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Intensifying electrified flow-through water treatment technologies via local environment modification

Frontiers of environmental Science & Engineering 2024年第6期18卷 17-25页

作者： Zheng-Yang Huo Xiaoxiong Wang Xia Huang Menachem Elimelech School of environment and Natural Resources Institute of Ecological CivilizationRenmin University of ChinaBeijing 100872China Institute for Ocean Engineering Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Center of Double Helix Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China State Key Joint Laboratory of environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Department of Chemical and environmental Engineering Yale UniversityNew HavenCT 06520-8286USA

Removing high-risk and persistent contaminants from water is challenging,because they typically exist at low concentrations in complex water *** flow-through technologies are viable to overcome the limitations induced by mass transport for efficient contaminant *** the local environment of the flow-through electrodes offers opportunities to further improve the reaction kinetics and selectivity for achieving near-complete removal of these contaminants from ***,we present state-of-the-art local environment modification approaches that can be incorporated into electrified flow-through technologies to intensify water *** first show methods of nanospace incorporation,local geometry adjustment,and microporous structure optimization that can induce spatial confinement,enhanced local electric field,and microperiodic vortex,respectively,for local environment *** then discuss why local environment modification can complement the flow-through electrodes for improving the reaction rate and ***,we outline appropriate scenarios of intensifying electrified flow-through technologies through local environment modification for fit-for-purpose water treatment applications.

关键词： Point-of-use water treatment Electrified membrane Advection-enhanced mass transport Water decontamination and disinfection Emerging contaminants

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Technical alternatives for coke oven gas utilization in China: A comparative analysis of environment-economic-strategic perspectives

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environmental Science and Ecotechnology 2024年第5期21卷 168-177页

作者： Zichen Di Feixia Lei Jiankai Jing Hao Peng Xi Lu Fangqin Cheng Institute of Resources and environmental Engineering Shanxi UniversityTaiyuan030006PR China School of environment State Key Joint Laboratory of Environment Simulation and Pollution ControlTsinghua UniversityBeijing100084PR China Institute for Carbon Neutrality Tsinghua UniversityBeijing100084PR China

China is the largest coke producer and *** is a pressing need to address the high emissions of air pollutants and carbon dioxide associated with traditional coking *** the nation pursues a transition towards carbon neutrality,expanding supply chains for coking plants to produce hydrogen,methanol,and other green alternatives has garnered significant ***,the relative advantages of these strategies have remained *** this study,we integrate a life cycle assessmenteconomic analysis-scenario analysis model to evaluate various coke oven gas(COG)utilization routes(COGtM:COG-to-methanol,COGtLNG:COG-to-liquefied natural gas,COGtSA:COG-to-synthetic ammonia,and COGtH:COG-to-hydrogen).The results indicate that COGtSA emerges as the preferred option for balancing environmental and economic ***,COGtM demonstrates economic viability but is associated with higher environmental *** being recognized as a significant strategic direction under carbon neutrality initiatives,COGtH faces economic feasibility and risk resilience *** encounters both financial and environmental challenges,necessitating strategic development from an energy security *** projected coking capacity is anticipated to experience a slight increase in the mid-term yet a significant decline in the long term,influenced by steel production *** potential future markets,COGtM is estimated to potentially capture a maximum market share of 16e34%in the methanol ***,against the backdrop of continuously expanding potential demand for hydrogen,COGtH holds advantages as a transitional solution,but in the long run,it can only meet a small portion of the *** can meet 7e14%of market demand and emerges as the most viable pathway from the viewpoint of balancing environmental and economic aspects and covering future markets.

关键词： Coke oven gas Life cycle assessment Economic analysis Comprehensive benefits Transformation strategy

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Effects of thinning on the understory light environment of different stands and the photosynthetic performance and growth of the reforestation species Phoebe bournei

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Journal of Forestry Research 2024年第1期35卷 12-28页

作者： Shicheng Su Nianqing Jin Xiaoli Wei College of Forestry Guizhou UniversityGuiyang 550025People’s Republic of China Institute for Forest Resources and environment of Guizhou Guizhou UniversityGuiyang 550025People’s Republic of China

