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How to promote cooperative innovation in environmentally friendly technology:a case of agricultural biotechnology in China
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作者 Hongkun Ma Xian Mi +5 位作者 Yi Zheng Ning Lv Shan Zhang Chunting Hu Xiaowei Wu Yuan Cao 《Chinese Journal of Population,Resources and Environment》 2024年第2期127-135,共9页
This study explored the factors influencing cooperative innovation in environmentally friendly agricultural biotechnology in China.First,we constructed an evolutionary game model comprising the factors of net income o... This study explored the factors influencing cooperative innovation in environmentally friendly agricultural biotechnology in China.First,we constructed an evolutionary game model comprising the factors of net income of cooperative innovation,net income of independent innovation,market constraints,and government subsidies.Using MATLAB simulation,we assigned different values to the aforementioned variables to explore the evolutionary trend of innovators’willingness to cooperate.Results showed that when the values of net income of cooperative innovation,net income of independent innovation,market constraints,and government subsidies exceeded the threshold,innovators’willingness to cooperate was significantly enhanced.Furthermore,the proportion of innovators who cooperated with others gradually increased to 100%;otherwise,it gradually decreased to 0%.Comparing the simulation curve with the real evolution curve of cooperative innovation in agricultural biotechnology in China,we found that the gradual decline in the willingness to cooperate could be due to insufficient subsidies for cooperative innovation,low income from cooperative innovation,weak profitability of innovators,and weak market constraints. 展开更多
关键词 Cooperative innovation Evolutionary game MATLAB Simulation Agricultural biotechnology environmentally friendly technology
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Preparation of Phase Change Concrete Using Environmentally FriendlyMaterials and Its Performance Study
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作者 Yunfeng Li Cheng Zhao Qianqian Lu 《Journal of Renewable Materials》 SCIE EI 2023年第5期2417-2431,共15页
The control of carbon emissions and energy conservation,and environmental protection are hot spots of global concern.In this paper,phase change paraffin wax is applied to porous materials for adsorption and storage,an... The control of carbon emissions and energy conservation,and environmental protection are hot spots of global concern.In this paper,phase change paraffin wax is applied to porous materials for adsorption and storage,and nature’s eco-friendly materials are selected as the porous matrix to propose an eco-friendly phase change concrete using eco-friendly materials as raw materials.It was obtained that the strength of the phase change concrete utilizing environmentally friendly materials was 25.4%to 36.8%lower than that of ordinary concrete,while some of the phase change light aggregates were found to produce slip damage with the cement paste in the damage study.By constructing a small-sized test room for thermal properties,we obtained a phase change concrete that utilizes environmentally friendly materials to control the temperature better than the commonly studied phase change concrete,with a peak temperature drop of up to 2.6℃ in the phase change test room compared to the normal test room and a delay in the peak temperature. 展开更多
关键词 environmentally friendly PCM concrete environmentally friendly materials mechanical properties thermal properties
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Synthesis and mechanism of environmentally friendly high temperature and high salt resistant lubricants
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作者 Zong-Lun Wang Jin-Sheng Sun +6 位作者 Jing-Ping Liu Kai-He Lv Zi-Hua Shao Xian-Fa Zhang Zhe Xu Zhi-Wen Dai Ning Huang 《Petroleum Science》 SCIE EI CSCD 2023年第5期3110-3118,共9页
