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Application and progress of techno-economic analysis and life cycle assessment in biomanufacturing of fuels and chemicals

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Green Chemical Engineering 2023年第2期4卷 189-198页

作者： Rongzhan Fu Lixia Kang Chenyue Zhang qiang fei Shaanxi Key Laboratory of Degradable Biomedical Materials School of Chemical EngineeringNorthwest UniversityXi'an710069China Shaanxi Key Laboratory of Energy Chemical Process Intensification School of Chemical Engineering and TechnologyXi'an Jiaotong UniversityXi'an710049China

To reduce the dependency on petroleum-based products and emission of greenhouse gas,renewable biofuels and chemicals play an important role to meet the unmatched energy demands of the rapidly growing ***,most biofuel and chemical products do not reach the commercialization stage,mainly hindered by incomparable economics to ***-economic assessment(TEA)is a useful tool to estimate eco-nomic performance,and identify bottlenecks for the development of biofuel and chemical production technology,meanwhile,life cycle assessment(LCA)is applied to assess sustainability by reducing the environmental impact of biofuel and chemical *** present review covers TEA and LCA research progress in the manufacturing of biofuels and biochemical,and discusses the impacts of TEA and LCA results on the development and optimi-zation of biofuel and chemical *** addition,challenges associated with TEA and LCA of biofuel and biochemical production were briefly overviewed,and potential approaches that may overcome such challenges were discussed enabling viable and sustainable biomanufacturing of fuels and *** integrated TEA and LCA studies could significantly promote the economic and sustainable development of the biomanufacturing process.

关键词： Techno-economic assessment Life cycle assessment Biomanufacturing Fuels Chemicals Bioethanol Biodiesel

Quantitative Near-infrared Spectroscopic Analysis of Trimethoprim by Artificial Neural Networks Combined with Modified Genetic Algorithm

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Chemical Research in Chinese Universities 2014年第4期30卷 582-586页

作者： SHAN Hongyan fei Yanqun HUAN Yanfu FENG Guodong fei qiang College of Chemistry Jilin University Changchun 130021 P. R. China Changchun Weiersai Biotec Pharmaceutical Co. Ltd. Changchun 130616 P. R. China

A novel method for rapid,accurate and nondestructive determination of trimethoprim in complex matrix was ***-infrared spectroscopy coupled with multivariate calibration（partial least-squares and artificial neural networks） was applied in the *** variable selection process based on a modified genetic algorithm with fixed number of selected variables was proceeded,which can reduce the training time and enhance the predictive ability when coupled with artificial neural network model.

关键词： Artificial neural network Genetic algorithm Near-infrared spectroscopy Trimethoprim

Enhanced Mechanical Properties of Pure Zirconium via Friction Stir Processing

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Acta Metallurgica Sinica(English Letters) 2020年第1期33卷 147-153页

作者： Wen Wang Peng Han Jie Yuan Pai Peng qiang Liu fei qiang Ke Qiao Kuai-She Wang School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an 710055China National and Local Joint Engineering Research Center for Functional Materials Processing Xi’an 710055China

Friction stir processing(FSP), as a new kind of severe plastic deformation technique, can refine and homogenize the microstructure of metallic material. In this study, the effect of FSP on the microstructure and mechanical properties of pure Zr was investigated using electron backscatter diffraction analysis, microhardness and room-temperature tensile testing. The fine-grained(FG) structure with an average grain size of ~ 5.3 μm was obtained in the processed zone, where the average microhardness was ~ 198 HV, 1.6 times higher than that of base metal. Furthermore, tensile property of FG pure Zr exhibited obvious anisotropy owing to strong texture. Both grain size and texture had a significant effect on strength and ductility of FG pure Zr. High yield strength(248 MPa) and ultimate tensile strength(483 MPa), as well as good uniform elongation(10%) were achieved, which demonstrated that FSP was an effective method to fabricate bulk FG pure Zr with high strength and good ductility.

