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Roles of Bioenergy and Green Hydrogen in Large Scale Energy Storage for Carbon Neutrality

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Engineering 2023年第10期29卷 32-34页

作者： chunbao xu School of Energy and Environment City University of Hong KongHong Kong 999077China

*** of biomass and bioenergy in solar energy storage Biomass comprises plant-based material,for example,wood,microalgae,energy crops,and agro-forestry residues,as well as organic waste from industries,farms,and househ... 详细信息

关键词： crops energy Storage

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油菜播种机除尘式播量监测系统设计与试验

智慧农业（中英文） 2024年第3期6卷 107-117页

作者：李强余秋丽李浩鹏徐春保丁幼春华中农业大学工学院湖北武汉430070 农业农村部长江中下游农业装备重点实验室湖北武汉430070

[目的/意义]针对气送式油菜直播机作业过程中粉尘影响种子流检测性能、监测系统难以适应不同幅宽播种行数等问题,设计了一种油菜播种机除尘式播量监测系统。[方法]该监测系统由除尘式油菜种子流检测装置与播量监测终端构成,可通过改变... 详细信息

[目的/意义]针对气送式油菜直播机作业过程中粉尘影响种子流检测性能、监测系统难以适应不同幅宽播种行数等问题,设计了一种油菜播种机除尘式播量监测系统。[方法]该监测系统由除尘式油菜种子流检测装置与播量监测终端构成,可通过改变检测装置数量适配不同幅宽播种机。根据粉尘影响种子流检测结构机制,设计了防尘除尘机构。该机构通过透明防尘板将光电感应器件与导种管隔开,粉尘只附着在透明防尘板靠近导种管一侧,同时利用步进电机-丝杆机构使透明防尘板与除尘布产生相互摩擦实现对透明防尘板除尘。通过分析与试验确定透明防尘板尺寸、除尘启动阈值等关键参数。[结果和讨论]检测装置对比台架试验表明,在平均排种频率12.4~36.3 Hz、平均粉尘流量252~386 mg/s下,无防尘除尘检测装置在两个除尘周期后检测准确率不高于80.2%;有防尘除尘检测装置在单个除尘周期内平均检测准确率不低于93.6%,检测装置不会将粉尘误计。播量监测台架试验表明,在平均排种频率不高于37.6 Hz时,播量监测准确率不低于92.2%。田间播种试验表明,在2.8~4.6 km/h的油菜直播机正常作业速度下,田间排种频率为14.8~31.1 Hz时,播量监测准确率不低于93.1%。[结论]该油菜播量监测系统为气送式油菜直播机作业中粉尘影响下种子流精准检测提供了有效支持,提高了对不同宽幅播种行数的适应性。

关键词：油菜种子流检测播种除尘监测系统精准计数

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Hydrometallurgical detoxification and recycling of electric arc furnace dust

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International Journal of Minerals,Metallurgy and Materials 2023年第11期30卷 2076-2094页

作者： Yang xue Xiaoming Liu chunbao(Charles)xu Yonghui Han State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Department of Chemical&Biochemical Engineering Western UniversityLondonON N6A 5B9Canada Hebei Technology Innovation Centre of Solid Wastes Utilization Hebei University of Science and TechnologyShijiazhuang 050091China

Electric arc furnace dust(EAFD)is a hazardous waste but can also be a potential secondary resource for valuable metals,such as Zn and *** the increased awareness of carbon emission reduction,energy conservation,and environmental protection,hydrometallurgical technologies for the detoxification and resource use of EAFD have been developing *** work summarizes the generation mechanisms,compositions,and characteristics of EAFD and presents a critical review of various hydrometallurgical treatment methods for EAFD,e.g.,acid leaching,alkaline leaching,salt leaching,and pretreatment–enhanced leaching ***,the phase transformation mechanisms of zinc-containing components in acid and alkali solutions and pretreatment processes are ***,two novel combined methods,i.e.,oxygen pressure sulfuric acid leaching combined with composite catalyst preparation,and synergistic roasting of EAFD and municipal solid waste incineration fly ash combined with alkaline leaching,are proposed,which can provide future development directions to completely recycling EAFD by recovering valuable metals and using zinc residue.

