Optimization of Alkaline Transesterification of Soybean Oil and Castor Oil for Biodiesel Production

Oliveira, Débora de; Luccio, Marco Di; Faccio, Carina; Rosa, Clarissa Dalla; Bender, João Paulo; Lipke, Nádia; Amroginski, Cristiana; Dariva, Cláudio; Oliveira, J. Vladimir

doi:10.1007/978-1-59259-991-2_47

Cited by 7 publications

(5 citation statements)

References 12 publications

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“…The literature described the biodiesel production from castor oil after neutralization or use of a cosolvent. , − …”

Section: Resultsmentioning

confidence: 99%

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Biodiesel Production from Castor Oil: Optimization of Alkaline Ethanolysis

Silva¹,

Batistella²,

Filho³

et al. 2009

Energy Fuels

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This work presents the biodiesel production from castor oil with bioethanol from sugar cane (also called here ethanol) in presence of sodium ethoxide and sodium hydroxide as catalysts. The studied variables were reaction temperature, catalyst concentration, and ethanol:castor oil molar ratio. The experimental design was used in the optimization process because this methodology permitted a careful evaluation of the process variables. A model describing the biodiesel conversion in terms of reaction temperature, molar ratio ethanol:castor oil was identified. The experimental design shows the catalyst concentration as the most important variable and the model obtained predicts the ethyl ester concentration as function of the reaction temperature, the ethanol:castor oil molar ratio and the catalyst concentration. A conversion of 99%wt of ethyl ester was obtained at 30 °C, with mechanic stirrer, 1 %wt of sodium ethoxyde, ethanol: castor oil molar ratio of 16:1 and at 30 min of reaction. The kinetic study of the transesterification reaction was carried out, and the apparatus used for the experiment was a 1 L jacketed reactor, equipped with a variable speed agitator. The study was based on the overall transesterification reaction. In the kinetic study, the temperature of the reactor was controlled and maintained at 30, 40, 50, and 70 °C. The results from the experiments demonstrate that the kinetically controlled region follows a first-order mechanism for the forward reaction. The castor oil molecular weight was determined using the vapor pressure osmometry technique (VPO). The results showed that VPO technique is a robust alternative methodology for determining vegetable oil molecular weight presenting lower cost than gas chromatography analysis (GC).

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“…The literature described the biodiesel production from castor oil after neutralization or use of a cosolvent. , − …”

Section: Resultsmentioning

confidence: 99%

“…The difficulty to separate both phases (biodiesel and glycerol) is evident in the castor oil transesterification process. The phase separation between the ester (biodiesel) and the glycerol was obtained with neutralization of the products, using cosolvents or extraction by a polar solvent (water). ,− …”

Section: Introductionmentioning

confidence: 99%

Biodiesel Production from Castor Oil: Optimization of Alkaline Ethanolysis

Silva¹,

Batistella²,

Filho³

et al. 2009

Energy Fuels

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“…The RSM is used as an important optimization tool for biodiesel production. 46,47 The RSM, based on the combination of actuarial and mathematical instruments, is considered to be a useful technique for the development, modification, and the optimization of the reaction conditions. 48,49…”

Section: Materials and Methodologymentioning

confidence: 99%

“…45 The RSM is used as an important optimization tool for biodiesel production. 46,47 The RSM, based on the combination of actuarial and mathematical instruments, is considered to be a useful technique for the development, modification, and the optimization of the reaction conditions. 48,49 In this study, the Box-Wilson CCD was used to optimize the ultrasound-assisted synthesis (UAS) of the biodiesel obtained from peanut oil, with three independent variables of time (s), amount of catalyst (wt.…”

Section: Rsm and Statistical Analysismentioning

confidence: 99%

Ultrasound-assisted synthesis of biodiesel from peanut oil by using response surface methodology

Shalmashi

Khodadadi

2018

Energy & Environment

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Biodiesel is a non-toxic and renewable fuel produced by a transesterification reaction between alcohol and vegetable oil. The objective of this paper is to optimize the ultrasound-assisted production of biodiesel. The central composite design method was used to optimize the transesterification reaction conditions of biodiesel production from peanut oil. The independent variables investigated in the course of the experiment include the catalyst concentration, the reaction time, and the ultrasonic amplitude. The reaction was done by employing ultrasound under set conditions of atmospheric pressure and ambient temperature. A statistical model predicted the optimum conversion yield of peanut biodiesel to be 100.00% under the following optimum experimental conditions: ultrasonic amplitude equals 69.7%, catalyst concentration equals 0.88% weight percent catalyst, and reaction time of 39.38 s. Also, such conditions led to obtaining the linear equation for predicting the conversion yield of biodiesel production.

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“…Karmee et al 19 , reported the kinetic study of transesterification of monoglycerides from Pongamia oil. Debora De Oliveira et al 8 , described the kinetics of enzyme-catalyzed transesterification of Soybean oil in n-hexane. Karmee et al 13 , investigated the kinetics of base-catalyzed alcoholysis of triglycerides from Pongamia oil.…”

Section: Introductionmentioning

confidence: 99%