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The variation of DOM during long distance water transport by the China South to North Water Diversion Scheme and impact on drinking water treatment

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Frontiers of environmental Science & engineering 2024年第5期18卷 85-100页

作者： Hankun Yang Yujuan Li Hongyu Liu Nigel J.D.Graham Xue Wu Jiawei Hou Mengjie Liu Wenyu Wang Wenzheng Yu State Key Laboratory of environmental Aquatic Chemistry Key Laboratory of Drinking Water Science and TechnologyResearch Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085China school of environment and municipal engineering Qingdao Technological UniversityQingdao266033China Colleges of Forestry Northeast Forestry UniversityHarbin150006China Department of Civil and environmental engineering Imperial College LondonSouth Kensington CampusLondonSW7 2AZUK school of Chemistry and Chemical engineering Beijing Institute of TechnologyBeijing100081China State Key Laboratory of Separation Membrane Processes School of Environment Science and EngineeringTiangong UniversityTianjin300387China

In this study,samples were taken from three locations,upstream to downstream,along the central route project of the China South to North Water Diversion(SNWD)scheme in summer and *** were used to reveal the variations of dissolved organic matter(DOM)during the water transfer process,and the effects of these variations on drinking water treatment and disinfection by-products formation potential(DBPs-FP).The results showed that polysaccharides accumulate in summer and reduce in winter with flow distance,which has an important effect on the overall properties of DOM,as well as on the performance of coagulation,ultrafiltration,and the formation of *** substances,and their hydrophilic content,also increased in summer and decreased in winter with flow *** contrast,the concentration of small organic substances(MW≤1000 Da)increased in both summer and winter with flow distance,which affected both nanofiltration(NF)membrane fouling and *** results provide a useful case study of spatial and temporal changes in raw water DOM during long distance water transfer and their impact on the treatment and quality of drinking water from the SNWD.

关键词： Long-distance water transfer The China South to North Water Diversion Scheme Coagulation Membrane filtration Disinfection by-products

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Recent advances in single-atom catalysts(SACs)for photocatalytic applications

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Materials Reports(Energy) 2024年第3期4卷 1-18页

作者： Tingcha Wei Jing Zhou Xiaoqiang An school of Physics South China Normal UniversityGuangzhou510006China MIIT Key Laboratory of Aerospace Information Materials and Physics College of PhysicsNanjing University of Aeronautics and AstronauticsNanjing211106China Key Laboratory of Songliao Aquatic environment Ministry of EducationSchool of Municipal and Environmental EngineeringJilin Jianzhu UniversityChangchun130118China Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua UniversityBeijing100084China

Artificial photocatalysis represents a hopeful avenue for tackling the global crisis of environmental and energy *** crux of industrial application in photocatalysis lies in efficient photocatalysts that can inhibit the recombination of photogenerated charge carriers,thereby boost the efficiency of chemical *** the past decade,single-atom catalysts(SACs)have been growing extremely rapidly and have become the forefront of photocatalysis owing to their superior utilization of metal atoms and outstanding catalytic *** this work,we provide an overview of the latest advancements and challenges in SACs for photocatalysis,focusing on the photocatalytic mechanisms,encompassing the generation,separation,migration,and surface extraction of photogenerated *** also explore the design,synthesis,and characterization of SACs and introduce the progress of SACs for photocatalytic applications,such as water splitting and CO_(2)***,we offer our personal perspectives on the opportunities and challenges of SACs in photocatalysis,aiming to provide insights into the future studies of SACs for photocatalytic applications.

关键词： Single-atom catalysts Artificial photocatalysis Water splitting CO_(2)reduction

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Multivariate statistical and bioinformatic analyses for the seasonal variations of actinobacterial community structures in a drinking water reservoir

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Journal of environmental Sciences 2024年第3期137卷 1-17页

作者： Haihan Zhang Sixuan Pan BenMa Tinglin Huang Dmitry B.Kosolapov Manli Ma Xiang Liu Huan Liu Xiaoyan Liu Shaanxi Key Laboratory of environmental engineering Key Laboratory of Northwest Water ResourceEnvironment and EcologyMOEXi’an University of Architecture and TechnologyXi’an 710055China school of environmental and municipal engineering Xi’an University of Architecture and TechnologyXi’an 710055China Papanin Institute for Biology of Inland Waters of Russian Academy of Sciences(IBIW RAS) 109BorokNekouzYaroslavl152742Russia

