文献类型：期刊文献

英文题名：Improvement in lipase-catalyzed methanolysis of triacylglycerols for biodiesel production using a solvent engineering method

作者：Su, Erzheng[1];Wei, Dongzhi[1,2]

机构：[1]E China Univ Sci & Technol, New World Inst Biotechnol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Qingdao Inst BioEnergy & Bioproc Technol, Qingdao 266071, Peoples R China

年份：2008

卷号：55

期号：3-4

起止页码：118

外文期刊名：JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC

收录：;EI(收录号：20083911597387);WOS:【SCI-EXPANDED(收录号:WOS:000260318500004)】；

基金：This work was supported by the Program for New Century Excellent Talents in University (project No. NCET-04-0411).

语种：英文

外文关键词：Solvent engineering; Co-solvent mixture; Biodiesel; Novozym435; Jatropha curcas L. seed oil

摘要：A solvent engineering strategy was applied to the lipase-catalyzed methanolysis of triacyl glycerols for biodiesel production. The effect of different pure organic solvents and co-solvent mixtures on the methanolysis was compared. The substrate conversions in the co-solvent mixtures were all higher than those of the corresponding pure Organic solvents. Further study showed that addition of co-solvent decreased the values of vertical bar log P-interface - log P-substrate vertical bar and thus led to a faster reaction. The more the values of vertical bar log(interface) - logP(substrate)vertical bar decreased, the faster the reaction proceeded and the higher the conversion attained. Different co-solvent ratio was further investigated. The co-solvent mixture of 25% t-pentanol:75% isooctane (v/v) was optimal. with which both the negative effects caused by excessive methanol and by-product glycerol could be eliminated. There was no obvious loss in lipase activity even after being repeatedly used for 60 cycles (720 h) with this co-solvent mixture as reaction medium. Other lipases and lipase combinations can also catalyze methanolysis in this co-solvent mixture. Furthermore, other vegetable oils were also explored for biodiesel production in this co-solvent Mixture and it had been found that this co-solvent mixture media has extensive applicability. (c) 2008 Published by Elsevier B.V.