Document Detail


Kinetics of lipase-catalyzed synthesis of soybean fatty acid ethyl esters in pressurized propane.
MedLine Citation:
PMID:  20347889     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This work reports new experimental data and mathematical modeling of lipase-catalyzed biodiesel production using soybean oil and ethanol as substrates and pressurized n-propane as solvent. The experiments were carried out in a batch reactor, recording the reaction kinetics and evaluating the effects of temperature in the range of 45-70 degrees C, enzyme content from 1 to 20 wt% and oil to ethanol molar ratios of 1:3, 1:6, 1:9 and 1:15. The solvent to substrates mass ratio and pressure were set at 2:1 and 50 bar, respectively. Results showed that lipase-catalyzed alcoholysis in propane medium might be a potential alternative to conventional techniques for biodiesel production, since good conversions were obtained at mild temperature and pressure conditions. The semi-empirical mathematical model based on balance equations, adopted to describe the transesterification kinetics in pressurized n-propane, yielded relative deviations between experimental and calculated values lower than 10%, thus allowing a satisfactory representation of experimental results and a better understanding of the transesterification reaction.
Authors:
Claiton Z Brusamarelo; Eline Rosset; Aline de Césaro; Helen Treichel; Débora de Oliveira; Marcio A Mazutti; Marco Di Luccio; J Vladimir Oliveira
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-03-27
Journal Detail:
Title:  Journal of biotechnology     Volume:  147     ISSN:  1873-4863     ISO Abbreviation:  J. Biotechnol.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-10     Completed Date:  2010-08-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8411927     Medline TA:  J Biotechnol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  108-15     Citation Subset:  IM    
Copyright Information:
2010 Elsevier B.V. All rights reserved.
Affiliation:
Department of Food Engineering, URI-Campus de Erechim, Av. Sete de Setembro 1621, Erechim 99700-000, RS, Brazil.
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MeSH Terms
Descriptor/Qualifier:
Biofuels
Bioreactors
Biotechnology / instrumentation,  methods*
Catalysis
Equipment Design
Esterification
Esters / metabolism*
Ethanol / metabolism
Glycerides / metabolism*
Kinetics
Lipase / metabolism*
Models, Biological
Pressure
Propane / chemistry*
Soybean Oil / chemistry
Temperature
Chemical
Reg. No./Substance:
0/Biofuels; 0/Esters; 0/Glycerides; 64-17-5/Ethanol; 74-98-6/Propane; 8001-22-7/Soybean Oil; EC 3.1.1.3/Lipase

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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