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Study on Coconut Shell Activated Carbon Temperature Swing Adsorption of Benzene and Formaldehyde

Journal of Renewable Materials 2022年第12期10卷 3573-3585页

作者： Zhiguang Yang Gaojun Yan Xueping Liu Zhengyuan Feng Xinfeng Zhu Yanli Mao Songtao Chen Zhisheng Yu Ruimei Fan Linlin Shan Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology Henan University of Urban ConstructionPingdingshan467036China College of Resources and Environment University of Chinese Academy of SciencesBeijing100085China College of Basic Medical Sciences Xinxiang Medical UniversityXinxiang 453003China

Adsorption can be used to recover effectively the volatile organic gases(VOCs)in the exhaust gas from factories through using an appropriate adsorption *** to form a physical or chemical bond,adsorption occurs between the porous solid medium and the liquid or gas multi component fluid *** regeneration capa-city of the adsorbent is as important as the adsorption capacity and it determines the economics of the adsorption *** regeneration of adsorbent can be realized through changing the pressure or temperature of the ***,activated carbon samples from coconut shell were prepared and *** or formal-dehyde in the mixed air was used as the adsorption object,and the adsorption experiment was carried out in a U-shaped *** how adsorption was affected by activated carbon type,adsorbate and *** results show that oxidation modifed activated carbon can increase the adsorption effect of form aldehyde,but will reduce the ad sorption effect of benzene,because their ad sorption mechanism is *** 30℃,the saturated adsorption apacity of AC-0 for benzene is 437.0 mg/*** that of AC-1 for formaldehyde is 670.5 mg/*** the experimental range,it is found that the adsorption capacity increases with the decrease of temperature,and their changes are very consistent with the ftted ExpDecay1 function.

关键词： Activated carbon adsorption benzene formaldehyde oxidation modification

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A variable fuzzy set model for assessment of water ecological civilization for a city in china 12

A variable fuzzy set model for assessment of water ecologica...

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Uncertainty Modelling in Knowledge Engineering and Decision Making - 12th International Fuzzy Logic and Intelligent Technologies in Nuclear Science Conference, FLINS 2016

作者： Yuankun, Wang Dong, Sheng Dong, Wang Key Laboratory of Surficial Geochemistry Ministry of Education Department of Hydrosciences School of Earth Sciences and Engineering State Key Laboratory of Pollution Control and Resource Reuse Nanjing University Nanjing210023 China Hunan Water Resources and Hydropower Research Institute Changsha410007 China

ISBN: (纸本)9789813146969

The assessment system for water ecological civilization city is suggested, including a rule layer with 5 factors and an index layer with 19 defined indexes based on the connotation of water ecological civilization. Assessment model is developed based on the variable fuzzy set, which reasonably identifies the relative membership degree and function of simple index and standard interval of each level. Taking Zhuzhou city, China, as an example of comprehensive evaluation of water ecological civilization, the results show that the proposed model can rationally determine ecological civilization grade considering all related indicators. The eco-civilization of water in Zhuzhou city is in a low level: non-harmonious. The results of this paper could provide scientific references for city water management and environment protection. © 2016 by World Scientific Publishing Co. Pte. Ltd.

关键词： Decision making

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Comparison of the meat quality and fatty acid profile of muscles in finishing Xiangcun Black pigs fed varied dietary energy levels

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Animal Nutrition 2022年第4期11卷 15-24页

作者： Can Yang Wenlong Wang Xiaowu Tang Ruilin Huang Fengna Li Wenxuan Su Yulong Yin Chaoyue Wen Jian Liu College of Life Sciences and Environment Hunan Provincial Key Laboratory of Biological Resources Protection and Utilization in Nanyue Mountain AreaHengyang Normal UniversityHengyangHunan 421008China Key Laboratory of Agro-ecological Processes in Subtropical Region National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of ScienceChangsh1Hunan 410125China Hunan International Joint Laboratory of Animal Intestinal Ecology and Health Hunan Normal UniversityChangshaHunan 410081China College of Bioengineering Hunan Vocational Technical College of Environment and BiologyHengyangHunan 421005China Key Laboratory of Animal Feed and Nutrition of Zhejiang Province College of Animal SciencesZhejiang UniversityHangzhou 310058China Xiangcun High-technology Agricultural Co.LTD LoudiHunan 417000China

