检索结果-内蒙古大学图书馆

control locations confuse evaluation of passivation effects of iron-based biochar and selenium applications on wheat grain cadmium accumulation in a Cd-contaminated weakly alkaline soil

学校读者我要写书评

暂无评论

Pedosphere 2025年第3期35卷 549-559页

作者： JING, Feng GAO, Yan LI, Hongbo FAN, Guangping ZHANG, Qingya GAO, Xuezhen ZHOU, Dongmei State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing 210023 China Institute of Agricultural Resources and Environment Jiangsu Academy of Agricultural Sciences Nanjing 210014 China Jiangsu DDBS Environmental Remediation Co. Ltd. Nanjing 210012 China

Inhibiting cadmium (Cd) accumulation in wheat grains could reduce the risk of human exposure to Cd. This study conducted a field experiment and evaluated the effects of iron (Fe)-based biochar and selenium (Se) applications alone or in combination on Cd accumulation in wheat grains in a Cd-contaminated weakly alkaline soil of rice-wheat rotation farmland. Considering soil Cd heterogeneity in the field, we set up 22 replicates of control (CK) and three replicates of each Fe-based biochar and/or Se treatment. Results clearly showed that the CK locations could greatly affect the evaluation of whether the difference in the wheat grain Cd concentration between treatments and CK was significant. There was an insignificant difference in the wheat grain Cd concentration between the treatment and the adjacent CK replicates. Although soil Se application at 2 mg kg⁻¹ and foliar Se application at 4 mg L⁻¹ significantly increased the grain Se concentration as compared with the adjacent CK replicates, they still could not reduce the Cd concentration in wheat grains. However, when compared to the CK replicates that had the highest grain Cd concentration, foliar and soil applications of Se could significantly reduce the wheat grain Cd concentration by 47.7% and 41.3%–46.1%, respectively. No matter which CK replicates were selected, the application of Fe-based biochar had no significant impact on Cd accumulation in wheat grains, and there was no significant difference in diethylenetriaminepentaacetic acid-Cd concentration between the Fe-based biochar treatment and adjacent CK replicates. In conclusion, applying Fe-based biochar and Se in the field could not reduce the Cd accumulation in wheat grains in Cd-contaminated weakly alkaline soils. © 2025 Soil Science Society of China

关键词： field experiment foliar Se application Se accumulation soil Cd heterogeneity toxic metal wheat Cd

Harnessing conductive materials for sustainable food waste treatment: Comparative evaluation of biochar and magnetite in volatile fatty acid production

学校读者我要写书评

暂无评论

Journal of Environmental Management 2025年 387卷 125887页

作者： Zheng, Xiong Zhao, Zhengzheng Zhu, Zizeng Wu, Yang Long, Min Chen, Yinguang State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and Engineering Tongji University Shanghai200092 China Key Laboratory of Yangtze River Water Environment School of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China Shanghai Key Laboratory of Urban Renewal and Spatial Optimization Technology Shanghai200092 China

Anaerobic fermentation offers a sustainable and eco-friendly approach to converting food waste (FW) into high-value volatile fatty acids (VFAs). Although both carbon- and metal-based conductive materials can enhance VFAs yields during FW fermentation, a comprehensive comparison of these materials and their underlying mechanisms remains unexplored, limiting their practical selection and application. This study systematically investigated the differences between biochar and magnetite, which are representative carbon- and metal-based conductive materials, in promoting VFAs production during FW fermentation. The results indicated that VFAs yields increased by 106 % and 81.2 % in the presence of biochar and magnetite, respectively, compared to the control, with notable enhancements during critical fermentation stages, including solubilization, hydrolysis, and acidification. Microbial analysis demonstrated that biochar more effectively enriched electroactive bacteria with acid-forming functions (e.g., Clostridium was enriched 1.3-fold more than in the control) compared to magnetite. Additionally, biochar more efficiently upregulated metabolic pathways associated with VFAs biosynthesis, including pyruvate metabolism (e.g., aceE and pckA), acetate production (e.g., pta and acyP), and butyrate production (e.g., ptb and bok). Biochar also enhanced microbial adaptability to external environmental conditions through quorum sensing (e.g., luxS and lsrA) and two-component systems (e.g., phoA and atoA). The enhanced TCA cycle, which provides electrons and energy for VFAs production and environmental adaptability, was more pronounced with biochar, ultimately leading to increased overall VFAs production. This work provides a deeper understanding about the impact of conductive materials on anaerobic fermentation and offers valuable direction for optimizing FW treatment. © 2025 Elsevier Ltd

关键词： Volatile fatty acids

Insights into the Role of Vocs Properties on Desorption Behaviors of Two Porous Polymeric Resins

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Liu, Huijuan Yu, Yansong Yang, Zemin Liu, Zhimin Long, Chao School of Eco-Environment Hebei University Baoding071002 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China

