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Sulfide-driven nitrous oxide recovery during the mixotrophic denitrification process

Journal of environmental sciences 2023年第3期125卷 443-452页

作者： Cong Yu Sen Qiao Jiti Zhou Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education China)School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

We propose a novel sulfide-driven process to recover N_(2)O during the traditional denitrification *** optimum initial sulfide concentration was 120 mg/L,and the N_(2)O percentage in the gaseous products (N_(2)O+N_(2)) was up to 82.9%.Moreover,sulfide involved in denitrification processes could substitute for organic carbon as an electron donor,e.g.,1g sulfide was equivalent to 0.5-2 g COD when sulfide was oxidized to sulfur and *** accumulation of N_(2)O was mainly due to the inhibiting effect of sulfide on nitrous oxide reductase (N_(2)OR),which was induced by the supply insufficiency of electrons from cytochrome c (cyt c) to N_(2)*** the initial sulfide concentration was 120 mg/L,the N_(2)OR activity was only 36.8%of its original *** to the results of cyclic voltammetry,circular dichroism spectra and fluorescence spectra,significant changes in the conformations and protein structures of cyt c were caused by sulfide,and cyt c completely lost its electron transport *** study provides a new concept for N_(2)O recovery driven by sulfide in the denitrification *** addition,the findings regarding the mechanism of the inhibition of N_(2)OR activity have important implications both for reducing emissions of N_(2)O and recovering N_(2)O in the sulfide-driven denitrification process.

关键词： N_(2)O recovery N_(2)OR inhibition Cytochrome c Electron transfer capacity

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Next generation desalination membrane with exceptional chlorine resistance

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science China Chemistry 2024年第11期67卷 3500-3502页

作者： Shihong Lin Xinglin Lu Department of Civil and Environmental Engineering Vanderbilt UniversityNashville TN 37235USA CAS Key Laboratory of Urban Pollutant Conversion Department of Environmental Science and EngineeringNational Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefei 230026China

This highlight draws inspiration from a recent publication in science where Zhang and co-workers [1] from Nanjing University of science and technology reported a novel multifunctional polyester reverse osmosis(RO) membrane and its application in seawater desalination. This research represents a notable advancement in the field, as polyester membranes may potentially compete with state-of-the-art polyamide RO membranes in the mainstream market.

关键词： polyester exceptional chlorine

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Ionic-electronic dual-conductor interface engineering and architecture design in layered lithium-rich manganese-based oxides

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Carbon Energy 2025年第2期7卷 24-40页

作者： Youyou Fang Yuefeng Su Jinyang Dong Jiayu Zhao Haoyu Wang Ning Li Yun Lu Yujia Wu Wenbo Li Ni Yang Xiaojuan Wu Feng Wu Lai Chen Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijingChina Chongqing Innovation Center Beijing Institute of TechnologyChongqingChina Initial Energy Science&Technology(Xiamen)Co. LtdXiamenChina

The burgeoning growth in electric vehicles and portable energy storage systems necessitates advances in the energy density and cost-effectiveness of lithium-ion batteries(LIBs),areas where lithium-rich manganese-based oxide(LLO)materials naturally stand *** their inherent advantages,these materials encounter significant practical hurdles,including low initial Coulombic efficiency(ICE),diminished cycle/rate performance,and voltage fading during cycling,hindering their widespread *** response,we introduce an ionic-electronic dual-conductive(IEDC)surface control strategy that integrates an electronically conductive graphene framework with an ionically conductive heteroepitaxial spinel Li_(4)Mn_(5)O_(12)*** electrochemical and structural analyses demonstrate that this IEDC heterostructure effectively minimizes polarization,mitigates structural distortion,and enhances electronic/ionic *** functional theory calculations highlight an extensive Li^(+)percolation network and lower Li^(+)migration energies at the layered-spinel *** designed LLO cathode with IEDC interface engineering(LMOSG)exhibits improved ICE(82.9%at 0.1 C),elevated initial discharge capacity(296.7 mAh g^(-1)at 0.1 C),exceptional rate capability(176.5 mAh g^(-1)at 5 C),and outstanding cycle stability(73.7%retention at 5 C after 500 cycles).These findings and the novel dual-conductive surface architecture design offer promising directions for advancing highperformance electrode materials.