With the exploration and development of deep and ultra-deep oil and gas,high torque and high friction during the drilling of deep and ultra-deep wells become one of the key issues affecting drilling safety and drillin... With the exploration and development of deep and ultra-deep oil and gas,high torque and high friction during the drilling of deep and ultra-deep wells become one of the key issues affecting drilling safety and drilling speed.Meanwhile,the high temperature and high salt problem in deep formations is prominent,which poses a major challenge to the lubricity of drilling fluids under high temperature and high salt.This paper reports an organic borate ester SOP as an environmentally friendly drilling fluid lubricant.The performance evaluation results show that when 1%lubricant SOP is added to the fresh water-based mud,the lubrication coefficient decreases from 0.631 to 0.046,and the reduction rate of lubrication coefficient is 92.7%.Under the conditions of 210℃ and 30%NaCl,the reduction rate of lubricating coefficient of the base slurry with 1%SOP was still remain 81.5%.After adding 1%SOP,the wear volume decreased by 94.11%compared with the base slurry.The contact resistance experiment during the friction process shows that SOP can form a thick adsorption film on the friction surface under high temperature and high salt conditions,thus effectively reducing the friction resistance.Molecular dynamics simulation shows that lubricant SOP can be physically adsorbed on the surface of drilling tool and borehole wall through hydrogen bond and van der Waals force.XPS analysis further shows that SOP adsorbs on the friction surface and reacts with metal atoms on the friction surface to form a chemically reactive film.Therefore,under high temperature and high salt conditions,the synergistic effect of physical adsorption film and chemical reaction film effectively reduces the frictional resistance and wear of the friction surface.In addition,SOP is non-toxic and easy to degrade.Therefore,SOP is a highly effective and environmentally friendly lubricant in high temperature and high salt drilling fluid. 展开更多
关键词 Deep oil and gas LUBRICANT environmentally friendly Water-based drilling fluid Molecular dynamics simulations
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Water-Based Environmentally Friendly Pesticide Formulations Based on Cyclodextrin/Pesticide Loading System
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作者 Xinyu Guo Zhe Sun +5 位作者 Rui Zhao Hongyi Shang Jiangyu Liu Yong Xu Laihua Liu Xuemin Wu 《Journal of Renewable Materials》 SCIE EI 2023年第2期777-789,共13页
Difenoconazole(DIF)is a representative variety of broad-spectrum triazole fungicides and liposoluble pesticides.However,the water solubility of DIF is so poor that its application is limited in plant protection.In add... Difenoconazole(DIF)is a representative variety of broad-spectrum triazole fungicides and liposoluble pesticides.However,the water solubility of DIF is so poor that its application is limited in plant protection.In addition,the conventional formulations of DIF always contain abundant organic solvents,which may cause pollution of the environment.In this study,two DIF/cyclodextrins(CDs)inclusion complexes(ICs)were successfully prepared,which were DIF/β-CD IC and DIF/hydroxypropyl-β-CD IC(DIF/HP-β-CD IC).The effect of cyclodextrins on the water solubility and the antifungal effect of liposoluble DIF pesticide were investigated.According to the phase solubility test,the molar ratio and apparent stability constant of ICs were obtained.Fourier transform infrared spectroscopy,thermal gravity analysis,X-ray diffraction and scanning electron microscopy were used systematically to characterize the formation and characteristics of ICs.The results noted that DIF successfully entered the cavities of two CDs.In addition,the antifungal effect test proved the better performance of DIF/HP-β-CD IC,which exceeded that of DIF emulsifiable concentrate.Therefore,our study provides informative direction for the intelligent use of liposoluble pesticides with cyclodextrins to develop water-based environmentally friendly formulations. 展开更多
关键词 Water-based environmentally friendly pesticide formulations DIFENOCONAZOLE Β-CYCLODEXTRIN HYDROXYPROPYL-Β-CYCLODEXTRIN inclusion complex preparation characterization
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Anodizing of AZ91D magnesium alloy using environmental friendly alkaline borate-biphthalate electrolyte 被引量:4
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作者 刘妍 杨富巍 +1 位作者 卫中领 张昭 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第7期1778-1785,共8页
A kind of environmental friendly anodizing routine for AZ91D magnesium alloy,based on an alkaline borate-potassium acid phthalate(KAP) electrolyte,was studied.The effect of KAP on the properties of the anodized film... A kind of environmental friendly anodizing routine for AZ91D magnesium alloy,based on an alkaline borate-potassium acid phthalate(KAP) electrolyte,was studied.The effect of KAP on the properties of the anodized film was investigated by scanning electron microscopy(SEM),X-ray diffraction(XRD),energy dispersive spectrometry(EDS),potentiodynamic polarization and electrochemical impedance spectroscopy(EIS),respectively.The results showed that the anodizing process,surface morphology,thickness,phase structure and corrosion resistance of the anodized film were strongly dependent on the concentration of KAP.In the presence of adequate KAP,a compact and smooth anodized film with excellent corrosion resistance was obtained. 展开更多