关键词： Friction stir processing Pure zirconium Grain size Texture Mechanical property

A Selective and Sensitive Fluorescence Probe for Se（IV） Based on Fluorescence Quenching of Gatifloxacin

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Chemical Research in Chinese Universities 2016年第5期32卷 736-741页

作者： LIU Qing HUAN Yanfu ZHENG Qingchuan fei qiang fei Yanqun FAN Qian FENG Guodong SHAN Hongyan College of Chemistry Jilin University Changchun 130021 P. R. China Laboratory of Theoretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University Changchun 130021 P. R. China Changchun WeiersaiBiotec Pharmaceutical Co. Ltd. Changchun 130616 P. R. China Changchun Vocational Institute of Technology Changchun 130033 P. R. China

A novel high selective and sensitive fluorescence probe termed gatifloxacin was discovered based on fluorescence ＂on-off＂ phenomenon in the presence of Se（IV）. In the Tris-HCl/acetonitrile（3：7, volume ratio, Tris-HCl 0.05 mol/L, pH=7.3） system, the fluorescence intensity of gatifloxacin was linearly decreased with the concentration increase of Se（IV） in a range of 1.0×10-5--5.0×10-5 mol/L with a correlation coefficient of 0.9979（R2=0.9958） and in a range of 5.0×10-5--1.0 ×10-4 mol/L with a correlation coefficient of 0.9973（R2=0.9946）. The detection limit of Se（IV） was 1.70×10-6mol/L.

关键词： Gatifloxacin Fluorescence probe Quenching Selenium

From nature to nurture:Essence and methods to isolate robust methanotrophic bacteria

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Synthetic and Systems Biotechnology 2020年第3期5卷 173-178页

作者： Haritha Meruvu Hui Wu Ziyue Jiao Liyan Wang qiang fei School of Chemical Engineering and Technology Xi'an Jiaotong UniversityXi'anShaanxiChina State Key Laboratory of Bioreactor Engineering East China University of Science and TechnologyShanghaiChina Luoyang TMAXTREE Biotechnology Co. Ltd.LuoyangChina Shaanxi Key Laboratory of Energy Chemical Process Intensification Xi'an Jiaotong UniversityXi'anChina

Methanotrophic bacteria are entities with innate biocatalytic potential to biofilter and oxidize methane into simpler compounds concomitantly conserving energy,which can contribute to copious industrial *** future and efficacy of such industrial applications relies upon acquiring and/or securing robust methanotrophs with taxonomic and phenotypic *** several dramatic advances,isolation of robust methanotrophs is still a long-way challenging task with several lacunae to be filled in *** with high tolerance to methane can be isolated and cultivated by mimicking natural environs,and adopting strategies like adaptive metabolic *** review summarizes existent and innovative methods for methanotrophic isolation and purification,and their respective applications.A comprehensive description of new insights shedding light upon how to isolate and concomitantly augment robust methanotrophic metabolism in an orchestrated fashion follows.

关键词： Methanotrophs Isolation Culture medium High throughput Adaptive laboratory evolution

Microstructure and Mechanical Properties in Friction Stir Welded Thick Al–Zn–Mg–Cu Alloy Plate

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Acta Metallurgica Sinica(English Letters) 2022年第8期35卷 1329-1342页

作者： fei qiang Wen Wang Ke Qiao Pai Peng Ting Zhang Xiao-Hu Guan Jun Cai qiang Meng Hua-Xia Zhao Kuai-She Wang School of Metallurgical Engineering National and Local Joint Engineering Research Center for Functional Materials ProcessingXi'an University of Architecture and TechnologyXi'an 710055China Northwest Institute for Non-Ferrous Metal Research Xian 710016China AVIC Manufacturing Technology Institute Bejing 100024China Beijing FSW Technology Co.Ltd Bejing 101107China

In this work, 20-mm-thick aluminum-alloy plates were joined via friction stir welding. The temperature gradient was reduced by reducing the surface welding heat input to achieve uniformity of the mechanical properties across the thick plate joints. The welding temperature was measured using thermocouples. The microstructures were observed via electron backscatter diff raction and transmission electron microscopy. The tensile properties of the samples sliced along the thickness direction of the joint were evaluated. The results show that the highest welding peak temperature is 430℃ on the advancing side on the top surface of the joint. The grain size gradually decreased along the thickness direction, and grain refi nement was due to the combination of continuous, discontinuous, and geometric dynamic recrystallization. The tensile properties of the sliced samples were found to be uniform, and the ultimate tensile strength reached 62% of that of the base metal. The main strengthening mechanism of the Al–Zn–Mg–Cu alloy joints consists of precipitation strengthening. In addition, the η ` → η phase transition and grain coarsening in the heat-affected zone were found to be responsible for the fracture of the joints.