关键词： hazardous waste recycling separation zinc hydrometallurgical technologies

Enhanced photocatalytic performance of iron oxides@HTCC fabricated from zinc extraction tailings for methylene blue degradation:Investigation of the photocatalytic mechanism

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International Journal of Minerals,Metallurgy and Materials 2023年第12期30卷 2364-2374页

作者： Yang xue Xiaoming Liu Na Zhang Yang Shao chunbao(Charles)xu State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes National Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of GeosciencesBeijing 100083China Department of Chemical&Biochemical Engineering Western UniversityLondonON N6A 5B9Canada

Photocatalytic processes are efficient methods to solve water contamination problems,especially considering dyeing wastewater ***,high-efficiency photocatalysts are usually very expensive and have the risk of heavy metal ***,an iron oxides@hydrothermal carbonation carbon(HTCC)heterogeneous catalyst was prepared by our group through co-hydrothermal treatment of carbohydrates and zinc extraction tailings of converter ***,the catalytic performance of the iron oxides@HTCC was verified by a nonbiodegradable dye,methylene blue(MB),and the catalytic mechanism was deduced from theoretical simulations and spectroscopic *** iron oxides@HTCC showed an excellent synergy between photocatalysis and Fenton-like *** visible-light illumination,the iron oxides@HTCC could be excited to generate electrons and holes,reacting with H_(2)O_(2)to produce·OH radicals to oxidize and decompose organic *** removal efficiency of methylene blue over iron oxides@HTCC at 140 min was 2.86 times that of *** enhanced catalytic performance was attributed to the advantages of iron oxides modification:(1)promoting the excitation induced by photons;(2)improving the charge ***,the iron oxides@HTCC showed high catalytic activity in a wide pH value range of 2.3-10.4,and the MB removal efficiency remained higher than 95% after the iron oxides@HTCC was recycled 4 *** magnetically recyclable iron oxides@HTCC may provide a solution for the treatment of wastewater from the textile industry.

关键词： photocatalysis photo-Fenton reaction methylene blue degradation tailings utilization

Electrospun porous carbon nanofibers derived from bio-based phenolic resins as free-standing electrodes for high-performance supercapacitors

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Frontiers of Chemical Science and Engineering 2023年第5期17卷 504-515页

作者： Yongsheng Zhang Xiaomeng Yang Jinpan Bao Hang Qian Dong Sui Jianshe Wang chunbao Charles xu Yanfang Huang School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China School of Chemistry and Chemical Engineering Luoyang Normal UniversityLuoyang 471934China Department of Chemical and Biochemical Engineering Western UniversityLondonN6A 3K7Canada

Phenolic resins were employed to prepare electrospun porous carbon nanofibers with a high specific surface area as free-standing electrodes for high-performance ***,the sustainable development of conventional phenolic resin has been challenged by petroleum-based phenol and *** with abundant phenolic hydroxyl groups is the main non-petroleum resource that can provide renewable aromatic ***,lignin,phenol,and furfural were used to synthesize bio-based phenolic resins,and the activated carbon nanofibers were obtained by electrospinning and one-step carbonization *** transform infrared and differential scanning calorimetry were used to characterize the structural and thermal *** results reveal that the apparent activation energy of the curing reaction is 89.21 kJ·mol–1 and the reaction order is *** activated carbon nanofibers show a uniform diameter,specific surface area up to 1100 m^(2)·g^(-1),and total pore volume of 0.62 cm^(3)·g^(-1).The electrode demonstrates a specific capacitance of 238 F·g^(-1)(0.1 A·g^(-1))and good rate *** symmetric supercapacitor yields a high energy density of 26.39 W·h·kg^(-1)at 100 W·kg^(-1)and an excellent capacitance retention of 98%after 10000 *** results confirm that the activated carbon nanofiber from bio-based phenolic resins can be applied as electrode material for high-performance supercapacitors.

关键词： lignin bio-based phenolic resins electrospinning activated carbon nanofibers supercapacitors

High-fructose corn syrup production and its new applications for 5-hydroxymethylfurfural and value-added furan derivatives:Promises and challenges

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Journal of Bioresources and Bioproducts 2022年第3期7卷 148-160页

作者： Aristide Laurel Mokale Kognou Sarita Shrestha Zihua Jiang chunbao(Charles)xu Fubao Sun Wensheng Qin Department of Biology Lakehead UniversityThunder Bay P7B 5E1Canada Department of Chemistry Lakehead UniversityThunder Bay P7B 5E1Canada Department of Chemical and Biochemical Engineering Western UniversityLondon N6A 5B9Canada School of Biotechnology Jiangnan UniversityWuxi 214122China

High fructose corn syrup has been industrially produced by converting glucose to fructose by glucose isomerases,tetrameric metalloenzymes widely used in industrial *** in enzyme engineering and commercial production of glucose isomerase have paved the way to explore more efficient variants of these *** 5-hydroxymethylfurfural can be produced from high fructose corn syrup catalytic dehydration,and it can be further converted into various furanic compounds chemically or biologically for various industrial applications as a promising platform *** the chemical conversion of 5-hydroxymethylfurfural into furanic compounds has been extensively investigated in recent years,bioconversion has shown promise for its mild conditions due to the harsh chemical reaction *** review discusses pro-tein engineering potential for improving glucose isomerase production and recent advancements in bioconversion of 5-hydroxymethylfurfural into value-added furanic *** suggests bi-ological strategies for the industrial transformation of 5-hydroxymethylfurfural.