关键词 ANODIZING magnesium alloy potassium acid phthalate environmental friendly electrolyte corrosion performance
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Synthesis of propylene glycol ethers from propylene oxide catalyzed by environmentally friendly ionic liquids 被引量:4
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作者 Cong Zhao Shengxin Chen +4 位作者 Ruirui Zhang Zihang Li Ruixia Liu Baozeng Ren Suojiang Zhang 《Chinese Journal of Catalysis》 EI CSCD 北大核心 2017年第5期879-889,共11页
A series of acetate ionic liquids were synthesized using a typical two‐step method.The ionic liquids were used as environmentally benign catalysts in the production of propylene glycol ethers from propylene oxide and... A series of acetate ionic liquids were synthesized using a typical two‐step method.The ionic liquids were used as environmentally benign catalysts in the production of propylene glycol ethers from propylene oxide and alcohols under mild conditions.The basic strengths of the ionic liquids were evaluated by determination of their Hammett functions,obtained using ultraviolet‐visible spectroscopy,and the relationship between their catalytic activities and basicities was established.The catalytic efficiencies of the ionic liquids were higher than that of the traditional basic catalyst NaOH.This can be attributed to the involvement of a novel reaction mechanism when these ionic liquids are used.A possible electrophilic‐nucleophilic dual activation mechanism was proposed and confirmed using electrospray ionization quadrupole time‐of‐flight mass spectrometry.In addition,the effects of significant reaction parameters such as concentration of catalyst,molar ratio of alcohol to propylene oxide,reaction temperature,and steric hindrance of the alcohol were investigated in detail. 展开更多
关键词 Ionic liquid Propylene glycol ether ETHERIFICATION Propylene oxide Basic strength Reaction mechanism environmental friendly
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Synthesis and Kinetics of Hydrogenated Rosin Dodecyl Ester as an Environmentally Friendly Plasticizer 被引量:3
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作者 Qiaoguang Li Sheng Gong +4 位作者 Jie Yan Hongchao Hu Xugang Shu Hanqing Tong Zhiye Cai 《Journal of Renewable Materials》 SCIE EI 2020年第3期289-300,共12页
The plasticizer is an important polymer material additive.Non-toxic and environmentally friendly plasticizers are developed recently in order to decrease fossil fuel reserves,serious environmental pollution and the to... The plasticizer is an important polymer material additive.Non-toxic and environmentally friendly plasticizers are developed recently in order to decrease fossil fuel reserves,serious environmental pollution and the toxicity of phthalate esters.In this study,a new,efficient and environmentally friendly plasticizer of hydrogenated rosin dodecyl ester was prepared by an esterification reaction of hydrogenated rosin and dodecanol.The influences of different reaction conditions(including different catalysts,the catalyst concentration,the ratio of the reactants,reaction temperature,and reaction time)on the esterification yield are examined and discussed.Hydrogenated rosin dodecyl ester with 71.8%yield was synthesized under the optimized reaction conditions(1:0.8 molar ratio of rosin to dodecanol,1 mol%tetrabutyl titanate concentration,and 210℃for 6 h).The esterification reaction is a second-order reaction,and kinetic calculations showed that the activation energy is 39.77 KJ·mol^(−1).The structure of the hydrogenated rosin dodecyl ester was confirmed by FT-IR spectroscopy and^(13)C NMR spectrum.Besides,the thermal stability of target product(hydrogenated rosin dodecyl ester)was also tested by thermal gravimetric analysis(TGA),which showed a good thermal stability. 展开更多
关键词 environmentally friendly plasticizer hydrogenated rosin dodecyl ester SYNTHESIS kinetics study
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Notoginsenoside as an environmentally friendly shale inhibitor in water-based drilling fluid 被引量:2
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作者 Jin-Sheng Sun Zong-Lun Wang +6 位作者 Jing-Ping Liu Kai-He Lv Fan Zhang Zi-Hua Shao Xiao-Dong Dong Zhi-Wen Dai Xian-Fa Zhang 《Petroleum Science》 SCIE CAS CSCD 2022年第2期608-618,共11页