关键词： Friction stir welding Aluminum alloy thick plate Dynamic recrystallization Mechanical properties Precipitated phase

Iodine Determination by Microwave Plasma Torch Atomic Emission Spectrometer Coupled with Online Preconcentration Vapor Generation Technique

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Chemical Research in Chinese Universities 2008年第5期24卷 546-549页

作者： fei Yan-qun LUO Gui-min FENG Guo-dong CHEN Huan-wen fei qiang HUAN Yan-fu JIN Qin-han Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education Institute of Analytical Science School of Chemistry Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments Jilin University Changchun 130021 P R. China

This article focuses on iodine determination by microwave plasma torch atomic emission spectrometry （MPT-AES） coupled with online preconcentration vapor generation method. A new desolvation device, multistrand Nafion dryer, was used as the substitute for condenser desolvation system. Some experimental conditions, such as preconcentration time, acidity of sample solution, rinsing solution acidity and dynamic linear range were investigated and optimized. The new desolvation system eliminates the problem of decreasing emission intensity of I（I） 206.238 nm line with the increase of working time on a conventional condenser desolvation system, thus greatly improving the reproducibility.

关键词： MPT-AES On-line preconcentration Vapor generation Nation dryer Membrane desolvation

Ginsenoside Rk3 modulates gut microbiota and regulates immune response of group 3 innate lymphoid cells to against colorectal tumorigenesis

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Journal of Pharmaceutical Analysis 2024年第2期14卷 259-275页

作者： Xue Bai Rongzhan Fu Yannan Liu Jianjun Deng qiang fei Zhiguang Duan Chenhui Zhu Daidi Fan Shaanxi Key Laboratory of Degradable Biomedical Materials School of Chemical EngineeringNorthwest UniversityXi'an710069China Biotech&Biomed Research Institute Northwest UniversityXi'an710069China School of Chemical Engineering and Technology Xi'an Jiaotong UniversityXi'an710069China

The gut microbiota plays a pivotal role in the immunomodulatory and protumorigenic microenvironment of colorectal cancer(CRC).However,the effect of ginsenoside Rk3(Rk3)on CRC and gut microbiota remains ***,the purpose of this study is to explore the potential effect of Rk3 on CRC from the perspective of gut microbiota and immune *** results reveal that treatment with Rk3 significantly suppresses the formation of colon tumors,repairs intestinal barrier damage,and regulates the gut microbiota imbalance caused by CRC,including enrichment of probiotics such as Akkermansia muciniphila and Barnesiella intestinihominis,and clearance of pathogenic *** metabolomics data demonstrate that Rk3 can modulate the metabolism of amino acids and bile acids,particularly by upregulating glutamine,which has the potential to regulate the immune ***,we elucidate the regulatory effects of Rk3 on chemokines and inflammatory factors associated with group 3 innate lymphoid cells(ILC3s)and T helper 17(Th17)signaling pathways,which inhibits the hyperactivation of the Janus kinase-signal transducer and activator of transcription 3(JAK-STAT3)signaling *** results indicate that Rk3 modulates gut microbiota,regulates ILC3s immune response,and inhibits the JAK-STAT3 signaling pathway to suppress the development of colon *** importantly,the results of fecal microbiota transplantation suggest that the inhibitory effect of Rk3 on colon tumors and its regulation of ILC3 immune responses are mediated by the gut *** summary,these findings emphasize that Rk3 can be utilized as a regulator of the gut microbiota for the prevention and treatment of CRC.

关键词： Colorectal cancer Ginsenoside Immune cells Gut microbiota

Efficient hydrolysis of hemicellulose to furfural by novel superacid SO_4H-functionalized ionic liquids

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Green Energy & Environment 2019年第1期4卷 49-55页

作者： Wei Hui Yan Zhou Yan Dong Zhi-Jun Cao fei-qiang He Min-Zhong Cai Duan-Jian Tao College of Chemistry and Chemical Engineering Institute of Advanced Materials Jiangxi Normal University

Novel superacid SO_4H-functionalized ionic liquids(SFILs) were designed and prepared in this work. The catalytic activities of SFILs were evaluated in xylan hydrolysis and xylose dehydration to produce furfural. Combined with the results of acid strength of SFILs characterized by solid-state ^(31)P MAS NMR, it was found that the catalytic performance of SFILs was positively correlated to their acid strength. The superacid SFIL [Ch-SO_4H][CF_3SO_3] displayed the best catalytic performance with more than 80% yield of furfural, and it was also obviously superior to usual SO_3H-functionalized acidic ILs, mineral liquid acids, and acidic resin Amberlyst-15 catalysts in catalytic activity under optimized conditions. In addition, the superacid SFIL [Ch-SO_4H][CF_3SO_3] could be easily separated from reaction system and reused at least five times without obvious decrease.

关键词： Superacid Ionic liquids Hemicellulose Hydrolysis Furfural