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Numerical studies for plasmas of a linear plasma device HIT-PSI with geometry modified SOLPS-ITER

Chinese Physics B 2024年第3期33卷 503-508页

作者：王敏聂秋月黄韬王晓钢张彦杰 School of Physics Harbin Institute of TechnologyHarbin 150001China School of Electrical Engineering and Automation Harbin Institute of TechnologyHarbin 150001China Laboratory for Space Environment and Physical Sciences Harbin Institute of TechnologyHarbin 150001China MOE (Ministry of Education) Key Laboratory of Materials Modification by Laser Ionand Electron BeamsSchool of PhysicsDalian Institute of TechnologyDalian 116024China

The HIT-PSI is a linear plasma device built for physically simulating the high heat flux environment of future reactor divertors to test/develop advanced target plate *** this study,the geometry-modified SOLPS-ITER program is employed to examine the effects of the magnetic field strength and neutral pressure in the device on the heat flux experienced by the target plate of the HIT-PSI *** findings of the numerical simulation indicate a positive correlation between the magnetic field strength and the heat flux ***,there is a negative correlation observed between the heat flux density and the neutral *** the magnetic field strength at the axis exceeds 1 tesla and the neutral pressure falls below 10 Pa,the HIT-PSI has the capability to attain a heat flux of 10 MW·m-2 at the target *** simulation results offer a valuable point of reference for subsequent experiments at HIT-PSI.

关键词： HIT-PSI heat flux linear plasma SOLPS-ITER device

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Electrical stress and acid orange 7 synergistically clear the blockage of electron flow in the methanogenesis of low-strength wastewater

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environmental Science and Ecotechnology 2024年第4期20卷 291-299页

作者： Ze-Chong Guo Min-Hua Cui Chun-Xue Yang Hong-Liang Dai Tong-Yi Yang Lin-Zhi Zhai Yong Chen Wen-Zong Liu Ai-Jie Wang School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang212100China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin150090China Jiangsu Key Laboratory of Anaerobic Biotechnology Jiangnan UniversityWuxi214122China School of Civil and Environmental Engineering Harbin Institute of TechnologyShenzhen518055China School of Geography and Tourism Harbin UniversityHarbin150001China School of Environmental Science and Engineering Huazhong University of Science and TechnologyWuhan430074China

Energy recovery from low-strength wastewater through anaerobic methanogenesis is constrained by limited substrate *** development of efficient methanogenic communities is critical but *** we develop a strategy to acclimate methanogenic communities using conductive carrier(CC),electrical stress(ES),and Acid Orange 7(AO7)in a modified *** synergistic integration of CC,ES,and AO7 precipitated a remarkable 72-fold surge in methane production rate compared to the *** increase was attributed to an altered methanogenic community function,independent of the continuous presence of AO7 and ***7 acted as an external electron acceptor,accelerating acetogenesis from fermentation intermediates,restructuring the bacterial community,and enriching electroactive bacteria(EAB).Meanwhile,CC and ES orchestrated the assembly of the archaeal community and promoted electrotrophic methanogens,enhancing acetotrophic methanogenesis electron flow via a mechanism distinct from direct electrochemical *** collective application of CC,ES,and AO7 effectively mitigated electron flow impediments in low-strength wastewater methanogenesis,achieving an additional 34%electron recovery from the *** study proposes a new method of amending anaerobic digestion systems with conductive materials to advance wastewater treatment,sustainability,and energy self-sufficiency.

关键词： Methanogenesis Conductive carrier Electrical stress Acid orange 7 Electron transfer

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Reaction pathways and selectivity in the chemo-catalytic conversion of cellulose and its derivatives to ethylene glycol:A review

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Chinese Journal of Chemical engineering 2024年第2期66卷 310-331页

作者： Yao Li Yuchun Zhang Zhiyu Li Huiyan Zhang Peng Fu College of Agricultural Engineering and Food Science Shandong University of TechnologyZibo 255000China Key Laboratory of Energy Thermal Conversion and Control Ministry of EducationSchool of Energy and EnvironmentSoutheast UniversityNanjing 210096China

Biomass-to-ethylene glycol is an effective means to achieve high-value utilisation of cellulose but is hindered by low conversion efficiency and poor catalyst activity and *** and cellobiose are derivatives of cellulose conversion to ethylene glycol,and it is found that studying the reaction process of both can help to understand the reaction mechanism of *** is desirable to develop a reusable,highly active catalyst to convert cellulose into ethylene *** ideal catalyst might have one or more active sites described the conversion steps ***,we discuss the catalyst development of celluloseto-ethylene glycol,including tungsten,tin,lanthanide,and other transition metal catalysts,and special attention is given to the reaction mechanism and kinetics for preparing ethylene glycol from cellulose,and the economic advantages of biomass-to-ethylene glycol are briefly *** insights given in this review will facilitate further development of efficient catalysts,for addressing the global energy crisis and climate change related to the use of fossil fuels.