The demand for non-toxic and biodegradable shale inhibitors is growing in the drilling industry.In this paper,the effect of notoginsenoside(NS)as a new,environmentally friendly inhibitor of shale hydration is systemat... The demand for non-toxic and biodegradable shale inhibitors is growing in the drilling industry.In this paper,the effect of notoginsenoside(NS)as a new,environmentally friendly inhibitor of shale hydration is systematically studied for the first time.The inhibition performance of NS was evaluated via inhibition evaluation tests,including mud ball immersion tests,linear expansion tests,shale rolling recovery tests,and compressive strength tests.The inhibition mechanism of NS was analyzed using Fourier transform infrared spectroscopy(FTIR),contact angle measurements,particle size distribution determination,thermogravimetric analysis(TGA),and scanning electron microscopy(SEM).The experimental results demonstrate that NS is able to adhere to the clay surface,forming a hydrophobic film that prevents the entry of water molecules and inhibiting the hydration dispersion of the clay.Because of this,NS can maintain the original state of bentonite pellets in water,which can effectively reduce the swelling rate of bentonite,increase the recovery rate of shale drill cuttings,maintain the strength of the shale,and therefore maintain the stability of the borehole wall during drilling.In addition,NS is non-toxic,degradable,and compatible with water-based drilling fluids.The above advantages make NS a promising candidate for use as an environmentally friendly shale inhibitor. 展开更多
关键词 Notoginsenoside Shale inhibition environmentally friendly Water-based drilling fluid Inhibition mechanism
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Numerical Investigations on Supercritical Heat Transfer Characteristics of Environmental Friendly Refrigerants 被引量:1
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作者 Adnan Ibrahim Peng Hu +5 位作者 Yiran Jiang Ali Riaz Farrukh Saleem Yifang Dong Lei Jia Panpan Zhao 《International Journal of Clean Coal and Energy》 2021年第2期21-40,共20页
The heat transfer of supercritical fluids is a vastly growing field, specifically to find suitable alternatives to replace conventional R134a, which can be beneficial for climate change. Most of the experimental and n... The heat transfer of supercritical fluids is a vastly growing field, specifically to find suitable alternatives to replace conventional R134a, which can be beneficial for climate change. Most of the experimental and numerical investigations have been conducted to explore supercritical water, carbon dioxide and R134a as heat transfer working fluids. Hydrofluoroolefin (HFO) and refrigerants blends have been considered the most environment-friendly refrigerants to replace Chlorofluorocarbons (CFCs), Hydrochlorofluoro-carbons (HCFCs) and Hydrofluorocarbons (HFCs). Their main advantage of zero Ozone Depletion Potential (ODP) and comparatively lower Global Warming Potential (GWP) have attracted growing amount of attention to mitigate environmental issues. This work adopts the computational method and takes the environmentally friendly refrigerants to investigate the heat transfer characteristics under widely used shear-stress transport (SST) model. A comprehensive comparison was performed at reduced pressure of 1.10 for supercritical fluids R515A, R1234ze(E) and R134a. The peaks of heat transfer coefficient occurred in the vicinity of pseudo critical temperature for all of these considered fluids;however, R134a resulted in higher heat transfer coefficient, Reynolds number and Prandtl number in comparison with R515A and R1234ze(E). The higher heat transfer coefficient of supercritical fluid R134a is owing to its thermophysical properties and the specific heat plays crucial role in the heat transfer of supercritical fluids. Owing to environmental issues, R515A can be a considerable replacement of R134a. R1234ze(E) is also promising alternative to R134a;however, safety issues should thoroughly concern its mild flammable characteristics. 展开更多
关键词 Heat Transfer Supercritical Fluids Simulations R515A R1234ze(E) environmental friendly Refrigerants
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Research and Application of an Environmental-Friendly Low-Damage and High Salt-Resistance Slick Water Fracturing Fluid System 被引量:2
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作者 Qingwen Zeng Peng Fu +3 位作者 Lei Meng Hua Shi Hong Zhou Weichu Yu 《Open Journal of Yangtze Oil and Gas》 2020年第3期131-143,共13页