To study the effects of dietary energy level on the meat quality of different muscles in finishing pigs,400Xiangcun Black pigs(BW=79.55±4.77 kg)were randomly assigned to 5 treatments with varied calculated digestive energy(DE)at 3,050,3,100,3,150,3,200 and 3,250 kcal/kg,*** treatment had 8replicates with 10 pigs per *** quality,amino acid and fatty acid composition were tested in this *** differences in average daily gain,average daily feed intake or feed-to-gain ratio(P>0.05)were observed among dietary *** concentrations of longissimus dorsi(LD)muscle in DE3150was higher than those in other groups(P<0.05).The crude fat concentration of biceps femoris(BF)muscle in DE3250 tended to be higher than that in DE3150 and DE3100 groups(P<0.05).Pigs in DE3250 and DE3200 had higher fiber density and smaller cross-sectional area of BF muscle than those in DE3150(P<0.05).Pigs in DE3150 had the highest Cu concentration in LD muscle compared with those in DE3200,DE3250(P<0.05).The C16:1 proportion of LD muscle was lower(P<0.01)and C20:1 was higher(P<0.05)in DE3050 than that in the other dietary *** C18:3n6 and C20:3n6 proportions of BF muscle in DE3150 were higher than those in DE 3050,DE3200 and DE3250(P<0.05).For LD muscle,m RNA expressions of type I and IIa MyHC in group DE3150 were higher than other treatments(P<0.01).The LD muscle in DE3150 expressed higher PPARd than in other groups(P<0.01).Pigs in DE3100 expressed higher FOX1 than in DE3200 and DE3250(P<0.05).Sterol-regulatory element binding proteins(SREBPa)mRNA expression decreased linearly when dietary energy level increased in BF muscle(P<0.01).In conclusion,a200 kcal/kg decrease in digestible energy for 4 consecutive weeks did not affect growth performance of Xiangcun Black ***,LD and BF muscle respond differently to dietary energy level,and meat quality was improved by the medium energy level during the finishing phase.

关键词： Energy Growth performance Fatty acid Myofibrillar morphology Muscle

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Ecological vulnerability assessment of Minjiang River in the Yangtze River Basin, China 6th

Ecological vulnerability assessment of Minjiang River in the...

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6th International Conference on Risk Analysis and Crisis Response, RACR 2017

作者： Wang, Yuankun Wang, Dong Sheng, Dong State Key Laboratory of Pollution Control and Resource Reuse Nanjing University Nanjing China Department of Hydro-Sciences School of Earth Sciences and Engineering Nanjing China Hunan Water Resources and Hydropower Research Institute Changsha China

ISBN: (纸本)9781138033597

A new assessment model for river ecological vulnerability is developed based on the Variable Fuzzy Theory on the basis of river eco-environment characteristics. The model is applied to assess ecological vulnerability of Minjiang River in the Yangtze River Basin, China. Results show that the proposed model rationally determines ecological vulner-ability level. We hope this study could provide a scientific reference for environment manage-ment in Yangtze River Basin. © 2017 Taylor & Francis Group, London.