Light levels determine regeneration in stands and a key concern is how to regulate the light environment of different stand types to the requirements of the *** this study,we selected three stands typical in south China(a Cryptomeria japonica plantation,a Quercus acutissima plantation,and a mixed stand of both)and three thinning intensities to determine the best understory light environ-ment for 3-year-old Phoebe bournei *** canopy structure,understory light environment,and photosynthe-sis and growth indicators were assessed following *** improved canopy structure and understory light availability of each stand;species composition was the reason for differences in the understory light *** the same thinning intensity,the mixed stand had the greatest light radiation and most balanced spectral *** photosynthesis and growth were closely related to the light environment;all three stands required heavy thinning to create an effective and sustained understory light *** a suitable understory light environment,the efficiency of light interception,absorption,and use by seedlings was enhanced,resulting in a higher carbon assimilation the main limiting factor was stomatal *** a shade-avoidance signal,red/far-red radia-tion is a critical factor driving changes in photosynthesis and growth of *** seedlings,and a reduction increased light absorption and use capacity and height:diameter *** growth advantage transformed from diameter to height,enabling seedlings to access more *** findings suggest that the regeneration of shade-tolerant species such as *** could be enhanced if a targeted approach to thinning based on stand type was adopted.

关键词： Thinning Understory light environment Phoebe bournei Photosynthetic performance Growth performance

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Evaluation of suitability of university ladder classroom environment on humans

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Energy and Built environment 2024年第4期5卷 615-627页

作者： Xin Liu Xiu Geng Kailiang Huang Guohui Feng He Zhao Xiaotong Wang Jianing He School of Municipal and environment Engineering Shenyang Jianzhu UniversityShenyang 100168China Jianke EET Co. Ltd.Beijing 100013China

Evaluation of the suitability of university ladder classroom environment on humans is an effective approach to improve the quality of the indoor environment and protect human ***,there are unresolved issues regarding the suitability of university ladder classroom environment for *** example,the design of en-closure structure and heating ventilation and air conditioning(HVAC)system is unreasonable,and the indoor air quality does not meet the required *** this study,the suitability of university ladder classroom environ-ment on humans was considered the research *** evaluation indices of indoor environment were selected from indoor air quality,indoor thermal and humid environments,light environment,and sound *** the health and comfort of users were taken as the evaluation indices of *** to the results of expert investigations and case measurements,the index weight was determined by the expert-entropy weight method,and a complete evaluation system of indices was *** were two first-level,six second-level,and fourteen third-level indices in the evaluation *** evaluation indices of each level with the largest weight were indoor environment(0.5940),user health(0.2530),and indoor temperature(0.1175)*** comparing the actual learning effect to the evaluation results,the applicability of the evaluation system was *** evaluation system of the suitability of university ladder classroom environment on humans is convenient for operators to identify the weak points between humans and the *** evaluation system is endowed with important theoretical and practical significance to realize the green development of colleges and universities and build an environment-friendly campus.

关键词： Severe cold region Suitability of environment on humans Natural ventilation Expert-entropy weight method Evaluation system

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Effect of solar radiation on human thermal sensation and physiological parameters in a convection–radiation air conditioning environment

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Building Simulation 2024年第8期17卷 1359-1377页

作者： Guanyu Li Dong Liu Anjie Hu Qidong Yan Lina Ma Liu Tang Xiaozhou Wu Jun Wang Zhenyu Wang School of Civil Engineering and Architecture Southwest University of Science and TechnologyMianyang 621010China Sichuan Province Engineering Technology Research Center of Healthy Human Settlement Chengdu 610065China Sichuan University Engineering Design&Research Institute Co.Ltd Chengdu 610065China School of Civil Engineering Dalian University of TechnologyDalian 116081China College of Architecture and environment Sichuan UniversityChengdu 610065China School of environment and Resources Southwest University of Science and TechnologyMianyang 621010China

This study focused on the effect of glass structures of modern architecture on the indoor thermal environment during *** particular,this study examined how solar radiation significantly altered people’s thermal *** tests on convection–radiation air conditioning systems were conducted,encompassing 12 different scenarios,including diverse indoor open areas,terminal forms,and levels of solar *** tests aimed to explore the physiological and psychological responses of the human body to solar radiation penetrating through windows into the inner *** the experiments,the participants’subjective thermal sensations and thermal comfort were recorded,along with continuous monitoring of their physiological and environmental *** showed that solar radiation significantly increased local skin temperature,with a maximum rise of 2.15℃.Operative temperature is a reliable indicator of human skin temperature and thermal sensation vote(TSV).This study established two models that could predict the skin temperature of individuals indoors through operative temperature under conditions without or with solar radiation,and identified sensitive ranges of operative temperature for both models,to be specific,26.32℃to 28.43℃and 28.51℃to 34.11℃,***,this study established the relationship between skin temperature and TSV under conditions with and without solar *** results indicate that solar radiation enhances the human body’s adaptability to indoor environmental parameters;a convection–radiation system(FC+RF)could be used to optimize indoor thermal control under solar radiation,achieving more stable environmental temperatures and improved indoor comfort.