关键词： architecture design high-rate cyclability ionic-electronic dual-conductor layered lithiumrich manganese-based oxides lithium-ion battery

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Capacity and Time reliability Evaluation for Time-Varying Networks 24

Capacity and Time Reliability Evaluation for Time-Varying Ne...

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24th IEEE International Conference on Software Quality, reliability and Security Companion, QRS-C 2024

作者： Gao, Ying Li, Ruiying Kang, Rui School of Reliability and Systems Engineering Beihang University Beijing China Science and Technology on Reliability and Environmental Engineering Laboratory Beijing China Zhongfa Aviation Institute of Beihang University Zhejiang Hangzhou China

ISBN: (纸本)9798350365658

Facing the challenges caused by Time-Varying Networks (TVNs), this paper proposes a capacity and time reliability evaluation method. The Time Aggregated Graph (TAG) and line graph are combined for modeling TVNs. Additionally, modeling steps of the existing line graph model is simplified to accelerate its generation. Then, the capacity and time reliability evaluation method is proposed through finding the minimal path sets considering both capacity demand and time requirements associated with timestamps (TS-d-t-MPs) of the TVN in multiple Monte Carlo iterations. A park road network is used as a case to demonstrate its solution procedure in evaluating the capacity and time reliability of TVN s. © 2024 IEEE.

关键词： capacity reliability reliability evaluation time reliability time-varying network

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Characterization of the interfacial structure and fracture behavior of in situ synthesized ceramics to reinforce Ni-based composite coatings

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材料科学技术（英文版） 2025年第5期208卷 11-25页

作者： Yuxin Wang Yanchun Dong Yun Tian Jianing Liu Dongyao Zhang Chunli Qiu Yanqi Zhao Yong Yang School of Materials Science and Engineering Hebei University of TechnologyTianjin 300132China Key Lab.for New Type of Functional Materials in Hebei Province School of Materials Science and EngineeringState Key Laboratory of Reliability and Intelligence of Electrical EquipmentHebei University of TechnologyTianjin 300132China

This work used the in-situ synthesis of molten-state nitride ceramic phase-reinforced Ni-based alloy coat-ings,aiming to improve the phase-interface bonding through the interdependent co-solidification be-tween molten *** XRD was used to analyze the physical phases of the composite *** microstructure and phase-interface structure were characterized in detail by combining SEM,TEM,HRTEM,FFT,and SAED *** tester and microforce microhardness tester were em-ployed to measure the surface hardness and elastic modulus of the composite *** fracture be-havior of the composite coatings was characterized by observing the fracture morphology of the coatings using SEM combined with the EDS *** was found that the formation mechanisms of inter-facial misfit dislocation assistance,lattice distortion,aggregation of stacking faults,and specific growth orientation between the y-Ni matrix phase and each ceramic phase in NiCrBSi-TiCrN composite coat-ings improved the lattice matching between the two-phase interface,which resulted in the formation of atomically corresponding coherent lattice relations and stepped interfacial semi-coherent lattice relations,and enhanced the degree of phase-interface *** this basis,the composite coatings with high Cr content further inhibited the expansion of interphase penetration cracks due to the existence of Cr-rich zones at the phase interface,thus exhibiting high fracture *** work provides new opinions on the improvement of phase-interface bonding and composition design of Ni-based composite coatings.

关键词： In situ synthesis NiCrBSi-TiCrN composite coating Phase interface Fracture behavior

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Efficient chlorination reaction of Pt/RuO_(2)/g-C_(3)N_(4)under visible light irradiation for simultaneous removal of ammonia and bacteria from mariculture wastewater

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Journal of environmental sciences 2025年第4期150卷 490-502页

作者： Yizhan Zhang Min Zhao Yida Huang Yan-Ling Hu Lei Wang School of Environmental Science&Engineering Xiamen University of TechnologyXiamen 361024China Fujian Provincial Key Laboratory of Functional Materials and Applications School of Materials Science&EngineeringXiamen University of TechnologyXiamen 361024China