关键词： Ethylene glycol Cellulose Catalyst Retro-aldol condensation Hydrolysis Kinetics

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Rational construction of heterointerfaces in biomass sugarcane-derived carbon for superior electromagnetic wave absorption

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International Journal of Minerals,Metallurgy and Materials 2024年第12期31卷 2749-2759页

作者： Shijie Zhang Di Lan Jiajun Zheng Ailing Feng Yaxing Pei Shichang Cai Suxuan Du Xingliang Chen Guanglei Wu Zirui Jia Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province Shaoxing Key Laboratory of High Performance Fibers&ProductsShaoxing UniversityShaoxing 312000China School of Materials Science and Engineering Hubei University of Automotive TechnologyShiyan 442002China School of Material Science and Engineering Henan University of TechnologyZhengzhou 450001China Institute of Physics&Optoelectronics Technology Baoji University of Arts and SciencesBaoji 721016China Zhengzhou Research Institute for Abrasives and Grinding Zhengzhou 450002China Institute of Materials for Energy and Environment State Key Laboratory of Bio-fibers and Eco-textilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China

The pervasive adoption of 5th generation mobile communication technology propels electromagnetic wave(EW)absorbents to achieve high-level *** heterointerface construction is crucial to the improvement of absorption ***,a series of ultralight composites with rational heterointerfaces(Co/ZnO@N-doped C/layer-stacked C,MSC)is fabricated by calcination with ration-al construction of sugarcane and CoZn-zeolitic imidazolate framework(ZIF).The components and structures of as-prepared composites were investigated,and their electromagnetic parameters could be adjusted by the content of *** composites possess excellent EW absorption performance,especially *** optimal minimum reflection loss and effective absorption band of MSC-3 can reach−42 dB and 7.28 GHz at the thickness of only 1.6 mm with 20wt%filler *** excellent performance is attributed to the syner-gistic effect of dielectric loss stemming from the multiple heterointerfaces and magnetic loss induced by magnetic single *** sugar-cane-derived layer-stacked carbon has formed consecutive conductive networks and has further dissipated the electromagnetic energy through multiple reflection and conduction ***,the simulated radar cross section(RCS)technology manifests that MSC-3 possesses outstanding EW attenuation capacity under realistic far-field *** study provides a strategy for building efficient ab-sorbents based on biomass.

关键词： sugarcane-derived carbon heterointerfaces bimetallic metal-organic frameworks EW absorption radar cross section

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Feedback mechanism between gully landforms and sediment trapping efficiency in a check dam

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国际水土保持研究（英文） 2025年第1期13卷 134-144页

作者： Jiangang Chen Xi'an Wang Huayong Chen Wanyu Zhao Chenyuan Wang Xiaoqing Chen State Key Laboratory of Natural Hazards and Engineering Safety Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu610299China University of Chinese Academy Sciences Beijing100049China Sichuan Province Engineering Technology Research Center of Mountain Hazard Mitigation Chengdu610299China State Key Laboratory of Natural Hazards and Engineering Safety Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu610299China University of Chinese Academy Sciences Beijing100049China

Check dams have been used worldwide for a variety of *** increasing age,check dams gradually lose their sediment trapping function via the continuous deposition of material carried by debris flows and flash floods,and eventually,check dams become unable to perform the designed mitigation *** this paper,the sediment deposit evolution in a dam with multiple debris flow surges and its influence on the sediment trapping effect were *** results showed that the debris flow deposition process can be divided into three phases:the backwater-controlled deposition phase,landform-controlled deposition phase,and quasi-equilibrium *** sediment trapping ratio of the check dam gradually decreased as the deposit volume increased and was linearly negatively correlated with the sediment deposition ***,a mathematical model describing the negative feedback between deposit volume and sediment trapping ratio was established,and the physical meanings of the coefficients in the model and their empirical values were ***,the deposit distribution,which satisfied the Weibull distribution in the longitudinal direction,was *** the cross-sectional direction,the distribution of deposition gradually became uneven with increasing sediment filling rate.