Actinobacterial community is a conspicuous part of aquatic ecosystems and displays an important role in the case of biogeochemical cycle,but little is known about the seasonal variation of actinobacterial community in reservoir ecological *** this study,the high-throughput techniques were used to investigate the structure of the aquatic actinobacterial community and its inducing water quality parameters in different *** results showed that the highest diversity and abundance of actinobacterial community occurred in winter,with Sporichthya(45.42%)being the most abundant genus and Rhodococcus sp.(29.32%)being the most abundant *** analysis and correlation analysis suggested that in autumn the dynamics of actinobacterial community were infuenced by more factors and Nocardioides ***2R5S2 was the potential keystone species which was negatively correlated with temperature(R=-0.72,Penvironmental factors could significantly affect the changes in actinobacterial community,and the dynamics of temperature,dissolved oxygen(DO),and turbidity are potential conspicuous factors infuencing seasonal actinobacterial community *** partial least squares path modeling further elucidated that the combined effects of DO and temperature not only in the diversity of actinobacterial community but also in other water qualities,while the physiochemical parameters(path coefficient=1.571,Penvironmental factors in natural mixture *** results strengthen our understanding of the dynamics and structures of actinobacterial community in the drinking water reservoirs and provide scientific guidance for further water quality management and protection in water sources.

关键词： Source water reservoir High-throughput sequencing Correlation analysis Network analysis Partial least squares path modeling

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Co-incorporation of Chinese milk vetch(Astragalus sinicus L.)and chemical fertilizers alters microbial functional genes supporting short-time scale positive nitrogen priming effects in paddy soils

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Pedosphere 2024年第3期34卷 567-576页

作者： Limin WANG Chunmei HE Dongfeng HUANG Juhua YU Cailing LIU Qinghua LI Yibin HUANG Juan LI Fei WANG Institute of Resources Environment and Soil FertilizerSoil and Fertilizer InstituteFujian Academy of Agricultural SciencesFuzhou 350012(China) school of Resources and environment engineering Anhui UniversityHefei 230601(China)

Nitrogen(N)priming is a microbially mediated biochemical process as affected by different incorporation ***,little information is known about the microbial mechanisms driving the response of N priming to co-operation of Chinese milk vetch(CMV,Astragalus sinicus L.)and different rates of chemical fertilizers in paddy soils in South ***,an anaerobic incubation experiment was conducted to study N priming effects(PE)and their relationships with soil microbial functional genes after CMV incorporation alone(M),co-incorporation of CMV with 100%(normal dosage)chemical fertilizers(MC100),and co-incorporation of CMV with 80% chemical fertilizers(MC80).Co-incorporation of CMV and chemical fertilizers enhanced the short-time scale(the first 20 d of incubation)positive PE of N,while no significant differences existed among the three treatments on day 60 or 90 of incubation(P>0.05).Compared with the M treatment,gross priming effect(GPE)in the MC100 and MC80 treatments significantly increased by 34.0% and 31.3%,respectively,and net priming effect(NPE)increased by 47.7% and 47.8%,respectively,during the first 20 d of incubation(P<0.05).This was likely attributed to soil nutrient availability and added substrate *** MC100 and MC80 treatments increased the gdhA gene abundance by 5.0% and 9.8%,increased the gdh2 gene abundance by 12.7% and 45.7%,and increased the nasB gene abundance by 9.5% and 41.4%,respectively,in comparison with the M treatment on day 20 of *** analyses indicated that soil microbial functional genes involved in N mineralization(gdhA and gdh2),assimilatory nitrate reduction(nasB),and nitrification(amoB)were significantly correlated with N priming under different incorporation practices during the incubation period(P<0.05).Thus,co-incorporation of CMV and chemical fertilizers can regulate soil microbial community functional gene structure,which may accelerate mineralization and assimilatory nitrate reduction and inhibit

关键词： green manure gross priming effect incorporation practice microbial mechanism net priming effect rice field soil

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Effective peroxydisulfate activation by CQDs-MnFe_(2)O_(4)@ZIF-8 catalyst for complementary degradation of bisphenol A by free radicals and non-radical pathways

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Chinese Chemical Letters 2024年第5期35卷 371-379页

作者： Shuo Li Xinran Liu Yongjie Zheng Jun Ma Shijie You Heshan Zheng College of Chemistry and Chemical engineering Qiqihar UniversityQiqihar 161006China State Key Laboratory of Urban Water Resource and environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China

The present study reported fabrication of novel carbon quantum dots-MnFe_(2)O_(4)@ZIF-8(CQDs-MFO@ZIF-8)by using co-precipitation hydrothermal method for activation of peroxydisulfate(PDS)to degrade bisphenol A(BPA),one of important emerging organic pollutants in water ***-MFO@ZIF-8 served as a highly efficient thermal activated PDS catalyst with high catalytic degradation efficiency,reusability and *** catalyst achieved almost completely removal of 20.0 mg/L BPA within 5.0 min,and the degradation efficiency remained higher than 83%after 5 consecutive *** radicals(^(·)OH,SO_(4)^(·-)and^(·)O_(2)^(-))and non-free radicals((1)O_(2))were generated in the thermal PDS-activation system,in which singlet oxygen((1)O_(2))played a dominant role in the degradation of *** potential toxicity of BPA degradation intermediates was analyzed upon the culture of *** and Chlorella sorokiniana by using Ecological Structure-Activity Relationship Model(ECOSAR)*** catalytic performances of BPA degradation by CQDs-MFO@ZIF-8 were evaluated for treatment of different practical water samples to further verify the feasibility of practical *** study provides proof-in-concept demonstration of new nanomaterials for enhanced catalytic water decontamination.