The removal of ammonia nitrogen(NH_(4)^(+)-N)and bacteria from aquaculture wastewater holds paramount ecological and production *** this study,Pt/RuO_(2)/g-C_(3)N_(4)photocatalysts were prepared by depositing Pt and RuO_(2)particles onto g-C_(3)N_(4).The physicochemical properties of photocatalysts were explored by X-ray photoelectron spectroscopy(XPS),scanning electron microscopy(SEM),X-ray diffraction(XRD),and UV–vis diffuse reflectance spectrometer(UV–vis DRS).The photocatalysts were then applied to the removal of both NH_(4)^(+)-N and bacteria from simulated mariculture *** results clarified that the removals of both NH_(4)^(+)-N and bacteria were in the sequence of g-C_(3)N_(4)

关键词： Photocatalysis Mariculture wastewater Ammonia nitrogen Visible light irradiation Microbial inactivation

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Protecting Lithium Metal Anodes in Solid-State Batteries

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Electrochemical Energy Reviews 2024年第1期7卷 1096-1148页

作者： Yuxi Zhong Xiaoyu Yang Ruiqi Guo Liqing Zhai Xinran Wang Feng Wu Chuan Wu Ying Bai Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019ZhejiangChina

Lithium metal is considered a highly promising anode material because of its low reduction potential and high theoretical specific ***,lithium metal is prone to irreversible side reactions with liquid electrolytes,resulting in the consumption of metallic lithium and electrolytes due to the high reactivity of lithium *** uneven plating/stripping of lithium ions leads to the growth of lithium dendrites and battery safety risks,hindering the further development and commercial application of lithium metal batteries(LMBs).Constructing solid-state electrolyte(SSE)systems with high mechanical strength and low flammability is among the most effective strategies for suppressing dendrite growth and improving the safety of ***,the structural defects,intrinsic ionic conductivity,redox potential and solid-solid contacts of SSEs can cause new electrochemical problems and solid-phase dendrite growth drawbacks in the application of solid-state batteries(SSBs).In this review,the mechanisms of lithium dendrite growth in SSEs are comprehensively *** to suppress lithium dendrite growth,stabilize the interface,and enhance ion transport in organic,inorganic and composite SSEs are *** conclude with not only relevant experimental findings but also computational predictions to qualitatively and quantitatively characterize the ionic conductivity,interfacial stability and other properties of SSEs based on both chemical and physical *** development direction and urgent problems of SSEs are summarized and discussed.

关键词： Lithium metal batteries Solid-state electrolytes Lithium metal anode Lithium dendrites

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Glycine betaine modulates extracellular polymeric substances to enhance microbial salinity tolerance

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environmental science and Ecotechnology 2024年第4期20卷 259-268页

作者： Yan Xia Xinbai Jiang Shuaishuai Guo Yuxuan Wang Yang Mu Jinyou Shen Key Laboratory of Environmental Remediation and Ecological Health Ministry of Industry and Information TechnologySchool of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing210094China CAS Key Laboratory of Urban Pollutant Conversion Department of Environmental Science and EngineeringUniversity of Science&Technology of ChinaHefei230026China

High salinity inhibits microbial activity in the bioremediation of saline *** alleviate osmotic stress,glycine betaine(GB),an osmoprotectant,is added to enhance the secretion of extracellular polymeric substances(EPS).These EPS are pivotal in withstanding environmental stressors,yet the intricate interplay between GB supplementation and microbial responses through EPS modificationsdencompassing composition,molecular architecture,and electrochemical featuresdremains elusive in hypersaline *** we show microbial strategies for salinity endurance by investigating the impact of GB on the dynamic alterations of EPS *** findings reveal that GB supplementation at 3.5%salinity elevates the total EPS(T-EPS)content from 12.50±0.05 to 24.58±0.96 mg per g dry cell *** observed shift in zeta potential from-28.95 to-6.25 mV at 0%and 3.5%salinity,respectively,with GB treatment,indicates a reduction in electrostatic repulsion and ***,the EPS protein secondary structure transition from b-sheet to a-helix,with GB addition,signifies a more compact protein configuration,less susceptible to salinity *** analyses,including cyclic voltammetry(CV)and differential pulse voltammetry(DPV),reveal GB's role in promoting the release of exogenous electron shuttles,such as flavins and c-type cytochromes(c-Cyts).The enhancement in DPV peak areas(Q_(DPV))with GB addition implies an increase in available extracellular electron transfer *** investigation advances our comprehension of microbial adaptation mechanisms to salinity through EPS modifications facilitated by GB in saline habitats.