关键词： Debris flow Check dam Sediment trapping effect Landform evolution

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Photoreduction adjusted surface oxygen vacancy of Bi_(2)MoO_(6) for boosting photocatalytic redox performance

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Frontiers of Chemical Science and engineering 2023年第12期17卷 1937-1948页

作者： Tie Shi Hailong Jia Yanmei Feng Bo Gong Daimei Chen Yu Liang Hao Ding Kai Chen Derek Hao Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes National Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of GeosciencesBeijing 100083China School of Materials Science and Technology Shenyang University of Chemical TechnologyShenyang 110142China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoringand Pollution Control School of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China Centre for Technology in Water and Wastewater(CTWW) School of Civil and Environmental EngineeringUniversity of Technology Sydney(UTS)NSW 2007Australia

In this study, Bi_(2)MoO_(6) with adjustable rich oxygen vacancies was prepared by a novel and simple solvothermal-photoreduction method which might be suitable for a large-scale production. The experiment results show that Bi_(2)MoO_(6) with rich oxygen vacancies is an excellent photocatalyst. The photocatalytic ability of BMO-10 is 0.3 and 3.5 times higher than that of the pristine Bi_(2)MoO_(6) for Rhodamine B degradation and Cr(VI) reduction, respectively. The results display that the band energy of the samples with oxygen vacancies was narrowed and the light absorption was broadened. Meanwhile, the efficiency of photogenerated electron-holes was increased and the separation and transfer speed of photogenerated carriers were improved. Therefore, this work provides a convenient and efficient method to prepare potential adjustable oxygen vacancy based photocatalysts to eliminate the pollution of dyes and Cr(VI) in water.

关键词： Bi_(2)MoO_(6) oxygen vacancies photoreduction Cr(VI) RhB

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Plant allelochemicals inhibit the growth and colony formation of Microcystis

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Journal of Oceanology and Limnology 2024年第6期42卷 1839-1852页

作者： Xiao MA Xueli WANG Shaoqi ZHOU Jianrong MA Jingfu WANG Jingan CHEN Yan ZENG Qiao CHEN Boqiang QIN Ming LI College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550025China College of Natural Resources and Environment Northwest A&F UniversityYangling 712100China College of Liquor and Food Engineering Guizhou UniversityGuiyang 550025China Key Laboratory of Reservoir Environment Chongqing Institute of Green and Intelligent TechnologyChinese Academy of SciencesChongqing 400714China State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550002China State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China

Genus Microcystis is the most common dominant species of bloom-forming *** and colony formation are critical processes for the occurrence of Microcystis *** identify allelochemicals that can inhibit the growth and colony formation of Microcystis,Microcystis aeruginosa was cultivated and treated with various concentrations of gramine,catechol,berberine,and sanguinarine in *** indicate that the growth,colony formation,and extracellular polysaccharides(EPS)content of Microcystis were significantly inhibited when treated with gramine,catechol,and berberine in appropriate concentrations at high iron level(6.8 mg/L).Microcystis growth was inhibited and colony formation and EPS content were promoted when treated with sanguinarine at high iron *** findings suggest that cyanobacterial blooms can be controlled by regulating the input of gramine,catechol,and ***,this study revealed that plant allelochemicals could affect the growth and morphology of algae in aquatic ecological restoration,which may be potentially important for improving water quality.

关键词： algal bloom Microcystis colony plant allelochemicals ecological restoration

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Phosphorous and selenium tuning Co-based non-precious catalysts for electrosynthesis of H_(2)O_(2)in acidic media

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Chinese Chemical Letters 2024年第1期35卷 475-481页

作者： Jingxin Xie Lijie Zhong Xin Yang Dequan He Kanglong Lin Xiaoxia Chen Huan Wang Shiyu Gan Li Niu Guangdong Engineering Technology Research Center for Photoelectric Sensing Materials&Devices Guangzhou Key Laboratory of Sensing Materials&DevicesCenter for Advanced Analytical ScienceSchool of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China Department of Chemistry and Environment Science Fujian Provincial Key Laboratory of Modern Analytical Science and Separation TechnologyMinnan Normal UniversityZhangzhou 363000China

Electrosynthesis of hydrogen peroxide(H2O2)is an on-site method that enables independent distribution applications in many fields due to its small-scale and sustainable *** crucial point remains developing highly active,selective and cost-effective *** electrosynthesis of H2O2 in acidic media is more practical owing to its stability and no need for further *** herein report a phosphorus and selenium tuning Co-based non-precious catalyst(CoPSe)toward two-electron oxygen reduction reaction(2e–ORR)to produce H2O2 in acidic *** starting point of using both P and Se is finding a balance between strong ORR activity of CoSe and weak activity of *** results demonstrated that the CoPSe catalyst exhibited the optimized 2e–ORR activity compared with CoP and *** disclosed an onset potential of 0.68 V and the H2O2 selectivity 76%-85%in a wide potential range(0–0.5 V).Notably,the CoPSe catalyst overcomes a significant challenge of a narrow-range selectivity for transitionmetal based 2e–ORR ***,combining with electro-Fenton reaction,an on-site system was constructed for efficient degradation of organic *** work provides a promising non-precious Co-based electrocatalyst for the electrosynthesis of H2O2 in acidic media.