关键词： Bisphenol A Degradation Peroxydisulfate ^(1)O_(2) Toxicity analysis

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Potential application of radiant floor cooling systems for residential buildings in different climate zones

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Building Simulation 2024年第4期17卷 543-560页

作者： Mengying Cui Yang Song Yudong Mao Kaimin Yang Jiying Liu Zhe Tian school of Thermal engineering Shandong Jianzhu UniversityJinan250101China school of environmental Science and engineering Tianjin UniversityTianjin300072China Key Lab of Building environment and Energy of Tianjin Tianjin UniversityTianjin300072China

A radiant floor cooling system(RFCS)is a high-comfort and low energy consumption system suitable for residential *** floor systems usually work with fresh air,and their operating performance is affected by climatic *** and outdoor environmental disturbances and the system’s control strategy affect the indoor thermal comfort and energy efficiency of the ***,a multi-story residential building model was established in this *** system simulation program was used to study the operation dynamics of three control strategies of the RFCS based on the calibrated ***,the performance of the control strategies in five climate zones in China were compared using multi-criteria decision-making in *** results show that control strategy has a negligible effect on condensation risk,but the thermal comfort and economic performance differ for different control *** adaptability of different control strategies varies in different climate zones based on the consideration of multiple *** performance of the direct-ground cooling source system is better in Hot summer and warm winter *** variable air volume control strategy scores higher in Serve cold and Temperate zones,and the hours exceeding thermal comfort account for less than 3%of the total simulation ***,it is suggested to choose the RFCS control strategy for residential buildings according to the climate zone characteristics,to increase the energy *** results provide a reliable reference for implementing RFCSs in residential buildings.

关键词： control strategy radiant floor cooling system residential building energy efficiency climate zones

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Uniform lithium deposition induced by copper phthalocyanine additive for durable lithium anode in lithium-sulfur batteries

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Chinese Chemical Letters 2024年第5期35卷 447-452页

作者： Ting Hu Yuxuan Guo Yixuan Meng Ze Zhang Ji Yu Jianxin Cai Zhenyu Yang Key Laboratory of Jiangxi Province for environment and Energy Catalysis School of Chemistry and Chemical EngineeringNanchang UniversityNanchang 330031China

Copper phthalocyanine(CuPc)is adopted as an electrolyte additive to stabilize lithium anode for lithiumsulfur(Li-S)*** with a planar molecular structure and lithiophilic N-containing group,is likely to be adsorbed on the surface of Li anode to form a coating layer,which can restrict the direct contact between Li anode and solvents,and guide the uniform deposition of Li^(+)*** Li||Li symmetric cells demonstrate a stable cycle performance,and Li||Cu cells show high Coulombic *** Li-S batteries,the formed stable solid-electrolyte interface(SEI)film containing copper sulfides can protect Li anode from the polysulfide corrosion and side reactions with the electrolyte,leading to the compact and smooth surface morphology of Li ***,the Li-S batteries with CuPc additive deliver much higher capacity,better cycle performance and rate capability as compared to the one without CuPc additive.

关键词： Copper phthalocyanine Electrolyte additive Stable SEI film Stabilized Li anode Lithium-sulfur batteries

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C14-HSL limits the mycelial morphology of pathogen Trichosporon cells but enhances their aggregation:Mechanisms and implications

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Chinese Chemical Letters 2024年第6期35卷 398-403页

作者： Xin Lu Haoran Sun Xiaomeng Li Chunrui Li Jinfeng Wang Dandan Zhou Jilin engineering Lab for Water Pollution Control and Resources Recovery School of the EnvironmentNortheast Normal UniversityChangchun 130117China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

The biosecurity hazards caused by pathogenic fungus have been widely *** the long-term coexistence of eukaryotic pathogens and quorum sensing bacteria in different habitats in environments,we hypothesized that they have social interactions via signal *** this work,we firstly discovered the well-known bacterial signal molecules play an adverse role in the cell morphology and metabolism in a model pathogen Trichosporon asahii.N-Tetradecanoyl-L-homoserine lactone(C14-HSL)was discovered to increase pathogen hazards of ***,which limited mycelium by 52%,but enhanced cell aggregation by 93%.Higher fluorescence intensity of tryptophan(59%)and aromatic protein(2-fold)contents after the treatment of C14-HSL,indicating that aromatic proteins helped aggregate Trichosporon and showed *** analysis revealed that C14-HSL upregulated the shikimate pathway(above1-fold)located in downstream of tricarboxylic acid cycle,which contributed to the synthesis of more aromatic proteins and the formation of larger *** limited mycelial growth of *** attributed to the up-regulated expressions of cell cycle *** fungal transboundary response to bacterial C14-HSL was controlled by signal transduction *** study provides new insights into the co-evolution of bacterial and pathogenic fungi in microecosystems.

