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Interbasin groundwater flows in the Yarlung Zangbo River Basin and its surrounding areas:A perspective

science China(Technological sciences) 2025年第4期68卷 299-301页

作者： Jianxin CHEN Xingxing KUANG Linfeng FAN Chunmiao ZHENG Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen518000China State Key Laboratory of Mountain Hazards and Engineering Resilience Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu610000China

Interbasin groundwater flows(IGFs)are movements of groundwater across topographic basin boundaries,which can either contribute to or deplete the water resources of a basin[1].Basins that net-export groundwater beyond their topographic boundaries are termed groundwater exporters,whereas those that receive groundwater from beyond their topographic confines are known as groundwater *** studies have highlighted that the Yarlung Zangbo River Basin(YZRB)is under the impact of IGFs[2,3].

关键词： interbasin groundwater flows interbasin groundwater flows igfs groundwater importers water resources movements groundwater groundwater exporters Yarlung Zangbo River Basin

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Carbon-based interface engineering and architecture design for high-performance lithium metal anodes

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Carbon Energy 2024年第1期6卷 207-235页

作者： Na Zhu Yuxiang Yang Yu Li Ying Bai Junfeng Rong Chuan Wu SINOPEC Research Institute of Petroleum Processing Co. Ltd.BeijingChina Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijingChina Yangtze Delta Region Academy of Beijing Institute of Technology JiaxingChina

Metallic lithium(Li)is considered the“Holy Grail”anode material for the nextgeneration of Li batteries with high energy density owing to the extraordinary theoretical specific capacity and the lowest negative electrochemical ***,owing to inhomogeneous Li-ion flux,Li anodes undergo uncontrollable Li deposition,leading to limited power output and practical *** materials and their composites with controllable structures and properties have received extensive attention to guide the homogeneous growth of Li to achieve high-performance Li *** this review,the correlation between the behavior of Li anode and the properties of carbon materials is ***,we review emerging strategies for rationally designing high-performance Li anodes with carbon materials,including interface engineering(stabilizing solid electrolyte interphase layer and other functionalized interfacial layer)and architecture design of host carbon(constructing three-dimension structure,preparing hollow structure,introducing lithiophilic sites,optimizing geometric effects,and compositing with Li).Based on the insights,some prospects on critical challenges and possible future research directions in this field are *** is anticipated that further innovative works on the fundamental chemistry and theoretical research of Li anodes are needed.

关键词： carbon materials dendrites hosts interfacial layers Li metal anodes

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Understanding of Spinel Phases in Lithium-Rich Cathode for High-Energy-Density Lithium-Ion Batteries:A Review

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Energy Material Advances 2024年第1期5卷 212-235页

作者： Youyou Fang Jiayu Zhao Yuefeng Su Jinyang Dong Yun Lu Ning Li Haoyu Wang Feng Wu Lai Chen School of Materials Science and Engineering Beijing Key Laboratory of Environmental Science and EngineeringBeijing Institute of TechnologyBeijing 100081P.R.China Chongqing Innovation Center Beijing Institute of TechnologyChongqing 401120P.R.China

Layered Li-rich oxides have attracted much attention because of higher capacity than that of traditional layered oxides(more than 250 mAh g^(−1)).However,the intrinsic issues of Li-rich cathode materials suffer from lattice oxygen loss,poor rate capability,voltage fade,and limited cycle *** tackle these problems,the Li-rich cathode containing intergrown layer and spinel phases was proposed,and this heterostructure material meets the requirements of high energy and stable surface with a fast Li^(+)diffusion ***,we review the recent progress and in-depth understanding about heterostructure including microstructure and morphology,performance of advancement and degradation mechanisms,and modification *** attention is given to the high-performance energy mechanism as follows:(a)spinel phase and oxygen vacancy jointly enhance the lattice structure and prevent the irreversible oxygen release,(b)higher capacity is achieved by promotion of activation of Li_(2)MnO_(3) phase and control of the activation rate to realize stable long-term cyclability,and(c)spinel phase provides the 3D interconnected Li^(+)diffusion channels and protects the surface region from side *** other issue that aroused interest is the undesirable changes of phase transition and degradation mechanisms as follows:(a)the key reconstruction process is to produce a“good”spinel to maintain the surface and interior structure stability.(b)It is significant to figure out the structure degradation and phase transition mechanism in the cycled *** review aims to provide inspiration and opportunities for the design of high-energy-density cathode materials,thereby bridging the gap between laboratory research and practical battery applications.