关键词： High salinity Extracellular polymeric substances Glycine betaine Protein secondary structure Extracellular electron transfer

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Mechanistic insights into the synergetic remediation and amendment effects of zeolite/biochar composite on heavy metal-polluted red soil

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Frontiers of environmental science & engineering 2024年第9期18卷 105-114页

作者： Jing Li Dazhong Yang Wensong Zou Xuezhen Feng Ranhao Wang Renji Zheng Siyuan Luo Zheting Chu Hong Chen State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution ControlSchool of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China

Red soil,the most critical soil resource in tropical/subtropical regions worldwide,faces tremendous threats,including nutrient deficiency,acidification,and heavy metal *** is a great demand for multifunctional eco-materials capable of modifying this ***,we used widely distributed soil and biomass to develop a zeolite/biochar composite for synergistic red soil remediation and *** the composite material,the Pb^(2+) and Cd^(2+) remediation efficiencies reached 92.8%and 92.9%,respectively,in stems under optimal ***,the acidity and nutrient deficiency conditions of red soil significantly *** atomic-scale interaction mechanism during the remediation and amendment process was elucidated with complementary characterization methods,which revealed that in the zeolite/biochar composite material,zeolite contributes to longterm heavy metal remediation ***,biochar is responsible for soil quality amendment and short-term heavy metal ***,for the first time,single-atom heavy metal ions were observed on biochar during the remediation process,indicating the broad distribution of single atoms in the natural environment.

关键词： Red soil Heavy metal pollution Zeolite/biochar composite Soil remediation Soil amendment

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Health assessment method for core components of switching quantity interface circuit based on active excitation test 14

Health assessment method for core components of switching qu...

引用

14th International Conference on reliability, Maintainability and Safety, ICRMS 2023

作者： Xu, Peiyang Jia, Long Ma, Jian Chen, Chang Chen, Wei Lan, Chunyun Zou, Xinyu Li, Tianhao Science & Technology on Reliability & Environmental Engineering Laboratory School of Reliability and Systems Engineering Beihang University Beijing China School of Automation Science and Electrical Engineering Beijing Aerospace Institute of Automatic Control Beihang University Beijing China Science & Technology on Reliability & Environmental Engineering Laboratory School of Reliability and Systems Engineering Institute of Reliability Engineering Beihang University Beijing China Beijing Aerospace Institute of Automatic Control Beijing China

ISBN: (纸本)9798350329988

As power electronics technology continues to advance, the prevalence of switching quantity interface circuits has grown in diverse domains, encompassing industrial production and everyday civilian applications. An analysis of operational data from these circuits, along with an assessment of their overall health, proves instrumental in the timely detection and resolution of operational anomalies. This holds paramount significance in upholding the reliability of these interface circuits. Nevertheless, tracking the degradation trajectory of the core components during their operational lifespan poses a challenge. Typically, only two states, normal and abnormal, are readily discernible, making direct health assessment elusive. To address this issue, this study introduces a health assessment methodology for the fundamental components of switch quantity interface circuits based on active excitation testing. Through the application of active excitation, the performance decay profile of the optical coupler is ascertained, solving the problem of capturing the degradation process within these circuits. This approach facilitates the stable and precise characterization of the health status of switching quantity interface circuits. The health assessment method presented in this paper is characterized by modest computational resource demands and a reduced reliance on expert knowledge. It is adept at quantitatively delineating the health status of switch-quantity interface circuits with precision, thereby offering guidance for the maintenance and replacement of pivotal electronic components within these circuits. In doing so, it contributes to the assurance of operational dependability and an extension of the service life of switch quantity interface circuits. © 2023 IEEE.

关键词： reliability analysis

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