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Life cycle assessment of pyrolysis process of Desmodesmus sp.

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International Journal of Agricultural and Biological Engineering 2015年第5期8卷 105-112页

作者： Li Gang Ji Fang zhou yuguang Dong Renjie College of Engineering/Biomass Engineering Center China Agricultural UniversityBeijing 100083China Key Laboratory of Clean Production and Utilization of Renewable Energy Ministry of AgricultureBeijing 100083China Chinese Academy of Agricultural Engineering Beijing 100125China

This paper described a comprehensive assessment of the pyrolysis process of 1 kg Desmodesmus *** in BG11 medium at the optimum temperature by using life cycle assessment *** assessment took 1 kg of Desmodesmus *** a functional unit,and chose energy efficiency analysis and potential environmental impact as assessment *** results showed that the energy conversion efficiency index of the pyrolysis process was above 1,which meant the pyrolysis process was *** primary impact of the pyrolysis process on the environment was eutrophication;which followed by photochemical ozone synthesis and acidification;and global warming impact was the *** overall environmental impact during the whole life cycle was 1347.63 mPET2000.

关键词： life cycle assessment(LCA) microalgae pyrolysis energy conversion efficiency environmental impact

基于文献计量学的玉米秸秆利用及关键共性技术分析

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农业工程学报 2024年第12期40卷 224-236页

作者：陈理赖有春陈帅宇马明旭周宇光韩毅冯欢欢郑永军中国农业大学工学院北京100083 农业农村部可再生能源清洁化利用技术重点实验室北京100083

为促进玉米秸秆全价值利用,该研究以中国知网(CNKI,China national knowledge infrastructure)数据库和Web of Science(WOS)核心数据库作为数据来源,利用知识图谱可视化软件,绘制玉米秸秆利用领域的知识图谱,以便全面了解玉米秸秆利用... 详细信息

为促进玉米秸秆全价值利用,该研究以中国知网(CNKI,China national knowledge infrastructure)数据库和Web of Science(WOS)核心数据库作为数据来源,利用知识图谱可视化软件,绘制玉米秸秆利用领域的知识图谱,以便全面了解玉米秸秆利用领域的研究现状和发展趋势,总结其面临的主要问题,并在此基础上深入挖掘分析玉米秸秆利用关键共性技术。玉米秸秆利用研究大致可分为1990—2007年及2008—2022年两个阶段。在后一阶段,各研究团队逐渐构成以肥料化、饲料化为主,燃料化为辅的玉米秸秆利用研究体系。经文献梳理发现,玉米秸秆利用研究大致经历了3次阶段性热点迁移,每次变化时长约为10a;中国玉米秸秆利用研究已取得较多成果,主要集中在秸秆还田和生物质能源生产方面;通过对知识图谱综合分析发现,玉米秸秆利用的热点方向包括生物质能源生产、土地改良和保护、畜牧业发展和饲料生产。最后,知识工程和归纳法分析结果表明,玉米秸秆利用技术仍存在收运不及时、还田质量低、秸秆制饲料技术不成熟、能源化技术成本高和附加值低等瓶颈。故在农业废弃物资源化利用这一国家重大需求驱动下,该文主要关注并分析了未来研究应重点聚焦的13项玉米秸秆全价值利用关键共性技术。该研究可为促进中国玉米秸秆全价值利用提供参考。

关键词：秸秆利用文献计量学 Web of Science 中国知网关键共性技术

Isolation of microalgae with growth restriction and nutrient removal from alkaline wastewater

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International Journal of Agricultural and Biological Engineering 2015年第6期8卷 62-68页

作者： Ji Fang Wang Yingkuan Li Gang zhou yuguang Dong Renjie College of Engineering/Biomass Engineering Center China Agricultural UniversityBeijing 100083China Key Laboratory of Clean Production and Utilization of Renewable Energy Ministry of AgricultureP.R.ChinaBeijing 100083China Chinese Academy of Agricultural Engineering Beijing 100125China

In order to isolate a well-tolerated microalgae strain and study its capability of wastewater treatment,a newly microalgae strain was isolated and identified from fresh *** phylogenetic analysis indicates that this strain has a close relationship with Desmodesmus sp.,named as EJ *** effects of temperature,pH value and NaCl concentration on growth of Desmondesmus *** investigated;the capability of nutrient removal from alkaline wastewater was also *** *** 9-2 had a wide pH adaptation range(3-12)and could remove nitrogen,phosphorus and COD which might substantially decrease the cost of biofuel *** research can provide evidence for outdoor large-scale cultivation of microalgae.

