Screening, optimization and kinetics of Jatropha curcas oil transesterification with heterogeneous catalysts

This work investigates the production of fatty acid methyl esters (FAME) from Jatropha curcas oil using a variety of heterogeneous catalysts: resins, zeolites, clays, hydrotalcites, aluminas and niobium oxide. For this purpose, a catalyst screening was first conducted in a batch reactor at the follo...

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Published inRenewable energy Vol. 36; no. 2; pp. 726 - 731
Main Authors Zanette, Andréia F., Barella, Rodrigo A., Pergher, Sibele B.C., Treichel, Helen, Oliveira, Débora, Mazutti, Marcio A., Silva, Edson A., Oliveira, J. Vladimir
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.02.2011
Elsevier
Subjects
Alternative fuels. Production and utilization
Applied sciences
Biodiesel
Catalysis
Catalysts
clay
Clays
Energy
Exact sciences and technology
fatty acid methyl esters
Fuels
Heterogeneous catalysis
Jatropha curcas
Jatropha curcas oil
Kinetics
Mathematical models
methanol
Methyl alcohol
Miscellaneous
niobium
oils
Optimization
oxides
Reaction kinetics
resins
Screening
transesterification
zeolites
Heterogeneous catalysis
Kinetics
Biodiesel
Jatropha curcas oil
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Summary:This work investigates the production of fatty acid methyl esters (FAME) from Jatropha curcas oil using a variety of heterogeneous catalysts: resins, zeolites, clays, hydrotalcites, aluminas and niobium oxide. For this purpose, a catalyst screening was first conducted in a batch reactor at the following operating conditions: oil to methanol molar ratio of 1:9, 6 h of reaction, 5 wt% catalyst, at 333 and 393 K. From the screening step, KSF clay and Amberlyst 15 catalysts were selected to carry out a 2 3 full factorial central composite rotatable design so as to elucidate the effects of process variables on FAME yield. The optimum reaction conditions for both catalysts were found to be oil to methanol molar ratio of 1:12, 5 wt% of catalyst, 433 K and 6 h of reaction with a FAME yield of about 70 wt%. A kinetic study was then experimentally performed and a semi-empirical model was built to represent the experimental data. Finally, catalyst re-utilization in five successive batch experiments was evaluated at the optimized conditions.
Bibliography:http://dx.doi.org/10.1016/j.renene.2010.08.028
ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0960-1481
1879-0682
DOI:10.1016/j.renene.2010.08.028