title: Optimization of alkaline transesterification of soybean oil and castor oil for biodiesel production.
abstract: This article reports experimental data on the production of fatty acid ethyl esters from refined and degummed soybean oil and castor oil using NaOH as catalyst. The variables investigated were temperature (30-70 degrees C), reaction time (1-3 h), catalyst concentration (0.5-1.5 w/wt%), and oil-to-ethanol molar ratio (1:3-1:9). The effects of process variables on the reaction conversion as well as the optimum experimental conditions are presented. The results show that conversions >95% were achieved for all systems investigated. In general, an increase in reaction temperature, reaction time, and in oil-to-ethanol molar ratio led to an enhancement in reaction conversion, whereas an opposite trend was verified with respect to catalyst concentration.
authors.affiliation: Department of Food Engineering, URI, Campus de Erechim, Av. Sete de Setembro, 1621-Erechim-RS, 99700-000, Brazil. odebora@uricer.edu.br
authors.forename: Débora
authors.initials: D
authors.lastname: de Oliveira
authors.forename: Marco
authors.initials: M
authors.lastname: Di Luccio
authors.forename: Carina
authors.initials: C
authors.lastname: Faccio
authors.forename: Clarissa
authors.initials: C
authors.lastname: Dalla Rosa
authors.forename: João Paulo
authors.initials: JP
authors.lastname: Bender
authors.forename: Nádia
authors.initials: N
authors.lastname: Lipke
authors.forename: Cristiana
authors.initials: C
authors.lastname: Amroginski
authors.forename: Cláudio
authors.initials: C
authors.lastname: Dariva
authors.forename: José Vladimir
authors.initials: JV
authors.lastname: de Oliveira
mesh_terms: D000468:Alkalies / Q000737:chemistry; D002368:Castor Oil / Q000737:chemistry*; D002384:Catalysis; D020650:Combinatorial Chemistry Techniques; D004951:Esterification; D004952:Esters; D000431:Ethanol / Q000737:chemistry*; D005227:Fatty Acids / Q000138:chemical synthesis*; D005742:Gasoline; D006863:Hydrogen-Ion Concentration; D012972:Sodium Hydroxide / Q000737:chemistry*; D013024:Soybean Oil / Q000737:chemistry*; D013696:Temperature
chemical_list: D000468:Alkalies; D004952:Esters; D005227:Fatty Acids; D005742:Gasoline; D000431:Ethanol; D012972:Sodium Hydroxide; D013024:Soybean Oil; D002368:Castor Oil