality *** effectively reduce the O_(3) pollution in the central and eastern YRD,VOCs controls need to be strengthened to reduce O_(3)by 5%,and then NOx reduction should be accelerated for air quality ***,control of primary PM_(2.5)emissions shall be prioritized to address the severe PM_(2.5)pollution in the northern *** most cities in the YRD,the VOCs emission reduction ratio should be higher than that for NOx in Spring and *** control should be increased in summer rather than winter when a strong VOC-limited regime ***,regarding the emission control of industrial processes,on-road vehicle and residential sources shall be prioritized and the joint control area should be enlarged to include Shandong,Jiangxi and Hubei Province for effective O_(3)control.

关键词： PM_(2.5) O_(3) Response surface model Synergistic control pathway Cost-benefit analysis

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Hybrid energy harvesting systems for self-powered sustainable water purification by harnessing ambient energy

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Frontiers of environmental Science & Engineering 2023年第10期17卷 1-16页

作者： Zhengyang Huo Young Jun Kim Yuying Chen Tianyang Song Yang Yang Qingbin Yuan Sang Woo Kim School of Environment and Natural Resources Renmin University of ChinaBeijing 100872China School of Advanced Materials Science and Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Institute of Scientific and Technical Information of China Beijing 100038China

The development of self-powered water purification technologies for decentralized applications is crucial for ensuring the provision of drinking water in resource-limited regions. The elimination of the dependence on external energy inputs and the attainment of self-powered status significantly expands the applicability of the treatment system in real-world scenarios. Hybrid energy harvesters, which convert multiple ambient energies simultaneously, show the potential to drive self-powered water purification facilities under fluctuating actual conditions. Here, we propose recent advancements in hybrid energy systems that simultaneously harvest various ambient energies (e.g., photo irradiation, flow kinetic, thermal, and vibration) to drive water purification processes. The mechanisms of various energy harvesters and point-of-use water purification treatments are first outlined. Then we summarize the hybrid energy harvesters that can drive water purification treatment. These hybrid energy harvesters are based on the mechanisms of mechanical and photovoltaic, mechanical and thermal, and thermal and photovoltaic effects. This review provides a comprehensive understanding of the potential for advancing beyond the current state-of-the-art of hybrid energy harvester-driven water treatment processes. Future endeavors should focus on improving catalyst efficiency and developing sustainable hybrid energy harvesters to drive self-powered treatments under unstable conditions (e.g., fluctuating temperatures and humidity).

关键词： Piezocatalysis Solar energy Waste heat Decentralized water treatment Point-of-use Nanogenerator

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Effects of straw returning on photochemical process and imidacloprid degradation in paddy water through a field experiment

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Carbon Research 2024年第1期3卷 1-12页

作者： Li, Mabo Zeng, Yu Fu, Qinglong Zhang, Mingyang Chen, Ning Wang, Yujun Zhou, Dongmei Fang, Guodong State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing210008 China University of Chinese Academy of Sciences Beijing100049 China School of Environmental Studies China University of Geosciences Wuhan430074 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China

Straw returning is an important strategy for effectively using straw resources to improve soil fertility and quality, but the effects of this process on reactive intermediates (RIs) formation in paddy water are not fully explored. In this study, we conducted a field experiment to explore the effects of straw returning on RIs formation including triplet chromophoric dissolved organic matter (3CDOM*), hydroxyl radicals (•OH), and singlet oxygen (1O2) in paddy water. It was found that straw returning considerably increased the steady-state concentration of RIs, and the application of rice straw with 25% and 75% organic replacement ratio increased RIs concentration by 2.52 and 2.25 times, respectively. The optical spectroscopy, Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) analysis and structural equation model showed that straw returning produces abundant humified and aromatic DOM containing fulvic acid, lignin and protein-like substances, which could induce more RIs under irradiation. In addition, straw returning significantly accelerated imidacloprid (IMD) degradation, yielding degradation products that were highly toxic to aquatic animals (i.e., fish and daphnia) but less toxic to aquatic plants (i.e., green algae). This study would offer an innovative viewpoint on the effects of straw returning on the photochemistry of paddy water and the naturally occurring abiotic degradation pathway of organic contaminants. © The Author(s) 2024.

关键词： Aquatic organisms

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A MISR-Based Method for the Estimation of Particle Size Distribution:Comparison with AERONET over China

Journal of Remote Sensing

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Journal of Remote Sensing 2023年第1期3卷 97-109页

作者： Yanchuan Shao Riyang Liu Weihan Li Jun Bi Zongwei Ma State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjingJiangsuChina Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Nanjing University of Information Science&TechnologyNanjingJiangsuChina

Aerosol particle size has a crucial impact on the environment and public *** satellite-based regression models focus on the total amount of particles and are limited by surface *** study proposes an algorithm to derive the long-term normalized volume size distribution(VSD)of aerosol particles,which is independent of ground *** size distribution and aerosol optical depth of Multi-angle Imaging SpectroRadiometer(MISR)components are *** find the estimated MISR VSD is consistent with Aerosol Robotic Network(AERONET)observations,with R=0.56,0.54,0.59,and 0.68 for daily,monthly,seasonal,and annual *** stratified validations of radius,stations,and years further confirm the stable performance of derived VSD(R=0.28 to 0.73).The application of the random forest model demonstrates the potential improvements of predicted VSD by 10-fold cross-validation R=0.86 at the monthly *** apply MISR VSD to quantify the normalized volume of fractional aerosol particles at a resolution of 0.2°×0.2°during 2004 to 2016 in *** also calculate the proportion of small and medium particles to indicate the contribution of anthropogenic *** highest ratios are concentrated in the northeastern regions especially during winter while relatively lower in the Taklamakan Desert of western *** case study demonstrates that the application of MISR data can yield valuable and resolved size distributions of aerosol particles.

关键词： AERONET aerosol MISR

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Metal-free diatomaceous carbon-based catalyst for ultrafast and anti-interference Fenton-like oxidation

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Chinese Chemical Letters 2024年第12期35卷 351-355页

作者： Kexin Yin Jingren Yang Yanwei Li Qian Li Xing Xu Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and EngineeringShandong UniversityQingdao 266237China Environment Research Institute Shandong UniversityQingdao 266237China State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants Shanghai Academy of Environmental SciencesShanghai 200233China

Herein,a diatomite biomorphic Si-O doped carbon-based catalyst(DB-SiOC)was prepared using natura mineral diatomite as the silicon source and porous *** results showed that the metal-free DB SiOC catalyst exhibited ultrafast oxidation towards chlorophenol(CP)via peroxymonosulfate(PMS)activa tion,which was almost one order of magnitudes than most of carbon-based *** DB-SiOC/PMS system also showed the high ability to resist the interference of environmental *** radicals(^(·)OH and SO_(4)^(·–))exhibited a very small contribution to the CP oxidation while the electron transfer processe(ETP)played the major role in the DB-SiOC/PMS *** electron shuttles from the electron-donating CP molecules to the adjacent DB-SiOC/PMS^(*)could be efficiently triggered via Si-O bonds as bridges,mak ing it possible for ultrafast oxidation of *** addition,the hollow-disc shaped DB-Si OC provided the biomorphic DE structures with abundant pores for enriching the PMS and pollutants,thus further ac celerating the oxidation *** work provided a new routine for the fabrication of Si-O doped carbon-based catalysts with excellent Fenton-like catalytic activity,which would greatly promote thei application prospects in Fenton-like systems.

关键词： Peroxymonosulfate Diatomite Si-O doping Fenton-like reaction Electron transfer process(ETP)

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