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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 140-143页

作者： Yanjin Wang Xiaopeng Chang Hongge Tao Zhenfeng Wang quanguo zhang College of Environment Economics Henan Finance UniversityZhengzhou 450046China College of Mechanical and Electrical Engineering Henan Agricultural UniversityZhengzhou 450002China

Thiobacillus ferrooxidans,abbreviated as *** is one of the important microorganisms in the field of biological *** of ferrous iron and sulfur-containing substrates on biological desulfurization of *** were *** show that in the absence of Fe^(2+),*** can utilize three kinds of sulfur-containing substrates of Na_(2)S_(2)O_(3),elemental S and Na_(2)SO_(3) for growth and *** utilization complexity,Na_(2)S_(2)O_(3) was easiest to use,next was elemental S,and Na_(2)SO_(3) was the worst for *** the utilization of ferrous iron and sulfur-containing substrates by ***,the iron oxidation system was first *** the decrease of the Fe^(2+)concentration,the sulfur oxidation system was started,and then the two systems synergistically *** presence of three sulfur-containing substrates had different effects on Fe^(2+)oxidation,and elemental S did not inhibit the oxidation of Fe^(2+),while Na_(2)S_(2)O_(3) and Na_(2)SO_(3) had some inhibition on the oxidation of Fe^(2+),especially the inhibition of Na_(2)SO_(3) was significant,and complete oxidation of ferrous iron needed more *** isolated *** is applied to the removal of H2S gas,aiming to provide a new technological approach for biological removal of H2S.

关键词： Thiobacillus ferrooxidans ferrous iron sulfur-containing substrate biological desulfurization

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镁硅改性烟秆炭吸附特性和能力研究

河南农业大学学报 2024年第3期58卷 467-476页

作者：胡泽森岳建芝王慷张志萍荆艳艳张全国河南农业大学农业农村部可再生能源新材料与装备重点试验室河南郑州450002 黄河科技学院现代农业工程研究院河南郑州450006

【目的】研究镁硅改性烟秆炭吸附特性和能力,解决水体中过量的氮和磷造成的水体富营养化,并实现废弃生物质烟草秸秆的资源化利用。【方法】将烟草秸秆通过热解制备烟秆生物炭,再由MgCl 2和Na 2 SiO 3对其浸渍改性,用于吸附水体中的氮、... 详细信息

【目的】研究镁硅改性烟秆炭吸附特性和能力,解决水体中过量的氮和磷造成的水体富营养化,并实现废弃生物质烟草秸秆的资源化利用。【方法】将烟草秸秆通过热解制备烟秆生物炭,再由MgCl 2和Na 2 SiO 3对其浸渍改性,用于吸附水体中的氮、磷并研究其吸附特性。【结果】改性后烟秆炭对氮和磷的吸附量分别为4.26和37.93 mg·g-1,分别是改性前的5和11.6倍;改性后烟秆炭镁、硅含量分别是改性前的26.5和4.5倍;烟秆炭的BET测定结果表明,改性提高了烟秆炭的比表面积和平均孔径,孔隙结构更加发达;改性后的烟秆炭出现新的衍射峰,改性引入了新的表面官能团。改性烟秆炭在中性或弱碱性环境下对氮具有较高的吸附能力,吸附磷的pH值范围相对较宽。改性烟秆炭对氮和磷的吸附过程分别符合颗粒内扩散和准二级动力学方程,吸附方式主要为化学吸附;吸附类型均符合Langmuir模型,为单分子层吸附;改性烟秆炭在双溶质溶液中对氮、磷的吸附量相比在单溶质溶液中有显著提升,说明氮和磷在水中共存时对烟秆炭吸附产生协同作用。【结论】镁硅改性烟秆生物炭可以高效去除水体中的氮和磷,是一种高效除氮磷吸附剂。

关键词：氮磷烟秆炭改性吸附

Drying characteristics of biological porous media during convective drying

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International Journal of Agricultural and Biological Engineering 2016年第5期9卷 194-207页

作者： Wang Huilin Lu Tao zhang quanguo College of Energy and Power Engineering Zhengzhou University of Light IndustryZhengzhou 450002China School of Mechanical and Electrical Engineering Beijing University of Chemical TechnologyBeijing 100029China College of Mechanical and Electrical Engineering Henan Agricultural UniversityZhengzhou 450002China