The Sulige gas field is a typical low-pressure low-permeability tight sandstone gas reservoir. The reservoir has poor seepage capacity, strong heterogeneity, high mineralization of formation water and extremely scarce... The Sulige gas field is a typical low-pressure low-permeability tight sandstone gas reservoir. The reservoir has poor seepage capacity, strong heterogeneity, high mineralization of formation water and extremely scarce water resources on the site. These unfavorable factors have brought great difficulties to the on-site mining process. Now, a nano-composite green environmental protection slick water fracturing fluid system CQFR can be quickly dissolved because of the larger specific surface area, and the small molecular size makes the damage to the reservoir less than 5%, and the average drag reduction effect can reach more than 73%. It can quickly and well dissolve and maintain performance under high salinity conditions and fracturing flowback fluids. It responds well to the complex reservoir conditions on the construction site and makes the flowback fluid recyable, which greatly reduces the consumption of water resources on the construction site and effectively improves the construction efficiency and economic benefits. 展开更多
关键词 Tight Sandstone Recyclable Backwater Green environmentally friendly Low-Damage High Salt-Resistance Slick Water
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Synthesis of 3-(1-Cyclohexenyl)-2-butanone via Environmentally Friendly Catalysts
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作者 ZHAO Zhen-hua 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2003年第3期350-354,共5页
We substituted several environmentally friendly catalysts which included HY and H- β zeolites, various cation-exchanged β zeolites, and solid-supported ferric chloride for conventional catalysts for the synth... We substituted several environmentally friendly catalysts which included HY and H- β zeolites, various cation-exchanged β zeolites, and solid-supported ferric chloride for conventional catalysts for the synthesis of 3-(1-cyclohexenyl)-2-butanone from the reaction of ethylidenecyclohexane with acetic anhydride at room temperature. HY zeolite was found to be the most effective for this reaction, and gave the acylated product in a 72% yield under the conditions of n (ethylidenecyclohexane)/ n (acetic anhydride)/ m (HY zeolite)=1 mmol/10 mmol/0 100 g, reaction temperature 25 ℃ and reaction time 2 h. The used HY zeolite can be recovered, regenerated and gave almost the same yield as the fresh one. The lifetime of the HY zeolite is over 80 h. The effect of different factors on the reaction has also been investigated. 展开更多
关键词 ACYLATION ZEOLITE environmentally friendly catalyst 3-(1-Cyclohexenyl)-2-butanone Ethylidenecyclohexane Acetic anhydride Synthesis
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Development of Environmentally Friendly and Energy Efficient Refrigerants for Refrigeration Systems
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作者 Piyanut Saengsikhiao Juntakan Taweekun +2 位作者 Kittinan Maliwan Somchai Sae-ung Thanansak Theppaya 《Energy Engineering》 EI 2021年第2期411-433,共23页
This paper presents the improvement of eco-friendly and power consumption saving refrigerants for refrigeration systems.The novel azeotropic refrigerant mixtures of HFCs and HCs can replace refrigeration systems,and u... This paper presents the improvement of eco-friendly and power consumption saving refrigerants for refrigeration systems.The novel azeotropic refrigerant mixtures of HFCs and HCs can replace refrigeration systems,and using the R134,R32,R125,and R1270 refrigerants in several compositions found using the decision tree function of the RapidMiner software(which camefirst in the KDnuggets annual software poll).All refrigerant results are mixed of POE,which is A1 classification refrigerant,non-flammable,and innocuous refrigerant,and using REFPROP software and CYCLE_D-HX software are under the CAN/ANSI/AHRI540 standards.The boiling point of the new refrigerant mix R-No.595 is 4.58%,lower than that of R404A,with a higher refrigerant effect and 50.34%lower GWP value than R404A.The proposed mix R-No.595 can be operated in hot environmental country and has high critical temperature and heat-rejection effects,due to the presence of R32 and R1270.The COPc of R463A is 13.49%,higher than R404A in freeze condition.The novel refrigerant mixes provide alternate refrig-erant options mixed of 1%R1270,and which are related with the development of current refrigerants,containing a compose of HFOs and eco refrigerants for producing low-GWP,zero ODP,high-refrigerant effect,low-operating pressure,and innocuous refrigerants. 展开更多
关键词 REFRIGERANT refrigeration system energy efficiency environmentally friendly data mining