Desorption is a critical process in the recovery or post-treatment of adsorbents saturated with volatile organic compounds (VOCs). In this study, the thermal desorption behaviors for eight VOCs on hypercrosslinked polymeric resin (HPR) and macroporous polymeric resin (MPR) were investigated through isothermal desorption and temperature programmed desorption (TPD). Compared with MPR, HPR with more micropores exhibited a lower desorption rate constant, lower desorption efficiency and higher desorption activation energy due to the strong binding energy generated between VOCs molecules and narrow micropores. As the polarizability of VOCs increased, the desorption rate constants on two porous polymeric resins decreased, while the desorption activation energy showed an incremental trend. Excellent linear correlations were observed between VOC polarizability and desorption rate constants (R2=0.957 for HPR and R2=0.940 for MPR) as well as between VOC polarizability and desorption activation energy (R2=0.981 for HPR and R2=0.969 for MPR). Furthermore, a polyparameter linear free energy relationship (PP-LFER) was developed to explore the influences of intermolecular interactions on desorption behaviors of VOCs on porous polymeric resins. The results indicated that the dispersive interaction, which is directly related to polarizability of VOCs, was the primary factor influencing the desorption activation energy of VOCs on porous polymeric resins. The find from this study helps evaluate fleetly and availably the desorption properties of VOCs based on their polarizability. © 2023, The Authors. All rights reserved.

关键词： Volatile organic compounds

Displacement Efficiency of Intermittent Renewable Energy Generation in China

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Zhu, Ziao Xu, Zhongwen Zhang, Bing State Key Laboratory of Pollution Control & Resource Reuse School of Environment Nanjing University 163 Xianlin Avenue Nanjing210023 China Center for Environmental Management and Policy China

As the world’s largest carbon emitter, China has made significant investments in wind and solar power. However, the extent to which these intermittent renewable energy sources can replace the predominant thermal generation remains uncertain. This study examines the displacement of fossil-fuel-generated electricity by intermittent energy sources in China from 2011 to 2020. The results indicate that a 1% increase in intermittent renewable generation leads to a decrease of approximately 0.03% in thermal generation. A rough estimate suggests that a 1% rise in renewable generation results in carbon emission reduction benefits of about 645 million USD. The impact of wind and solar generation on the operation of thermal units varies due to disparities in penetration rates and supply patterns. Evidence underscores the absence of co-benefits from the ultra-high voltage transmission network in improving the displacement efficiency of intermittent renewable energy, primarily attributed to the relatively modest proportion of renewable energy electricity transmitted through UHV lines. These findings highlight the need for tailored investment plans based on the characteristics of wind and solar resources, the importance of alternative measures to enhance grid flexibility, and the imperative of integrating a diverse range of policy instruments to effectively facilitate the penetration rate of intermittent renewable energy sources. © 2023, The Authors. All rights reserved.

关键词： Fossil fuels

Insights into the Role of Vocs Properties on Desorption Behaviors of Two Porous Polymeric Resins

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Liu, Huijuan Yu, Yansong Long, Chao School of Eco-Environment Hebei University Baoding071002 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China

关键词： Volatile organic compounds

Climate Downscaling Using Neural Operator: Spatiotemporal Multimodal Fusion Operator with state-Query Coupled Kernel

学校读者我要写书评

暂无评论

Climate Downscaling Using Neural Operator: Spatiotemporal Mu...

International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Haodi Zhang Yichi Wang Yifan Jian Jiahui Jiang Zhaohai Bai Lin Ma College of Computer Science and Software Engineering Shenzhen University Center for Agricultural Resources Research Institute of Genetic and Developmental Biology Chinese Academy of Sciences State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University

ISBN: (数字)9798350368741

ISBN: (纸本)9798350368758

Climate downscaling is crucial for detailed small- scale analysis and for acquiring climate data in regions without weather stations. Operator learning has proven potential for this task. However, several challenges remain in operator learning, such as multimodal fusion, spatiotemporal fusion and input state and query adaptation. To address these challenges, we propose a Spatiotemporal Multimodal Fusion Operator with a state- Query Coupled Kernel (SMCK). This framework includes a latent space fusion encoder that encodes climate variables using position-wise multihead attention for multimodal fusion and integrates historical information to generate robust and precise representation. Additionally, we introduce a state-query coupled kernel that combines radial basis functions and discrete fourier encoding to enhance query location representation, while also adapting to the state to obtain the coupled kernel. Extensive experiments demonstrate that our method achieves state-of-the-art performance and provides strong support for climate downscaling and the planning of climate-related strategies.