Experiments with potatoes were carried out in order to analyze the variation of the temperature and the mean dry basis moisture content over time,the effect of the drying conditions on the drying rate,and the relationship between deformation and dry basis moisture content.A two-way sequentially coupled thermo-hydro-mechanical math model was developed on the basis of Fickian diffusion theory,Fourier’s law of heat conduction and thermoelasticity mechanics in order to analyze the spatio-temporal distributions of moisture,temperature and drying stresses in the *** transient mathematical model,composed of a system of partial differential equations,was solved by finite difference *** numerical results obtained by using the mathematical model were in good agreement with the experimental *** variations in temperature and moisture distributions,drying curves and stresses within potatoes over time were simulated,and the ways in which these are affected by the drying conditions were *** work could help in developing an understanding of the relationship between mass and heat transfer,shrinkage,stress,and physical degradation of biological materials.

关键词： heat and mass transfer deformable porous media THM coupling mathematical modeling

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沥滤预处理的棉秆-高灰煤共气化特性研究

热科学与技术 2024年第1期23卷 1-8页

作者：胡建军杨攀博赵淑蘅张全国刘荣厚黄振河南农业大学机电工程学院河南郑州450000 上海交通大学生物学院上海200240 中国科学院广州能源所广东广州510640

生物质与煤的固在碱金属是生物质与煤炭共气化过程中的重要影响因素。以含不同形态的碱金属的棉秆(cotton stalk, CS)和高灰煤(high as coal, HAC)为研究对象,采用自制的固定床研究其共气化过程中的气体产量与主要组分变化规律以及两者... 详细信息

生物质与煤的固在碱金属是生物质与煤炭共气化过程中的重要影响因素。以含不同形态的碱金属的棉秆(cotton stalk, CS)和高灰煤(high as coal, HAC)为研究对象,采用自制的固定床研究其共气化过程中的气体产量与主要组分变化规律以及两者之间的相互作用,以揭示两种原料中不同形态的碱金属对共气化的影响。结果表明:随着沥滤脱灰程度的提高,棉秆与高灰煤的产气量得到不同程度的提高。对棉秆与高灰煤交叉组合共气化,发现棉秆气化在共气化过程中起到主导作用。原样棉秆与高灰煤共气化协同效应系数最高,为1.15,水沥滤秸秆与水沥滤煤的共气化产气量最高,为1 428.00 mL/g。酸沥滤后的棉秆对共气化气体组分有较大的影响,表现为H_(2)与CO_(2)组分占比降低,CO与CH_(4)组分占比升高。

关键词：沥滤棉秆高灰煤共气化交叉组合

CFD modeling and experiment of heat transfer in a tubular photo-bioreactor for photo-fermentation bio-hydrogen production

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International Journal of Agricultural and Biological Engineering 2017年第1期10卷 209-217页

作者： zhang Zhiping zhang quanguo Yue Jianzhi Li Lianhao zhang Tian Liu Zhengbai Key Laboratory of New Materials and Facilities for Rural Renewable Energy Ministry of AgricultureCollege of Mechanical&Electrical engineeringHenan Agricultural UniversityZhengzhou 450002China Collaborative Innovation Center of Biomass Energy Zhengzhou 450002China

Temperature is one of the most important parameters that need to be controlled in photo-fermentation bio-hydrogen production(PFHP)*** the high temperature and big temperature fluctuation have adverse impacts on bio-hydrogen yield,the system numerical simulation based on the operating conditions and environmental factors is *** research focused on the investigation of heat transfer properties of the PFHP *** hydrolysate from agricultural residues was taken as substrate,and up-flow tubular photo-bioreactor was adopted for *** inside the photo-bioreactor were *** experimental design and computational modeling for the determination of the heat transfer behavior in tubular photo-bioreactor was *** balance analysis was conducted to determine the energy efficiency,and optimize the operation parameters in order to obtain higher energy *** commercial software FLUENT was also adopted in order to predict the transient temperature distribution in the *** results showed that mathematical and computational modeling method has a clear potential for improving the performance of photo-bioreactor in the process of ***-flow tubular bioreactor has tiny temperature fluctuant,and is suitable for PFHP.