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Analysis of the Environment-friendly Synthesis Approach and Technology Based on CO_2 Instead of the Organic Carbon Sources in Coal and Oil
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作者 SHEN Fa-zhi 《Meteorological and Environmental Research》 CAS 2012年第7期31-34,共4页
The ways and technology of synthesis of alcohol, ether, ester, amine ester, lactone, polyester, carbamide and diamond based on CO2 were explored. Using CO2 as potential organic carbon resources not only solves environ... The ways and technology of synthesis of alcohol, ether, ester, amine ester, lactone, polyester, carbamide and diamond based on CO2 were explored. Using CO2 as potential organic carbon resources not only solves environmental problem, but also eases shortage of resources. 展开更多
关键词 Carbon dioxide Organic synthesis environmental friendly China
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Sustainable Development of Agriculture and Animal Husbandry in Tibet Based on "Resource Saving and Environment Friendly"
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作者 Zhang Huaguo 《Meteorological and Environmental Research》 CAS 2018年第3期98-100,共3页
During the "13th five-year" period,Tibet is building a well-off society in an all-round way and constructing a harmonious socialist new countryside. The pace of economic construction in the west is advanced step by ... During the "13th five-year" period,Tibet is building a well-off society in an all-round way and constructing a harmonious socialist new countryside. The pace of economic construction in the west is advanced step by step,and all kinds of economic construction subjects show obvious increasing trend. As one of the regions with rich agriculture and animal husbandry resources,it is inevitable to face the problems that wild resources are gradually consumed,and environmental pollution is severe in Tibet. While developing the economy,it must not damage the environment. To a certain extent,the resource and environment infrastructure is the material basis for economic development. With the gradual progress of economic construction,improvement of residents' living standards,and updating of consumption structure,it needs to build,produce and live in the environment of " beautiful Tibet with clean water,blue sky and green". In this paper,based on resource-saving and environment-friendly angle,it sufficiently understands the importance and urgency of accelerating sustainable development of agriculture and animal husbandry in Tibet from the global and strategic heights. It should accelerate Tibet agriculture and animal husbandry taking " resource-saving and environment-friendly",put the sustainable development of agriculture and animal husbandry in an important historical development opportunity,and impel large economic development of plateau agriculture and animal husbandry. 展开更多
关键词 Resource saving environment friendly Sustainable development Agriculture and animal husbandry
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Research on the development of resource of zinc leaching residue process and the implementation of the environment friendly system
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作者 Da Sun Mao-lin Li Rui Cui 《International Journal of Technology Management》 2017年第4期50-52,共3页
In this paper, we conduct research on the development trend of Zinc leaching residue and the construction of environment friendly system. To further strengthen concentration degree of the chemical industry, improve th... In this paper, we conduct research on the development trend of Zinc leaching residue and the construction of environment friendly system. To further strengthen concentration degree of the chemical industry, improve the production efficiency and utilization rate of emissions, realize the comprehensive utilization of energy development and the green development. In China' s zinc smelting industry, the use of most of the zinc smelting raw materials contain a small amount of the cobalt, zinc in the process of leaching into the zinc sulfate solution, as a harmful effect of the zinc impurities. For zinc sulfate leaching solution cobalt purification, most of the factories are using zinc powder replacement purification method, the output of the purification of zinc slag in the vast majority of zinc with small part of cadmium and a small amount of nickel, cobalt, copper, manganese and so on. This paper proposes the novel systematic method of the Zinc leaching residue re-use that will promote the further development of the green industry. 展开更多
关键词 environment friendly SYSTEM Development Trend of Zinc Leaching Residue.