关键词： microalgae isolation growth restriction alkaline wastewater nutrient removal algae-based fuel wastewater treatment

Inventory analysis of carbon footprint on greenhouse gas emission of large-scale biogas plants

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International Journal of Agricultural and Biological Engineering 2016年第4期9卷 99-105页

作者： zhou yuguang Zhang Zongxi Zhang Yixiang zhou Jie Chen Li Yin Xuefeng Dong Renjie College of Engineering/Biomass Engineering Center China Agricultural UniversityBeijing 100083China Key Laboratory of Clean Production and Utilization of Renewable Energy Ministry of AgricultureP.R.ChinaBeijing 100083China College of Environment&Resources Inner Mongolia UniversityHuhhot 010021China

Inventory analysis of greenhouse gas emission for large-scale biogas plants using carbon footprint method still needs to be *** on the life cycle theory,the application of carbon footprint on four large-scale biogas plants was analyzed in this paper,which comprehensively considered project progresses of civil engineering construction,operation and comprehensive utilization of residues and *** the greenhouse gas emissions during the construction and waste removal stages were analyzed and *** carbon footprint of those plants was analyzed in different types and *** results showed that the larger scale plant will produce relatively lower carbon *** greenhouse gas emission of energy production,utilization during the period of anaerobic digestion accounted for more than 96%of the entire life cycle *** proportion of greenhouse gas emissions on equipment,demolition recycling and transportation phases was smaller,which was less than 1.5%and should be simplified in *** greenhouse gas emission of building materials production can be ignored.

关键词： biogas plant carbon footprint life cycle greenhouse gas emission reduction

Thermal cracking products and bio-oil production from microalgae Desmodesmus sp.

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International Journal of Agricultural and Biological Engineering 2017年第4期10卷 198-206页

作者： Li Gang Xiang Shunan Ji Fang zhou yuguang Huang Zhigang School of Material Science and Mechanical Engineering Beijing Technology and Business UniversityBeijing 100048China China Agricultural Machinery Testing Centre Beijing 100122China Chinese Academy of Agricultural Engineering Beijing 100125China College of Engineering China Agricultural UniversityBeijing 100083China Key Laboratory of Clean Production and Utilization of Renewable Energy Ministry of AgricultureBeijing 100083China

Qualitative and quantitative analyses of thermal cracking products from Desmodesmus *** performed based on pyrolysis-gas chromatography-mass spectrometry(Py-GC/MS)at different temperature regimes(350℃-750℃).After further analysis of a series of total ions chromatogram(TIC)and summarized,thermal cracking products of Desmodesmus *** different temperature regimes can be obtained,which mainly comprised of aliphatic hydrocarbons,nitrogen compounds,aromatic hydrocarbons,fatty acids,ketones,alcohols,aldehydes and furan *** to bio-oil production at 650℃(32.07%),Desmodesmus *** at 750℃could produce the highest bio-oil content of 42.25%.However,higher temperature could lead to the formation of contaminants(nitrogen compounds and PAHs)more ***,considering the higher content of bio-oil conversion and less pollutants generation,the optimum temperature for Desmodesmus *** cracking conversion was about 650℃.

关键词： microalgae Desmodesmus sp. thermal cracking bio-oil production pyrolysis

Assessment of pollutant emissions and energy efficiency of four commercialized charcoal stoves with modified Chinese cooking stove protocol

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International Journal of Agricultural and Biological Engineering 2018年第2期11卷 202-207页

作者： Yixiang Zhang Jiong Hao yuguang zhou Zongxi Zhang Li Chen Renjie Dong College of Engineering China Agricultural UniversityBeijing 100083China Key Laboratory of Clean Production and Utilization of Renewable Energy Ministry of AgricultureBeijing 100083China National Center for International Research of BioEnergy Science and Technology Ministry of Science and TechnologyBeijing 100083China

Charcoal stove is widely used in the developing countries especially in Africa and Central *** reported to have a high impact on human health,stoves promoted in the related areas still mainly focus on fuel saving and little knowledge was reported for the stove performance in the *** research evaluated four commercialized charcoal stoves with clay baseline stove using a modified Chinese cooking stove protocol that considered the local cooking habit to make the testing results more useful for the local stove *** results showed that the thermal efficiency of tested charcoal stoves ranged from 38.7%to 47.5%,and the cooking power was around 640-1200 *** CO emission factors of the improved stove had a 60%reduction compared with baseline *** indicators reporting the same aspect of the stove were evaluated,and it suggested choosing the indicators according to the project requirements.