关键词： photo-fermentation bio-hydrogen production(PFHP) up-flow tubular photo-bioreactor heat transfer temperature distribution numerical simulation

Temperature variation of reaction liquid of ultrafine corn stover in photosynthetic hydrogen production

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International Journal of Agricultural and Biological Engineering 2014年第5期7卷 78-84页

作者： zhang quanguo Wang Yingkuan Hu Jianjun Guo Jie zhang Zhiping Jing Yanyan Xu Guangyin Wang Yi Henan Agricultural University Key Laboratory of New Materials and Facilities for Rural Renewable Energy(Ministry of Agriculture)Zhengzhou 450002China Chinese Academy of Agricultural Engineering Beijing 100125China

The thermo-physical phenomena existing in the process of hydrogen production by photosynthetic bacteria with ultrafine corn stover directly affect the energy consumption of biological hydrogen production system,the activity of hydrogen production,and hydrogen production *** order to discover theoretical basis for optimizing process parameters of the photosynthetic bioreactor for ultrafine corn stover,experimental investigation was conducted to identify the effects of the granularity of ultrafine corn stover on the temperature variation using a self-developed photosynthetic bio-hydrogen thermal-effect experimental *** paper describes experimental research on temperature variation of reaction liquid with ultrafine-ground corn stover in photosynthetic hydrogen production,and on the temperature field and change trend of reaction liquid of corn stover with different granularities in bio-hydrogen *** results showed that,the greater the granularity of corn stover,the slower the temperature rising speed of the reaction liquid with corn stover in the initial phase of photosynthetic hydrogen production,and the lower the relative average temperature of reaction liquid in photosynthetic hydrogen *** result is of great significance in research on the photosynthetic hydrogen production technology from biomass,providing a theoretical basis for thermal effect in solar photosynthetic hydrogen production.

关键词： corn stover photosynthetic hydrogen production ultrafine grinding bioreactor granularity temperature

Mapping QTL for flowering time-related traits under three plant densities in maize

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The Crop Journal 2021年第2期9卷 372-379页

作者： Liwei Wang Zhiqiang Zhou Ronggai Li Jianfeng Weng quanguo zhang Xinghua Li Baoqiang Wang Wenying zhang Wei Song Xinhai Li The Key Laboratory of Crop Genetics and Breeding of Hebei Province Institute of Cereal and Oil CropsHebei Academy of Agriculture and Forestry SciencesShijiazhuang 050035HebeiChina Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China

Flowering time is an indicator of adaptation in maize and a key trait for selection in *** genetic basis of flowering time in maize,especially in response to plant density,remains *** objective of this study was to identify maize quantitative trait loci(QTL)associated with flowering time-related traits that are stably expressed under several plant densities and show additive effects that vary with plant *** hundred recombinant inbred lines(RIL)derived from a cross between Ye 478 and Qi 319,together with their parents,were planted at three plant densities(90,000,120,000,and 150,000 plants ha^(-1))in four *** five traits investigated were days to tasseling(DTT),days to silking(DTS),days to pollen shed(DTP),interval between anthesis and silking(ASI),and interval between tasseling and anthesis(TAI).A high-resolution bin map was used for QTL *** the RIL population,the DTT,DTS,and DTP values increased with plant density,whereas the ASI and TAI values showed negligible response to plant density.A total of 72 QTL were identified for flowering time-related traits,including 15 stably expressed across *** flowering time under different densities seems to be regulated by complex pathways rather than by several major genes or an independent *** effects of some stable QTL,especially qDTT8-1 and qDTT10-4,varied with plant *** mapping and cloning of these QTL will shed light on the mechanism of flowering time and assist in breeding earlymaturing maize inbred lines and hybrids.

关键词： Maize Flowering time Plant density Recombinant inbred lines(RIL) Genetic basis

Heterointerface engineering of rhombic Rh nanosheets confined on MXene for efficient methanol oxidation

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Journal of Energy Chemistry 2024年第6期93卷 419-428,I0011页

作者： Qi zhang quanguo Jiang Xiang Yang Chi zhang Jian zhang Lu Yang Haiyan He Guobing Ying Huajie Huang College of Materials Science and Engineering Hohai UniversityNanjing 210098JiangsuChina New Energy Technology Engineering Lab of Jiangsu Province College of ScienceNanjing University of Posts&Telecommunications(NUPT)Nanjing 210023JiangsuChina School of Materials Science and Engineering Southeast UniversityNanjing 211100JiangsuChina