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The ergonomic,environment friendly,greener,and scalable SlidyBike is especially for you
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《China's Foreign Trade》 2015年第5期21-,共1页
The Sliding Bike is a patented new product that perfectly combines bike functionality and mechanical principles.Our models before 2014 used only horizontal sliding mechanism,and they were awarded invention golden meda... The Sliding Bike is a patented new product that perfectly combines bike functionality and mechanical principles.Our models before 2014 used only horizontal sliding mechanism,and they were awarded invention golden medals in Seoul,Geneva,Pittsburgh,and Taipei,and the Japan GD 展开更多
关键词 The ergonomic environment friendly greener and scalable SlidyBike is especially for you
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Utilization of Basalt Saw Mud as a Spherical Porous Functional Aggregate for the Preparation of Ordinary Structure Concrete 被引量:1
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作者 周永祥 关青锋 +2 位作者 LENG Faguang WANG Jing LI Tianjun 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2024年第2期364-375,共12页
To promote the production and application of artificial aggregates,save natural sand resources and protect the ecological environment,we evaluated the feasibility of using spherical porous functional aggregates(SPFAs)... To promote the production and application of artificial aggregates,save natural sand resources and protect the ecological environment,we evaluated the feasibility of using spherical porous functional aggregates(SPFAs) formed by basalt saw mud under autoclave curing in ordinary structural concrete.In our work,two types of prewetted functional aggregates were taken as replacements for natural aggregates with different volume substitution rates(0%,5%,10%,15%,20%,25%,and 30%) in the preparation of ordinary structural concrete with water-to-binder ratios(W/B) of 0.48 and 0.33.The effects of the functional aggregate properties and content,W/B,and curing age on the fluidity,density,mechanical properties and autogenous shrinkage of ordinary concrete were analyzed.The experimental results showed that the density of concrete declined at a rate of not more than 5%,and the 28 d compressive strength could reach 31.0-68.2 MPa.Low W/B,long curing age and high-quality functional aggregates were conducive to enhancing the mechanical properties of SPFAs concrete.Through the rolling effects,SPFAs can optimize the particle gradation of aggregate systems and improve the fluidity of concrete,and the water stored inside SPFAs provides an internal curing effect,which prolongs the cement hydration process and considerably reduces the autogenous shrinkage of concrete.SPFAs exhibits high strength and high density,as well as being more cost-effective and ecological,and is expected to be widely employed in ordinary structural concrete. 展开更多
关键词 lightweight concrete civil concrete building basalt saw mud fly ash internal curing environmentally friendly
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Ten-Minute Synthesis of a New Redox-Active Aqueous Binder for Flame-Retardant Li-S Batteries
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作者 Tianpeng Zhang Borui Li +5 位作者 Zihui Song Wanyuan Jiang Siyang Liu Runyue Mao Xigao Jian Fangyuan Hu 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第2期48-57,共10页
As a critical role in battery systems,polymer binders have been shown to efficiently suppress the lithium polysulfide shuttling and accommodate volume changes in recent years.However,preparation processes and safety,a... As a critical role in battery systems,polymer binders have been shown to efficiently suppress the lithium polysulfide shuttling and accommodate volume changes in recent years.However,preparation processes and safety,as the key criterions for Li-S batteries'practical applications,still attract less attention.Herein,an aqueous multifunction binder(named PEI-TIC)is prepared via an easy and fast epoxy-amine ring-opening reaction(10 min),which can not only give the sulfur cathode a stable mechanical property,a strong chemical adsorption and catalytic conversion ability,but also a fire safety improvement.The Li-S batteries based on the PEI-TIC binder display a high discharge capacity(1297.8 mAh g^(-1)),superior rate performance(823.0 mAh g^(-1)at 2 C),and an ultralow capacity decay rate of 0.035%over more than 800 cycles.Even under 7.1 mg cm^(-2)S-loaded,the PEI-TIC electrode can also achieve a high areal capacity of 7.2 mA h g^(-1)and excellent cycling stability,confirming its application potential.Moreover,it is also noted that TG-FTIR test is performed for the first time to explore the flame-retardant mechanism of polymer binders.This work provides an economically and environmentally friendly binder for the practical application and inspires the exploration of the flame-retardant mechanism of all electrode components. 展开更多