关键词： Rivers

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Synergy from the Stepped Hollow FeHCFe Nanocubes and the Dimorphic Polypyrrole for High-Performance Electrochemical Water Desalination

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Angewandte Chemie 2025年

作者： Yu Liu Kunyue Luo Prof. Wenle Xing Wenjun Yin Jing Feng Shuaishuai Pi Zixiao Kang Prof. Jie Liang Prof. Lin Tang Prof. Wangwang Tang College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education) Hunan University Changsha 410082 China These authors contribute equally to this article. School of Resources and Environment Hunan University of Technology and Business Changsha 410205 China PowerChina Zhongnan Engineering Corporation Limited Changsha 410014 China CCCC Third Harbor Consultants Co. Ltd. Shanghai 200032 China

Saline water desalination serves as an important route to increase freshwater supply, while capacitive deionization (CDI) has emerged as a promising technique to tackle this issue. To boost the successful application of CDI, development of advanced electrode materials is vital. Herein, we innovatively designed and synthesized a sophisticated Prussian blue/dimorphic polypyrrole composite for the hybrid CDI (HCDI). Specifically, the nanoparticle-like polypyrrole (PPy) in situ distributed on the surface of stepped hollow FeHCFe nanocubes, while the coexisting nanotube-like PPy interconnected the discrete stepped hollow FeHCFe nanocubes. The introduction of PPy nanoparticles/nanotubes promoted both electron and ion dynamics, and improved the electrochemical activity of FeHCFe. Meanwhile, the FeHCFe nanocubes with concave stepwise architecture on each side offered large accessible contact area for electrolyte, reduced Na + migration path, improved tolerance for lattice expansion, and optimized redox sites for Na + storage. Through such unique structural design and synergistic combination, the FeHCFe/PPy with appropriate component ratio achieved a remarkable desalination capacity and a fast desalination rate along with excellent cycling performance, outperforming other related materials. Moreover, the treated solution can meet the drinking water standard within 6 min via the use of six tandem HCDI cells. Density functional theory (DFT) revealed the mechanism of Na + capture process and provided a fundamental understanding of the rapid Na + migration and large Na + storage capability. This study provides insights into ration design of superior electrode materials for high-performance electrochemical water desalination.

关键词： water desalination capacitive deionization polypyrrole nanoparticles and nanotubes stepped hollow prussian blue synergistic effect

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Structural changes of a bacteriophage upon DNA packaging and maturation

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Protein & Cell 2020年第5期11卷 374-379页

作者： Wenyuan Chen Hao Xiao Xurong Wang Shuanglin Song Zhen Han Xiaowu Li Fan Yang Li Wang Jingdong Song Hongrong Liu Lingpeng Cheng Key Laboratory for Matter Microstructure and Function of Hunan Province Key Laboratory of Low-dimensional Quantum Structures and Quantum ControlSchool of Physics and ElectronicsHunan Normal UniversityChangsha 410081China State Key Laboratory for Infectious Disease Prevention and Control National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 100052China Technology Center for Protein Sciences School of Life SciencesTsinghua UniversityBeijing 100084China State Key Laboratory of Microbial Resources Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China

Dear Editor,Tailed,double-stranded DNA(dsDNA)bacteriophages,which belong to the order of Caudovirales,have a tail attached to a pentameric vertex of the icosahedral capsid shell(head)through a 12-fold portal(Johnson and Chiu,2007).The phages package genomic dsDNA into a round procapsid using the portal in complex with an ATP-dependent terminase complex as the *** packaging,the procapsid shell expands to a more angular intermediate to match the size of the viral genome(Guo et al.,2014).When the phage head is full,the portal detects internal pressure and conveys a signal from the inner capsid to the exterior,which triggers a sequence of events-the terminase complex cleaving mature DNA genome from a multi-genome concatemer,the release of the terminase complex from the portal,and the attachment of the tail complex-in the completion of phage assembly(Lander et al.,2006;Johnson and Chiu,2007).At the beginning of phage infection,the tail is responsible for receptor recognition,and the portal and tail act as a tunnel for DNA delivery into the host cytoplasm(Johnson and Chiu,2007).These mechanisms of DNA packaging and ejection may also be conserved in many other DNA viruses,including herpesvirus(Wang et al.,2020;Yang et al.,2020).