关键词： system modeling solar radiation mean skin temperature thermal comfort terminal form irradiation area

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Is atmospheric pathway a significant contributor to microplastics in the marine environment?

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Emerging Contaminants 2024年第2期10卷 26-32页

作者： Nazima Habibi Saif Uddin Montaha Behbehani Jin-Yong Lee environment and Life Sciences Research Center Kuwait Institute for Scientific ResearchKuwait Department of Geology Kangwon National UniversityChuncheon24341Republic of Korea

Transmission of microplastics(MPs)through aerosolization has been recently realized as an important *** of the reports of the ubiquitous MP presence in aerosols,the spatio-temporal information is inadequate and has very limited practicality in assessing if aerosol can be a significant source of MPs to the marine *** on marine contribution to atmospheric MPs is exceptionally scarce,and the ocean-air exchange is considered an emerging research *** of MPs entering the oceans via atmospheric deposition has been recently *** idea of ocean-air exchange emanates from the fact that beach sediments can get suspended under sand and dust storms,bubble bursts and sea sprays due to wind and waves in surf zones can lead to the ejection of particles into *** this succinct review,we have tried compiling the data on atmospheric MPs that can shed some light on the flux from and to the aquatic *** the information is too limited never the less its incorporation into the marine MP cycle cannot be neglected.

关键词： Marine-atmospheric flux Aerosols Microplastics MP load MP inventories

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Riverine sulfate sources and behaviors in arid environment,Northwest China:Constraints from sulfur and oxygen isotopes

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Journal of environmental Sciences 2024年第3期137卷 716-731页

作者： Yifu Xu Wenjing Liu Bing Xu Zhifang Xu Key Laboratory of Cenozoic Geology and environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China

The fate of riverine sulfate ion (SO_(4)^(2-)) and its environmental effects in arid environment are difficult to evaluate due to its complicated sources and strongly coupled behaviors with water cycle which is significantly modified by *** understand the sulfur cycle in aquatic systems in arid environment,the chemical and sulfur and oxygen isotopic compositions (δ^(34)S_(SO4)and δ^(18)O_(SO4)) of major rivers around the Badain Jaran Desert,northwestern China,were *** rivers had averaged SO_(4)^(2-)content at 1336μmol/L,over 10times higher than the global *** δ^(34)S_(SO4)and δ^(18)O_(SO4)values ranged from-5.3‰to+11.8‰and+1.6‰to+12.8‰,*** end-member analysis and the inverse model showed that riverine sulfate was mainly derived from evaporites dissolution (0-87%),sulfide oxidation (13%-100%) and precipitation (0-33%),indicating heterogeneity in sulfur sources and behaviors along the river drainage with the lithology variations and climate *** isotopic tools combining with hydro-chemistry compositions could be applied to reveal sulfur cycle in arid *** on the calculation,sulfide oxidation plays the primary role in the headwater and upstream in the Qilian-Mountains area,where sulfide is widely *** the proportion of evaporites dissolution contributing to riverine sulfate is much higher in downstream in a drier ***,less precipitation and higher temperature can lead to more intensive evaporation,affecting the process of sulfide oxidation and enhancing the rates of evaporites dissolution and sulfate precipitation in the basin.

关键词： Sulfur and oxygen isotopes Source apportionment Inverse model Arid environment Inland rivers Northwestern China

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Protective benefits of HDPE board sand fences in an environment with variable wind directions on Gobi surfaces:wind tunnel study

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Journal of Mountain Science 2024年第10期21卷 3353-3367页

作者： ZHANG Kai TIAN Jianjin LIU Benli ZHAO Yanhua ZHANG Hailong WANG Zhenghui DENG Yuhui College of Civil Engineering Lanzhou Jiaotong UniversityLanzhou 730000China Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China