关键词： Oxygen reduction reaction Electrochemical H2O2 production Electrocatalysis Non-precious electrocatalyst Acidic media

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Efficient removal of natural organo-chromium(Ⅲ)through selfcirculating decomplex and immobilization with nanoscale zerovalent iron

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Nano Research 2024年第1期17卷 364-371页

作者： Zhicheng Dong Yunyun Xu Can Wu Jin Chao Chen Tian Zhang Lin School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China College of Ecology and Environment Chengdu University of TechnologyChengdu 610059China School of Environment and Energy The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters(Ministry of Education)South China University of TechnologyGuangzhou 510006China

Organo-chromium(III)complex is one of the chromium contaminant species,which would transform to high-toxic Cr(VI)during migrating in the *** natural organo-chromium(III)(NOCr)is difficult to remove by traditional degradation or precipitation methods,due to its high stability and ***,we demonstrated a novel NOCr removing method by transforming it to certain structures similar to Cr-Fe minerals in nature,through a self-circulating decomplex and immobilization mechanism with nano zero-valent iron(nZVI).Taking chromium glycinate(Cr-Gly)as a probe,nZVI showed a high Cr removal efficiency of 99.4%under ambient *** removal process included three stages of adsorption,decomplexation,and ***-Gly was first adsorbed on the surface of nZVI by chemisorption of the oxide ***,the adsorbed Cr-Gly was decomplexed and oxidized to Cr(VI)by·OH and 1O_(2),which were generated from molecular oxygen activated by ***,the released Cr(VI)could be in-situ adsorbed and re-reduced to Cr(III),which was further immobilized in form of Cr-O-Fe *** the Cr-O-Fe complexing structure was similar to that of Cr-Fe minerals(such as chromohercynite)in nature,this work explored a novel and efficient NOCr removing method that was potential to weaken chromium pollution in the environment.

关键词： organo-chromium(III) zero-valent iron adsorption decomplexation Cr immobilization

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Modeling and Experimental Study of an Open Two-Phase Loop Driven by Osmotic Pressure and Capillary Force

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Frontiers in Heat and Mass Transfer 2025年第1期23卷 55-70页

作者： Hanli Bi Zheng Peng Chenpeng Liu Zhichao Jia Guoguang Li Yuandong Guo Hongxing Zhang Jianyin Miao National Key Laboratory of SpacecraftThermal Control Beijing Institute of Spacecraft System EngineeringChina Academy of Space TechnologyBeijing100094China School of Aeronautical Science and Engineering Beihang UniversityBeijing100083China School of Energy and Environment Engineering University of Science and Technology BeijingBeijing100083China

As space technology advances,thermal control systems must effectively collect and dissipate heat from distributed,multi-source *** heat pipe is a highly reliable two-phase heat transfer component,but it has several limitations when addressing multi-source heat *** by the transport and heat dissipation system of plants,large trees achieve stable and efficient liquid supply under the influence of two driving forces:capillary force during transpiration in the leaves(pull)and root pressure generated by osmotic pressure in the roots(push).The root pressure provides an effective liquid supply with a driving force exceeding 2 MPa,far greater than the driving force in conventional capillary-pumped two-phase *** has shown that osmotic heat pipes offer a powerful driving force,and combining osmotic pressure with capillary force has significant ***,this paper designs a multi-evaporator,dual-drive two-phase loop,using both osmotic pressure and capillary force to solve the multi-source heat dissipation ***,a transmembrane water flux model for the osmotic pressure-driven device was established to predict the maximum heat transfer capacity of the dual-drive two-phase ***,an experimental setup for a multi-evaporator“osmotic pressure+capillary force”dual-drive two-phase loop was constructed,capable of transferring at least 235 W of power under a reverse gravity condition of 20 *** study also analyzed the effects of reverse gravity height,heat load distribution among the three evaporators,startup sequence,and varying branch resistances on the performance of the dual-drive two-phase loop.

关键词： Multi-heat sources osmotic pressure two-phase loop dual-drive loop heat pipe

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