关键词： attached packaging maturation

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Metal-center effect induced efficient charge transfer of metal-organic framework for strengthening Sb(Ⅴ)capture performance

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Nano Research 2022年第9期15卷 8516-8523页

作者： Deng You Hui Shi Mingming Peng Liming Yang Penghui Shao Kai Yin Haozhi Wang Shenglian Luo Xubiao Luo State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan UniversityChangsha 410082China Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource utilization Nanchang Hangkong UniversityNanchang 330063China Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) School of Materials Science and EngineeringTianjin UniversityTianjin 300072China

The adsorbents–adsorbates interaction is critical for resourcelization in heavy metal wastewater ***,it is still indistinct to depict the impact of metal center effect on heavy metals removal performance in metal-organic frameworks(MOFs)-based ***,a series of MOFs with different metal centers of Mg(II),La(III),and Zr(IV)are rationally designed,and the effect of electronic structure on the Sb(V)removal performance is systematically *** obtained La-MGs achieve Sb(V)adsorption capacity of 897.6 mg/g,which is about 1.2 and 4.5 times above average than those of Zr-MGs and Mg-MGs,*** account of more edge adsorption sites achieve,the sites utilization efficiency of La-MGs(92.1%)is much better than Zr-MGs(75.0%)and Mg-MGs(20.4%).Furthermore,density functional theory(DFT)calculations reveal that La-MGs are more active than Mg-MGs and Zr-MGs,owing to the lower adsorption energy,higher charge transfer,and stronger bonding interaction,which will promote the Sb(V)removal *** experimental results in practical water indicate that La-MGs effectively capture antimony at low concentration,reaching drinking water standard in samples from Ganjiang *** study opens an avenue for atomic-level insight into high-efficient absorbents design for water treatment from electronic structuremodification of active centers.

关键词： metal-organic frameworks metal center effect electronic structure theoretical calculation Sb(V)removal

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Design of copper oxide and oxygen codoped graphitic carbon nitride activator for efficient radical and nonradical activation of peroxymonosulfate

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Chinese Chemical Letters 2023年第6期34卷 184-190页

作者： Lin Wei Jialing Li Chengyun Zhou Biao Song Fanzhi Qin Wenjun Wang Hanzhuo Luo Deyu Qin Cheng Huang Chen Zhang Yang Yang College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution ControlMinistry of Education(Hunan University)Changsha 410082China School of Design Hunan UniversityChangsha 410082China School of Resources and Environment Hunan University of Technology and BusinessChangsha 410205China Department of Chemical and Materials Engineering University of AlbertaEdmontonAlberta T6G 1H9Canada

Rational regulation of stable graphitic carbon nitride(CN)for superior peroxymonosulfate(PMS)activation is important in the catalytic degradation of water *** this work,the copper oxide and oxygen co-doped graphitic carbon nitride(Cu O/O-CN)was prepared via one-step synthesis and applied in activating PMS for oxytetracycline(OTC)degradation,displaying superior catalytic *** characterization and theoretical calculations indicated that the synergistic effect between the oxygen site of CN and CuO can modulate the electronic structure of the whole composite further facilitating the formation of non-radical^(1)O_(2)and various reactive *** of the influencing factor experiments revealed that CuO/O-CN has a strong resistance to the environmental *** degradation efficiency of OTC in the real water environment even exceeded that in the deionized *** four successive runs of the optimal catalyst,the OTC removal rate was still as high as 91.3%.This work developed a high-efficiency PMS activator to remove refractory pollutants via both radical pathway and non-radical pathway,which showed a promising potential in the treatment of wastewaters.

关键词： Graphitic carbon nitride Codoping Peroxymonosulfate Antibiotics Advanced oxidation process

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The study of migration velocity of Cs-135 and Se-79 in intact rock 2

The study of migration velocity of Cs-135 and Se-79 in intac...