关键词： lattice oxygen losspoor spinel phases heterostructure material high energy density lithium ion batteries layered oxides more high energy stable surface microstructure lithium rich cathode

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Efficient extraction of phenol from wastewater by ionic micro-emulsion method:Anionic and cationic

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Chinese Journal of Chemical engineering 2023年第6期58卷 137-145页

作者： Chaobo Zhang Xiaoyong Yang Jian Dai Wenxia Liu Hang Yang Zhishan Bai State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237China

Phenolic wastewater is one of the priorities in the field of wastewater treatment,which poses a serious threat to the human health and nature *** this paper,cationic cetyltrimethylammonium bromide(CTAB)and anionic sodium oleate(Na OL)microemulsions were utilized to extract phenol from the *** optimal extraction factors were investigated by exploring the effects of microemulsion composition ratio and extraction conditions on the phenol extraction ***,the enhanced extraction mechanism of phenol by cations microemulsions is illustrated by studying the extraction process of cationic and anionic microemulsions in the extraction of *** optimum components were obtained:surfactant concentration of 0.2 mol·L^(-1),isoamyl alcohol volume of 30%,internal aqueous phase concentration of CTAB microemulsion of 0.05 mol·L^(-1),and internal aqueous phase concentration of Na OL microemulsion of 0.09 mol·L^(-1).The extraction efficiencies were 96.44%and 82.0%when using CTAB and Na OL microemulsions under optimal conditions(water-emulsion ratio of 5,contact time of 9 min,extraction temperature of 298.15 K,and p H of 9),confirming the enhanced extraction of phenol by CTAB cationic *** was analyzed that the enhanced extraction of CTAB microemulsion was due to the electrostatic adsorption of cations with phenol root ions.

关键词： Phenol-containing wastewater Phenol recovery Microemulsion extraction Ionic microemulsion Mechanism analysis

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Building Better Batteries:Solid-State Batteries with Li-Rich Oxide Cathodes

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Energy Material Advances 2023年第1期4卷 402-425页

作者： Lifeng Xu Shi Chen Yuefeng Su Jizhuang He Lian Wang Xing Shen Lai Chen Duanyun Cao Yun Lu Meng Wang Liying Bao Ning Li Feng Wu Beijing Key Laboratory of Environmental Science and Engineering School of Material Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China

High-capacity Li-rich oxide materials have received extensive attention due to their unique anion-cation charge compensation ***,the high operating voltage,poor cycling performance,unsafe oxygen evolution,and voltage decay limit their industrial *** emergence and development of solid-state batteries offer a great opportunity to solve these issues by replacing flammable and unstable liquid electrolytes with solid ***,utilization of high-capacity Li-rich oxide cathodes enables to establish high-energy-density solid-state batteries with wide voltage ranges,light weight,and high mechanical *** review summarizes the recent progress of Li-rich oxide materials and solid electrolytes,emphasizing their major advantages,interface challenges,and modification approaches in the development of Li-rich solid-state *** also propose possible characterization strategies for effective interfacial observation and *** is hoped that this review should inspire the rational design and development of better solid-state batteries for application in portable devices,electric vehicles,as well as power grids.

关键词： Solid rational cycling

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Estimation of unfrozen water content of saturated sandstones using nuclear magnetic resonance, mercury intrusion porosimetry, and ultrasonic tests

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Journal of Rock Mechanics and Geotechnical engineering 2024年第9期16卷 3465-3484页

作者： Fei Liu Shibing Huang Gang Liu Shilin Yu School of Resources and Environmental Engineering Wuhan University of Science and TechnologyWuhan430081China Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources Wuhan University of Science and TechnologyWuhan430081China

