Optimization of Enzymatic Production of Biodiesel from Castor Oil in Organic Solvent Medium
| Autor: | Carina Faccio, Silvana Menoncin, Nádia Lipke, José Vladimir de Oliveira, Cristiana Amroginski, Clarissa Dalla Rosa, Marco Di Luccio, Débora de Oliveira, João Paulo Bender |
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| Rok vydání: | 2004 |
| Předmět: |
Castor Oil
Time Factors Chemistry Organic Bioengineering Applied Microbiology and Biotechnology Biochemistry Catalysis Chemical kinetics Diesel fuel medicine Plant Oils Organic chemistry Molecular Biology Biodiesel Models Statistical Ethanol Chemistry Temperature Esters Lipase General Medicine Solvent Kinetics Biofuel Alcohols Castor oil Biodiesel production Solvents Biotechnology medicine.drug Nuclear chemistry |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 0273-2289 |
| DOI: | 10.1385/abab:115:1-3:0771 |
| Popis: | We studied the production of fatty acid ethyl esters from castor oil using n-hexane as solvent and two commercial lipases, Novozym 435 and Lipozyme IM, as catalysts. For this purpose, a Taguchi experimental design was adopted considering the following variables: temperature (35-65 degrees C), water (0-10 wt/wt%), and enzyme (5-20 wt/wt%) concentrations and oil-to-ethanol molar ratio (1:3 to 1:10). An empirical model was then built so as to assess the main and cross-variable effects on the reaction conversion and also to maximize biodiesel production for each enzyme. For the system containing Novozym 435 as catalyst the maximum conversion obtained was 81.4% at 65 degrees C, enzyme concentration of 20 wt/wt%, water concentration of 0 wt/wt%, and oil-to-ethanol molar ratio of 1:10. When the catalyst was Lipozyme IM, a conversion as high as 98% was obtained at 65 degrees C, enzyme concentration of 20 wt/wt%, water concentration of 0 wt/wt%, and oil-to-ethanol molar ratio of 1:3. |
| Databáze: | OpenAIRE |
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