关键词： Couplings Signal processing Encoding Robustness Spatiotemporal phenomena Planning Kernel Speech processing Forecasting Meteorology

Sulfation Strategy for Ceo2 in Chlorobenzene Catalytic Combustion: Sulfate Species and Anti-Chloride Poisoning Mechanism

学校读者我要写书评

暂无评论

SSRN 2024年

作者： Zhang, Lei Fang, Siyong Zhou, Linsen Yu, Fang Xiong, Shiqi Huang, Yangyang Zou, Weixin Dong, Lin Key Laboratory of Water Environment Evolution and Pollution Control in the Three Gorges Reservoir School of Environmental and Chemical Engineering Chongqing Three Gorges University Chongqing404000 China Institute of Materials China Academy of Engineering Physics Sichuan Mianyang621908 China State Key Laboratory of Pollution Control and Resource Reuse School of Environment Jiangsu Key Laboratory of Vehicle Emissions Control Nanjing University Nanjing210023 China

Chloride (Cl) poisoning is a challenge for the practical application of CeO2-based catalysts in the catalytic combustion of chlorinated volatile organic compounds. In this work, the CeO2 catalysts through the sulfation strategy exhibit improved resistance to Cl poisoning in the chlorobenzene (CB) catalytic combustion. Comprehensive characterizations and theoretical calculations reveal the anti-chloride poisoning mechanism and the synergistic effects of the naked CeO2 and surface sulfate are the key. The sulfation processes generate the surface and bulk-like sulfates over CeO2, and the different influences of surface and bulk-like sulfate on the catalytic activity and resistance to Cl poisoning are identified, i.e., the surface sulfate effectively prevents Cl poisoning on the naked CeO2, while the bulk-like sulfate severely inhibits the redox and O2 activation ability, leading to the decreased catalytic activity of sulfated CeO2. The work provides a simple and effective strategy for the resistance to Cl poisoning on CeO2-based catalysts. © 2024, The Authors. All rights reserved.

关键词： Cerium oxide

Insights into the synergistic toxicity mechanisms caused by nano- and microplastics with triclosan using a dose-dependent functional genomics approach in Saccharomyces cerevisiae

学校读者我要写书评

暂无评论

Chemosphere 2024年 362卷 142629页

作者： Zong, Linhao Wang, Xiaoyang Huo, Miaomiao Yi, Fangying Huang, Shan Ling, Tianqi Fang, Yumo Ma, Fei Zhang, Xiaowei Guan, Miao Jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life Sciences Nanjing Normal University 1 Wenyuan Rd. Jiangsu Nanjing210023 China State Key Laboratory of Pollution Control & Resource Reuse School of the Environment Nanjing University 163 Xianlin Ave. Jiangsu Nanjing210023 China

The emergence of polystyrene (PS) nano- and microplastics (NMPs) and triclosan (TCS) as environmental contaminants has raised concerns about their combined toxicities to organisms, but the complex toxicity arising from their interactions and the underlying molecular mechanisms remain obscure to us. In this study, we comprehensively detected the combined toxicity of PS-NMPs and TCS via the dose-dependent yeast functional genomics profiling. Firstly, our findings demonstrated that the combined exposure to PS-NMPs and TCS elicited a synergistic toxic effect in which the toxicity depended on the size of the PS-NMPs. Secondly, we found that TCS exposure, either alone or in combination with PS-NMPs, influenced lipid biosynthetic processes and ATP export pathways, while the unique responsive genes triggered by combined exposure to TCS and PS-NMPs are significantly enriched in mitochondrial translation, ribosomal small subunit assembly, and tRNA wobble uridine modification. Thirdly, our results demonstrated that point of departure (POD) at the pathway level was positively correlated with IC50, and POD was a more sensitive predictor of toxicity than the apical toxicity endpoints. More importantly, our findings suggested that the combined exposure of PS-NMPs in a size-dependent manner not only alleviated the harmful effects of TCS on glycerophospholipid metabolism, but also exacerbated its negative impact on oxidative phosphorylation. Collectively, our study not only provides new insights into the intricate molecular mechanisms that control the combined toxicity of PS-NMPs and TCS, but also confirms the effectiveness of the dose-dependent functional genomics approach in elucidating the molecular mechanisms of the combined toxicity of pollutants. © 2024 Elsevier Ltd

关键词： Yeast

Review:Progress in Core-shell Rubber Particles for Efficiently Toughening Resins

学校读者我要写书评

暂无评论

Journal of Harbin Institute of Technology(New Series) 2022年第6期29卷 34-63页

作者： Xin-Gui Li Xiong Wang Mei-Rong Huang Yue-Shan He Fei Liu Wei-Hong Xu State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education College of Materials Science and EngineeringTongji UniversityShanghai 200092China Shenzhen Newfilms New Materials Technology Co. LtdShenzhen 518106GuangdongChina

Core-shell toughening particles are structured composite particles consisting of generally two different components, one at the center as a rubbery elastic core and surrounding by the second as a glassy inelastic shell. The design, preparation, and application of core-shell polymer particles have been briefly reviewed. Morphological characteristics of the core-shell particles by transmission electron microscopy(TEM) and scanning electron microscopy(SEM) are focused. The vital factors that are useful to control core-shell morphology and toughening properties including core-shell monomer species, polymerization conditions, cross-linking reagents, synthetic method, and post-processing techniques are analyzed. Distinguished properties are mainly considered as the most desirable features that endow core-shell polymer particles with various applicabilities, particularly as effectively toughening components in brittle epoxy resin and polylactide that are substrate of copper clad laminate widely used in the modern electronic world and environmentally friendly materials that are useful as packaging films, disposable tableware, biomedical equipment, and new energy vehicles.

关键词： core-shell particle rubbery core glassy shell brittle resin toughening epoxy resin electronic material