Although metallic rhodium(Rh)is regarded as a promising platinum-alternative anode catalyst of direct methanol fuel cell(DMFC),the conventional"particle-to-face"contact model between Rh and matrix largely limits the overall electrocatalytic performance due to their insufficient cooperative ***,we report a controllable and robust heterointerface engineering strategy for the bottom-up fabrication of rhombic Rh nanosheets in situ confined on Ti_3C_(2)T_x MXene nanolamellas(Rh NS/MXene)via a convenient stereoassembly *** unique design concept gives the resulting 2D/2D Rh NS/MXene heterostructure intriguing textural features,including large accessible surface areas,strong"face-toface"interfacial interactions,homogeneous Rh nanosheet distribution,ameliorative electronic structure,and high electronic *** a consequence,the as-prepared Rh NS/MXene nanoarchitectures exhibit exceptional electrocatalytic methanol oxidation properties in terms of a large electrochemically active surface area of 126.2 m~2 g_(Rh)~(-1),a high mass activity of 1056.9 mA mg_(Rh)-~1,and a long service life,which significantly outperform those of conventional particle-shaped Rh catalysts supported by carbon black,carbon nanotubes,reduced graphene oxide,and MXene matrixes as well as the commercial Pt nanoparticle/carbon black and Pd nanoparticle/carbon black catalysts with the same noble metal loading *** functional theory calculations further demonstrate that the direct electronic interaction at the well-contacted 2D/2D heterointerfaces effectively enhances the adsorption energy of Rh nanosheets and induces a left shift of the d-band center,thereby making the Rh NS/MXene configuration suffer less from CO *** work highlights the importance of rational heterointerface design in the construction of advanced noble metal/MXene electrocatalysts,which may provide new avenues for developing the next-generation DMFC devices.

关键词： Rhodium nanosheet Ti_(3)C_(2)T_(x)MXene Heterointerface Electrocatalyst Fuel cell

The Nonexistence of Global Solutions for a Time Fractional Schrodinger Equation with Nonlinear Memory

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Journal of Applied Mathematics and Physics 2018年第7期6卷 1418-1424页

作者： Yaning Li quanguo zhang College of Mathematics&Statistics Nanjing University of Information Science&TechnologyNanjingChina Department of Mathematics Luoyang Normal UniversityLuoyangHenanChina

In this paper, we study the nonexistence of solutions of the following time fractional nonlinear Schr?dinger equations with nonlinear memory where 0, ιλ denotes the principal value of ιλ, p>1, T>0, λ∈C/{0}, u(t,x) is a complex-value function, denotes left Riemann-Liouville fractional integrals of order 1-λ and is the Caputo fractional derivative of order . We obtain that the problem admits no global weak solution when and under different conditions for initial data.

关键词： Fractional Schrodinger Equation Nonexistence Cauchy Problems Nonlinear Memory

Design and preliminary experimental research on a new biogas fermentation system by solar heat pipe heating

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International Journal of Agricultural and Biological Engineering 2016年第2期9卷 153-162页

作者： Jiao Youzhou Li Pengfei Li Gang zhang quanguo Ding Pan Wang Shaopeng Gao Zan Du Shuangli He Chao Key Laboratory of New Materials and Facilities for Rural Renewable Energy Ministry of AgricultureCollege of Mechanical&Electrical engineeringHenan Agricultural UniversityZhengzhou 450002China Collaborative Innovation Center of Biomass Energy Henan ProvinceZhengzhou 450002China

Biogas fermentation requires appropriate temperature,while the biogas fermentation can be affected by the low ambient temperature in *** order to overcome the negative effects of low temperature fermentation,a new type of solar heat pipe biogas fermentation heating system was designed and a preliminary experiment research on this system was conducted using cow manure as the raw material at 6%concentration and total fermentation volume of 175 *** experimental results showed that when the system was in normal operation,the fermentation temperature rose every day by *** gradient will gradually become smaller with the increase of fermentation liquid temperature,and the temperature can reach 38°C after *** this solar heat pipe heating system,the fermentation liquid temperature can be increased by 5°C every sunny *** solar heat pipe heating system plays a significant role in biogas *** results of economic analysis show that the system can realize the fermentation at constant temperatures of 25°C and 35°C respectively,and it can also save standard coal equivalent of 40 kg and 80 kg in winter and spring,respectively.

关键词： Biogas fermentation solar heat pipe heating system fermentation temperature economic analysis