关键词 3D cross-linked network environmentally friendly flame retardant Li-S batteries multifunction binder
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Engineering Solutions towards Cost-Effective Sustainable Environment and Living
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作者 Noor-E-Alam Ahmed 《Journal of Energy and Power Engineering》 2012年第2期155-167,共13页
One important area where the development of economically viable products can improve the quality and comfort of human existence is natural ventilation inside a building. Despite the wide distribution of air pollutant ... One important area where the development of economically viable products can improve the quality and comfort of human existence is natural ventilation inside a building. Despite the wide distribution of air pollutant sources, the concentration of indoor pollutants may be the dominant risk factor in relation to personal exposure, as most people spend an average of 87% and 6% of their time within enclosed rooms and vehicles, respectively. Under these circumstances, wind driven rotating ventilators, which use natural energy and are cheap to manufacture, install and maintain, can become very effective non-polluting means of alleviating the problems within enclosed spaces. The author has been pioneering design and performance studies of environment friendly products such as the rooftop ventilator for over a decade at the University of New South Wales in Australia. The purpose of this paper is to detail the basic working principles of this ventilator and the series of detailed experimental and numerical investigations that has been performed in the optimization of the rooftop ventilator in terms of performance with higher air mass extraction rate and improved safety in operation has been achieved. Findings from these studies have been incorporated in the design of ventilators that are now commercially produced and marketed throughout the world by CSR Edmonds Pry Ltd of Australia. The conduct and outcomes of these works form the basis of this keynote paper. 展开更多
关键词 Wind natural ventilation roof-top ventilator inlet air quality environment friendly.
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A purely green approach to low-cost mass production of zeolitic imidazolate frameworks 被引量:1
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作者 Hai Li Wan Chen +6 位作者 Bei Liu Mingke Yang Zixuan Huang Changyu Sun Chun Deng Dapeng Cao Guangjin Chen 《Green Energy & Environment》 SCIE EI CAS CSCD 2023年第3期775-784,共10页
Although zeolitic imidazolate frameworks(ZIFs)have bright prospects in wide fields like gas storage/separation,catalysis and medicine,etc.,their large-scale applications are bottlenecked by the absence of their low-co... Although zeolitic imidazolate frameworks(ZIFs)have bright prospects in wide fields like gas storage/separation,catalysis and medicine,etc.,their large-scale applications are bottlenecked by the absence of their low-cost commercial production technique.Here,we report an uncon ventional method suitable for environmentally friendly and low-cost mass-production of ZIFs.In this method,taking the synthesis of ZIF-8 as an example,ZnO was used instead of Zn(NO_(3))_(2) in traditional solvent synthesis methods and CO_(2) was introduced to dissolve ZnO in aqueous solution of 2-methylimidazole(HMeim)and form water soluble salt([ZnMeim]^(+)[MeimCOO]^(-))at room temperature.Then,by removing CO_(2) through heating or vacuuming,Meim-ions are produced and instantaneously assemble with[ZnMeim]^(+)s to generate ZIF-8 without any by product.Due to the absence of strong acid anions(such as NO^(-)_(3) and Cl^(-) et al.)in solution,the washing of filter cake required in the conventional approaches could be omitted and the filtrate containing only water and HMeim could be reused completely.This method is really green as no waste gas or liquid generates because CO_(2) and water could be recycled perfectly.It overcomes almost all bottlenecks occurred in commercial production of ZIF-8 when using traditional methods.A pilot plant was established for mass-production of ZIF-8 and hundreds kilograms of ZIF-8 was produced,which indicates that the new method is not only environmentally friendly but also low cost and commercial accessibility.It is expected that the new method would open an avenue for commercial applications of ZIFs. 展开更多
关键词 Zeolitic imidazolate frameworks Mass production Metal oxide Carbon dioxide environmentally friendly
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