The Golmud-Korla Railway in the Gobi area faces operational challenges due to sand hazards,caused by strong and variable *** study addresses these challenges by conducting wind tunnel tests to evaluate the protective benefits of High Density Polyethylene(HDPE)board sand fences,focusing on their orientation relative to various wind directions(referred to as'wind angle').This study found that the size of the low-velocity zone on the leeward side of the sand fences(LSF)expanded with an increase in the wind angle(WA).At 1H(the height of the sand fence)and 2H positions on the LSF,the wind speed profiles(WSP)exhibited a segmented logarithmic growth,constrained by Z=H at varying *** efficacy of the sand fence in obstructing airflow escalated as WA *** size of the WA has a significant impact on the protective efficiency of HDPE board sand ***,compared to typical sandy surfaces,the rate of sand transport across the Gobi surface diminishes more slowly with height,attributed to the gravel's rebound *** phenomenon allows some sand particles to bypass the fences,rendering them less effective at blocking wind and trapping sand than in sandy *** paper offers scientific evidence supporting the practical use and enhancement of HDPE board sand fences in varied wind conditions.

关键词： Variable wind directions Blown sand control Wind tunnel tests HDPE board sand fences

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Persistent organic pollutants and chemicals of emerging Arctic concern in the Arctic environment

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environmental Science and Ecotechnology 2024年第2期18卷 1-3页

作者： Yi-Fan Li Roland Kallenborn Zifeng Zhang International Joint Research Center for Persistent Toxic Substances(IJRC-PTS) State Key Laboratory of Urban Water Resource and EnvironmentHarbin Institute of TechnologyHarbin 150090China International Joint Research Center for Arctic environment and Ecosystem(IJRC-AEE) Polar AcademyHarbin Institute of Technology(PA-HIT)Harbin 150090China Heilongjiang Provincial Key Laboratory of Polar environment and Ecosystem(HPKL-PEE) Harbin 150090China IJRC-PTS-NA TorontoONM2J 3N8Canada Faculty of Chemistry Biotechnology and Food Sciences(KBM)Norwegian University of Life Sciences(NMBU)NOe1433 AsNorway

environmental pollutants,such as persistent organic pollutants(POPs),enter the Arctic mainly via long-range transport(LRT)through atmospheric and ocean/river *** the other hand,chemicals of emerging Arctic concern(CEACs)are often introduced as local contaminants from industrial,municipal,or infrastructure-related *** of their origins,all these contaminants negatively impact the health of the environment and the indigenous ***,in recent decades,the Arctic has been experiencing unprecedented climate *** combination of Arctic environmental changes and the introduction of new anthropogenic contaminants as chemical aids for exploiting Arctic resources led to a severe imbalance in the Arctic ***,an international consortium of Arctic experts asked for internationally coordinated actions to mitigate the serious problems that environmental pollution causes on Arctic ecosystems and people,according to the Berlin statement[1].

关键词： Arctic statement pollution

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Spatial heterogeneity and driving mechanism of urban climbing and its impact on regional environment in varied landform types in the middle reaches of the Yellow River

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Journal of Mountain Science 2024年第10期21卷 3413-3433页

作者： SUN Congjian CONG Jiamin CHEN Wei College of Geography Shanxi Normal UniversityTaiyuan 030031China Research Center of Ecological environment in the Middle Reaches of the Yellow River Shanxi Normal UniversityTaiyuan 030031China

Urbanization research is essential for the sustainable use of regional land resources and ecological environment *** expansion process and driving factors of urban construction land at different scales in the middle reaches of the Yellow River(MRYR)have not been comprehensively *** this study,we explored the distribution pattern of urban construction land on different slope gradients at different scales and analyzed its influencing *** main findings were as follows:(1)There has been significant expansion of urban construction land in the MRYR over the past 20 *** heterogeneity was observed in the regional urban construction land expansion process among different geomorphic regions.(2)The urban construction land in the MRYR was expanded vertically to areas with slopes of>5°,particularly in 2005–*** slope climbing of urban construction land was observed in the loess hilly-gully and rocky mountain areas.(3)In MRYR,68.45%of the counties were categorized as the slope-climbing types,including 37.38%high-slope-climbing types.(4)The regional population density and economic development level were closely associated with regional urban construction land area variability.(5)The climbing process of regional urban construction can effectively alleviate farmland encroachment and pressure on the regional ecological *** urban expansion of the metropolitan distribution areas in the Plain region(such as Xi'an,Taiyuan)had a relatively significant impact on the local carbon storage.

关键词： Urban expansion Temporal and spatial distribution Slope climbing Driving factors

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