关键词： High fructose corn syrup Glucose isomerase Rational enzyme engineering Directed evolution Furanic derivatives Biocatalysts

Plant-based meat analogues aggravated lipid accumulation by regulating lipid metabolism homeostasis in mice

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Food Science and Human Wellness 2024年第2期13卷 946-960页

作者： Yunting Xie Linlin Cai Zhiji Huang Kai Shan Xinglian xu Guanghong Zhou chunbao Li Key Laboratory of Meat Processing and Quality Control MOEKey Laboratory of Meat ProcessingMARAJiangsu Innovative Center of Meat ProductionProcessing and Quality ControlCollege of Food Science and TechnologyNanjing Agricultural UniversityNanjing 210095China

To determine the effects of plant-based meat analogues on the metabolic health and the possible mechanisms,mice were fed with a real pork diet(AP),a real beef diet(AB),a plant-based pork analogue diet(PP)and plant-based beef analogue diet(PB)for 68 *** with real meat,the plant-based meat analogues increased food and energy intake,body weight,white fat and liver weight and caused adipocyte hypertrophy,hepatic lipid droplet accumulation,and inflammatory responses in *** revealed that plantbased meat analogues altered the composition of serum metabolites,which regulated lipid metabolism *** PB diet upregulated gene expression related to lipid synthesis,lipolysis and adipocyte differentiation while the PP diet upregulated expression of lipolysis-related genes but downregulated expression of adipocyte differentiation-related genes in white adipose ***,both PP and PB diets upregulated lipid influx-and synthesis-related genes but downregulated lipid oxidation-related genes in *** specific metabolite biomarkers may affect fat accumulation mainly by direct lipid metabolism pathways or indirect amino acid metabolism,protein digestion and absorption,bile secretion,aminoacyl-tRNA biosynthesis,neuroactive ligand-receptor interaction and ABC transporters *** findings provide a new insight into understanding the differences in nutritional functions of meat and plant-based meat analogues.

关键词： Meat analogues Metabolomics Lipid metabolism Adipose tissue dysfunction Ectopic fat deposition

A Brief Overview of Low CO_2 Emission Technologies forIron and Steel Making

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Journal of Iron and Steel Research(International) 2010年第3期17卷 1-7页

作者： chunbao (Charles) xu CANG Da-qiang Department of Chemical Engineering Lakehead'.University Ontario P7B 5El Canada School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083 China

The global steel production has been growing for the last 50 years, from 200 Mt in 1950s to 1 240 Mt in 2006. Iron and steel making industry is one of the most energy-intensive industries, with an annual energy consumption of about 24 EJ, 5% of the world＇s total energy consumption. The steel industry accounts for 3%-4% of totat world greenhouse gas emissions. Enhancing energy efficiency and employing energy saving/recovering technologies such as coke dry quechning （CDQ） and top pressure recovery turbine （TRT） can be short-term approaches to the steel industry to reduce greenhouse gas emission. The long-term approaches to achieving a significant reduction in CO2 emissions from the steel industry would be through developing and applying CO2 breakthrough technologies for iron and steel making, and：through increasing use of renewable energy for iron and steel making. Thus, an overview of new CO2 breakthrough technologies for iron and steel making was made.

关键词： greenhouse gas emission CO2 reduction technology ironmaking steelrnaking

Characterization of glucose isomerase-producing bacteria and optimization of fermentation conditions for producing glucose isomerase using biomass

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Green Chemical Engineering 2023年第2期4卷 239-249页

作者： Aristide Laurel Mokale Kognou Chonlong Chio Janak Raj Khatiwada Sarita Shrestha xuantong Chen Hongwei Li Yuen Zhu Zi-Hua Jiang chunbao(Charles)xu Wensheng Qin Department of Biology Lakehead UniversityThunder BayONP7B 5E1Canada Department of Chemical and Biochemical Engineering Western UniversityLondonONN6A 5B9Canada School of Environment and Resources Shanxi UniversityTaiyuan030006China Department of Chemistry Lakehead UniversityThunder BayONP7B 5E1Canada

Glucose isomerase(GI)is an enzyme with high potential *** of GI producing bacteria with interesting properties from an industrial point of view is *** sp.,Paenarthrobacter sp.,Chryseobacterium sp.,Hymenobacter sp.,Mycobacterium sp.,and Stenotrophomonas *** isolated from soil *** of enzyme production yield was investigated in various fermentation conditions using response surface *** isolates exhibited maximum GI activity at 40℃,pH 6–8 after 4 days of incubation.A mixture of peptone/yeast extract or tryptone/peptone enhanced higher enzyme *** same trend was observed in fermentation medium containing 1%xylose or 2%–2.5%wheat *** study advanced the knowledge of these bacterial isolates in promoting wheat straw as feedstock for the bio-based industry.

关键词： Cellulolytic bacteria Glucose/xylose isomerase 16S rRNA Biomass conversion