关键词： charcoal stove energy efficiency pollutant emissions carbon dioxide emissions testing protocol cooking

Recommendations for green development of motor biofuel industry in China:A review

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International Journal of Agricultural and Biological Engineering 2020年第5期13卷 218-225页

作者： Zongxi Zhang Gang Li Yinghua Zhang Jiang Zhang Chuanzeng Song yuguang zhou School of Mechanical and Electronic Engineering Shandong Jianzhu UniversityJi’nan 250101China School of Artificial Intelligence Beijing Technology and Business UniversityBeijing 100048China Ji’nan Technician College Jinan 250115China Laboratory of Bioenergy and Environment Science&Technology College of EngineeringChina Agricultural UniversityBeijing 100083China Key Laboratory of Clean Production and Utilization of Renewable Energy Ministry of Agriculture and Rural AffairsBeijing 100083China National Center for International Research of BioEnergy Science and Technology Ministry of Science and TechnologyBeijing 100083China

Motor biofuel is one kind of clean and sustainable fuel extracted from living organisms or obtained by the transformation of organisms,which can be used to replace fossil ***,motor biofuel is an important direction for the development and utilization of renewable *** attention has been given to the development and promotion of motor biofuel and relative technologies all over the *** research introduced the history of motor biofuel,the classification of motor biofuel as well as the strategies and policies made domestically and internationally in order to promote the development of motor biofuel,and also pointed out some of the urgent problems faced during the development of motor biofuels and put forward some suggestions for the future development of motor biofuel in China.

关键词： green development motor biofuel biodiesel bioethanol emission renewable energy replacement

Analytical study on pyrolyzed products of Desmodesmus *** in BG11

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International Journal of Agricultural and Biological Engineering 2017年第3期10卷 218-226页

作者： Li Gang Ji Fang Xiang Shunan zhou yuguang Jiang Mengmeng Huang Zhigang School of Material Science and Mechanical Engineering Beijing Technology and Business UniversityBeijing 100048China Chinese Academy of Agricultural Engineering Beijing 100125China China Agricultural Machinery Testing Centre Beijing 100122China College of Engineering/National Center for International Research of BioEnergy Science and Technology China Agricultural UniversityBeijing 100083China Key Laboratory of Clean Production and Utilization of Renewable Energy Beijing 100083China

Pyrolysis-Gas Chromatography-Mass Spectrometry(Py-GC/MS)was adopted to determine the changes in component of BG11-cultivated Desmodesmus sp.(BG11/8-10)pyrolyzed products at different temperatures(300℃-800℃).The results of analysis on a series of total ions chromatogram(TIC)showed that pyrolyzed products of BG11/8-10 at different temperature mainly included aliphatic hydrocarbons,nitrogen compounds,aromatic hydrocarbons,fatty acids,ketones,alcohols,aldehydes and furan *** to the bio-oil(42.36%)generated by pyrolysis at 700℃,the relative content of bio-oil generated at 800℃was the highest up to 56.96%.However,higher temperature could easily cause the generation of large quantities of such pollutants as nitrogen compounds and polycyclic aromatic hydrocarbons(PAHs).Therefore,based on lower pollutant discharge and higher bio-oil yield,the optimal pyrolysis temperature of BG11/8-10 was around 700℃.

关键词： Desmodesmus sp. microalgae pyrolyzed products pyrolysis temperature bio-oil

Comparative study on thermal cracking characteristics and bio-oil production from different microalgae using Py-GC/MS

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International Journal of Agricultural and Biological Engineering 2019年第1期12卷 208-213页

作者： Gang Li Fang Ji Xue Bai yuguang zhou Renjie Dong Zhigang Huang College of Materials and Mechanical Engineering Beijing Technology and Business UniversityBeijing 100048China Chinese Academy of Agricultural Engineering Planning and Design Beijing 100125China Bioenergy and Environment Science&Technology Laboratory College of EngineeringChina Agricultural UniversityBeijing 100083China Key Laboratory of Clean Production and Utilization of Renewable Energy Ministry of AgricultureChinaBeijing 100083China National Center for International Research of BioEnergy Science and Technology Ministry of Science and TechnologyBeijing 100083China Yantai Institute China Agricultural UniversityYantai 264670China

The yield and chemical composition of pyrolysis products of Chlorella pyrenoidosa and Schizochytrium limacinum were determined using thermogravimetric analyzer(TGA)and pyrolysis-gas chromatographic mass spectrometry(Py-GC/MS)by varying the temperature *** further analysis of the total ion current(TIC)diagrams of Chlorella pyrenoidosa and Schizochytrium limacinum,it was concluded that both the pyrolysis products of each sample were mainly comprised of hydrocarbons,aromatics,fatty acids,nitrogen compounds,PAHs,phenols,etc,however,the relative content of each compound from Chlorella pyrenoidosa and Schizochytrium limacinum was *** pyrolysis of Chlorella pyrenoidosa and Schizochytrium limacinum at 350℃ produced a maximum yield of bio-oil production(44.32%and 60.99%);moreover,Chlorella pyrenoidosa could lead to more pollutants(nitrogen compounds and PAHs)release(2.71%)compared to that of Schizochytrium limacinum(0.7%).Considering the reasonable bio-oil production and minimum release of pollutants,Schizochytrium limacinum was found to be superior for producing biofuel against Chlorella pyrenoidosa.

关键词： microalgae Chlorella pyrenoidosa Schizochytrium limacinum bio-oil production thermal cracking Py-GC-MS