The unfrozenwater content(UWC)is a crucial parameter that affects the strength and thermal properties of rocks in relation to engineering construction and geological disasters in cold *** this study,three different methods were employed to test and estimate the UWC of saturated sandstones,including nuclear magnetic resonance(NMR),mercury intrusion porosimetry(MIP),and ultrasonic *** NMR method enabled the direct measurement of the UWC of sandstones using the free induction decay(FID).The MIP method was used to analyze the pore structures of sandstones,with the UWC subsequently calculated based on pore ice ***,the MIP test constituted an indirect measurement ***,a correlation was established between the P-wave velocity and the UWC of these sandstones based on the mixture theory,which could be employed to estimate the UWC as an empirical *** methods demonstrated that the UWC initially exhibited a rapid decrease from 0C to5C and then generally became constant beyond20***,these test methods had different *** NMR method was used to directly and accurately calculate the UWC in the ***,the cost and complexity of NMR equipment have precluded its use in the *** UWC can be effectively estimated by the MIP test,but the estimation accuracy is influenced by the ice crystallization process and the pore size *** P-wave velocity has been demonstrated to be a straightforward and practical empirical parameter and was utilized to estimate the UWC based on the mixture *** method may be more suitable in the *** methods confirmed the existence of a hysteresis phenomenon in the freezing-thawing *** average hysteresis coefficient was approximately 0.538,thus validating the GibbseThomson *** study not only presents alternative methodologies for estimating the UWC of saturated sandstones but also contribute to our understanding of the freezin

关键词： Unfrozen water content(UWC) Nuclear magnetic resonance(NMR) Mercury intrusion porosimetry(MIP) Pore structures P-wave velocity Sandstone

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Nano silica aerogel-induced formation of an organic/alloy biphasic interfacial layer enables construction of stable high-energy lithium metal batteries

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Green Energy & Environment 2023年第4期8卷 1071-1080页

作者： Chengwei Ma Xinyu Zhang Chengcai Liu Yuanxing Zhang Yuanshen Wang Ling Liu Zhikun Zhao Borong Wu Daobin Mu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing100081China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing100081China

Lithium metal batteries represent promising candidates for high-energy-density batteries, however, many challenges must still be overcome,e.g., interface instability and dendrite growth. In this work, nano silica aerogel was employed to generate a hybrid film with high lithium ion conductivity(0.6 mS cm^(-1)at room temperature) via an in situ crosslinking reaction. TOF-SIMS profile analysis has revealed conversion mechanism of hybrid film to Li–Si alloy/Li F biphasic interface layer, suggesting that the Li–Si alloy and Li F-rich interface layer promoted rapid Li+transport and shielded the Li anodes from corrosive reactions with electrolyte-derived products. When coupled with nickel-cobalt-manganese-based cathodes, the batteries achieve outstanding capacity retention over 1000 cycles at 1 C. Additionally the developed film coated on Li enabled high coulombic efficiency(99.5%) after long-term cycling when coupled with S cathodes. Overall, the results presented herein confirm an effective strategy for the development of high-energy batteries.

关键词： Lithium metal batteries Nano silica aerogel In situ crosslinking Biphasic interface layer Li–Si alloy

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Insights into the mechanism of the deterioration of mainstream partial nitritation/anammox under low residual ammonium

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Journal of environmental sciences 2023年第4期126卷 29-39页

作者： Yandong Yang Yiming Jiang Yanan Long Jiarui Xu Changqing Liu Liang Zhang Yongzhen Peng School of Environmental and Municipal Engineering Qingdao University of TechnologyQingdao 266033China National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery EngineeringBeijing University of TechnologyBeijing 100124China

Residual ammonium is a critical parameter affecting the stability of mainstream partial nitritation/anammox(PN/A), but the underlying mechanism remains unclear. In this study,mainstream PN/A was established and operated with progressively decreasing residual ammonium. PN/A deteriorated as the residual ammonium decreased to below 5 mg/L, and this was paralleled by a significant loss in anammox activity in situ and an increasing nitrite oxidation rate. Further analysis revealed that the low-ammonium condition directly decreased anammox activity in situ via two distinct mechanisms. First, anammox bacteria were located in the inner layer of the granular sludge, and thus were disadvantageous when competing for ammonium with ammonium-oxidizing bacteria(AOB) in the outer layer. Second, the complete ammonia oxidizer(comammox) was enriched at low residual ammonium concentrations because of its high ammonium affinity. Both AOB and comammox presented kinetic advantages over anammox bacteria. At high residual ammonium concentrations,nitrite-oxidizing bacteria(NOB) were effectively suppressed, even when their maximum activity was high due to competition for nitrite with anammox bacteria. At low residual ammonium concentrations, the decrease in anammox activity in situ led to an increase in nitrite availability for nitrite oxidation, facilitating the activation of NOB despite the dissolved oxygen limitation(0.15–0.35 mg/L) for NOB persisting throughout the operation. Therefore, the deterioration of mainstream PN/A at low residual ammonium was primarily triggered by a decline in anammox activity in situ. This study provides novel insights into the optimized design of mainstream PN/As in engineering applications.

