Application of response surface methodology for optimization of biodiesel production by transesterification of soybean oil with ethanol

Silva, Giovanilton F.; Camargo, Fernando L.; Ferreira, Andrea Lopes de Oliveira

doi:10.1016/j.fuproc.2010.10.002

Cited by 200 publications

(87 citation statements)

References 23 publications

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“…%). The variable ranges that are provided in Table 1 were adopted to cover the intervals that commonly are utilized in literature [25][26][27][28][29]. Once the inputs and levels have been set as in Table 1, the design matrix and their corresponding combination of operating conditions are generated using the Statistical Software R (R Development Core Team, Auckland, New Zealand) [30].…”

Section: Experiments Designmentioning

confidence: 99%

An Improvement in Biodiesel Production from Waste Cooking Oil by Applying Thought Multi-Response Surface Methodology Using Desirability Functions

et al. 2017

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Abstract:The exhaustion of natural resources has increased petroleum prices and the environmental impact of oil has stimulated the search for an alternative source of energy such as biodiesel. Waste cooking oil is a potential replacement for vegetable oils in the production of biodiesel. Biodiesel is synthesized by direct transesterification of vegetable oils, which is controlled by several inputs or process variables, including the dosage of catalyst, process temperature, mixing speed, mixing time, humidity and impurities of waste cooking oil that was studied in this case. Yield, turbidity, density, viscosity and higher heating value are considered as outputs. This paper used multi-response surface methodology (MRS) with desirability functions to find the best combination of input variables used in the transesterification reactions to improve the production of biodiesel. In this case, several biodiesel optimization scenarios have been proposed. They are based on a desire to improve the biodiesel yield and the higher heating value, while decreasing the viscosity, density and turbidity. The results demonstrated that, although waste cooking oil was collected from various sources, the dosage of catalyst is one of the most important variables in the yield of biodiesel production, whereas the viscosity obtained was similar in all samples of the biodiesel that was studied.

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Section: Experiments Designmentioning

confidence: 99%

An Improvement in Biodiesel Production from Waste Cooking Oil by Applying Thought Multi-Response Surface Methodology Using Desirability Functions

et al. 2017

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“…The mas of sodium hydroxide was 1% in relation to the oil mass, with variation according to factorial design. The ethanol mass variations were based on the 6:1 molar ratio, considering the soybean oil molar mass equal to 874.6 g/mol [19,24,31], with variations according to factorial design. The oil mass (380 g) employed in the tests was the same for all the experiments.…”

Section: Alkoxide Preparationmentioning

confidence: 99%

“…As an experimental basis, the alcohol/referential oil molar ratio will be 6:1 and, for the base, it will be 1% of the oil mass [21][22][23][24][25][26][27][28][29][30][31]. The experiments were performed according to factorial experimental design and the optimization of parameters using the surface response methodology, which is widely used in chemical processes, including biodiesel production [19,25,26,[29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Optimization for producing biodiesel from ethanol and waste frying oil with a high concentration of es-ter

Lobo¹,

Costa²,

Gouvêa³

et al. 2016

Rev. Fac. Ing. Antioquia

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ABSTRACT:The usual transesterification of waste frying oil with ethanol does not give final concentration of biodiesel above 96.5%. The aim of this paper is to optimize the reaction conditions using ethanedioic acid as an activator of the carbonyl glyceryl ester. With the aid of a factorial design, the effects of the molar ratio of ethanol and oil, as well as the concentration of the catalyst sodium hydroxide were evaluated. The oil used was dehydrated and filtered, and the reactants submitted to mechanical stirring for two hours at 70° C. The data have been modeled by applying the response surface methodology, for the optimal reaction conditions. As results, the presence of ethanedioic acid drives transesterification from waste frying oil giving biodiesel with ester content over 96.5%. The response surface methodology gave the optimum conditions for the production of ethyl esters at molar ratio ethanol:oil of 6:1 and sodium hydroxide content of 1% relative to the mass of oil. RESUMEN:Considerando que la transesterificación del aceite residual como resultado de la cocción de alimentos con la presencia de etanol no permite obtener biodiesel con concentración de etil éster superior a 96,5%, esta investigación muestra cómo se optimizaron las condiciones de la reacción con la adición de ácido oxálico. Con la ayuda de un diseño factorial fueron estudiados los efectos de la relación molar de etanol y aceite, así como la concentración del catalizador hidróxido de sodio en la presencia de ácido oxálico como activador del carbonilo en la fase aceite. El aceite usado se deshidrató y se filtró. La reacción fue realizada mediante la agitación mecánica durante un período de dos horas a 70° C. Los datos fueron modelados mediante la aplicación de la metodología de superficie de respuesta, encontrando las condiciones óptimas de la reacción. El camino propuesto demostró ser factible para la producción de biodiesel a partir de etanol y aceite residual con contenido de éster dentro de la concentración especificada por EN 14103 (superior a 96,5%). La metodología de superficie de respuesta mostró las condiciones ideales con la relación molar etanol:aceite de 6:1 y contenido de hidróxido de sodio de 1% respecto a la masa del aceite.

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“…Oils with longer fatty-acid chains need half of the reaction time requested by oils comprising shorter fatty-acid chains to achieve maximum yield. Silva et al (2011) discussed in their paper the production process optimization for biodiesel by transesterification of soybean oil with ethanol, where several parameters, including catalyst, alcohol/vegetal oil molar ratio, and temperature would influence the transesterification. The authors' main objective was to study how the process variables (ethanol-to-oil ratio, catalyst concentration, reaction time and temperature) affecting the yield of biodiesel and then optimize this process.…”

Section: Optimization Of Biodiesel Productionmentioning

confidence: 99%

Biodiesel Production and Quality

Ferrari¹,

Pighinelli²,

Park³

2011

Biofuel's Engineering Process Technology

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Application of response surface methodology for optimization of biodiesel production by transesterification of soybean oil with ethanol

Cited by 200 publications

References 23 publications

An Improvement in Biodiesel Production from Waste Cooking Oil by Applying Thought Multi-Response Surface Methodology Using Desirability Functions

An Improvement in Biodiesel Production from Waste Cooking Oil by Applying Thought Multi-Response Surface Methodology Using Desirability Functions

Optimization for producing biodiesel from ethanol and waste frying oil with a high concentration of es-ter

Biodiesel Production and Quality

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