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| 1 | Studies on Production of Biodiesel by Esterification of Fatty Acids by a Lipase Preparation from Candida sp. 99-125显示文摘A self-made lipase preparation from Candida sp. 99-125 was used for the production of biodiesel through enzymatic esterification of fatty acids. The crude lipase powder and fermentation broth were immobilized on a cheap fiber cloth carrier. The conditions of lipase-catalyzed esterification between long-chain fatty acids and methanol in a solvent system were investigated in detail, including the temperature, pH value, substrate concentration, solvent, absorbent agent, enzyme dosage and purity, immobilization method, the mode of addition of substrate. The results show that reaction temperature, pH of lipase micro-environment, substrate concentration, enzyme dosage and purity affect the esterification strongly. Several new methods and enzymatic procedures for improving the enzymatic reaction involving the process cost are also discussed, such as fossil diesel fuel as reaction solvent, immobilization method, multi-step gradient addition of methanol. The esterification degree of 92.8% was obtained with oleic acid and methanol under the optimal reaction condition after 12.5 h reaction time. The half-life of the immobilized lipase preparation from crude free lipase powder for esterification was 15 days. | DENG Li(邓利) NIE Kaili(聂开立) WANG Fang(王芳) TAN Tianwei(谭天伟) | 2005 | Chinese Journal of Chemical Engineering2005，13，4： | 8 |
| 2 | Environmental and economic assessment of vegetable oil production using membrane separation and vapor recompression显示文摘从 oilseeds 的原油的溶剂抽取广泛地被申请它的高生产能力和低费用。在这个过程,溶剂恢复和尾巴气体处理被吸附,擦洗的石蜡,或甚至 cryogenics 通常执行(在低尾巴气体,流动评价) 。膜分离,比这些技术有更低的精力消费,跨越大量可被考虑的集中和流动率,并且是而且容易与另外的技术结合了。蒸汽压缩有潜力与蒸馏和蒸发联合减少热损失。在这研究,我们证明了联合膜分离和蒸汽压缩改进常规蔬菜采油的可能性,由实验和过程模拟。将近 73% 精力能被新奇处理途径在蔬菜油抽取的过程节省。由进一步环境的评价,几个影响范畴证明优化过程是环境地持续的。 | Weibin Kong Qi Miao Peiyong Qin Jan Baeyens Tianwei Tan | 2017 | Frontiers of Chemical Science and Engineering2017，11，2： | 3 |
| 3 | Efficient production of chemicals from microorganism by metabolic engineering and synthetic biology显示文摘The use of traditional chemical catalysis to produce chemicals has a series of drawbacks,such as high dependence on fossil resources,high energy consumption,and environmental pollution.With the development of synthetic biology and metabolic engineering,the use of renewable biomass raw materials for chemicals synthesis by constructing efficient microbial cell factories is a green way to replace traditional chemical catalysis and traditional microbial fermentation.This review mainly summarizes several types of bulk chemicals and high value-added chemicals using metabolic engineering and synthetic biology strategies to achieve efficient microbial production.In addition,this review also summarizes several strategies for effectively regulating microbial cell metabolism.These strategies can achieve the coupling balance of material and energy by regulating intracellular material metabolism or energy metabolism,and promote the efficient production of target chemicals by microorganisms. | Yang Zhang Jing Yu Yilu Wu Mingda Li Yuxuan Zhao Haowen Zhu Changjing Chen Meng Wang Biqiang Chen Tianwei Tan | 2021 | Chinese Journal of Chemical Engineering2021，34，2： | 2 |
| 4 | Chiral separation of racemic drugs using molecular imprinting显示文摘Molecularly imprinted polymers (MIPs) of (S)-ketoprofen and (S)-naproxen are prepared using non-covalent imprinting in the presence of template molecules. The prepared MIPs are used as the chiral stationary phase to separate ramemic naproxen and ketoprofen. The results show that racemic naproxen and ketoprofen are efficiently resolved on MIPs. The effect of concentration of acetic acid in the mobile phase is studied, and the data are analyzed using the affinity chromatography model, and the close agreement is achieved between the simulated and experimental curves. The results suggest that the affinity chromatography mechanism controls the retention in this system. Moreover, the affinity chromatography equilibrium constants on (S)-naproxen and (S)-ketoprofen are estimated. | LEI Jiandu and TAN Tianwei(Department of Biochemical Engineering, School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China) | 2002 | Progress in Natural Science:Materials International2002，12，12： | 2 |