关键词： Mainstream partial nitritation/anammox Residual ammonium Granular sludge Comammox

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Fault Diagnosis based on Behavior and State-Awareness Digital Twin of Key Equipment in Power Supply System

Fault Diagnosis based on Behavior and State-Awareness Digita...

引用

2023 CAA Symposium on Fault Detection, Supervision and Safety for Technical Processes, SAFEPROCESS 2023

作者： Liu, Haifei Zhao, Qin Hao, Jie Tao, Laifa Lu, Chen Beihang University Institute of Reliability Engineering Beijing China Science & Technology on Reliability & Environmental Engineering Laboratory Beijing China Beihang University School of Reliability and Systems Engineering Beijing China AVIC xi'An Flight Automatic Control Research Institute Xi'an China

ISBN: (纸本)9798350337754

With the rapid development of multi-electric and all-electric aircraft, the role of power supply systems in aircraft is becoming increasingly prominent. Traditional fault diagnosis methods have problems such as a single means of sensory modelling and unbalanced fault data. The rapid development of digital twin technology provides an opportunity to overcome these difficulties. However, how to achieve adaptive updating and how to improve the data-and-model-fusion capabilities are also urgent challenges to be solved. To address the lack of existing research, this paper combines time-frequency domain analysis, physical information neural network based on differential-algebraic equation (DAE-PINN) and transient stability analysis of the power supply system based on a digital twin model with dimensions including fault-behavior-twin and (FBT) fault-state-awareness-twin (FSAT). Ultimately, this paper achieves effective digital twin modelling, fault eigenfeature extraction and high accuracy fault diagnosis, reaching fault data balance and complete state characterization and adaptive update of the diagnostic model. © 2023 IEEE.

关键词： Failure analysis

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A critical review on thermodynamic mechanisms of membrane fouling in membrane-based water treatment process

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Frontiers of environmental science & engineering 2023年第10期17卷 147-169页

作者： Jiaheng Teng Ying Deng Xiaoni Zhou Wenfa Yang Zhengyi Huang Hanmin Zhang Meijia Zhang Hongjun Lin Key Laboratory of Watershed Earth Surface Processes and Ecological Security College of Geography and Environmental SciencesZhejiang Normal UniversityJinhua 321004China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

Membrane technology is widely regarded as one of the most promising technologies for wastewater treatment and reclamation in the 21st century. However, membrane fouling significantly limits its applicability and productivity. In recent decades, research on the membrane fouling has been one of the hottest spots in the field of membrane technology. In particular, recent advances in thermodynamics have substantially widened people’s perspectives on the intrinsic mechanisms of membrane fouling. Formulation of fouling mitigation strategies and fabrication of anti-fouling membranes have both benefited substantially from those studies. In the present review, a summary of the recent results on the thermodynamic mechanisms associated with the critical adhesion and filtration processes during membrane fouling is provided. Firstly, the importance of thermodynamics in membrane fouling is comprehensively assessed. Secondly, the quantitative methods and general factors involved in thermodynamic fouling mechanisms are critically reviewed. Based on the aforementioned information, a brief discussion is presented on the potential applications of thermodynamic fouling mechanisms for membrane fouling control. Finally, prospects for further research on thermodynamic mechanisms underlying membrane fouling are presented. Overall, the present review offers comprehensive and in-depth information on the thermodynamic mechanisms associated with complex fouling behaviors, which will further facilitate research and development in membrane technology.

关键词： Membrane fouling Thermodynamic mechanism XDLVO theory Flory-Huggins theory Fouling migration

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