关键词： Bacterial C14-HSL Mycelium Cell cycle Aggregation Aromatic proteins

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Thermodynamics-directed bulk/grain-boundary engineering for superior electrochemical durability of Ni-rich cathode

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Journal of Energy Chemistry 2024年第10期97卷 321-331页

作者： Kangyu Zou Mingzhu Jiang Tianxiang Ning Lei Tan Junchao Zheng Jiexi Wang Xiaobo Ji Lingjun Li school of Materials Science and engineering Changsha University of Science and Technology school of Metallurgy and environment Central South University National engineering Research Centre of Advanced Energy Storage Materials College of Chemistry and Chemical engineering Central South University

Introducing high-valence Ta element is an essential strategy for addressing the structu ral deterioration of the Ni-rich LiNi1-x-yCoxMnyO2（NCM） cathode,but the enlarged Li/Ni cation mixing leads to the inferior rate capability originating from the hindered Li+*** that the non-magnetic Ti4+ion can suppress Li/Ni disorder by removing the magnetic frustration in the transition metal ***,it is still challenging to directionally design expected Ta/Ti dual-modification,resulting from the complexity of the elemental distribution and the uncertainty of in-situ formed coating compounds by introducing foreign ***,a LiTaO3grain boundary（GB） coating and bulk Ti-doping have been successfully achieved in LiNi0.834Co0.11Mn0.056O2cathode by thermodynamic guidance,in which the structural formation energy and interfacial binding energy are employed to predict the elemental diffusion discrepancy and thermodynamically stable coating *** to the coupling effect of strengthened structural/interfacial stability and improved Li+diffusion kinetics by simultaneous bulk/GB engineering,the Ta/Ti-NCM cathode exhibits outstanding capacity retention,reaching 91.1% after 400 cycles at 1 *** elaborate work contributes valuable insights into rational dual-modification engineering from a thermodynamic perspective for maximizing the electrochemical performances of NCM cathodes.

关键词： Bulk doping Dual-modification Grain boundary coating Ni-rich layered cathode Thermodynamic perspective

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Significant contribution of carbonyls to atmospheric oxidation capacity(AOC)during the winter haze pollution over North China Plain

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Journal of environmental Sciences 2024年第5期139卷 377-388页

作者： Xue Yang Gen Zhang Guang Pan Guolan Fan Houyong Zhang Xuan Ge Mingyue Du school of municipal and environmental engineering Shandong Jianzhu UniversityJi’nan 250101China State Key Laboratory of Severe Weather&Key Laboratory of Atmospheric Chemistry of China Meteorological Administration Chinese Academy of Meteorological SciencesBeijing 100081China Shandong Jinan Ecological environment Monitoring Center Ji’nan 250101China

Atmospheric carbonyl compounds play significant roles in the cycling of radicals and have exhibited surprisingly high levels in winter that were well correlated to particulate matter,for which the reason have not been clearly *** we measured carbonyl compounds and other trace gasses together with PM_(2.5)over urban Jinan in North China Plain during the *** higher carbonyl concentrations(average:14.63±4.21 ppbv)were found during wintertime haze pollution,about one to three-times relative to those on nonhaze days,with slight difference in chemical composition except formaldehyde(HCHO).HCHO(3.68 ppbv),acetone(3.17 ppbv),and acetaldehyde(CH_3CHO)(2.83 ppbv)were the three most abundant species,accounting for~75% of the total carbonylson both haze and non-haze *** from observational-based model(OBM)with atmospheric oxidation capacity(AOC)indicated that AOC significantly increased with the increasing carbonyls during the winter haze *** photolysis have supplied key oxidants such as RO_(2) and HO_(2),and thereby enhancing the formation of fine particles and secondary organic aerosols,elucidating the observed haze-carbonyls *** variation with carbonyls exhibiting peak values at early-noon and night highlighted the combined contribution of both secondary formation and primary diesel-fuel sources.1-butene was further confirmed to be the major precursor for *** study confirms the great contribution of carbonyls to AOC,and also suggests that reducing the emissions of carbonyls would be an effective way to mitigate haze pollution in urban area of the NCP region.

关键词： Carbonyls Haze Observation-based model Source apportionment Atmospheric oxidation capacity

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