| 5 | Synthesis of micro/meso porous carbon for ultrahigh hydrogen adsorption using cross-linked polyaspartic acid显示文摘In addition to the specific surface area,surface topography and characteristics such as the pore size,pore size distribution,and micro/mesopores ratio are factors that determine the performance of porous carbons(PCs)in the fields of energy,catalysis,and adsorption.Based on the mechanism of weight loss of polyaspartic acid at high temperatures,this study provided a new method for adjusting the surface morphology of PCs by changing the cross-linking ratio of the precursor,where cross-linked polyaspartic acid was used as precursor without additional activating agents.N2 adsorption analysis indicated that the specific surface area of the obtained PCs was as high as 1458 m2·g-1,of which I 200 m2·g-1was the contribution of the microporous area and the highest pore volume was 1.13 cm3·g-1,of which the micropore volume was 0.636cm3·g-1.The thermogravimetric analysis results of the precursor,and also the scanning electron microscopy and Brunauer-Emmet-Teller analysis results of the carboniza-tion product confirmed that the prepared PCs presented multilevel pore structure,and the diameters of most pores were 0.78 and 3.97 nm;moreover,the pore size distribution was relatively uniform.This conferred the PCs the ultrahigh hydrogen adsorption capacity of up to 4.52 wt-%at 77 K and 1.13 bar,in addition to their great energy storage and catalytic potental. | Jun Wei Jianbo Zhao Di Cai Wenqiang Ren Hui Cao Tianwei Tan | 2020 | Frontiers of Chemical Science and Engineering2020，14，5： | 2 |
| 6 | Separation and purification of puerarin using β-cyclodextrin-coupled agarose gelmedia显示文摘 | HE Xiangling TAN Tianwei XU Bingze | 2004 | Journal of Chromatography A2004，1022，： | 1 |
| 7 | Optimization of themedium for glutathione production in Saccharomyces cerevisiae显示文摘 | ZHANG Tao WEN Shaohong TAN Tianwei | 2007 | Process Biochemistry2007，42，： | 1 |
| 8 | Utilization of amino acids to enhance glutathione production in Saccharomyces cerevisiae显示文摘 | Shaohong Wen Tao Zhang Tianwei Tan | 2004 | Enzyme and Microbial Technology2004，35，67： | 1 |
| 9 | Study of the properties of molecularly imprinted polymers by computational and conformational analysis 显示文摘 | Liu Ying Wang Fang Tan Tianwei | 2007 | Ana- lytica Chimica Acta2007，581，： | 1 |
| 10 | Maximizing produc- tion of glutathione by amino acid modulation and high-cell-den- sity fed-batch culture of Saccharomyees eerevisiae 显示文摘 | Shaohong Wen Tao Zhang Tianwei Tan | 2006 | Process Biochemistry2006，41，12： | 1 |
| 11 | The effect of intracellular amino acids on GSH production by high-cell- density cultivation of Saccharomyces cerevisiae 显示文摘 | Miaomiao Wang Jinggeng Sun Tianwei Tan | 2012 | Appl Bio- them Biotechnol2012，168，1： | 1 |
| 12 | Optimization of ami- no acid composition in glutathione fermentation显示文摘 | Shaohong Wen Tao Zhang Tianwei Tan | 2005 | Process Bi- ochemistry2005，40，11： | 1 |
| 13 | Preparation of PVA/chitosan lipase membrane reactor and its application in synthesis of monoglyceride显示文摘 | Tan Tianwei Wang Fang Zhang Hua | 2002 | Journal of Molecular Catalysis B: Enzymatic2002，18，4： | 1 |
| 14 | Effect of amino acids ad- dition and feedback control strategies on the high-cell-density cultivation of SaccharomT'ces cerevislae for glutathione production 显示文摘 | Zhcng Wang Tianwei Tan Jie Song | 2007 | Process Biochemistry2007，42，1： | 1 |
| 15 | Enzymatic production of alkyl esters through alcoholysis: A critical evaluation of lipases and alcohols显示文摘 | Li Deng Xuebing Xu Gudmundur G. Haraldsson Tianwei Tan Fang Wang | 2005 | Journal of the American Oil Chemists’ Society2005，，5： | 1 |
| 16 | Adsorption of Ag^+ by a surface molecular-imprinted biosorbent显示文摘 | HUO Hongyan SU Haijia TAN Tianwei | 2009 | Chemical Engineering Journal2009，150，1： | 1 |
| 17 | Degradation behavior of hydrogel based on poly(aspartic acid)显示文摘 | Yang Jun Wang Fang Tan Tianwei | 2010 | Journal of Applied Polymer Science2010，117，1： | 1 |
| 18 | Purification of glycyrrhizin from Glycyrrhiza uralensis Fisch with ethanol / phosphate aqueous two phase system 显示文摘 | Tan Tianwei Huo Qing Ling Qiang | 2002 | Biotechnol Lett2002，24，： | 1 |
| 19 | Adsorption behaviour of metal ions on imprinted chitosan resin显示文摘 | TAN Tianwei HE Xiaojing DU Weixia | 2001 | Journal of Chemical Technology andBiotechnology2001，76，2： | 1 |
| 20 | An novel immobilization method of Saccharomyces cerevisiae to sorghum bagasse for ethanol production 显示文摘 | YU Jianliang ZHANG Xu TAN Tianwei | 2007 | J Biotech2007，129，3： | 1 |
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