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2019 2nd International Conference on Manufacturing technology, Materials and Chemical Engineering, MTMCE 2019

作者： Ling, H. Chen, L. Chen, W.M. Yun, L. Beijing Research Institute of Uranium Geology CNNC Beijing100029 China Hunan Provincial Key Laboratory of Pollution Control and Resources Technology University of South China Hengyang421001 China

The migration characteristics of highly mobile nuclides in natural barrier are the key concerns in the long-term safety assessment of geological disposal facilities. This paper focused on typical granite in Beishan area for geological disposal of high-level radioactive waste, and established a computational model for the release and migrate of nuclides after closure of repository by GoldSim. The migration characteristics of Cs-135 and Se-79 were analyzed by Monte Carlo stochastic simulation. The results show that the migration characteristics of Cs-135 and Se-79 in intact rock are direct influenced by hydraulic conductivity and hydraulic gradient, the migration velocity are 2.47×10-4m/a and 9.61×10-4m/a when the hydraulic conductivity correspond to 5.74 ×10-9 m/s. The analysis of the results shows that the migration characteristics can provide feedback guidance for the site selection and design of the disposal repository. © Published under licence by IOP Publishing Ltd.

关键词： Stochastic systems

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Intrauterine growth restriction alters growth performance, plasma hormones,and small intestinal microbial communities in growing-finishing pigs

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Journal of Animal Science and Biotechnology 2021年第1期12卷 340-357页

作者： Liang Xiong Jinming You Wanghong Zhang Qian Zhu Francois Blachier Yulong Yin Xiangfeng Kong CAS Key Laboratory of Agro-ecological Processes in Subtropical Regions Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125HunanChina Key Laboratory of Animal Nutrition in Jiangxi Province College of Animal Science and TechnologyJiangxi Agricultural UniversityNanchang 440000JiangxiChina UniversitéParis-Saclay AgroParisTechINRAEUMR PNCA75005 ParisFrance.

Background: The interaction of the gut microbiota with key metabolic and physiological processes may be associated with poor growth outcomes in animals born with intrauterine growth restriction(IUGR).Results: Growth performance, plasma hormone concentrations, and intestinal microbiota composition were analyzed in IUGR pigs and in normal birth weight(NBW) pigs when the NBW pigs reached 25, 50, and 100 kg of body weight(BW). Compared to NBW pigs, IUGR pigs had lower initial, weaned, and final BW, and lower average daily gain and average daily feed intake in all the considered time points. In the 25 kg BW group, IUGR pigs had higher concentrations of plasma ghrelin and pancreatic polypeptide(PP), but lower insulin concentration than NBW pigs, while the situation was reversed in the 50 kg BW group. As compared to NBW pigs, IUGR pigs had higher microbial alpha diversity in the jejunum and ileum;in the 50 and 100 kg BW groups, IUGR pigs had higher Firmicutes abundance but lower Proteobacteria abundance in the jejunum, and lower Lactobacillus abundance in the jejunum and ileum;in the 25 kg BW group, IUGR pigs showed higher unclassified Ruminococcaceae abundance in the ileum;and in 25 and 50 kg BW groups, IUGR pigs showed lower Ochrobactrum abundance in the ***'s correlation revealed that Lactobacillus was negatively correlated with growth performance, while unclassified Ruminococcaceae was positively correlated. Predictive metagenomic analysis detected significantly different expression of genes in the intestinal microbiota between IUGR and NBW pigs, suggesting different metabolic capabilities between the two ***: Growing-finishing IUGR pigs showed lower growth performance, higher microbial alpha diversity, and differences in plasma hormone concentrations compared to NBW pigs. Alterations in the abundance of Firmicutes,Proteobacteria, Ruminococcaceae, Lactobacillus, and Ochrobactrum in the small intestine may be associated with IUGR, and may the

关键词： Growing-finishing pigs Growth performance Intrauterine growth restriction Microbial community Small intestine

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